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GEOREF RECORD

Stratigraphic evidence for Cimmerian events in NW Caucasus (Russia)

Maurizio Gaetani, Eduardo Garzanti, Riccardo Polino, Yuri Kiricko, Serghiei Korsakhov, Simonetta Cirilli, Alda Nicora, Roberto Rettori, Cristiano Larghi and Raffaella Bucefalo Palliani
Stratigraphic evidence for Cimmerian events in NW Caucasus (Russia)
Bulletin de la Societe Geologique de France (May 2005) 176 (3): 283-299

Abstract

The Upper Permian and Triassic sequences of the NW Caucasus present a good record of the Cimmerian events, rather undisturbed by the subsequent Alpine deformations. Original field work with new fossil identifications, microfacies analysis, and sandstone petrography were carried out. During the late Permian, active strike-slip basins were filled by continental clastics successions. Marine ingressions during the latest Permian, led to the formation of sponge reefs and skeletal carbonate ramps. During the Triassic, several siliciclastic wedges were intercalated within the marine carbonate succession. Most important is a conglomerate body made up of serpentinite pebbles of Spathian age (early Triassic), recording the exhumation and erosion of schistose antigorite serpentinites. By the late Anisian a severe deformation affected the Peredovoy (= Fore) Range of the NW Caucasus. Lower Triassic to Anisian sediments deformed also in chevron folds were overlaid with angular unconformity by a siliciclastic, and also volcaniclastic, conglomeratic and arenitic body, up to several hundred meters thick. By the late Ladinian-earliest Carnian, marine sedimentation resumed locally, forming a carbonate ramp during part of the Norian. Towards the end of the Norian, the entire area emerged and was again mildly tilted. The subsequent post-Cimmerian transgression occurred largely during the Middle Jurassic. Consequently, the most important Cimmerian deformations appear to be of early and middle Triassic age.


ISSN: 0037-9409
EISSN: 1777-5817
Serial Title: Bulletin de la Societe Geologique de France
Serial Volume: 176
Serial Issue: 3
Title: Stratigraphic evidence for Cimmerian events in NW Caucasus (Russia)
Affiliation: Universita di Milano, Milan, Italy
Pages: 283-299
Published: 200505
Text Language: English
Summary Language: French
Publisher: Societe Geologique de France, Paris, France
References: 80
Accession Number: 2005-063635
Categories: StratigraphyStructural geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. strat. cols., 1 table, geol. sketch map
N41°00'00" - N44°00'00", E40°00'00" - E48°00'00"
N37°00'00" - N83°00'00", W170°00'00" - E28°00'00"
Secondary Affiliation: CNR, ITA, ItalyRussian Geological Survey, RUS, Russian FederationUniversita di Perugia, ITA, Italy
Country of Publication: France
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Abstract, Copyright, Societe Geologique de France. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200522
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