【摘要】 羌塘盆地三叠系具有广泛的分布,地层类型复杂多样. 依据穿越 400 km的路线和剖面,自北向南对比了若拉岗日、冬布勒山、羌塘盆地的岩性和生物地层,发现了羌塘盆地北缘的三叠系. 对比结果表明:印支运动的影响仅限于羌塘盆地的北缘及中部地区;至晚三叠世诺利期,羌塘盆地整体仍在继续沉陷,形成广阔的海相沉积地层.更多还原

【Abstract】 Triassic strata distributes widely at Qiangtang basin in Qingzang plateau, and it is of various kinds and very complex. Through the detailed discussion of the lithstratigraphy and biostratigraphy of Ruolagangri and Dongbule mountain, northern Qiangtang basin, Xiyaergang zone (central uplift area) and southern Qiangtang basin from north to south., the new Triassic strata data have been obtained by the 400km-geology lines and sections, especially by the Triassic strata at the northern boundary of the basin. The conclusion is that Indosinian movement only affected the northern boundary and Xiyaergang zone of Qiangtang basin. The whole basin subsidences constantly and formed wide seafacies sedimentary series until the Norian and Rhaetian age of late Triassic.更多还原