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Book Chapter

Influence of extension and compression on salt diapirism in its type area, East Carpathians Bend area, Romania

By
Mihai Stefanescu
Mihai Stefanescu
Forest Romania CorporationSos. Colentina 27 A, 72244 Bucharest, Romania
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Oprea Dicea
Oprea Dicea
Prospectiuni S.A.1 Coralilor Str., Bucharest 1, Romania
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Gabor Tari
Gabor Tari
Vanco EnergyOne Greenway Plaza, Houston, TX 77046, USA
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Published:
January 01, 1999

Abstract

The East Carpathians Bend area has a very complex structure characterized by the presence of nappes, their post-tectonic cover and salt diapirs. The salt forming the studied diapirs is Early Miocene (Burdigalian) in age. After its accumulation the salt was more or less continuously involved in alternating extensional and compressional stages that deformed it from its original tabular position to the present-day diapir. Five stages of salt deformation have been established: initial, pre-nappe emplacement, nappe emplacement, post-nappe emplacement and Wallachian. During all of these stages the salt was configured into different shapes: it formed a truncated cone during the initial stage, a mushroom head during the prenappe emplacement stage, and an increasingly more tapered shape with nappe emplacement and during the post-nappe emplacement stages. Finally, it was squeezed out and refashioned by strike-slip faulting during the Wallachian compressional stage of Pleistocene age.

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Contents

Geological Society, London, Special Publications

Salt, Shale and Igneous Diapirs in and around Europe

Bruno C. Vendeville
Bruno C. Vendeville
University of Texas, USA
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Yossi Mart
Yossi Mart
University of Haifa, Israel
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Jean-Louis Vigneresse
Jean-Louis Vigneresse
Université Nancy, France
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Geological Society of London
Volume
174
ISBN electronic:
9781862394223
Publication date:
January 01, 1999

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