کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8908727 | 1636681 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Late Pleistocene acceleration of deformation across the northern Tianshan piedmont (China) evidenced from the morpho-tectonic evolution of the Dushanzi anticline
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Late Pleistocene acceleration of deformation across the northern Tianshan piedmont (China) evidenced from the morpho-tectonic evolution of the Dushanzi anticline Late Pleistocene acceleration of deformation across the northern Tianshan piedmont (China) evidenced from the morpho-tectonic evolution of the Dushanzi anticline](/preview/png/8908727.png)
چکیده انگلیسی
We document the temporal evolution of deformation in the northern Tianshan piedmont where the deformation is partitioned across several thrusts and folds. We focus on the Dushanzi anticline, where abandoned terraces and growth strata allow us to constrain the history of folding since the Miocene. Based on subsurface seismic imaging, structural measurements and morphological analysis, we show that this anticline is associated with two decollement levels. We use kink band migration in growth strata dated by paleomagnetism to constrain the shortening from the Mio-Pliocene to the Holocene. Our results show that the Dushanzi anticline has been active since at least 8â¯Ma and that the fold grew at a steady shortening rate of 0.6â¯Â±â¯0.1â¯mm/yr from 8 to ~1.5â¯Ma with possible variations from 2.5 to 1.5â¯Ma. Then it accelerated rapidly to a rate of 4.3â¯Â±â¯1.0â¯mm/yr over at least the last 100â¯ka. These results, together with similar temporal shortening evolutions across other structures, suggest that the deformation rate across the eastern Tianshan piedmont increased relatively recently. This may reflect either a redistribution of the deformation from the internal structures toward the borders or a general acceleration of the deformation across the entire range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volume 730, 4 April 2018, Pages 132-140
Journal: Tectonophysics - Volume 730, 4 April 2018, Pages 132-140
نویسندگان
Julien Charreau, Dimitri Saint-Carlier, Jérôme Lavé, Stéphane Dominguez, Pierre-Henri Blard, Jean-Philippe Avouac, Nathan D. Brown, Luca Claude Malatesta, Wang Shengli, Edward J. Rhodes,