کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1043457 | 1484247 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Late Holocene mobilisation of loess-like sediments in Hohuan Shan, high mountains of Taiwan
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
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چکیده انگلیسی
Silty cover soils are found in lower slope positions in the highest massifs of the high mountains of Taiwan. They are not formed under present-day conditions, and remain well preserved in locations not affected by fluvial morphodynamics. This study focuses on an outcrop in the Hohuan Mountain summit area. The sediment infill of a gully is described, and sediment properties are analysed. Size-frequency distributions of the sediment grains suggest that they are partly aeolian deposits. The loess-like sediments yielded OSL ages between 3.65 ± 0.62 ka and 1.72 ± 0.48 ka. Results from radiocarbon dating of organic-rich bulk sediments support the age estimates from OSL. The timing of gully infilling coincides with a cool and dry phase reported by palynological studies from Toushe Basin and Chitsai Lake. The sediment record reflects a large-scale climatic change to cooler and less humid conditions in the Hohuan Mountain area.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary International - Volume 234, Issues 1â2, 1 April 2011, Pages 174-181
Journal: Quaternary International - Volume 234, Issues 1â2, 1 April 2011, Pages 174-181
نویسندگان
Dirk Wenske, Margot Böse, Manfred Frechen, Christopher Lüthgens,