کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8907664 1635126 2018 46 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Geomorphology and internal architecture of Holocene sandy-gravel beach ridge plain and barrier spits at Río Chico area, Tierra del Fuego, Argentina
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
Geomorphology and internal architecture of Holocene sandy-gravel beach ridge plain and barrier spits at Río Chico area, Tierra del Fuego, Argentina
چکیده انگلیسی
The internal architecture and processes involved in the development of paraglacial sandy-gravel beach ridges and barrier spits have been analyzed by interpretation of ground-penetrating radar (GPR) records, satellite images and detailed topographical sections on Holocene deposits in Río Chico area, Tierra del Fuego, Argentina. These littoral deposits correspond to the infill of an extensive and shallow embayment facing the South Atlantic, and developed during the mid-Holocene. Radar facies were identified and characterized from both beach ridge plain and barrier spits. The radar facies in the beach ridge plain are interpreted as mainly progradational and regressive, associated with stages of high availability of sediment supply. On the contrary, barrier spits show a retrogradational pattern and occurred in transgressive conditions by rollover processes during periods of marked scarcity of sediment supply. Evolutionary models of the internal architecture of both beach ridge plain and barrier spits are developed for the southern hemisphere during stable sea level conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of South American Earth Sciences - Volume 84, July 2018, Pages 172-183
نویسندگان
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