Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Title: 

FORAMINIFERAL-BASED BIOFACIES AND DEPOSITIONAL ENVIRONMENT OF THE ZIARAT FORMATION, NORTHWEST OF SHAHROOD

Type: PAPER
Author(s): SAJADI FERESHTEH,PARTOUAZAR H.,ALIMI N.
 
 
 
Name of Seminar: GEOLOGICAL CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  IRANIAN GEOLOGICAL SOCIETY
Date:  2005Volume 9
 
 
Abstract: 

Paleontological investigation of the Ziarat Formation in the Mojen Section has been done. The formation, northwest of Shahrood consists of limestone, sandy limestone, marl and gypsiferous marl with a thickness of about 51 meters. In the study section the Ziarat Formation is conformably overlain by the Karaj Formation and underlain by the Fajan Formation. Fifty nine rock samples collected and their microfossils (foraminifera) content is studied. A total of 42 species of foraminifera (distributed among 28 genera) recovered and treated systematicaly. Five informal biofacies are identified as follows: 1) Miliolidae- Rotalidae- bioclast; 2) Alveolina- Miliolidae-Orbitolites; 3) Alveolina-Nummulites; 4) Nummulites-bioclast; 5) Nummulitide-Discocyclinide. Based on these biofacies the sedimentary basin is a carbonate ramp. The stratigraphic position and index foraminifera reveal that just E1 (Ypresian) of Ziarat Formation is presented at the study section. Abundance of large size flosculinized Alveolina implies a warm humid climate during accumulation of the Ziarat Formation (Ypresian) in the study section area.

 
Keyword(s): 
 
Yearly Visit 65   tarjomyar
 
Latest on Blog
Enter SID Blog