Burdigalian-Langhian foraminifera of the northwest High Zagros Thrust Belt, southwest Iran
نویسندگان
چکیده
Abstract The foraminiferal contents of the lower–middle Miocene succession exposed in three sections north Nur Abad on northwestern side High Zagros Thrust Belt were studied. Assemblages larger foraminifera from these can be referred to Zone SBZ 25 (and Miogypsina globulus and intermedia subzones), which correlates with Burdigalian Stage. For first time, planktonic documented area document Lang-hian deposits Zagros, upper 20 metres Sayl Cheshmeh section being characterised by occurrence such as Globigerina concinna (Reuss), diplostoma Globigerinoides obliquus (Bolli), Orbulina bilobata (d’Orbigny) O.universa (d’Orbigny). This association characterises suturalis Interval Zone.
منابع مشابه
Crustal scale geometry of the Zagros fold–thrust belt, Iran
Balanced cross-sections across the Zagros fold–thrust belt in Iran are used to analyze the geometry of deformation within the sedimentary cover rocks, and to test the hypothesis of basement involved thrusting throughout the fold–thrust belt. Although the Zagros deformation front is a relatively rectilinear feature, the sinuous map-view morphology of the mountain front is a result of a 6 km stru...
متن کاملIn-situ stress regime in the Asmari reservoir of the Zeloi and Lali oil fields, northwest of the Dezful embayment in Zagros fold-thrust belt, Iran
This paper analyzes in-situ stress field in the Asmari formation with in the complex structures of the Zeloi and Lali oilfields located in the Dezful embayment, SW Iran. The orientation of the maximum horizontal stress, SHmax is determined on the basis of compressive borehole breakouts and drilling-induced tensile fractures observed in eight oil wells, in which we focus on well-log based method...
متن کاملFirst record of Gyroconulina columellifera Schroeder & Darmoian, 1977 (larger benthic foraminifera) from the Maastrichtian Tarbur Formation of SW Iran (Zagros Fold-Thrust-Belt)
The larger benthic foraminifera Gyroconulina columellifera Schroeder & Darmoian, 1977 (type-locality: Maastrichtian Aqra Formation of Iraq) is described for the first time from two sections of the Maastrichtian Tarbur Formation of the Zagros Fold-Thrust-Belt, SW Iran. New details on its wall microstructure are provided. The microfacies is represented by bioclastic wacke-/pack-/grainstones with ...
متن کاملCollapse structures in Dowgonbadan region, Zagros fold- thrust belt
Allochthonous masses are common structures in Zagros fold-thrust belt. They are generally considered as collapse structures formed by the influence of gravity and in rock units with competency contrast. However, large allochthonous masses mapped in Dowgonbadan area in Dezful Embayment near the Mountain Front Fault (MFF) of Zagros show characteristics different from the belt common collapse stru...
متن کاملKinematics of the Dena Fault and Its Relation to Deep-Seated Transverse Faults in Zagros Fold-Thrust Belt, Iran
The NNW-trending Dena Fault, with 140 km length, cuts the major structures of Zagros Fold-Thrust Belt in Borujen region. The fault has divided the region in two zones, in which different structural, andmorphological features as well assedimentation and seismtectonic characteristics have developed. This study presents a new interpretation for the kinematics of Dena Fault based on field evidence....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geologos
سال: 2021
ISSN: ['1426-8981', '2080-6574']
DOI: https://doi.org/10.2478/logos-2021-0012