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Journal articles on the topic 'GPS; Continental lithosphere'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Hyndman, Roy D., Paul Flück, Stephane Mazzotti, Trevor J. Lewis, John Ristau, and Lucinda Leonard. "Current tectonics of the northern Canadian Cordillera." Canadian Journal of Earth Sciences 42, no. 6 (2005): 1117–36. http://dx.doi.org/10.1139/e05-023.

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The northern Canadian Cordillera is remarkably tectonically and seismically active, extending from a terrane collision zone on the continental margin to an active fold and thrust belt at the eastern mountain front. The source and distribution of the deformation are constrained by (i) precision global positioning system (GPS) measurements; (ii) the seismicity distribution, mechanisms, and rates; (iii) the thermal regime; (iv) estimates of lithosphere thickness and strength; and (v) topography and gravity. The ongoing oblique collision of the Yakutat block in the northeast corner of the Gulf of

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2

Nokleberg, Warren J., David W. Scholl, Thomas K. Bundtzen, and David B. Stone. "Effects of Cenozoic subduction along the outboard margin of the Northern Cordillera: Derived from e-book on the Northern Cordillera (Alaska and Western Canada) and adjacent marine areas." Geosphere 16, no. 1 (2019): 33–61. http://dx.doi.org/10.1130/ges02045.1.

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Abstract This article describes the regional effects of Cenozoic subduction along the outboard margin of the Northern Cordillera (Alaska, USA, and Western Canada), and thereby acquaints the reader with several chapters of the e-book Dynamic Geology of the Northern Cordillera (Alaska, Western Canada, and Adjacent Marine Areas). This article and the e-book are written for earth-science students and teachers. The level of writing for the article and the source e-book is that of popular science magazines, and readers are encouraged to share this article with students and laypersons. The main thrus

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3

Lei, Ming, Jian-Lin Chen, Ji-Feng Xu, Yun-Chuan Zeng, and Qiu-Wei Xiong. "Late Cretaceous magmatism in the NW Lhasa Terrane, southern Tibet: Implications for crustal thickening and initial surface uplift." GSA Bulletin 132, no. 1-2 (2019): 334–52. http://dx.doi.org/10.1130/b31915.1.

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Abstract Crustal thickening and uplift of southern Tibet have been widely associated with India-Asia continental collision during the Cenozoic. However, recent studies indicated that the crust of the northwestern (NW) Lhasa Terrane was thickened during the late Mesozoic. Here we report geochronological and geochemical data for the Gaerqiong diorite porphyries (GPs) and Xiongma plutons (XPs) in the NW Lhasa terrane, southern Tibet. Zircon U-Pb dating suggests that these intrusive rocks were generated at ca. 85 and ca. 88 Ma, respectively. The GPs are characterized by high MgO, Cr, and Ni conten

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Dehler, S. A., and C. E. Keen. "Effects of rifting and subsidence on thermal evolution of sediments in Canada's east coast basins." Canadian Journal of Earth Sciences 30, no. 9 (1993): 1782–98. http://dx.doi.org/10.1139/e93-158.

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Regional maps of lithospheric deformation and thermal history have been derived for the eastern continental margin of Canada. Subsidence associated with the rifting and cooling stages of rifted margin formation was calculated from gridded maps of sediment thickness and bathymetry along the Labrador, Grand Banks, and Nova Scotian margins. A two-layer lithospheric extension model was used to compute the deformation and thermal evolution of each region. Deformation results show that the crust and lower lithosphere have generally stretched by different amounts, and that either crustal or subcrusta

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Kreemer, Corné, Geoffrey Blewitt, and Paul M. Davis. "Geodetic evidence for a buoyant mantle plume beneath the Eifel volcanic area, NW Europe." Geophysical Journal International 222, no. 2 (2020): 1316–32. http://dx.doi.org/10.1093/gji/ggaa227.

