A calderas field at the Marifil Formation, new volcanogenic interpretation, Norpatagonian Massif, Argentina

被引：19

作者：

Aragon, E

Rodriguez, AMI

Benialgo, A

机构：

来源：

JOURNAL OF SOUTH AMERICAN EARTH SCIENCES | 1996年 / 9卷 / 5-6期

关键词：

D O I：

10.1016/S0895-9811(96)00017-X

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Major volcanogenic structures within the Marifil Formation allowed to determine the location of a claderas field that spreads along 400 kilometers. This field has at least three large calderas with diameters near to 100 kilometers, recognizable by regional distribution of associated dikes and rhyolite lava Rows present at the caldera border that separates a monotonous ignimbritic plateau from a depressed (150 meters) inner volcanic collapsed caldera. The Marifil ignimbritic plateau cover more than 50,000 square kilometers with thicknesses that reach 800 meters. Associated with these plateau ignimbrites there is an important fluorite mineralization. Copyright (C) 1996 Elsevier Science Ltd & Earth Sciences & Resources Institute

引用

页码：321 / 328

页数：8

共 22 条

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