نتایج جستجو برای: rupelian chattian

تعداد نتایج: 80  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده علوم پایه 1392

سازند آسماری قدیمی ترین سنگ مخزن کربناته نفتی جهان است که در سال 1908 میلادی کشف گردید. روش کلاسیک اکتشاف نفتی از لایه های آسماری در پی¬جوئی لایه¬های هیدروکربن¬دار در تاقدیس¬ها متمرکز می¬باشد. اما از سالیان اخیر امکان وجود تله¬های چینه نگاری در سازند آسماری مورد توجه بسیاری از زمین شناسان بوده است و لذا مطالعات متعددی در مورد ریز رخساره¬ها و محیط دیرینه و چینه نگاری توالی¬های این سازند انجام گر...

Journal: :Climate of The Past 2021

Abstract. Sea surface temperature (SST) reconstructions based on isoprenoid glycerol dialkyl tetraether (isoGDGT) distributions from the Eocene southwest (SW) Pacific Ocean are unequivocally warmer than can be reconciled with state-of-the-art fully coupled climate models. However, SST signal preserved in sedimentary archives affected by contributions of additional isoGDGT sources. Methods now e...

Journal: :Basin Research 2021

Abstract The early exhumation history of the Tauern Window in European Eastern Alps and its surface expression is poorly dated quantified, partly because thermochronological provenance information are sparse from Upper Austrian Northern Alpine Foreland Basin. For first time, we combine a single‐grain double‐dating approach (Apatite Fission Track U‐Pb dating) with trace‐element geochemistry anal...

Journal: :رخساره های رسوبی 0
رضوان دهقان امرالله صفری

the qom formation in ghohrud area, have been investigated in order to determine its biostratigraphy and palaeoecology. the thickness of qom formation is 325 meters at the study area and consists of thin, medium to thick bedded and massive limestons. they underline on eocene volcanic with disconformably and its upper boundary is overlain by alluvium. based on thin section studies 14 genera and 2...

Journal: :Bulletin De La Societe Geologique De France 2021

The Limagne Basin (Massif Central, France) originated during a major, European-scale, extensive event (European Cenozoic Rift System), which led to the formation of several rift systems in foreland Alps between Upper Eocene and Pliocene. A fluvio-lacustrine system emplaced basin resulted mixed carbonate-siliciclastic sedimentation microbial metazoan buildups occupy an important place. However, ...

Afshin Hashmie, Azam Zare

Objective: The Asmari Formation is characterised by alternation thick carbonate and marl sequence of the Oligocene- Miocene in the Zagros Basin, southwest of Iran that were deposited on the shelf of Eastern Paratethys. Methods: This formation is exposed at Tang-e-Khoshk in the Fars subcoastal zone with a thickness of 286 m comprising alternation of medium and thick to massive bedded carbonates,...

Afshin Hashmie, Azam Zare

Objective: The Asmari Formation is characterised by alternation thick carbonate and marl sequence of the Oligocene- Miocene in the Zagros Basin, southwest of Iran that were deposited on the shelf of Eastern Paratethys. Methods: This formation is exposed at Tang-e-Khoshk in the Fars subcoastal zone with a thickness of 286 m comprising alternation of medium and thick to massive bedded carbonates,...

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