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Relevant bibliographies by topics / Shortening and vergence

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Journal articles

Academic literature on the topic 'Shortening and vergence'

Author: Grafiati

Published: 25 May 2024

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Journal articles on the topic "Shortening and vergence"

1

Greenhalgh, Scott R., John H. McBride, John M. Bartley, R. William Keach, Brooks B. Britt, and Bart J. Kowallis. "Along-strike variability of thrust fault vergence." Interpretation 3, no. 3 (2015): SX1—SX12. http://dx.doi.org/10.1190/int-2014-0182.1.

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The 3D kinematic evolution of thrust systems, in which vergence changes along strike, is poorly understood. This study uses 3D seismic data from Big Piney-LaBarge field, Wyoming, to examine the geometry and kinematics of two faults at the leading edge of the Hogsback thrust sheet, the frontal thrust of the Late Cretaceous Sevier fold-thrust belt. These thrusts lie along strike of each another and share an east-vergent detachment within the Cretaceous Baxter Shale. The two thrusts verge in opposite directions: The southern thrust verges eastward forming a frontal ramp consistent with major thru

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2

Vasconcelos, Bruno Rodrigo, Amarildo Salina Ruiz, and João Batista de Matos. "Polyphase deformation and metamorphism of the Cuiabá group in the Poconé region (MT), Paraguay Fold and Thrust Belt: kinematic and tectonic implications." Brazilian Journal of Geology 45, no. 1 (2015): 51–63. http://dx.doi.org/10.1590/23174889201500010004.

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Several deformation models have been proposed for the Paraguay Belt, which primarily differ in the number of phases of deformation, direction of vergence and tectonic style. Structural features presented in this work indicate that the tectonics was dominated by low dip thrust sheets in an initial phase, followed by two progressive deformation phases. The first phase of deformation is characterized by a slate cleavage and axial plane of isoclinal recumbent folds with a NE axial direction, with a recrystallization of the minerals in the greenschist facies associated with horizontal shear zones w

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3

Gracia-Marroquín, Diego, Mariano Cerca, Dora Carreón-Freyre, and Bernardino Barrientos-García. "Analogue model of gravity driven deformation in the salt tectonics zone of northeastern Mexico." Revista Mexicana de Ciencias Geológicas 35, no. 3 (2018): 277–90. http://dx.doi.org/10.22201/cgeo.20072902e.2018.3.739.

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In the deep seated gravity-driven deformation systems of the Gulf of Mexico contemporaneous extension and contraction of the overburden is favored by mechanical decoupling from the basement along thick salt sequences (up to 4 km). The updip extension is located inland, on the continental shelf of northeast Mexico, and is characterized by extensional listric faults and roll-overs; the downdip shortening zone is located at the deep waters and is characterized by a fold and thrust belt detached above the salt layer. Two physical experiments are used to discuss some aspects of these gravity-driven

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4

Carboni, Filippo, Francesco Brozzetti, Francesco Mirabella, et al. "Geological and geophysical study of a thin-skinned tectonic wedge formed during an early collisional stage: the Trasimeno Tectonic Wedge (Northern Apennines, Italy)." Geological Magazine 157, no. 2 (2019): 213–32. http://dx.doi.org/10.1017/s001675681900061x.

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AbstractThe presence of a set of well-known turbidite successions, deposited in progressively E-migrating foredeep basins and subsequently piled up with east vergence, makes the Northern Apennines of Italy paradigmatic of the evolution of deepwater fold-and-thrust belts. This study focuses on the early Apenninic collisional stage, early Miocene in age, which led to the accretion of the turbidites of the Trasimeno Tectonic Wedge (TTW), in the central part of the Northern Apennines. Based on the interpretation of previously unpublished seismic reflection profiles with new surface geology data an

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5

van Kooten, Willemijn Sarah Maria Theresia, Hugo Ortner, Ernst Willingshofer, Dimitrios Sokoutis, Alfred Gruber, and Thomas Sausgruber. "Fold localization at pre-existing normal faults: field observations and analogue modelling of the Achental structure, Northern Calcareous Alps, Austria." Solid Earth 15, no. 1 (2024): 91–120. http://dx.doi.org/10.5194/se-15-91-2024.