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SUMMARY The volcanism of the Eifel volcanic field (EVF), in west-central Germany, is often considered an example of hotspot volcanism given its geochemical signature and the putative mantle plume imaged underneath. EVF's setting in a stable continental area provides a rare natural laboratory to image surface deformation and test the hypothesis of there being a thermally buoyant plume. Here we use Global Positioning System (GPS) data to robustly image vertical land motion (VLM) and horizontal strain rates over most of intraplate Europe. We find a spatially coherent positive VLM anomaly over an

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Parphenuk, O. "Postcollisional evolution features of the intracontinental structures formed by overthrusting." Georesursy 20, no. 4 (2018): 377–85. http://dx.doi.org/10.18599/grs.2018.4.377-385.

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The investigation of intracontinental collision structures is conducted based on the complex model of the thermal and mechanical evolution of overthrusting process for the rheologically layered lithosphere, which includes brittle upper crust, the lower crust and lithospheric upper mantle with different effective viscosity values. Finite element models with Lagrangian approach were used for the problem simulation. It was shown that thermal evolution of continental orogens essentially results from the geometry and topography due to thrusting and postcollision stage. This work concentrates on the

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Friederich, W., A. Brüstle, L. Küperkoch, T. Meier, S. Lamara, and Egelados Working Group. "Focal mechanisms in the southern Aegean from temporary seismic networks – implications for the regional stress field and ongoing deformation processes." Solid Earth 5, no. 1 (2014): 275–97. http://dx.doi.org/10.5194/se-5-275-2014.

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Abstract. The lateral variation of the stress field in the southern Aegean plate and the subducting Hellenic slab is determined from recordings of seismicity obtained with the CYCNET and EGELADOS networks in the years from 2002 to 2007. First motions from 7000 well-located microearthquakes were analysed to produce 540 well-constrained focal mechanisms. They were complemented by another 140 derived by waveform matching of records from larger events. Most of these earthquakes fall into 16 distinct spatial clusters distributed over the southern Aegean region. For each cluster, a stress inversion

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Khomich, V. G., and N. G. Boriskina. "ORE, OIL-AND-GAS REGIONS OF THE SOUTH OKHOTSK SEA PROVINCE AND DEEP GEODYNAMICS." Tikhookeanskaya Geologiya 39, no. 6 (2020): 3–24. http://dx.doi.org/10.30911/0207-4028-2020-39-6-3-24.

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In the South Okhotsk Sea province – on the islands of Sakhalin, Kunashir, Iturup, Urup and surrounding sea areas – many occurrences of rare, noble metal and other mineralizations as well as of oil-and-gas fields, gas hydrate accumulations, and isolated areas of active emission of water-hydrocarbon gases are known. Occurrences and deposits of solid, liquid and gaseous mineral resources are controlled by hidden deep fault transform zones: Nosappu (Tuscarora), Iturup, and Urup. These long-lived extended (more than 1000 km) zones are distinguished at the N-W Pacific megaplate margin near the S-E f

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Akhmetov, A. Zh, and I. Yu Smolin. "NUMERICAL MODELING OF THE STRESS-STRAIN STATE OF THE YAKUTSK-VILYUI LARGE IGNEOUS PROVINCE FOR THE ANALYSIS OF GEOTECTONIC PROCESSES IN THE SIBERIAN CRATON." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 69 (2021): 53–68. http://dx.doi.org/10.17223/19988621/69/5.

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Stress and strain distributions in the Yakutsk-Vilyui large igneous province (LIP) are numerically simulated under geotectonic extension. A two-dimensional model of the geological structure of a part of the Yakutsk-Vilyui LIP is developed using the geophysical data from the profile “Craton-1980”. However, these geophysical data can only be a source of the geometrical model and elastic properties of Earth’s layers. To describe non-elastic strains during the geological process, the Drucker-Prager-Nikolaevsky model of plasticity is adopted. For elastoplastic analysis of the geotectonic process, t

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10

Han, Dong Yin. "The Mechanism of the Earth's Epidermis Warming Caused by Exploitation of Fossil Fuels." Applied Mechanics and Materials 535 (February 2014): 460–63. http://dx.doi.org/10.4028/www.scientific.net/amm.535.460.

