کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4681958 1635138 2016 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
چکیده انگلیسی
Rare earth element and other chemical characteristics of the tuff intervals in the Maimará Formation fall into two distinct groups suggesting the tuffs were erupted from two distinct late Miocene source regions. The first and most abundant group has characteristics that best match tuffs erupted from the Guacha, Pacana and Pastos Grandes calderas, which are located 200 and 230 km west of the study area at 22º-23º30′S latitude. The members the second group are chemically most similar to the Merihuaca Ignimbrite from the Cerro Galán caldera 290 km south-southwest of the studied section. The distinctive geochemical characteristics are excellent tools to reconstruct the stratigraphic evolution of the Neogene Maimará basin from 6.4 to 4.8 Ma.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of South American Earth Sciences - Volume 72, December 2016, Pages 137-158
نویسندگان
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