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Journal articles on the topic 'Right-lateral faults'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Koehler, Rich D., Seth Dee, Austin Elliott, et al. "Field Response and Surface-Rupture Characteristics of the 2020 M 6.5 Monte Cristo Range Earthquake, Central Walker Lane, Nevada." Seismological Research Letters 92, no. 2A (2021): 823–39. http://dx.doi.org/10.1785/0220200371.

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Abstract The M 6.5 Monte Cristo Range earthquake that occurred in the central Walker Lane on 15 May 2020 was the largest earthquake in Nevada in 66 yr and resulted in a multidisciplinary scientific field response. The earthquake was the result of left-lateral slip along largely unmapped parts of the Candelaria fault, one of a series of east–northeast-striking faults that comprise the Mina deflection, a major right step in the north–northwest structural grain of the central Walker Lane. We describe the characteristics of the surface rupture and document distinct differences in the style and ori

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Su, Zhe, Xi-Wei Xu, Shan-Shan Liang, and Erchie Wang. "Seismotectonics of the 2017–2018 Songyuan Earthquake Sequence, Northeastern China: Passive Bookshelf Faulting and Block Rotation in the Songliao Basin." Seismological Research Letters 91, no. 3 (2020): 1593–605. http://dx.doi.org/10.1785/0220190251.

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Abstract The high frequency of earthquake clusters generated by pure strike-slip faulting over the past 3 yr (beginning in 2017 in the Songliao basin, northeastern China) has motivated us to consider why lateral strike slip and not extension determines the seismic activity within the Songliao basin. Precise location and characterization of relocated aftershocks, forward modeling of the coseismic displacement field, and Global Positioning System (GPS) monitoring data are combined to detect the possible seismogenic structures of the Songyuan earthquake sequence. The 2017 ML 5.3 aftershock cluste

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Harrichhausen, Nicolas, Kristin D. Morell, Christine Regalla, et al. "Paleoseismic Trenching Reveals Late Quaternary Kinematics of the Leech River Fault: Implications for Forearc Strain Accumulation in Northern Cascadia." Bulletin of the Seismological Society of America 111, no. 2 (2021): 1110–38. http://dx.doi.org/10.1785/0120200204.

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ABSTRACT New paleoseismic trenching indicates late Quaternary oblique right-lateral slip on the Leech River fault, southern Vancouver Island, Canada, and constrains permanent forearc deformation in northern Cascadia. A south-to-north reduction in northward Global Navigation Satellite System velocities and seismicity across the Olympic Mountains, Strait of Juan de Fuca (JDF), and the southern Strait of Georgia, has been used as evidence for permanent north–south crustal shortening via thrust faulting between a northward migrating southern forearc and rigid northern backstop in southwestern Cana

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Kuchay, O. A., and P. G. Dyadkov. "EVALUATION OF THE TECTONIC DISPLACEMENTS IN FAULT ZONES OF THE ALTAI, ACCORDING TO THE EARTHQUAKE FOCAL MECHANISMS." Russian Journal of geophysical technologies, no. 4 (March 6, 2019): 4–9. http://dx.doi.org/10.18303/2619-1563-2018-4-1.

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The characteristics of horizontal displacements in fault zones of the Altai-Sayan mountain region are revealed with use of the earthquake focal mechanisms data. Left-lateral strike-slips are characteristic for the Bogdo, Southern Tannuol and Sayan-Tuva faults, and for the eastern part of the Bollnay fault. Right-lateral strikeslip is characteristic for the Koktokay fault.

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Haeussler, Peter J., David P. Schwartz, Timothy E. Dawson, et al. "Surface Rupture of the 2002 Denali Fault, Alaska, Earthquake and Comparison with Other Strike-Slip Ruptures." Earthquake Spectra 20, no. 3 (2004): 565–78. http://dx.doi.org/10.1193/1.1775797.

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On 3 November 2002, an M7.9 earthquake produced 340 km of surface rupture on the Denali and two related faults in Alaska. The rupture proceeded from west to east and began with a 40-km-long break on a previously unknown thrust fault. Estimates of surface slip on this thrust are 3–6 m. Next came the principal surface break along ∼218 km of the Denali fault. Right-lateral offsets averaged around 5 m and increased eastward to a maximum of nearly 9 m. The fault also ruptured beneath the trans-Alaska oil pipeline, which withstood almost 6 m of lateral offset. Finally, slip turned southeastward onto

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Seeber, Leonardo, and Nancye Dawers. "Characterization of an Intraplate Seismogenic Fault in the Manhattan Prong, Westchester Co., N. Y." Seismological Research Letters 60, no. 2 (1989): 71–78. http://dx.doi.org/10.1785/gssrl.60.2.71.

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Abstract A close correlation in location, orientation and sense of slip is found between the Dobbs Ferry fault zone (DFFZ) and the 1985 Ardsley earthquake rupture (mb =4.0) in southern Westchester Co., N.Y. A 3 km portion of the DFFZ that had been previously recognized by Hall is now traced for 8 km from the Hudson River to Cameron’s Line. Detailed mapping reveals a northwest trending zone of intense fracturing and faulting associated with a set of aligned linear valleys. The fault zone is a tabular zone of discontinuous faults and fractures rather than a single through-going fault, and cumula

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7

Sharp, R. V., K. E. Budding, J. Boatwright, et al. "Surface faulting along the Superstition Hills fault zone and nearby faults associated with the earthquakes of 24 November 1987." Bulletin of the Seismological Society of America 79, no. 2 (1989): 252–81. http://dx.doi.org/10.1785/bssa0790020252.