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The techniques are referred to as analyzing the relationship between the events of the lithosphere getting thermal and the changes of weakened release energies of strong earthquakes that might be related with the ones of increased exploitation quantities of the global three-large fossil fuels of coal,oil and gas ,and the relationship between the events of earth crust expansion getting thermal with the accumulated increasing of the land crust expansion thickness from calculation and the accumulated increasing of fossil fuels being exploited,et al. The three mechanism-modes of earth's epidermis

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11

Bell, K., A. N. Zaitsev, J. Spratt, S. Fröjdö, and A. S. Rukhlov. "Elemental, lead and sulfur isotopic compositions of galena from Kola carbonatites, Russia – implications for melt and mantle evolution." Mineralogical Magazine 79, no. 2 (2015): 219–41. http://dx.doi.org/10.1180/minmag.2015.079.2.01.

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AbstractGalena from four REE-rich (Khibina, Sallanlatvi, Seblyavr, Vuoriyarvi) and REE-poor (Kovdor) carbonatites, as well as hydrothermal veins (Khibina) all from the Devonian Kola Alkaline Province of northwestern Russia was analysed for trace elements and Pb and S isotope compositions. Microprobe analyses show that the only detectable elements in galena are Bi and Ag and these vary from not detectable to 2.23 and not detectable to 0.43 wt.% respectively. Three distinct galena groups can be recognized using Bi and Ag contents, which differ from groupings based on Pb isotope data. The Pb isot

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12

Ostřihanský, L. "Causes of earthquakes and lithospheric plates movement." Solid Earth Discussions 4, no. 2 (2012): 1411–83. http://dx.doi.org/10.5194/sed-4-1411-2012.

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Abstract. The goal of the paper was to verify triggering of earthquakes by the length of day variations, i.e. the sidereal 13.66 days Earth's rotation variations, in contrast with tidal biweekly 14.76 days variations (full and new Moon), which for hundred years of investigation give negative results. Earthquake triggering governed by sidereal variations caused by variable Moon's declination accelerates and decelerates the Earth's rotation. Profound Schuster's test proved that earthquakes are triggered both in Earth's deceleration and acceleration. For this investigation the most prominent eart

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Nurmukhamedov, Alexandr G., Mikhail D. Sidorov, and Yury F. Moroz. "A model of the deep structure of the Earth’s crust and upper mantle in the area of the Karymshinsky gold-ore cluster according to geophysical data (South Kamchatka)." Georesursy 22, no. 1 (2020): 63–72. http://dx.doi.org/10.18599/grs.2020.1.63-72.

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In the South of Kamchatka, modern geodynamic processes are actively taking place. A deep geological and geophysical model of the structure of the Earth’s crust and upper mantle along the regional profile of the Apacha Village-Mutnaya Bay in the zone of Tolmachevsky active magmatic center is presented. The profile passes near the South-Western border of the Karymshinskaya volcano-tectonic structure (VTS) and crosses the Ahomtenskaya VTS. The model created on the basis of integrated interpretation of materials of the earthquake converted-wave method (ECWM), gravity and magnetotelluric sounding (

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14

Hughes, Lewis, Simon Cuthbert, Alex Quas-Cohen, et al. "Halogens in Eclogite Facies Minerals from the Western Gneiss Region, Norway." Minerals 11, no. 7 (2021): 760. http://dx.doi.org/10.3390/min11070760.