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Abstract. Within the Northern Calcareous Alps (NCA) fold-and-thrust belt of the Eastern Alps, multiple pre-shortening deformation phases have contributed to the structural grain that controlled localization of deformation at later stages. In particular, Jurassic rifting and opening of the Alpine Tethys led to the formation of extensional basins at the northern margin of the Apulian plate. Subsequent Cretaceous shortening within the Northern Calcareous Alps produced the enigmatic Achental structure, which forms a sigmoidal transition zone between two E–W-striking major synclines. One of the maj

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6

McLoon, Linda K., Han na Park, Jong-Hee Kim, Fatima Pedrosa-Domellöf, and LaDora V. Thompson. "A continuum of myofibers in adult rabbit extraocular muscle: force, shortening velocity, and patterns of myosin heavy chain colocalization." Journal of Applied Physiology 111, no. 4 (2011): 1178–89. http://dx.doi.org/10.1152/japplphysiol.00368.2011.

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Extraocular muscle (EOM) myofibers do not fit the traditional fiber typing classifications normally used in noncranial skeletal muscle, in part, due to the complexity of their individual myofibers. With single skinned myofibers isolated from rectus muscles of normal adult rabbits, force and shortening velocity were determined for 220 fibers. Each fiber was examined for myosin heavy chain (MyHC) isoform composition by densitometric analysis of electrophoresis gels. Rectus muscle serial sections were examined for coexpression of eight MyHC isoforms. A continuum was seen in single myofiber shorte

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7

Wu, Jonny, Ken McClay, and Jose de Vera. "Growth of triangle zone fold-thrusts within the NW Borneo deep-water fold belt, offshore Sabah, southern South China Sea." Geosphere 16, no. 1 (2019): 329–56. http://dx.doi.org/10.1130/ges02106.1.

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Abstract The NW Borneo deep-water fold-and-thrust belt, offshore Sabah, southern South China Sea, contains a structurally complex region of three to four seafloor ridges outboard of the shelf-slope break. Previous studies have suggested the seafloor ridges formed either above shale diapirs produced by mass movement of overpressured shales (i.e., mobile shale) or above an imbricate fold-and-thrust array. Here, we performed tectonostratigraphic analyses on a petroleum industry three-dimensional (3-D) seismic volume that imaged the full growth stratal record. We show fold growth history, deformat

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8

Pinet, Nicolas, Sébastien Castonguay, and Alain Tremblay. "Thrusting and back thrusting in the Taconian internal zone, southern Quebec Appalachians." Canadian Journal of Earth Sciences 33, no. 9 (1996): 1283–93. http://dx.doi.org/10.1139/e96-097.

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Cambro-Ordovician continental-margin rocks of the Humber zone of the Quebec Appalachians were mainly deformed during the Taconian orogeny (Middle Ordovician to Early Silurian). Two Taconian deformational events are recorded west of the Sutton–Notre-Dame mountains anticlinorium axis. They are characterized, respectively, by northwest-directed faulting and synmetamorphic folding (D1−2) and by southeastward back-thrusting motion (D3); the latter deformation has previously been poorly documented in the Quebec Appalachians. This duality of structural vergence is probably induced by the progressive

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9

Qaisar, Sohail, Sajjad Ahmad, Mukhtiar Ghani, and Tehseen Ullah. "The Regional Extents of Local Thrust Systems in Jabbari and Rupper Town, South East of Hazara Pakistan." Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 65, no. 1 (2022): 87–96. http://dx.doi.org/10.52763/pjsir.phys.sci.65.1.2022.87.96.

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Geological traverse between the town of Jabbri and Rupper, southeast Hazara delineates the stratigraphic and structural element of the area presented by high resolution geological map and cross section of the area. Oldest rocks in this section is Precambrian Hazara formation which is disconformably overlain by a Jurassic to Eocene sequence including Samana Suk, Chichali, Lumshiwal, Kawagarh, Hangu, Lockhart, Patala, Margalla-hill-limestone, Chorgali and Kuldana formations. Located in Lesser Himalayas, under the influence of main boundary thrust (MBT), this area developed several thrust systems

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10

Högdahl, Karin, and Stefan Bergman. "Chapter 5 Paleoproterozoic (1.9–1.8 Ga), syn-orogenic magmatism and sedimentation in the Ljusdal lithotectonic unit, Svecokarelian orogen." Geological Society, London, Memoirs 50, no. 1 (2020): 131–53. http://dx.doi.org/10.1144/m50-2016-30.

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AbstractDuctile shear zones with dextral transpressive deformation separate the Ljusdal lithotectonic unit from the neighbouring units (Bothnia–Skellefteå and Bergslagen) in the 2.0–1.8 Ga Svecokarelian orogen. Sedimentation steered by regional crustal extension at c. 1.86–1.83 Ga was sandwiched between two separate phases of ductile strain with crustal shortening and predominantly high-grade metamorphism with plutonic activity. Metamorphism occurred under low-pressure, medium- to high-temperature conditions that locally reached granulite facies. The earlier shortening event resulted in the ac

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