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Abstract The M 6.2 Elmore Desert Ranch earthquake of 24 November 1987 was associated spatially and probably temporally with left-lateral surface rupture on many northeast-trending faults in and near the Superstition Hills in western Imperial Valley. Three curving discontinuous principal zones of rupture among these breaks extended northeastward from near the Superstition Hills fault zone as far as 9 km; the maximum observed surface slip, 12.5 cm, was on the northern of the three, the Elmore Ranch fault, at a point near the epicenter. Twelve hours after the Elmore Ranch earthquake, the M 6.6 Su

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8

JAVADI, HAMID REZA, MOHAMMAD REZA GHASSEMI, MAJID SHAHPASANDZADEH, et al. "History of faulting on the Doruneh Fault System: implications for the kinematic changes of the Central Iranian Microplate." Geological Magazine 150, no. 4 (2013): 651–72. http://dx.doi.org/10.1017/s0016756812000751.

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AbstractThe Doruneh Fault System is one of the major transcurrent faults in central Asia, extending ~900 km from western Afghanistan into West-Central Iran. The left-lateral Doruneh Fault System is also a key structure in the Arabia–Eurasia collisional zone, bounding the northern margin of the independent Central Iranian Microplate. The Doruneh Fault System exhibits a curved geometry, and is divided here into three segments: Eastern, Central and Western. We present the results of geological, structural and geomorphic studies into the nature of recent activity along the Doruneh Fault System seg

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Karaca, Sukru O., Ismail A. Abir, Shuhab D. Khan, Erman Ozsayın, and Kamil A. Qureshi. "Neotectonics of the Western Suleiman Fold Belt, Pakistan: Evidence for Bookshelf Faulting." Remote Sensing 13, no. 18 (2021): 3593. http://dx.doi.org/10.3390/rs13183593.

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The Suleiman Fold-Thrust Belt represents an active deformational front at the western margin of the Indian plate and has been a locus of major earthquakes. This study focuses on the western part of the Suleiman Fold-Thrust Belt that comprises two parallel NW–SE oriented faults: Harnai Fault and Karahi Fault. These faults have known thrust components; however, there remains uncertainty about the lateral component of motion. This work presents the new observation of surface deformation using the Small Baseline Subset (SBAS), Interferometric Synthetic Aperture Radar (InSAR) technique on Sentinel-

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10

Tian, Fei, Jianting Yang, Ming Cheng, et al. "Geometry, kinematics and dynamic characteristics of a compound transfer zone: the Dongying anticline, Bohai Bay Basin, eastern China." Open Geosciences 8, no. 1 (2016): 612–29. http://dx.doi.org/10.1515/geo-2016-0053.

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AbstractThe Dongying anticline is an E-W striking complex fault-bounded block unit which located in the central Dongying Depression, Bohai Bay Basin. The anticline covers an area of approximately 12 km2. The overlying succession, which is mainly composed of Tertiary strata, is cut by normal faults with opposing dips. In terms of the general structure, the study area is located in a compound transfer zone with major bounding faults to the west (Ying 1 fault) and east (Ying -8 and -31 faults). Using three-dimensional seismic data, wireline log and checkshot data, the geometries and kinematics of

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Gunawan, Endra, Takuya Nishimura, Susilo Susilo, et al. "Fault source investigation of the 6 December 2016 MwMw 6.5 Pidie Jaya, Indonesia, earthquake based on GPS and its implications of the geological survey result." Journal of Applied Geodesy 14, no. 4 (2020): 405–12. http://dx.doi.org/10.1515/jag-2020-0027.

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AbstractOn 6 December 2016 at 22:03 UTC, a devastating magnitude 6-class strike-slip earthquake occurred along an unidentified and unmapped fault in Pidie Jaya, northern Sumatra. We analysed the possible fault using continuous Global Positioning System (GPS) observation available in the region. In our investigation, we searched for the fault source parameters of the north- and south-dipping left-lateral faults and the west- and east-dipping right-lateral faults. We identified that the fault responsible for the earthquake was located offshore, with a southwest-northeast direction. We also compu

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Cheng, Feng, Andrew V. Zuza, Peter J. Haproff, et al. "Accommodation of India–Asia convergence via strike-slip faulting and block rotation in the Qilian Shan fold–thrust belt, northern margin of the Tibetan Plateau." Journal of the Geological Society 178, no. 3 (2021): jgs2020–207. http://dx.doi.org/10.1144/jgs2020-207.

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Existing models of intracontinental deformation have focused on plate-like rigid body motion v. viscous-flow-like distributed deformation. To elucidate how plate convergence is accommodated by intracontinental strike-slip faulting and block rotation within a fold–thrust belt, we examine the Cenozoic structural framework of the central Qilian Shan of northeastern Tibet, where the NW-striking, right-slip Elashan and Riyueshan faults terminate at the WNW-striking, left-slip Haiyuan and Kunlun faults. Field- and satellite-based observations of discrete right-slip fault segments, releasing bends, h

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Yu, S. M. "STRUCTURE AND DEVELOPMENT OF THE OTWAY BASIN." APPEA Journal 28, no. 1 (1988): 243. http://dx.doi.org/10.1071/aj87019.