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Ultra-high-pressure (UHP) eclogites and ultramafites and associated fluid inclusions from the Western Gneiss Region, Norwegian Caledonides, have been analysed for F, Cl, Br and I using electron-probe micro-analysis, time-of-flight secondary ion mass spectrometry and neutron-irradiated noble gas mass spectrometry. Textures of multi-phase and fluid inclusions in the cores of silicate grains indicate formation during growth of the host crystal at UHP. Halogens are predominantly hosted by fluid inclusions with a minor component from mineral inclusions such as biotite, phengite, amphibole and apati

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15

Phipps Morgan, J., T. J. Reston, and C. R. Ranero. "Contemporaneous mass extinctions, continental flood basalts, and ‘impact signals’: are mantle plume-induced lithospheric gas explosions the causal link?" Earth and Planetary Science Letters 217, no. 3-4 (2004): 263–84. http://dx.doi.org/10.1016/s0012-821x(03)00602-2.

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Kakourova, Anna, Anatolii Klyuchevskii, Vladimir Dem’yanovich, and Anna Klyuchevskaya. "Geoinformational criteria for distinguishing the quasi-linear chains of earthquake migration in epicentral fields of complex geometry and variable density of shocks distribution." Geoinformatika, no. 2 (June 1, 2021): 4–25. http://dx.doi.org/10.47148/1609-364x-2021-2-4-25.

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Within the framework of the basic model of migrating seismicity, the main geoinformation criteria for identifying quasi-linear chains of earthquakes in epicentral fields of complex geometry and variable density of shock distribution have been determined by numerical methods. The developed model is used to study the migrations of earthquake foci and identify zones of hidden seismically active faults: it provides statistical criteria for the presence of quasi-linear chains of seismicity migration and zones of hidden seismic faults in arrays of various volumes of seismological data as an ex

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17

Marques, Fernando O., Nibir Mandal, Subhajit Ghosh, Giorgio Ranalli, and Santanu Bose. "Channel flow, tectonic overpressure, and exhumation of high-pressure rocks in the Greater Himalayas." Solid Earth 9, no. 5 (2018): 1061–78. http://dx.doi.org/10.5194/se-9-1061-2018.

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Abstract. The Himalayas are the archetype of continental collision, where a number of long-standing fundamental problems persist in the Greater Himalayan Sequence (GHS): (1) contemporaneous reverse and normal faulting, (2) inversion of metamorphic grade, (3) origin of high- (HP) and ultrahigh-pressure (UHP) rocks, (4) mode of ductile extrusion and exhumation of HP and UHP rocks close to the GHS hanging wall, (5) flow kinematics in the subduction channel, and (6) tectonic overpressure, here defined as TOP = P∕PL where P is total (dynamic) pressure and PL is lithostatic pressure. In this study w

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18

Goshovskyi, Sergii V., Oleksii O. Likhosherstov, Olexandr M. Shevchenko, and Svitlana G. Slonitska. "The relation of the northwestern shelf deep geological structure of the Black Sea with the phenomenon of gas seeps." Journal of Geology, Geography and Geoecology 29, no. 3 (2020): 495–501. http://dx.doi.org/10.15421/112044.

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Geophysical model inputs were the results of a survey on an anomalous magnetic field and a gravitational field of the Black Sea’s north-western shelf. Thegeophysical profiles of the complex effective parameter (CEP) are calculated and graphed. Complex effective parameter characterizes the relationship between the effective densities and the magnetization by their spatial distribution. Effective parameters (magnetization, density, CEP) were calculated within the studyarea with their distribution on the optimum depth. The profiles are meridional and parallel to each other, direction of the profi

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19

Donzé, Frédéric-Victor, Laurent Truche, Parisa Shekari Namin, Nicolas Lefeuvre, and Elena F. Bazarkina. "Migration of Natural Hydrogen from Deep-Seated Sources in the São Francisco Basin, Brazil." Geosciences 10, no. 9 (2020): 346. http://dx.doi.org/10.3390/geosciences10090346.

