青海省曲麻莱地区巴颜喀拉山群浊积岩系识别的古遗迹学标志  

The Trace Fossil Identifying Symbol of Turbidite Sequence of Bayanhar Group,Southern Qinghai Province

作　　者：赵小明[1] 焦明路 牛志军[1] 

机构地区：[1]宜昌地质矿产研究所,湖北宜昌430074 [2]青海有色矿勘院,西宁810007

出　　处：《华南地质与矿产》2006年第3期48-54,共7页Geology and Mineral Resources of South China

基　　金：中国地质调查局基础地质调查项目"1/25万曲麻莱县幅区域地质调查"(200313000006)

摘　　要：青海南部曲麻莱-治多地区位于青藏高原东北部,广泛出露上三叠统巴颜喀拉山群砂板岩,地层厚度巨大,实体化石稀少,遗迹化石丰富。在1/25万区域地质调查过程中,我们收集了大量的基础资料,本文重点研究遗迹化石的保存状态、形态类型、生态习性及其在地层序列中的分布特征,结果表明:研究区内巴颜喀拉山群为半深海-深海环境下形成的浊积岩系,这与沉积学、岩石学的研究结果相一致。Qumarleb-Zhidoi area, a part of Southern Qinghai province, locates at the northeast of Qinghai-Tibet Plateau. The sandstone and slate of Bayanhar group are outcropped broadly in this area with great thickness, few body fossils and abundant trace fossils. In the 1/250000 regional geological investigation, we get a great deal of basic information. The result of the studies of preserved, morphology, ethnology of trace fossils and arranging on strata sequence indicate that the Upper Triassic Bayanhar group was formed in bathyal-abyssal turbidity environment. It accord with the research results of petrology and sedimentology.

关 键 词：浊积岩系 遗迹化石 巴颜喀拉山群 青海 

分 类 号：P534.51[天文地球—古生物学与地层学]