Title of article :
Lithofacies, depositional environment, and sequence stratigraphy of the Lower Paleocene Pesteliegh Formation in the eastern Kopet Dagh Basin, Iran
Author/Authors :
Ramezani ، Shakiba Department of geology - Faculty of science - Ferdowsi University of Mashhad , Davtalab ، Elham Department of Geology - Faculty of Sciences - University of Neyshabur , Moussavi-Harami ، Reza Department of geology - Faculty of science - Ferdowsi University of Mashhad , Rahimi ، Behnam Department of geology - Faculty of science - Ferdowsi University of Mashhad , Mahboubi ، Asadollah Department of geology - Faculty of science - Ferdowsi University of Mashhad
From page :
341
To page :
359
Abstract :
The Pesteliegh Formation (Lower Paleocene) in the Chehelkaman and Tang-e Neyzar area, located in the eastern Kopet Dagh Basin, has been studied to investigate its lithological facies, sedimentary environment, and sequence stratigraphy. In this part of the Kopet Dagh Basin, the Pesteliegh Formation mainly composed of conglomerates, sandstone, mudstone and shales. Petrographic studies and sedimentary structures of the Pesteliegh Formation led to the identification of three lithofacies associations: conglomeratic (Gcm), sandy (Sl, Sr, Sh, St, Sp, Sm), mudstone (Fl, Fm), evaporitic facies, as well as five architectural elements (CH, LA, FF, CR, and CS). Petrological studies, sedimentary facies, architectural elements, and paleocurrent direction indicate deposition of these sediments in a meandering river system with a muddy and sandy bed, as well as floodplain and salina environments. Paleocurrent analysis also indicates a southeast to northwest flow direction which is consistent with sedimentological studies conducted on the studied sections. Sequence stratigraphy analysis of the Pesteliegh Formation indicates their deposition during a relative sea-level fall in the Lower Paleocene, comprising a depositional sequence and part of the subsequent sequence. Since the Pesteliegh Formation in the studied sections is located near the coastline, their sequence stratigraphy model follows the standard model and includes HST, LST, and TST facies associations.
Keywords :
Lithofacies , sequence stratigraphy , sedimentary environment , Pesteliegh Formation , Kopet Dagh
Journal title :
Geopersia
Journal title :
Geopersia
Record number :
2780285
Link To Document :
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