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Hydrogen gas is seeping from the sedimentary basin of São Franciso, Brazil. The seepages of H2 are accompanied by helium, whose isotopes reveal a strong crustal signature. Geophysical data indicates that this intra-cratonic basin is characterized by (i) a relatively high geothermal gradient, (ii) deep faults delineating a horst and graben structure and affecting the entire sedimentary sequence, (iii) archean to paleoproterozoïc basements enriched in radiogenic elements and displaying mafic and ultramafic units, and (iv) a possible karstic reservoir located 400 m below the surface. The high geo

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20

Steffen, H., P. Wu, and H. Wang. "Optimal locations of sea-level indicators in glacial isostatic adjustment investigations." Solid Earth Discussions 5, no. 2 (2013): 2419–48. http://dx.doi.org/10.5194/sed-5-2419-2013.

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Abstract. Fréchet (sensitivity) kernels are an important tool in glacial isostatic adjustment (GIA) investigations to understand lithospheric thickness, mantle viscosity and ice-load model variations. These parameters influence the interpretation of geologic, geophysical and geodetic data, which contribute to our understanding of global change. Recently, sensitivity kernels have been extended to laterally heterogeneous Earth models using the finite-element formulation, which enabled detailed studies on the sensitivity of the different geodetic observations of GIA such as GPS and terrestrial an

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Kirdyashkin, A. A., A. G. Kirdyashkin, V. E. Distanov, and I. N. Gladkov. "ON HEAT SOURCE IN SUBDUCTION ZONE." Geodynamics & Tectonophysics 12, no. 3 (2021): 471–84. http://dx.doi.org/10.5800/gt-2021-12-3-0534.

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The subduction of an oceanic plate is studied as the motion of a high-viscosity Newtonian fluid. The subducting plate spreads along the 670-km depth boundary under the influence of oppositely directed horizontal forces. These forces are due to oppositely directed horizontal temperature gradients. We consider the flow structure and heat transfer in the layer that includes both the oceanic lithosphere and the crust and moves underneath a continent. The heat flow is estimated at the contact between the subducting plate and the surrounding mantle in the continental limb of the subduction zone. Our

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Murphy, J. Brendan. "The Role of the Ancestral Yellowstone Plume in the Tectonic Evolution of the Western United States." Geoscience Canada 43, no. 4 (2016): 231. http://dx.doi.org/10.12789/geocanj.2016.43.105.

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Plate reconstructions indicate that if the Yellowstone plume existed prior to 50 Ma, then it would have been overlain by oceanic lithosphere located to the west of the North American plate (NAP). In the context of models supporting long-lived easterly directed subduction of oceanic lithosphere beneath the NAP, the Yellowstone plume would have been progressively overridden by the NAP continental margin since that time, the effects of which should be apparent in the geological record. The role of this ‘ancestral’ Yellowstone plume and its related buoyant swell in influencing the Late Mesozoic–Ce

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23

PHIPPSMORGAN, J., T. RESTON, and C. RANERO. "Reply to A. Glikson's comment on ‘Contemporaneous mass extinctions, continental flood basalts, and ‘impact signals’: Are mantle plume-induced lithospheric gas explosions the causal link?’ [EPSL 217 (2004) 263–285]." Earth and Planetary Science Letters 236, no. 3-4 (2005): 938–41. http://dx.doi.org/10.1016/j.epsl.2005.05.037.

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24

Garde, Adam A., and Feiko Kalsbeek. "Colophon, contents, preface." Geological Survey of Denmark and Greenland (GEUS) Bulletin 11 (December 5, 2006): 1–7. http://dx.doi.org/10.34194/geusb.v11.4913.

