TECTONIC, VOLCANIC, AND HYDROTHERMAL EVENT SEQUENCE ON DECEPTION ISLAND (ANTARCTICA)

被引：64
|
作者：
REY, J
SOMOZA, L
MARTINEZFRIAS, J
机构：
[1] UNIV SALAMANCA,DEPT GEOL,SALAMANCA,SPAIN
[2] CSIC,MUSEO NACL CIENCIAS NAT,DEPT GEOL,E-28006 MADRID,SPAIN
来源：
GEO-MARINE LETTERS | 1995年 / 15卷 / 01期
关键词：
D O I：
10.1007/BF01204491
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
On the basis of the correlation between seismic tectonostratigraphic units, volcanism, and geochemical distribution patterns of sea-floor sediments on Deception Island (Antarctica), a regional tectonic extension is suggested to explain the sequence of volcanic and hydrothermal events. The syncollapse caldera episode is composed of five tectonostratigraphic units separated by progressively tilted and bent unconformities. Each unit shows a sequence of Quaternary volcanic cones and mound structures that display high contents of Fe, Mn, and Zn. As-rich active fumaroles and hot-spring areas are associated with the postcollapse episode and linked to normal faulting and present volcanism.
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页码：1 / 8
页数：8
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