A 2-Myr seismite record (3.6-1.6 Ma) from the western Qaidam Basin, NE Tibet
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2020
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| author | Lu, Yin Marco, Shmuel Wetzler, Nadav Fang, Xiaomin Alsop, Ian G Hubert-Ferrari, Aurélia |
| author_facet | Lu, Yin Marco, Shmuel Wetzler, Nadav Fang, Xiaomin Alsop, Ian G Hubert-Ferrari, Aurélia |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | As part of a joint Sino‐German (SG) project, the 723‐m‐deep core SG‐1b (38°21′9.46″N, 92°16′24.72″E) has been drilled from the crest of the Jianshan Anticline, western Qaidam Basin, NE Tibet during 2011. In this study, we focus on the core interval between ~260 and 0 m, which was dated at ~3.6-1.6 Ma. We identify the micro-faults, soft-sediment deformation, slump, and detachment surface in the core as paleoearthquake/tectonics indicators. The core records 164 seismites and five seismite clusters which occurred at 3.61-3.49 Ma, 3.39-3.19 Ma, 3.16-3.09 Ma, 3.00-2.91 Ma, and 2.81-2.75 Ma, suggesting the rate to tectonic strain release by the folds and thrusts in the western Qaidam Basin vary between 3.6 and 2.7 Ma and thus revealing episodic regional deformation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_922852 |
| institution | PANGAEA |
| language | en |
| publishDate | 2020 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | A 2-Myr seismite record (3.6-1.6 Ma) from the western Qaidam Basin, NE Tibet Lu, Yin Marco, Shmuel Wetzler, Nadav Fang, Xiaomin Alsop, Ian G Hubert-Ferrari, Aurélia detachment surface; folds; Late Pliocene; micro-faults; NE Tibet; paleoseismology; Qaidam Basin; regional deformation; seismites; slump; soft-sediment deformation; thrusts As part of a joint Sino‐German (SG) project, the 723‐m‐deep core SG‐1b (38°21′9.46″N, 92°16′24.72″E) has been drilled from the crest of the Jianshan Anticline, western Qaidam Basin, NE Tibet during 2011. In this study, we focus on the core interval between ~260 and 0 m, which was dated at ~3.6-1.6 Ma. We identify the micro-faults, soft-sediment deformation, slump, and detachment surface in the core as paleoearthquake/tectonics indicators. The core records 164 seismites and five seismite clusters which occurred at 3.61-3.49 Ma, 3.39-3.19 Ma, 3.16-3.09 Ma, 3.00-2.91 Ma, and 2.81-2.75 Ma, suggesting the rate to tectonic strain release by the folds and thrusts in the western Qaidam Basin vary between 3.6 and 2.7 Ma and thus revealing episodic regional deformation. |
| title | A 2-Myr seismite record (3.6-1.6 Ma) from the western Qaidam Basin, NE Tibet |
| topic | detachment surface; folds; Late Pliocene; micro-faults; NE Tibet; paleoseismology; Qaidam Basin; regional deformation; seismites; slump; soft-sediment deformation; thrusts |
| url | https://doi.org/10.1594/PANGAEA.922852 |