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The present volume marks the completion of a large research project by the Geological Survey of Denmark and Greenland (GEUS), focused on the northern part of the Palaeoproterozoic Nagssugtoqidian orogen of central West Greenland, and carried out by a team of Danish and international participants. The project comprised geological mapping as well as structural, geochronological, geochemical and economic geological studies. This volume contains reports on both Archaean and Palaeoproterozoic geology as well as a study of neotectonic brittle structures. The field work was carried out in 2000-2003 i

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Kaviani, Ayoub, Meysam Mahmoodabadi, Georg Rümpker, et al. "Mantle-flow diversion beneath the Iranian plateau induced by Zagros’ lithospheric keel." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-81541-9.

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AbstractPrevious investigation of seismic anisotropy indicates the presence of a simple mantle flow regime beneath the Turkish-Anatolian Plateau and Arabian Plate. Numerical modeling suggests that this simple flow is a component of a large-scale global mantle flow associated with the African superplume, which plays a key role in the geodynamic framework of the Arabia-Eurasia continental collision zone. However, the extent and impact of the flow pattern farther east beneath the Iranian Plateau and Zagros remains unclear. While the relatively smoothly varying lithospheric thickness beneath the A

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26

"Geochemistry and models of mantle circulation." Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences 328, no. 1599 (1989): 425–39. http://dx.doi.org/10.1098/rsta.1989.0046.

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Geochemical data help to constrain the sizes of identifiable reservoirs within the framework of models of layered or whole-mantle circulation, and they identify the sources of the circulating heterogeneities as mainly crustal and/or lithospheric, but they do not decisively distinguish between different types of circulation. The mass balance between crust, depleted mantle and undepleted mantle based on 143 Nd/ 144 Nd, Nb/U and Ce/Pb, and the concentrations of very highly incompatible elements Ba, Rb, Th, U, and K, shows that ca. 25- 70% (by mass) of depleted mantle balances the trace element an

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D. Di Mauro, E. Armadillo, E. Bozzo, et al. "GDS (Geomagnetic Depth Sounding) in Italy: applications and perspectives." Annals of Geophysics 41, no. 3 (1998). http://dx.doi.org/10.4401/ag-4354.

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The analysis of geomagnetic field variations is a useful tool to detect electrical conductivity contrasts within the Earth. Lateral resolution of outlined patterns depends on the array dimensions and density of measurement sites over the investigated area. The inspection depth is constrained by the period of geomagnetic variations considered in data processing. Regions with significant geological features such as boundaries of continental plates, marginal areas of contact between tectonic units or other geodynamical processes, are of primary interest for the application of the MagnetoVariation

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Martin, A. P., A. F. Cooper, R. C. Price, C. L. Doherty, and J. A. Gamble. "A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica." Geological Society, London, Memoirs, May 5, 2021, M56–2019–42. http://dx.doi.org/10.1144/m56-2019-42.

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AbstractMantle xenoliths from southern Victoria Land have been collected and extensively studied for over a century. In this chapter, chemical and petrological data are, for the first time, comprehensively collated, and petrogenetic models for the regional mantle are reviewed and assessed. The most common lithologies are spinel lherzolite and harzburgite; plagioclase lherzolite also occurs, and pyroxenite xenoliths found across the province comprise <20% of all mantle xenoliths. The lithospheric mantle in the region has Paleoproterozoic stabilization ages, although pockets of younger mantle

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Corseri, R., S. Planke, J. I. Faleide, K. Senger, L. J. Gelius, and S. E. Johansen. "Opportunistic magnetotelluric transects from CSEM surveys in the Barents Sea." Geophysical Journal International, August 6, 2021. http://dx.doi.org/10.1093/gji/ggab312.

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Summary Magnetotelluric (MT) data allow for electrical resistivity probing of the Earth's subsurface. Integration of resistivity models in passive margin studies could help disambiguate non-unique interpretations of crustal composition derived from seismic and potential field data, a recurrent issue in the distal domain. In this contribution, we present the first marine MT data in the Barents Sea, derived from industrial controlled-source electromagnetic (CSEM) surveys. We characterize data quality, dimensionality, depth penetration and elaborate an analysis strategy. The extensive MT database

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