on Deception Island (Antarctica)
Abstraet 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 sug-gested to explain the sequence of volcanic and hydro-thermal events. The...
Main Authors: | , , |
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Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1993
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Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.465.1278 http://tierra.rediris.es/publipapers/Deception_Geo_Marine.pdf |
Summary: | Abstraet 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 sug-gested to explain the sequence of volcanic and hydro-thermal events. The syncollapse caldera episode is com-posed of five tectonostratigraphic units separated by pro-gressively tilted and bent unconformities. Each unit shows a sequence of Quaternary volcanic ones and mound struc-tures 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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