The Experts below are selected from a list of 2295 Experts worldwide ranked by ideXlab platform
Zhaojie Guo - One of the best experts on this subject based on the ideXlab platform.
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cenozoic structural inversion from Transtension to transpression in yingxiong range western qaidam basin new insights into strike slip superimposition controlled by altyn tagh and eastern kunlun faults
Tectonophysics, 2018Co-Authors: Xiang Cheng, Daowei Zhang, Marc Jolivet, Runchao Liu, Zhaojie GuoAbstract:Abstract A Cenozoic structural inversion event from Transtension to transpression involving salt tectonics has been uncovered in the Yingxiong Range, the western Qaidam Basin. Seismic reflection data show that there are two common structural styles in the Yingxiong Range: (1) the positive flower structure; (2) the thrust-controlled fold at shallow depth and the positive inverted flower structure at deep levels, which are separated by a salt layer in the upper Xiaganchaigou Formation. The Yingxiong Range experienced a first stage of Transtension in the Eocene, induced by the Altyn Tagh Fault, and a second stage of transpression from the early Miocene to present, jointly controlled by the Altyn Tagh and Eastern Kunlun Faults. The Eocene Transtension produced numerous NW-striking right-stepping en-echelon Transtensional normal faults or fractures in the Yingxiong Range. At the same time, evaporites and mudstone were deposited in the vicinity of these faults. In the early Miocene, the Eocene Transtensional normal faults were reactivated in a reverse sense, and the thrust-controlled folds at shallow depth started to form simultaneously. With transpression enhanced in the late Cenozoic, positive flower structures directly formed in places without evaporites. The Cenozoic Transtension to transpression inversion of the Yingxiong Range is the result of strike-slip superimposition controlled by the Altyn Tagh and Eastern Kunlun Faults in time and space.
Nasser Ennih - One of the best experts on this subject based on the ideXlab platform.
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from pan african transpression to cadomian Transtension at the west african margin new u pb zircon ages from the eastern saghro inlier anti atlas morocco
Geological Society London Special Publications, 2021Co-Authors: Ezzoura Errami, Ulf Linnemann, Mandy Hofmann, Andreas Gartner, Johannes Zieger, Jessica Gartner, Katja Mende, Jamal El Kabouri, Dominique Gasquet, Nasser EnnihAbstract:New U–Pb zircon ages from the Eastern Saghro massif in the Anti-Atlas of Morocco demonstrate alink between Pan-African transpressive collision at c. 600 Ma and Transtension caused by the onset of Cadomiansubduction and arc development from c. 570 Ma onwards. We present new U–Pb laser ablation inductivelycoupled plasma mass spectrometry ages of detrital and magmatic zircon from the Saghro, M’Gouna, and Ouar-zazate Groups. The siliciclastic deposits of the Saghro Group were deposited in a back-arc setting developed onstretched continental crust of the West African margin. Collision with the Atlas–Meseta domain led to theclosure of the back-arc basin before 600 Ma. Time of exhumation and surface exposure of the newly formedPan-African basement is bracketed to c. 30 Ma owing to the maximum depositional age of 571 + 4 Ma ofthe overlying M’Gouna Group. The U–Pb age of 567 + 4 Ma for the lowermost ignimbrite of the OuarzazateGroup limits the time for the deposition of the M’Gouna Group to less than 4 Ma. The Pan-African orogeny wasfinished at c. 600 Ma whereas the onset of Transtension related to Cadomian back-arc formation was very muchyounger from c. 570 Ma onwards.
Xiang Cheng - One of the best experts on this subject based on the ideXlab platform.
