کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9537411 1640990 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Long-term fluvial archives in the Fen Wei Graben, central China, and their bearing on the tectonic history of the India-Asia collision system during the Quaternary
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Long-term fluvial archives in the Fen Wei Graben, central China, and their bearing on the tectonic history of the India-Asia collision system during the Quaternary
چکیده انگلیسی
Staircases of large-scale river terraces are striking features of the landscape in the Fen Wei Graben, adjacent to the Qinling orogenic belts, central China. Field investigations indicate that all five river terraces are composed of a basal channel gravel and an overlying, thick loess-palaeosol succession. As Chinese loess stratigraphy has been well studied, it favours age determination of these terraces and their correlation with the marine oxygen isotope stages. Our research indicates that the ages of the five terraces are approximately 2.6, 1.2, 0.9, 0.65, and 0.15 Ma, respectively. The formation of these river terraces within the Fen Wei Graben has been attributed to NW-SE crustal extension, associated with left lateral displacement between the North and South China Blocks, in response to the northward movement of India towards Asia since Cenozoic time. Thus, the stepped terraces in the Fen Wei Graben reflects elements of the India-Asia collision systems, in which terraces define episodes of accelerated northward movement of India towards Asia during the Quaternary.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary Science Reviews - Volume 24, Issues 10–11, May 2005, Pages 1279-1286
نویسندگان
,