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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yang, XingFeng Cheng, Xin Zhou, YaNan Ma, Lun Zhang, XiaoDong Yan, ZhaoSheng Peng, XiMing Su, HaiLun Wu, HanNing |
| Copyright Year | 2016 |
| Abstract | Results of a systematic paleomagnetic study are reported based on Late Carboniferous to Early Permian sedimentary rocks on the north slope of the Tanggula Mountains, in the northern Qiangtang terrane (NQT), Tibet, China. Data revealed that magnetic minerals in limestone samples from the Zarigen Formation (CP^z)are primarily composed of magnetite, while those in sandstone samples from the Nuoribagaribao Formation (Pnr) are dominated by hematite alone, or hematite and magnetite in combination. Progressive thermal, or alternating field, demagnetization allowed us to isolate a stable high temperature component (HTC) in 127 specimens from 16 sites which successfully passed the conglomerate test, consistent with primary remnance. The tilt-corrected mean direction for Late Carboniferous to Early Permian rocks in the northern Qiangtang terrane is D $_{s}$=30.2°, I $_{s}$=- 40.9°, k $_{s}$=269.0, α $_{95}$=2.3°, N=16, which yields a corresponding paleomagnetic pole at 25.7°N, 241.5°E (dp/dm=2.8°/1.7°), and a paleolatitude of 23.4°S. Our results, together with previously reported paleomagnetic data, indicate that: (1) the NQT in Tibet, China, was located at a low latitude in the southern hemisphere, and may have belonged to the northern margin of Gondwana during the Late Carboniferous to Early Permian; (2) the Paleo-Tethys Ocean was large during the Late Carboniferous to Early Permian, and (3) the NQT subsequently moved rapidly northwards, perhaps related to the fact that the Paleo-Tethys Ocean was rapidly contracting from the Late Permian to Late Triassic while the Bangong Lake-Nujiang Ocean, the northern branch of the Neo-Tethys Ocean, expanded rapidly during this time. |
| Starting Page | 124 |
| Ending Page | 134 |
| Page Count | 11 |
| File Format | |
| ISSN | 16747313 |
| Journal | Science in China Series D: Earth Sciences |
| Volume Number | 60 |
| Issue Number | 1 |
| e-ISSN | 18691897 |
| Language | English |
| Publisher | Science China Press |
| Publisher Date | 2016-09-20 |
| Publisher Place | Beijing |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Northern Qiangtang terrane Late Carboniferous Early Permian Rock magnetism Conglomerate test Paleomagnetic pole Earth Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences |
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