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The Otway Basin developed as a series of extensional basins along the southern margin of Australia during the Late Jurassic and the Early Cretaceous, prior to the break up of Eastern Gondwanaland. The Basin developed initially as a rift which subsequently, Middle Cretaceous time onwards, drifted and separated.The structural framework of the Basin is very complex due to the superposition of various successive tectonic processes that resulted in a series of predominantly north-west-south-east striking, basin dipping faults. Strike directions of the faults progressively change to a more north-sou

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14

Li, Chenglong, Guohong Zhang, Xinjian Shan, et al. "Surface Rupture Kinematics and Coseismic Slip Distribution during the 2019 Mw7.1 Ridgecrest, California Earthquake Sequence Revealed by SAR and Optical Images." Remote Sensing 12, no. 23 (2020): 3883. http://dx.doi.org/10.3390/rs12233883.

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The 2019 Ridgecrest, California earthquake sequence ruptured along a complex fault system and triggered seismic and aseismic slips on intersecting faults. To characterize the surface rupture kinematics and fault slip distribution, we used optical images and Interferometric Synthetic Aperture Radar (InSAR) observations to reconstruct the displacement caused by the earthquake sequence. We further calculated curl and divergence from the north-south and east-west components, to effectively identify the surface rupture traces. The results show that the major seismogenic fault had a length of ~55 km

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15

Ruhl, Christine J., Emily A. Morton, Jayne M. Bormann, Rachel Hatch-Ibarra, Gene Ichinose, and Kenneth D. Smith. "Complex Fault Geometry of the 2020 Mww 6.5 Monte Cristo Range, Nevada, Earthquake Sequence." Seismological Research Letters 92, no. 3 (2021): 1876–90. http://dx.doi.org/10.1785/0220200345.

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Abstract On 15 May 2020 an Mww 6.5 earthquake occurred beneath the Monte Cristo Range in the Mina Deflection region of western Nevada. Rapid deployment of eight temporary seismic stations enabled detailed analysis of its productive and slowly decaying aftershock sequence (p=0.8), which included ∼18,000 autodetected events in 3.5 months. Double-difference, waveform-based relative relocation of 16,714 earthquakes reveals a complex network of faults, many of which cross the inferred 35-km-long east–northeast-striking, left-lateral mainshock rupture. Seismicity aligns with left-lateral, right-late

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El-Hussaini, A., M. Youssef, and H. Ibrahim. "An application of the second derivative as a tool in tectonic analysis in the Qattara Depression area, Egypt." Geological Magazine 123, no. 3 (1986): 307–13. http://dx.doi.org/10.1017/s0016756800034786.

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AbstractThe second derivative of gravity anomalies of the Qattara area was analysed and statistically studied for determining the tectonic elements. Zones of zero second derivative were considered as the locations of possible faults. The analysis of a constructed tectonic map portrays the predominance of N45°W, N85°E and N45°E fault trends in addition to less pronounced N15°E and N–S faults. The NW–SE faults are very old and inherited from the basement structures. They acted as first order right-lateral wrench faults during the Alpine tectonism. Second and higher orders of faults, developed as

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Koukouvelas, I., G. Pe-Piper, and D. J. W. Piper. "Pluton emplacement by wall-rock thrusting, hanging-wall translation and extensional collapse: latest Devonian plutons of the Cobequid fault zone, Nova Scotia, Canada." Geological Magazine 133, no. 3 (1996): 285–98. http://dx.doi.org/10.1017/s001675680000902x.

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AbstractLatest Devonian A-type granite-gabbro plutons, in part ductilely deformed, are spatially associated with the strike-slip Cobequid fault zone. The youngest intrusions are close to the Cobequid fault zone, which was the main conduit for magma. Two phases of deformation accompanying magma emplacement are recognized. Early magmas intruded ductile rocks during left-lateral oblique thrust movements. A second stage of right-lateral oblique slip normal faulting accommodated uplift of the plutons when coarse granite was emplaced in the crestal regions. Cross-cutting late stage porphyries, grani

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Walton, Maureen A. L., Daniel S. Brothers, James E. Conrad, et al. "Morphology, structure, and kinematics of the San Clemente and Catalina faults based on high-resolution marine geophysical data, southern California Inner Continental Borderland (USA)." Geosphere 16, no. 5 (2020): 1312–35. http://dx.doi.org/10.1130/ges02187.1.

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Abstract Catalina Basin, located within the southern California Inner Continental Borderland (ICB), United States, is traversed by two active submerged fault systems that are part of the broader North America–Pacific plate boundary: the San Clemente fault (along with a prominent splay, the Kimki fault) and the Catalina fault. Previous studies have suggested that the San Clemente fault (SCF) may be accommodating up to half of the ∼8 mm/yr right-lateral slip distributed across the ICB between San Clemente Island and the mainland coast, and that the Catalina fault (CF) acts as a significant restr

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ΔΑΝΑΜΟΣ, Γ. Δ., Ε. Λ. ΛΕΚΚΑΣ, and Σ. Γ. ΛΟΖΙΟΣ. "The Gujarat, West India, earthquake (Jan 26th 2001). A geodynamic event in an intraplate compressional regime?" Bulletin of the Geological Society of Greece 34, no. 4 (2001): 1405. http://dx.doi.org/10.12681/bgsg.17234.

