Tectonic and palaeogeographic implications of compositional variations within the siliciclastic Ab-Haji Formation (Lower Jurassic, east-central Iran)
作者: Mohammad Ali SalehiSeyed Reza Moussavi-HaramiAsadollah MahboubiMarkus WilmsenChristoph Heubeck
刊名: Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2014, Vol.271 (1), pp.21-48
来源数据库: Schweizerbart Journal
DOI: 10.1127/0077-7749/2014/0373
关键词: ab-haji formationeast-central iranextensional basingeochemistryprovenancesandstone petrography
英文摘要: The Lower Jurassic Ab-Haji Formation which is widespread across east-central Iran but best exposed on the Tabas Block consists of sandstones, siltstones and mudstones deposited in fluvio- deltaic and marginal marine settings. Provenance studies of this formation record the geodynamichistory of Central Iran during and in the aftermath of the main Cimmerian event (Triassic?Jurassic boundary to Liassic) and are crucial for the reconstruction of the tectonic setting and palaeogeogra- phy of this region. Sandstone provenance analysis of six selected outcrop sectionsusing modal analy- sis suggests that the predominantly quartzose and quartzolithic sandstones of the Ab-Haji Formation were largely derived from plutonic, quartzose sedimentary and low-grade metamorphic rocks, attrib- uted to a...
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关键词翻译
关键词翻译
  • Lower Jurassic 下侏罗纪
  • compositional 合成的
  • within 在以内
  • central 中心的