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cenozoic structural inversion from Transtension to transpression in yingxiong range western qaidam basin new insights into strike slip superimposition controlled by altyn tagh and eastern kunlun faults
Tectonophysics, 2018Co-Authors: Xiang Cheng, Daowei Zhang, Marc Jolivet, Runchao Liu, Zhaojie GuoAbstract:Abstract A Cenozoic structural inversion event from Transtension to transpression involving salt tectonics has been uncovered in the Yingxiong Range, the western Qaidam Basin. Seismic reflection data show that there are two common structural styles in the Yingxiong Range: (1) the positive flower structure; (2) the thrust-controlled fold at shallow depth and the positive inverted flower structure at deep levels, which are separated by a salt layer in the upper Xiaganchaigou Formation. The Yingxiong Range experienced a first stage of Transtension in the Eocene, induced by the Altyn Tagh Fault, and a second stage of transpression from the early Miocene to present, jointly controlled by the Altyn Tagh and Eastern Kunlun Faults. The Eocene Transtension produced numerous NW-striking right-stepping en-echelon Transtensional normal faults or fractures in the Yingxiong Range. At the same time, evaporites and mudstone were deposited in the vicinity of these faults. In the early Miocene, the Eocene Transtensional normal faults were reactivated in a reverse sense, and the thrust-controlled folds at shallow depth started to form simultaneously. With transpression enhanced in the late Cenozoic, positive flower structures directly formed in places without evaporites. The Cenozoic Transtension to transpression inversion of the Yingxiong Range is the result of strike-slip superimposition controlled by the Altyn Tagh and Eastern Kunlun Faults in time and space.
Ezzoura Errami - One of the best experts on this subject based on the ideXlab platform.
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from pan african transpression to cadomian Transtension at the west african margin new u pb zircon ages from the eastern saghro inlier anti atlas morocco
Geological Society London Special Publications, 2021Co-Authors: Ezzoura Errami, Ulf Linnemann, Mandy Hofmann, Andreas Gartner, Johannes Zieger, Jessica Gartner, Katja Mende, Jamal El Kabouri, Dominique Gasquet, Nasser EnnihAbstract:New U–Pb zircon ages from the Eastern Saghro massif in the Anti-Atlas of Morocco demonstrate alink between Pan-African transpressive collision at c. 600 Ma and Transtension caused by the onset of Cadomiansubduction and arc development from c. 570 Ma onwards. We present new U–Pb laser ablation inductivelycoupled plasma mass spectrometry ages of detrital and magmatic zircon from the Saghro, M’Gouna, and Ouar-zazate Groups. The siliciclastic deposits of the Saghro Group were deposited in a back-arc setting developed onstretched continental crust of the West African margin. Collision with the Atlas–Meseta domain led to theclosure of the back-arc basin before 600 Ma. Time of exhumation and surface exposure of the newly formedPan-African basement is bracketed to c. 30 Ma owing to the maximum depositional age of 571 + 4 Ma ofthe overlying M’Gouna Group. The U–Pb age of 567 + 4 Ma for the lowermost ignimbrite of the OuarzazateGroup limits the time for the deposition of the M’Gouna Group to less than 4 Ma. The Pan-African orogeny wasfinished at c. 600 Ma whereas the onset of Transtension related to Cadomian back-arc formation was very muchyounger from c. 570 Ma onwards.
Guo Zhaojie - One of the best experts on this subject based on the ideXlab platform.
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Jurassic-Early Cenozoic Tectonic Inversion in the Qilian Shan and Qaidam Basin, North Tibet: New Insight From Seismic Reflection, Isopach Mapping, and Drill Core Data
'American Geophysical Union (AGU)', 2019Co-Authors: Cheng Feng, Zhang Daowei, Guo Zhaojie, Joliver Marc, Lu Huayu, Bo Zhang, Li Xiangzhong, Zhang Changhao, Zhang Hanzhi, Wang LinAbstract:The pre-Cenozoic structural pattern of Asia has had a strong impact on the localization and propagation of the Cenozoic deformation that gave birth to the Tibetan Plateau. Northern Tibet represents a key area to decipher the structural and kinematic links between the Mesozoic and Cenozoic evolution of Tibet. Nonetheless, the Mesozoic tectonic setting of the North Tibet and the role that the Paleozoic inherited Altyn Tagh Fault (ATF) shearing zone played in controlling the regional tectonic pattern during the deposition of the Mesozoic strata remain controversial. This study is based on seismic reflections, isopach maps of the Mesozoic strata in the Qaidam Basin, and provenance analysis using detrital zircon geochronological and heavy mineral contents. Seismic reflections and isopach maps demonstrate that