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The Jan. 26, 2001, Ms=7.7 earthquake occurred in Gujarat region of W. India, which lies 200-400 Km away from the active plate boundary zone, between the Indian subcontinent and the Asian plate, along the India-Pakistan border and the Himalayan belt. An Ms=7.7±0.2 earthquake also occurred in the same region in 1819. A zone of co-seismic E-W surface ruptures, 30-40 Km long and 15-20 Km wide, observed near the epicentral area and seems to be associated with pre-existing reverse faults and thrust folds, which were partially reactivated during the recent earthquake. Except the reverse vertical disp

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Ahnaf, Jemi Saputra, Aton Patonah, Haryadi Permana, and Ismawan Ismawan. "Structure and Tectonic Reconstruction of Bayah Complex Area, Banten." Journal of Geoscience, Engineering, Environment, and Technology 3, no. 2 (2018): 77. http://dx.doi.org/10.24273/jgeet.2018.3.2.1554.

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The research aimed to reconstruct the geological structures and tectonics of the Bayah complex area. The structures found that grouped into regional structural patterns used to determine the ages and the events that responsible to its formation. The methods used in this research include field and studio method. Field method carried out to map the outcrops and record geological structures data using geological compass, GPS, tape measurement, and geological hammer, while studio method performed to process and analyze data using software such as Win Tensor, Dips, MapInfo Professional 10.5 and Cor

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Rodríguez-Pradilla, Germán, and David W. Eaton. "Automated Microseismic Processing and Integrated Interpretation of Induced Seismicity during a Multistage Hydraulic-Fracturing Stimulation, Alberta, Canada." Bulletin of the Seismological Society of America 110, no. 5 (2020): 2018–30. http://dx.doi.org/10.1785/0120200082.

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ABSTRACT The development of organic-rich, low-permeability formations for hydrocarbon production requires the use of unconventional techniques such as multiwell pad drilling of horizontal wells and massive multistage hydraulic-fracturing stimulations. However, proliferation of these unconventional development methods has been linked to localized cases of fault reactivation during or shortly after hydraulic fracturing. In the Duvernay formation, located in Alberta, Canada, induced seismicity from hydraulic fracturing has occurred on nearly vertical strike-slip faults that are difficult to detec

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Pollitz, Fred F., Jessica R. Murray, Jerry L. Svarc, et al. "Kinematics of Fault Slip Associated with the 4–6 July 2019 Ridgecrest, California, Earthquake Sequence." Bulletin of the Seismological Society of America 110, no. 4 (2020): 1688–700. http://dx.doi.org/10.1785/0120200018.

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ABSTRACT The 2019 Ridgecrest, California, earthquake sequence produced observable crustal deformation over much of central and southern California, as well as surface rupture over several tens of kilometers. To obtain a detailed picture of the fault slip involved in the 4 July M 6.4 foreshock and 6 July M 7.1 mainshock, we combine strong-motion seismic waveforms with crustal deformation observations to obtain kinematic and static slip models of both events. We sample the regional seismic wavefield for both the foreshock and mainshock with three-component records from 31 stations of the Califor

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Wesnousky, Steven G. "Seismotectonic Snapshots: The 18 March 2020 Mw 5.7 Magna, 31 March 2020 Mw 6.5 Stanley, and 15 May 2020 Mw 6.5 Monte Cristo Intermountain West Earthquakes." Seismological Research Letters 92, no. 2A (2021): 755–72. http://dx.doi.org/10.1785/0220200314.

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AbstractSeismological characteristics of the 18 March 2020 Mw 5.7 Magna, 31 March 2020 Mw 6.5 Stanley, and 15 May 2020 Mw 6.5 Monte Cristo Intermountain West earthquakes are largely consistent with expectations arising from observations accumulated over the ∼40 yr since implementation and subsequent growth of seismic networks in the broad region. Each occurred within a zone of relatively elevated seismicity, active faults, and geodetically observed strain accumulation. Aftershock distributions in each are confined primarily to depths of &lt;15 km, and the total number of aftershocks correl

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YANG, KENN-MING, RUEY-JUIN RAU, HAO-YUN CHANG, et al. "The role of basement-involved normal faults in the recent tectonics of western Taiwan." Geological Magazine 153, no. 5-6 (2016): 1166–91. http://dx.doi.org/10.1017/s0016756816000637.

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AbstractIn the foreland area of western Taiwan, some of the pre-orogenic basement-involved normal faults were reactivated during the subsequent compressional tectonics. The main purpose of this paper is to investigate the role played by the pre-existing normal faults in the recent tectonics of western Taiwan. In NW Taiwan, reactivated normal faults with a strike-slip component have developed by linkage of reactivated single pre-existing normal faults in the foreland basin and acted as transverse structures for low-angle thrusts in the outer fold-and-thrust belt. In the later stage of their dev

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Johnson, Arvid M., Robert W. Fleming, and Kenneth M. Cruikshank. "Shear zones formed along long, straight traces of fault zones during the 28 June 1992 Landers, California, earthquake." Bulletin of the Seismological Society of America 84, no. 3 (1994): 499–510. http://dx.doi.org/10.1785/bssa0840030499.

