کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4682994 1348959 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preservation of aeolian dunes by pahoehoe lava: An example from the Botucatu Formation (Early Cretaceous) in Mato Grosso do Sul state (Brazil), western margin of the Paraná Basin in South America
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
Preservation of aeolian dunes by pahoehoe lava: An example from the Botucatu Formation (Early Cretaceous) in Mato Grosso do Sul state (Brazil), western margin of the Paraná Basin in South America
چکیده انگلیسی

This paper reports on a contact between Botucatu and Serra Geral Formations in Mato Grosso do Sul state (southwestern border of the Paraná Basin), where this kind of sediment–lava interaction has never been described before. The palaeodune registers mean palaeocurrent towards southwest, and the main volcano-sedimentary features are preserved ripples, striations, chevron and crescentic marks, empty or sand-filled tubes and cooling cracks. These features indicate that when lava flows covered the dune, the Botucatu erg was active in the study area, hence consolidating the concept of the non-existence of a hiatus between the Botucatu and Serra Geral Formations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of South American Earth Sciences - Volume 25, Issue 3, May 2008, Pages 398–404
نویسندگان
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