SEA-LEVEL CHANGES AND TECTONICS IN THE QUATERNARY EXTENSIONAL BASIN OF THE SOUTH EVVOIKOS GULF, GREECE

被引：30

作者：

PERISSORATIS, C

VANANDEL, TH

机构：

[1] Institute of Geology and Mineral Exploration of Greece, Athens, 11527

[2] Department of Earth Sciences, Cambridge University, Cambridge, CB2 3EQ, Downing Street

来源：

TERRA NOVA | 1991年 / 3卷 / 03期

关键词：

D O I：

10.1111/j.1365-3121.1991.tb00147.x

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The tectonically active South Evvoikos Gulf forms the submerged part of a young basin produced by Neogene fragmentation of the Hellenides, so furnishing an opportunity to study the earliest stages of an extensional rift. Reflection profiles show three seismo-stratigraphic units: a thin Holocene unit A, a thick Late and Middle Pleistocene unit B, and a deformed Mesozoic-Cenozoic basal unit C. In the eastern Gulf, at least seven alternatingly stratified and acoustically transparent subunits are related to Pleistocene sea-level changes that episodically isolated the Gulf. Correlation with the global eustatic sea-level curve indicates that deposition in the Gulf, formed by southeastward divergence of its northern and southern boundary faults, began during the last million years. Subsequent glacio-eustatic sea-level changes superimposed major variations in depositional conditions on long-term subsidence. Lack of Pleistocene marine beds on the adjacent land implies that a high rate of subsidence confined lacustrine and marine deposition to the basin itself.

引用

页码：294 / 302

页数：9

共 16 条

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