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Abstract Surface rupturing during the 28 June 1992 Landers, California, earthquake, east of Los Angeles, accommodated right-lateral offsets up to about 6 m along segments of distinct, en-echelon fault zones with a total length of 80 km. The offsets were accommodated generally not by faults—distinct slip surfaces—but rather by shear zones, tabular bands of localized shearing. Along simple stretches of fault zones at Landers the rupture is characterized by telescoping of shear zones and intensification of shearing: broad shear zones of mild shearing, containing narrow shear zones of more intense

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Estève, Clément, Pascal Audet, Andrew J. Schaeffer, Derek L. Schutt, Richard C. Aster, and Joel F. Cubley. "Seismic evidence for craton chiseling and displacement of lithospheric mantle by the Tintina fault in the northern Canadian Cordillera." Geology 48, no. 11 (2020): 1120–25. http://dx.doi.org/10.1130/g47688.1.

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Abstract The northern Canadian Cordillera (NCC) of northwestern Canada is segmented by several margin-parallel, right-lateral, strike-slip faults that accumulated several hundred kilometers of displacement between the Late Cretaceous and the Eocene. The depth extent of these faults, notably the Tintina fault (TF), has important implications for the tectonic assemblage and evolution of NCC lithospheric mantle, but geophysical models and geochemical data remain inconclusive. Using a recent three-dimensional P-wave seismic velocity model, we resolved a series of sharp (∼10 km) P-wave velocity con

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Cheremnykh, A. V. "Parageneses of fractures in large fault zones of West Transbaikalia." Geodynamics & Tectonophysics 9, no. 3 (2018): 889–908. http://dx.doi.org/10.5800/gt-2018-9-3-0375.

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Our study was focused on the parageneses of heterogeneous fractures in the large fault zones of West Transbaikalia,Russia. We reconstructed the latest deformation in the fault zones of Transbaikalia, within which paleoseismic dislocations are known and M 4.7 earthquakes take place. To obtain statistically justified solutions on the kinematic types of the largest faults ofWest Transbaikalia, we collected the required data and conducted the structural and paragenetic analysis of the fractures in the study area. In the Chikoi-Ingoda, Khilok, North Tugnui andNorth Zaganfault zones, we created a ne

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Wells, Ray E., Richard J. Blakely, and Sean Bemis. "Northward migration of the Oregon forearc on the Gales Creek fault." Geosphere 16, no. 2 (2020): 660–84. http://dx.doi.org/10.1130/ges02177.1.

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Abstract The Gales Creek fault (GCF) is a 60-km-long, northwest-striking dextral fault system (west of Portland, Oregon) that accommodates northward motion and uplift of the Oregon Coast Range. New geologic mapping and geophysical models confirm inferred offsets from earlier geophysical surveys and document ∼12 km of right-lateral offset of a basement high in Eocene Siletz River Volcanics since ca. 35 Ma and ∼8.8 km of right-lateral separation of Miocene Columbia River Basalt at Newberg, Oregon, since 15 Ma (∼0.62 ± 0.12 mm/yr, average long-term rate). Relative uplift of Eocene Coast Range bas

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de Castro, D. L., and F. H. R. Bezerra. "Fault evolution in the Potiguar rift termination, equatorial margin of Brazil." Solid Earth 6, no. 1 (2015): 185–96. http://dx.doi.org/10.5194/se-6-185-2015.

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Abstract. The transform shearing between South American and African plates in the Cretaceous generated a series of sedimentary basins on both plate margins. In this study, we use gravity, aeromagnetic, and resistivity surveys to identify architecture of fault systems and to analyze the evolution of the eastern equatorial margin of Brazil. Our study area is the southern onshore termination of the Potiguar rift, which is an aborted NE-trending rift arm developed during the breakup of Pangea. The basin is located along the NNE margin of South America that faces the main transform zone that separa

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Tavani, S. "The boundary between the eastern and western domains of the Pyrenean Orogen: a Cenozoic triple junction zone in Iberia?" Solid Earth Discussions 4, no. 1 (2012): 507–64. http://dx.doi.org/10.5194/sed-4-507-2012.

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Abstract. The Cantabrian Transitional Area (CTA) is located in the eastern portion of the Cantabrian Mountain Range of the northern Spain. It represents the most important internal boundary within the Upper Cretaceous to Cenozoic E–W elongated Pyrenean Orogen. In the south-verging portion of this orogen, the CTA divides the western thick-skinned Cantabrian Domain, which accommodated for a limited portion of the total N–S oriented orogenic shortening, from the Pyrenean realm to the east, where the south-verging frontal structures are characterised by a marked thiN–Skin style of deformation, and

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Ottemöller, Lars, Won-Young Kim, Felix Waldhauser, Norunn Tjåland, and Winfried Dallmann. "The Storfjorden, Svalbard, Earthquake Sequence 2008–2020: Transtensional Tectonics in an Arctic Intraplate Region." Seismological Research Letters 92, no. 5 (2021): 2838–49. http://dx.doi.org/10.1785/0220210022.

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Abstract An earthquake sequence in the Storfjorden offshore area southwest of Spitsbergen in the Svalbard archipelago initiated with a 21 February 2008 magnitude Mw 6.1 event. This area had previously not produced any significant earthquakes, but between 2008 and 2020, a total of ∼2800 earthquakes were detected, with ∼16 of them being of moderate size (ML≥4.0). Applying double-difference relocation to improve relative locations reveals that the activity is linked to several subparallel faults striking southwest–northeast that extend across the entire crust. The southwest–northeast trend is als

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Doser, Diane I. "Source parameters of Montana earthquakes (1925-1964) and tectonic deformation in the northern Intermountain Seismic Belt." Bulletin of the Seismological Society of America 79, no. 1 (1989): 31–50. http://dx.doi.org/10.1785/bssa0790010031.

