کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6444288 | 1640372 | 2014 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Apparent paleomagnetic rotations reveal Pliocene-Holocene internal deformation of the Tengchong Block, southeastern Tibetan Plateau
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present new paleomagnetic data from early Pliocene to Holocene volcanic rocks of the Tengchong volcanic field and Mangbang basin of the Tengchong (Lhasa) Block, Yunnan, along the eastern margin of the India-Asia collision zone. Two remanent magnetization components occur: a higher coercive one, carried by Ti-rich titanomagnetite and magnetite and likely of primary origin, and a lower coercive one, residing in magnetite and representing a more recent overprint. The Pleistocene-Holocene rocks of the Tengchong volcanic field yield an in situ overall mean direction of D/I = 352.5°/25.4°, indicating a southeastward tilt; we attribute the tilting to block rotation above listric normal faults that cut the Tengchong volcanic field. The in situ overall mean direction derived from Pliocene volcanic rocks of the Mangbang basin is D/I = 330.5°/54.2°. We explain this apparent counterclockwise rotation by northeastward tilting due to half-graben formation during normal faulting along the Nuangdeng fault zone along the eastern basin margin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Asian Earth Sciences - Volume 96, 15 December 2014, Pages 1-16
Journal: Journal of Asian Earth Sciences - Volume 96, 15 December 2014, Pages 1-16
نویسندگان
Daniela Kornfeld, Benita-Lisette Sonntag, Simon Gast, Jonathan Matthes, Lothar Ratschbacher, Jörg A. Pfänder, Sabine Eckert, Deliang Liu, Erwin Appel, Lin Ding,