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Book Chapter

Structure and Regional Tectonics of the Achara-Trialet Fold Belt and the Adjacent Rioni and Kartli Foreland Basins, Republic of Georgia

By
Chris J. Banks
Chris J. Banks
Royal Holloway University of London Egham, Surrey, United Kingdom
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;
Andrew G. Robinson
Andrew G. Robinson
JKX Oil & Gas pic Guildford, Surrey, United Kingdom
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;
Math P. Williams
Math P. Williams
Robertson Research International Ltd. Llanrhos, Llandudno, Gwynedd, United Kingdom
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Published:
January 01, 1997

Abstract

This chapter describes the geology of Georgia and the Georgian part of the Black Sea. It is based on geological maps and seismic interpretation, integrated with well data and outcrop studies. The geology of Georgia consists of two major thrust belts: the Greater Caucasus and the Achara-Trialet belt, separated by two foreland basins (Rioni and Kartli) with an intervening basement culmination, the Dziruli Massif. The Achara-Trialet belt comprises a thick Upper Cretaceous and Paleogene sequence that restores to a rift and postrift basin of probable Paleocene age, connecting to the Eastern Black Sea. The basin began to close by the Oligocene. Structures are detached at Aptian and Oligocene levels and are large and open. The Rioni Basin developed mainly during the Oligocene and the Miocene through loading by the Achara-Trialet belt folds. It dies out into the Eastern Black Sea as the foreland basin megasequence merges with the postrift fill of the latter. North of the Rioni Basin, the major thrust front is a large south-dipping monocline, in front of which there are extensive salients detached in Upper Jurassic evaporites. The Kartli Basin passes into the Kura Basin to the east, where the foreland basin is deformed by the Greater Caucasus south-vergent thrust structures.

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Contents

AAPG Studies in Geology

Regional and Petroleum Geology of the Black Sea and Surrounding Region

A. G. Robinson
A. G. Robinson
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American Association of Petroleum Geologists
ISBN electronic:
9781629810782
Publication date:
January 01, 1997

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