The petrography and geochemistry of clastic rocks collected from two sections from the Baluti Formation northern Iraq, have been investigated to infer the depositional environment of the Late Triassic Baluti Formation. Petrographic study of the carbonate unit shows that they consist mainly of heterogeneous poorly sorted grainstones and packstones, ooids, intraclasts, peloids, bioclasts and green algae (Halimeda). The abundant and heterogeneous size of these constituents suggests a subtidal lagoon/oolitic shoal depositional environment with an open marine water circulation. Trace element concentrations of the shales and marlstones reveal a wide difference in the depositional environment. The paleoclimate proxies (C-value, Sr/Cu, Rb/Sr, Ga/Rb, and Sr/Ba ratios) and presence of illite suggest a hot and arid to semiarid climates during the deposition of the Buluti sediments, which coincide with the Late Triassic global warming. The combined use of the Cd/Mo and Co*Mn proxies indicate the deposition mainly in open marine settings on the continental margin associated with upwelling and subordinate restricted marine settings. Trace element redox proxies (V/(V + Ni), Th/U, V/Cr, Ni/Co, and V/Ni ratios indicates anoxic to dysoxic to marginally oxic marine conditions. This difference in paleoredox conditions is likely to arise from the variation in the hydrographic conditions of the depositional basin including water depth, upwelling oxidation degree in the water column and salinity.

已经研究了从伊拉克北部Baluti组两段收集的碎屑岩的岩石学和地球化学，以推断晚三叠世Baluti组的沉积环境。碳酸盐岩单元的岩相学研究表明，它们主要由异质分类不佳的花岗石和堆积岩，卵石，碎屑，倍体，生物碎屑和绿藻（Halimeda）组成。这些成分丰富多样，表明潮下泻湖/橄榄石浅滩沉积环境具有开放的海水循环。页岩和泥灰岩中痕量元素的浓度揭示了沉积环境的巨大差异。古气候代理（C值，Sr / Cu，Rb / Sr，Ga / Rb和Sr / Ba比）和伊利石的存在表明布卢蒂沉积物沉积过程中炎热干燥半干旱气候，这与三叠纪晚期全球变暖。Cd / Mo和Co * Mn代理的组合使用表明沉积主要发生在与上升流和下级受限海洋环境相关的大陆边缘的开放海洋环境中。痕量元素氧化还原比（V /（V + Ni），Th / U，V / Cr，Ni / Co和V / Ni的比率表示海洋条件为缺氧，低氧到边缘氧。这种古氧化还原条件的差异可能是由于沉积盆地水文条件的变化，包括水深，水柱上涌氧化度和盐度。