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Abstract Waveform modeling and first motion analysis are used to determine the source parameters of six 5.8 ≦ M ≦ 6.8 earthquakes that occurred between 1925 and 1964 within the northern Intermountain Seismic Belt of Montana. Results of this study suggest that the 1925 Clarkston earthquake occurred along an oblique normal fault with a trend similar to the southern end of the Clarkston Valley fault. The two largest earthquakes of the 1935 Helena sequence occurred along right-lateral strike-slip faults with trends similar to the Bald Butte and Helena Valley faults. The 1947 Virginia City earthqua

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Smith, Ellen M., Hilary R. Martens, and Michael C. Stickney. "Microseismic Evidence for Bookshelf Faulting in Western Montana." Seismological Research Letters 92, no. 2A (2021): 802–9. http://dx.doi.org/10.1785/0220200321.

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Abstract One of the most seismically active regions in the United States, located hundreds of kilometers inland from the nearest plate boundary, is the Intermountain Seismic Belt (ISB). The 6 July 2017 M 5.8 earthquake occurred 11 km southeast of Lincoln, Montana, within the ISB. This was the largest earthquake to rupture in the state of Montana since the 1959 M 7.3 Hebgen Lake earthquake. We use continuous seismic data from the University of Montana Seismic Network, the Montana Regional Seismic Network, and the U.S. Geological Survey to investigate the Lincoln aftershock sequence and to evalu

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Raharjo, Purnomo, June Mellawati, and Yarianto SBS. "Analisis Supposed Capable Fault Sebagai Data Dukung Rencana Tapak PLTN Bojonegara, Propinsi Banten." Jurnal Pengembangan Energi Nuklir 18, no. 1 (2016): 39. http://dx.doi.org/10.17146/jpen.2016.18.1.2857.

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ANALISIS SUPPOSED CAPABLE FAULT SEBAGAI DATA DUKUNG RENCANA TAPAK PLTN BOJONEGARA, PROPINSI BANTEN. Lokasi sesar dan daerah beradius 150 km dari garis sesar atau zona sesar merupakan daerah yang tertolak atau dihindari dalam pemilihan daerah tapak interes PLTN. Tujuan penelitian adalah untuk mengidentifikasi keberadaan sesar permukaan atau sesar kapabel di lokasi tapak PLTN. Metodologi penelitian meliputi interpretasistruktur sesar, analisis seismik refleksi di darat dan laut, analisis seismotektonik, dan menentukan daerah terbebas bahaya pensesaran permukaan. Wilayah studi regional, yaitu rad

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Komatsubara, Taku. "Right lateral active faults in the western part of the Ryohaku Mountains,central Japan." BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN 57, no. 7-8 (2007): 229–37. http://dx.doi.org/10.9795/bullgsj.57.229.

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Georgiadis, G. Α., M. D. Tranos, and D. M. Mountrakis. "LATE-AND POST-ALPINE TECTONIC EVOLUTION OF THE SOUTHERN PART OF THE ATHOS PENINSULA, NORTHERN GREECE." Bulletin of the Geological Society of Greece 40, no. 1 (2018): 309. http://dx.doi.org/10.12681/bgsg.16576.

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The boundary between Internal Hellenides and the Hellenic hinterland is exposed in the southern part of the Athos peninsula as a NE-SW trending contact between the Serbomacedonian massif and the Circum-Rhodope Belt. The main tectonic features and deformation of the area during late- and post-alpine times have been investigated in order to understand better the late orogenic processes that led to the present arrangement of this boundary. The field study showed that the prevailing structures in the southern Athos peninsula are an asymmetric, SW-plunging, NWverging mega-scale antiform and a NE-SW

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Fittall, A. M., and R. G. Cowley. "THE HV11 3-D SEISMIC SURVEY: SKUA – SWIFT AREA GEOLOGY REVEALED?" APPEA Journal 32, no. 1 (1992): 159. http://dx.doi.org/10.1071/aj91013.

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The 4630 km of HV11 3-D seismic survey data, shot over the Skua and Swift fault blocks in Timor Sea licence AC/L4, reveals details of Tithonian faulting not evident previously. The HV11 survey provided 10 times the data density of previous coverage and significantly improved data quality through the recording of lower frequencies and use of accurate navigation systems and high resolution processing parameters.Tithonian faulting is revealed as a series of northeast-trending en echelon faults overprinting a deeper, north-northeastern, possibly latest Triassic, trend which defines the major fault

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Liao, Zonghu, Hui Liu, Zheng Jiang, Kurt J. Marfurt, and Ze’ev Reches. "Fault damage zone at subsurface: A case study using 3D seismic attributes and a clay model analog for the Anadarko Basin, Oklahoma." Interpretation 5, no. 2 (2017): T143—T150. http://dx.doi.org/10.1190/int-2016-0033.1.

