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首页> 外文期刊>Open Journal of Geology >Biostratigraphic and Lithostratigraphic Study of Fahliyan Formation in Kuh-E-Siah (Arsenjan Area, North-East of Fars Province)
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Biostratigraphic and Lithostratigraphic Study of Fahliyan Formation in Kuh-E-Siah (Arsenjan Area, North-East of Fars Province)

机译：Kuh-E-Siah（法尔斯省东北部阿森让地区）Fahliyan组的生物地层学和岩石地层学研究

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摘要

Fahliyan Formation is importance in terms of Zagros stratigraphy since it is one of the oil reservoir rocks at the Jurassic-Cretaceous boundary. This rock unit consists of two types of deep and shallow facies in Zagros area. Recognition of bio-zones as well as discontinuity or continuity between the studied formation and the encompassed stratais taken into consideration. In order to study biostratigraphy on Fahliyan Formation, the stratigraphic section of Kuh-e-siah in the north-east of Fars Province was selected. In this section, Fahliyan Formation is measured 345 m consisting of thin to medium-bedded of limestone with the interbeds of sandy and dolomitic limestones. Fahliyan Formation conformably overlies Surmeh formation and underlies the marls of Gadvan formation. Vertical distribution of the identified foraminifers and calcareous algae confirms presence of 3 biozones in the sediments of Fahliyan Formation, as follows: 1) Calpionella alpina zone; 2) Pseudochrysalidina conica zone; 3) Pseudocyclammina lituus-Trocholina sp. assemblage zone. Based on Established biozones, the age of Fahliyan Formation in Kuh-e-Siah section was determined from Berriasian to Late Hauterivian.
机译：Fahliyan组对Zagros地层很重要，因为它是侏罗纪-白垩纪边界的储油岩之一。该岩石单元由Zagros地区的两种深层和浅层相组成。考虑到生物带的识别以及所研究地层与所含层状岩之间的不连续性或连续性。为了研究法赫里扬组的生物地层学，选择了Fars省东北部的Kuh-e-siah地层剖面。在此部分中，Fahliyan组的厚度为345 m，由薄至中层的石灰岩与砂质和白云质石灰岩夹层组成。 Fahliyan组一致地覆盖了Surmeh组，并覆盖了Gadvan组的泥灰岩。所确定的有孔虫和钙质藻类的垂直分布证实了Fahliyan组沉积物中存在3个生物区，如下：1）Calpionella alpina zone; 2）伪锥状圆锥形带; 3）假单胞菌lituus-Trocholina sp。组装区。根据已建立的生物区，确定了从Berriasian到Hauterivian晚期的Kuh-e-Siah剖面中Fahliyan组的年龄。

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