Shallow carbonate deposits (Tarbur Formation) were formed in the Zagros foreland basin with dynamic tectonics during the Maastrichtian age. From the viewpoint of reconstruction of depositional conditions in these deposits, studies of biostratigraphy, microfacies, microtaphofacies, and sequence stratigraphy were performed in a single area at Tang-e Shabi Khoon, northwest of Zagros. Based on the identification of two assemblage zones consisting of benthic foraminifera in these strata, the formation was deposited during the middle to late Maastrichtian. The number of cycles in test size and type of coiling in Loftusia decreased from the study area toward the northwest of the Neotethys basin. The input of clastic sediments affected the distribution of Loftusia and rudists in the study area. Nine microfacies, six microtaphofacies, and one terrigenous facies (shale) were identified based on the sedimentary features. These deposits of the middle-late Maastrichtian were deposited on a homoclinal carbonate ramp. The platform can be divided into restricted and semi-restricted lagoon, shoal, and open marine environments. In the study area, the deposits of the Tarbur Formation were deposited during four third-order depositional sequences. Local fault activities affected the formation of depositional sequences in the study area.

中文翻译：

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伊朗西南部扎格罗斯前陆盆地塔布尔组（马斯特里赫特）的生物地层学和层序地层学

在马斯特里赫特时代，具有动力构造的扎格罗斯前陆盆地形成了浅层碳酸盐沉积物（Tarbur 组）。从重建这些矿床的沉积条件的角度来看，在扎格罗斯西北部的 Tang-e Shabi Khoon 的一个地区进行了生物地层学、微相、微泥相和层序地层学的研究。根据这些地层中由底栖有孔虫组成的两个组合带的识别，该地层沉积于马斯特里赫特中晚期。Loftusia的测试规模和卷取类型的循环次数从研究区域向新特提斯盆地西北部减少。碎屑沉积物的输入影响了洛夫图西亚的分布和研究区的路人。根据沉积特征，识别出9个微相、6个微泥相和1个陆源相（页岩）。这些马斯特里赫特中晚期的沉积物沉积在同斜碳酸盐斜坡上。该平台可分为限制性和半限制性泻湖、浅滩和开放海洋环境。在研究区，Tarbur 组沉积在四个三级沉积序列中。局部断裂活动影响了研究区沉积层序的形成。