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Using 3D seismic attributes and the support of a clay model that served as an analog, we mapped and analyzed a 32 km (20 mi) long, north–south-striking, right-lateral fault in the Woodford Shale, Anadarko Basin, Oklahoma, USA. Volumetric coherence, dip azimuth, and curvature delineated an approximately 1.5 km (approximately 5000 ft) wide damage zone with multiple secondary faults, folds, and flexures. The clay analog enabled us to identify these features as belonging to a complex transpressional Riedel structure. We also suggest that the damage zone contains dense subseismic fractures associat

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Michelsen, Olaf, Niels Frandsen, Lise Holm, Thorkild Feldthusen Jensen, Jens Jørgen Møller, and Ole Valdemar Vejbæj. "Jurassic - Lower Cretaceous of the Danish Central Trough; - depositional environments, tectonism, and reservoirs." Danmarks Geologiske Undersøgelse Serie A 16 (December 15, 1987): 1–45. http://dx.doi.org/10.34194/seriea.v16.7035.

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A revised model for the Jurassic - Early Cretaceous basin development in the Danish Central Trough is described on the basis of new studies of the bio- and lithostratigraphy and sedimentological and seismic data. The trough has been subdivided into a number of areas, each characterized by specific structural evolution. Middle Jurassic fluvio-deltaic and coastal sands follow the mid Cimmerian unconformity and probably cover large parts of the trough. Right-lateral movements, initiated during the Late Jurassic along WNWESE trending faults, caused fault controlled basin subsidence. The Jurassic a

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Wang, Kang, Douglas S. Dreger, Elisa Tinti, Roland Bürgmann, and Taka’aki Taira. "Rupture Process of the 2019 Ridgecrest, California Mw 6.4 Foreshock and Mw 7.1 Earthquake Constrained by Seismic and Geodetic Data." Bulletin of the Seismological Society of America 110, no. 4 (2020): 1603–26. http://dx.doi.org/10.1785/0120200108.

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ABSTRACT The 2019 Ridgecrest earthquake sequence culminated in the largest seismic event in California since the 1999 Mw 7.1 Hector Mine earthquake. Here, we combine geodetic and seismic data to study the rupture process of both the 4 July Mw 6.4 foreshock and the 6 July Mw 7.1 mainshock. The results show that the Mw 6.4 foreshock rupture started on a northwest-striking right-lateral fault, and then continued on a southwest-striking fault with mainly left-lateral slip. Although most moment release during the Mw 6.4 foreshock was along the southwest-striking fault, slip on the northwest-strikin

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Susong, D., R. Smith, and R. Bruhn. "Earthquake Hazards of the Grand Teton National Park Emphasizing the Teton Fault." UW National Parks Service Research Station Annual Reports 11 (January 1, 1987): 106–30. http://dx.doi.org/10.13001/uwnpsrc.1987.2649.

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The Teton normal-fault zone extends for over 80 km along the eastern front of the Teton Range. Mapping and profiling of Quaternary fault scarps shows that the scarps are nearly continous for 55 km with scarp heights varying from about 10 m to 40 m. The largest scarps occur adjacent to the topographically highest parts of the Teton range. The scarps locally offset glacial moraine crests in a left-lateral sense. On a regional scale the scarps exhibit a right-stepping, en echelon geometry that is also consistent with a component of left-lateral displacenent. The Teton fault is structurally subdiv

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Perincek, D., and C. D. Cockshell. "THE OTWAY BASIN: EARLY CRETACEOUS RIFTING TO NEOGENE INVERSION." APPEA Journal 35, no. 1 (1995): 451. http://dx.doi.org/10.1071/aj94029.

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A regional seismic interpretation ot the on shore Otway Basin has been completed and used to determine the basin's structural history.Sedimentation commenced in the Tithonian-Berriasian with the deposition of the volcanogenic Casterton Formation and continued into the Berriasian-Barremian with the deposition in elongate half graben, of thick fluviolacustrine sediments of the Crayfish Group, typically thickening dramatically towards the bounding faults. The NW to W trend of Crayfish Group depocentres and their major bounding faults suggest that the initial extension direction was N-S to NE-SW i

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Buchan, Kenneth L., and Richard E. Ernst. "Onaping fault system: age constraints on deformation of the Kapuskasing structural zone and units underlying the Sudbury Structure." Canadian Journal of Earth Sciences 31, no. 7 (1994): 1197–205. http://dx.doi.org/10.1139/e94-105.

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The deformation of the Matachewan dyke swarm of the Superior Province, which includes a 60 km right-lateral offset and moderate uplift localized along the Kapuskasing structural zone, represents an important time marker in the evolution of the zone. However, the age of this deformation is poorly constrained. Here, it is shown that the prominent Mattagami River – Upper Wanapitei River fault of the Onaping fault system, which offsets 2167 Ma Biscotasing dykes south of the Kapuskasing structural zone, can be aligned with a fault of similar offset north of the zone after the Matachewan swarm is re

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Zhuo, Yan-Qun, Yanshuang Guo, S. A. Bornyakov, and Jin Ma. "A TEST OF THE OBLIQUE-RIFTING MODEL FOR TRANSFER ZONE DEFORMATION IN THE NORTHERN FEN-WEI RIFT: IMPLICATIONS FROM THE 1989 M 6.1 DATONG-YANGGAO EARTHQUAKE SWARM." Geodynamics & Tectonophysics 10, no. 1 (2019): 43–51. http://dx.doi.org/10.5800/gt-2019-10-1-0403.