sustained strike-slip motion along the ATF during the Early to Late Jurassic induced Transtensional basin formation. Further away from the main ATF (eastern parts of the Qilian Shan and the northern Qaidam Basin), Transtension also occurred along major faults, although local transpression developed in relay zones. Rotation in the regional stress field induced compression and basin inversion during the Late Jurassic to Early Cretaceous. The Cenozoic sedimentary rocks in these regions display widespread growth strata and angular unconformities characteristic of compression. This is consistent with topographic changes marked by sediment source variation evidenced by detrital zircon geochronology and heavy mineral analysis. We propose that the mechanism driving the Jurassic extension/Transtension in North Tibet could be related to far-field effects of subduction processes along the southern margins of the continent
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JURASSIC-EARLY CENOZOIC TECTONIC INVERSION IN THE QILIAN SHAN AND QAIDAM BASIN, NORTH TIBET: NEW INSIGHT FROM SEISMIC REFLECTION, ISOPACH MAPPING AND DRILL CORE DATA
HAL CCSD, 2019Co-Authors: Cheng Feng, Jolivet Marc, Guo ZhaojieAbstract:International audienceThe pre-Cenozoic structural pattern of Asia has had a strong impact on the localization and propagation of the Cenozoic deformation that gave birth to the Tibetan Plateau. Northern Tibet represents a key area to decipher the structural and kinematic links between the Mesozoic and Cenozoic evolution of Tibet. Nonetheless, the Mesozoic tectonic setting of the North Tibet, and the role that the Paleozoic inherited Altyn Tagh Fault (ATF) shearing zone played in controlling the regional tectonic pattern during the deposition of the Mesozoic strata remain controversial. This study is based on seismic reflections, isopach maps of the Mesozoic strata in the Qaidam Basin, and provenance analysis using detrital zircon geochronological and heavy mineral contents. Seismic reflections and isopach maps demonstrate that sustained strike-slip motion along the ATF during the early to late Jurassic induced the formation of Transtensional basins. Further away from the main ATF (eastern parts of the Qilian Shan and the northern Qaidam Basin), Transtension also occurred along major faults, although local transpression developed in relay zones. Rotation in the regional stress field induced compression and basin inversion during the late Jurassic - Cretaceous. The Cenozoic sedimentary rocks in these regions display widespread growth strata and angular unconformities characteristic of compression. This is consistent with topographic changes marked by sediment source variation evidenced by detrital zircon geochronology and heavy mineral analysis. We propose that the mechanism driving the Jurassic extension/Transtension in North Tibet could be related to far-field effects of subduction processes along the southern margins of the continent
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Cenozoic structural inversion from Transtension to transpression in Yingxiong Range, western Qaidam Basin: New insights into strike-slip superimposition controlled by Altyn Tagh and Eastern Kunlun Faults
'Elsevier BV', 2018Co-Authors: Cheng Xiang, Zhang Daowei, Jolivet Marc, Yu Xiangjiang, Du Wei, Liu Runchao, Guo ZhaojieAbstract:International audienceA Cenozoic structural inversion event from Transtension to transpression involving salt tectonics has been uncovered in the Yingxiong Range, the western Qaidam Basin. Seismic reflection data show that there are two common structural styles in the Yingxiong Range: (1) the positive flower structure; (2) the thrust-controlled fold at shallow depth and the positive inverted flower structure at deep levels, which are separated by a salt layer in the upper Xiaganchaigou Formation. The Yingxiong Range experienced a first stage of Transtension in the Eocene, induced by the Altyn Tagh Fault, and a second stage of transpression from the early Miocene to present, jointly controlled by the Altyn Tagh and Eastern Kunlun Faults. The Eocene Transtension produced numerous NW-striking right-stepping en-échelon Transtensional normal faults or fractures in the Yingxiong Range. At the same time, evaporites and mudstone were deposited in the vicinity of these faults. In the early Miocene, the Eocene Transtensional normal faults were reactivated in a reverse sense, and the thrust-controlled folds at shallow depth started to form simultaneously. With transpression enhanced in the late Cenozoic, positive flower structures directly formed in places without evaporites. The Cenozoic Transtension to transpression inversion of the Yingxiong Range is the result of strike-slip superimposition controlled by the Altyn Tagh and Eastern Kunlun Faults in time and space
