Original scientific paper

https://doi.org/10.4154/gc.2021.01

Lithostratigraphy and Sedimentological Characteristics of the Calciturbidites of the Babadağ Formation-Tavas Nappe (SW Turkey)

Basiru Mohammed Kore ; Muğla Sıtkı Koçman University, Faculty of Engineering, Department of Geological Engineering, Muğla, Turkey
Murat Gül orcid.org/0000-0003-1555-6426 ; Muğla Sıtkı Koçman University, Faculty of Engineering, Department of Geological Engineering, Muğla, Turkey
Ceren Küçükuysal ; Muğla Sıtkı Koçman University, Faculty of Engineering, Department of Geological Engineering, Muğla, Turkey
Bilal Sari orcid.org/0000-0002-2389-2772 ; Dokuz Eylül University, Faculty of Engineering, Department of Geological Engineering, Buca-İzmir, Turkey;

Abstract

The Lycian Nappes contain slices of ophiolites and sedimentary rocks of various ages that crop
out in SW Turkey. They evolved and were emplaced under the effect of the Late CretaceousMiocene compressional regime. The Tavas Nappe is part of the Lycian Nappes and contains
Jurassic-Eocene sediments. The Babadağ Formation, forming the middle part of the Tavas
Nappe, is composed of limestone at the base and various sized calciturbidites with chert intercalations in the upper part. The Standard Microfacies Classification (SMF of FLÜGEL, 2004)
indicates that the entire unit was deposited mainly in a deep-shelf environment (Facies Zone –
FZ-2), deep-sea (FZ-1), toe of slope (FZ-3) and on the continental slope (FZ-4). Calcite and quartz
dominate the bulk mineralogy of the calciturbidites with higher SiO2 and CaO weight percentages than other major oxides. Additionally, the presence of Na2O, K2O, Al2O3, MgO, TiO2 and
Fe2O3 is associated with the local sediment input. Tectonism and sea level fluctuations were the
main triggering factors of the changes in the original depositional environment of the Babadağ
Formation. Additionally, grain size and the amount of sediment input control the calciturbidite
type and extension. Si enriched water circulation and Si and Ca substitution were responsible for the abundant chert formation during diagenesis of the units. Post depositional tectonic activities during transportation and emplacement of the nappes resulted in calcite filled cracks that cut both the calciturbidites and cherts. Study of the different nappe slices provides valuable information about syn- and post- depositional changes of the lithostratigraphic units.

Keywords

Facies Zone – Standard Microfacies (FZ – SMF, FLÜGEL, 2004); Deep-Sea; Lycian Nappes; Muğla-SW Turkey

Hrčak ID:

253471

URI

https://hrcak.srce.hr/253471

Publication date:

28.3.2021.

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