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Tectonophysical experiments show that the evolution of the Fen-Wei Rift is controlled by oblique rifting. A key characteristic of the model in our study is that the western and eastern borders of the transfer zone between the adjacent NEE-striking extensional basins tend to form right-lateral strike-slip faults with slight normal slip as a result of the interaction between the adjacent NEE-striking extensional basins under oblique rifting. The current deformation of the Fen-Wei Rift can be clarified by testing this predicted deformation characteristic. Our analysis of the relocation and focal

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Freymueller, J., N. E. King, and P. Segall. "The co-seismic slip distribution of the Landers earthquake." Bulletin of the Seismological Society of America 84, no. 3 (1994): 646–59. http://dx.doi.org/10.1785/bssa0840030646.

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Abstract We derived a model for the co-seismic slip distribution on the faults which ruptured during the Landers earthquake sequence of 28 June 1992. The model is based on the inversion of surface geodetic measurements, primarily vector displacements measured using the Global Positioning System (GPS). The inversion procedure assumes that the slip distribution is to some extent smooth and purely right-lateral strike slip. For a given fault geometry, a family of solutions of varying smoothness can be generated. We choose the optimal model from this family based on cross-validation, which measure

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Hovakimyan, Samvel, Robert Moritz, Rodrik Tayan, Rafael Melkonyan, and Marianna Harutyunyan. "Cenozoic Strike-Slip Tectonics and Structural Controls of Porphyry Cu-Mo and Epithermal Deposits During Geodynamic Evolution of the Southernmost Lesser Caucasus, Tethyan Metallogenic Belt." Economic Geology 114, no. 7 (2019): 1301–37. http://dx.doi.org/10.5382/econgeo.4662.

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Abstract The Zangezur-Ordubad mining district of the southernmost Lesser Caucasus is located in the central segment of the Tethyan metallogenic belt and consists of porphyry Cu-Mo and epithermal Au and base metal systems hosted by the composite Cenozoic Meghri-Ordubad pluton. Ore-hosting structures and magmatic intrusions are predominantly confined to a central N-S–oriented corridor 40 km long and 10 to 12 km wide, located between two regional NNW-oriented right-lateral faults, the Khustup-Giratagh and Salvard-Ordubad faults. The anatomy and kinematics of the main fault network are consistent

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de Castro, D. L., and F. H. R. Bezerra. "Fault evolution in the Potiguar rift termination, Equatorial margin of Brazil." Solid Earth Discussions 6, no. 2 (2014): 2885–913. http://dx.doi.org/10.5194/sed-6-2885-2014.

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Abstract. The transform shearing between South American and African plates in the Cretaceous generated a series of sedimentary basins on both plate margins. In this study, we use gravity, aeromagnetic, and resistivity surveys to identify fault architecture and to analyse the evolution of the eastern Equatorial margin of Brazil. Our study area is the southern onshore termination of the Potiguar rift, which is an aborted NE-trending rift arm developed during the breakup of Pangea. The Potiguar rift is a Neocomian structure located in the intersection of the Equatorial and western South Atlantic

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ROSSELLO, Eduardo A., and Sergio A. LÓPEZ. "TRANSTENSIVE ORIGIN OF THE ENCADENADAS-VALLIMANCA CORRIDOR (BUENOS AIRES, ARGENTINA): A REVISION AND A NEW PROPOSAL FROM SATELLITE IMAGES." Geosciences = Geociências 39, no. 04 (2020): 965–76. http://dx.doi.org/10.5016/geociencias.v39i04.15107.

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The Encadenadas-Vallimanca Corridor (EVC) corresponds to a morphostructural linear feature defining the northern boundary of the Sierra de la Ventana and Tandil hills in the Buenos Aires province. The scarcity of concluding geological studies has resulted in diverse tectonic and hydrographic interpretations regarding the genesis of the corridor. A new analysis of surface morphology, mainly derived from satellite imagery, led to the identification of a series of gentle and elongated en échelon left-stepping relief features or ridges with cross-sectional asymmetric flanks, having an average leng

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PAVLIDES, S., S. KOCIU, P. MUKELLI, A. HYSENl, and N. ZOUROS. "Arhaeological evidence for seismic activity in Butrinti (SW Albania)and neotectonics of the area." Bulletin of the Geological Society of Greece 34, no. 1 (2001): 311. http://dx.doi.org/10.12681/bgsg.17028.

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This is a preliminary study of the neotectonics and the historical seismic destruction imprinted on the archaeological site of Butrinti (SW Albania). Two fault sets surround and intersect both the limestone hill with the archaeological site and the area around it. A normal N-S trending fault is located along the NW of Butrinti hill with an observable length of 1 km and a maximum vertical displacement of 3-4m. The southern part of the hill is confined by a steep tectonic scarp, trending E-W to NE-SW, which represent the continuity of the transcurrent (right-lateral strike-slip) fault of Norther

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Arsdale, Roy Van, Jodi Purser, William Stephenson, and Jack Odum. "Faulting along the southern margin of Reelfoot Lake, Tennessee." Bulletin of the Seismological Society of America 88, no. 1 (1998): 131–39. http://dx.doi.org/10.1785/bssa0880010131.

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Abstract The Reelfoot Lake basin, Tennessee, is structurally complex and of great interest seismologically because it is located at the junction of two seismicity trends of the New Madrid seismic zone. To better understand the structure at this location, a 7.5-km-long seismic reflection profile was acquired on roads along the southern margin of Reelfoot Lake. The seismic line reveals a westerly dipping basin bounded on the west by the Reelfoot reverse fault zone, the Ridgely right-lateral transpressive fault zone on the east, and the Cottonwood Grove right-lateral strike-slip fault in the midd

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