Petrology and sedimentary environments of the lacustrine carbonate rocks from the Miocene Wudaoliang Group in the Hoh Xil Basin, Qinghai

The lacustrine carbonate rocks occur on a wide range of scales in the Palaogene and Neogene strata in the Hoh Xil Basin, Qinghai, and constitute an important part of the Miocene Wudaoliang Group sediments.The lacustrine carbonate rocks in the Wudaoliang Group consist of boundstone (stromatolite), micritic limestone, grainstone and micritic dolostone which were laid down in the shallow-water to bathyal, high-salinity and enclosed to semi-enclosed lak e systems.