The Kashafrud Basin (NE Iran) during the Jurassic: A key for understanding the post-collisional history of the Iran Plate

侏罗纪时期的卡沙弗鲁德盆地（伊朗东北部）：了解伊朗板块碰撞后历史的关键

• 批准号: 5455475
• 负责人: Professor Dr. Franz Theodor Fürsich
• 金额: --
• 依托单位: Forschungsschwerpunkt Paläontologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5455475?language=en
• 关键词: Kashafrud; Basin; NE; Iran; during

The boundary between the Koppeh Dagh and the Binalud Mountains in northeastern Iran corresponds to the suture of the Palaeothethys, an ocean which, in the area of present-day Iran, had been completely subducted below the Turan Plate in the north towards the end of the Triassic. At this boundary between the Turan Plate as part of Eurasia and the Iran Plate as part of the so-called Cimmerian Microcontinent Collage, a strongly subsiding basin formed during the Middle Jurassic, which became infilled with a thick (up to 2,000 m) pile of sediments, ranging from fluvial to deep-marine turbidites (Kashafrud Formation). Aim of the study is the reconstruction of the depositional environments of the basin and of their temporal-spatial pattern based on integrated stratigraphic, sedimentological, ichnological and palaeoecological investigatons. Combined with a provenance and subsidence analysis these integrated data will elucidate the origin, type, evolution, and geodynamic context of the Kashafrud Basin. The expected results will significantly enhance our understanding of the complex geological events that affected the Iran Plate after its collision with Eurasia.

伊朗东北部的Koppeh Dagh和Binalud山脉之间的边界对应于Palaeothethys的缝合线，在今天的伊朗地区，这是一个海洋，在三叠纪末期完全俯冲到北部的图兰板块之下。在欧亚大陆的图兰板块和伊朗板块之间的边界上，作为所谓的辛梅里安微大陆拼贴的一部分，在中侏罗世期间形成了一个强烈沉降的盆地，其中充满了厚（高达2,000米）的沉积物堆，从河流到深海浊积岩（Kashafrud组）。通过综合地层学、沉积学、遗迹学和古生态学等方面的研究，恢复了盆地的沉积环境及其时空格局。结合物源和沉降分析，这些综合数据将阐明Kashafrud盆地的起源、类型、演化和地球动力学背景。预期的结果将大大提高我们对伊朗板块与欧亚大陆碰撞后影响伊朗板块的复杂地质事件的理解。