نتایج جستجو برای: carbonate ramp environment

تعداد نتایج: 547091  

Journal: :journal of sciences, islamic republic of iran 2011
m.j. hasani

a total of 12 species of marine gastropods, among which two taxa are new, is reported for the first time from the miocene deposits of khavich section, south of sirjan, kerman. gastropods assemblage in khavich area indicates deposition in shallow, warm ramp-type carbonate platform. the miocene and even oligocene gastropod assemblages, relatively similar to khavich section, reported from the othe...

Journal: :Minerals 2023

In the Cenomanian, southern passive margin of Neotethys Ocean was dominated by a giant carbonate factory. This succession is known as Sarvak Formation, significant reservoir in Iran. study focuses on detailed analysis facies variations and paleoenvironmental reconstruction, including interpretation platform types, during this time interval. Based field observations petrographical studies, 12 ha...

2013
Fahad Ali Muhammad Haneef Naveed Anjum Muhammad Hanif Suleman Khan

The depositional environment and sequence stratigraphy of the Samana Suk Formation (of CollovianBathonian age) based on field and petrographic data is presented. The formation is mainly composed of limestone with subordinate sandstone and marl. The limestone is medium to thick bedded and nodular at places with inter beds of sandstone and thin conglomerate intervals. The sandstone is reddish bro...

2017
Victoria Howarth Tiago M. Alves

Fluid flow features in carbonate platforms of the outer Browse Basin, Northwest Australia, are investigated using 3D seismic and borehole data. During the Cenozoic, the study area evolved from a carbonate ramp to a rimmed platform with isolated carbonate build-ups; as such it played a key role in focusing fluid on their buoyant flow to the surface. Statistical analyses of direct hydrocarbon ind...

M.J. Hasani

A total of 12 species of marine gastropods, among which two taxa are new, is reported for the first time from the Miocene deposits of Khavich section, south of Sirjan, Kerman. Gastropods assemblage in Khavich area indicates deposition in shallow, warm ramp-type carbonate platform. The Miocene and even Oligocene gastropod assemblages, relatively similar to Khavich section, reported from the othe...

Journal: :دیرینه شناسی 0
سمیرا باقرنژاد اسداله محبوبی محبوبی محمدحسین محمودی قرایی محمد خانه باد

tirgan formation with lower cretaceous age (barremian-aptian) in the kopet-dagh basin consists of carbonate and siliciclastic rocks (calcareous shale and sandstone) which conformably lay between siliciclastic rocks of shurijeh formation below, and marly sarcheshmeh formation at the top. in this study, tirgan formation in two stratigraphic sections of abgarm (77 m in thickness) and sirzar (46 m ...

Journal: :Geologos 2021

Abstract A transgression of the Tethys Ocean occurred in east central Iran, like other areas Ocean, around Yakhtashian/Bolorian (regional chronostratigraphical units corresponding with Artinskian/Kungurian Early Permian) transition. This led to development a carbonate platform that is represented Shirgesht area on northern part Tabas Block by Bagh-e-Vang Formation, which constitutes only known ...

2007
SARA B. PRUSS JONATHAN L. PAYNE DAVID J. BOTTJER

Outcrops of the Lower Triassic (Spathian) Virgin Limestone Member (Moenkopi Formation) in the southwestern United States contain the oldest known metazoan bioherms formed in the aftermath of the endPermian mass extinction. These small buildups, up to 1.0 m in diameter and 0.2 m high, were constructed by cementing bivalves. The bivalve bioherms accreted in a shallow, subtidal environment above s...

ژورنال: :پژوهش های دانش زمین 0
الهه ستاری دانشگاه اصفهان حسین وزیری مقدم دانشگاه اصفهان علی صیرفیان دانشگاه اصفهان عزیز الله طاهری دانشگاه صنعتی شاهرود

به منظور بررسی رخساره ها، محیط رسوبی و چینه نگاری سکانسی سازند آسماری در تنگ شیوی، یک برش چینه ای مورد مطالعه قرار گرفته است؛ که دارای ضخامت 348 متر بوده و به سن روپلین، شاتین و آکیتانین می باشد. با مطالعه 266 مقطع نازک تهیه شده، بر اساس تغییرات رخساره ای و خصوصیات بافتی و سنگ شناختی16 ریزرخساره ی متفاوت تشخیص داده شد که در چهار کمربند رخساره ای پهنه جزرومدی، لاگون، سد و دریای باز نهشته شده اند...

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