珠穆朗玛峰地区侏罗纪沉积环境
JURASSIC SED IMENTARY ENVIRONMENT IN THE QOMOLANGMA REGION
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摘要: 珠峰地区(指北喜马拉雅断裂以南的吉隆~岗巴一带。该地区侏罗纪地层分布广泛,发育也较完全,其中以聂拉木县古错剖面出露最好。笔者认为,侏罗纪时珠峰地区属与印度板块毗连的被动大陆边缘(冒地槽)环境。地层层序较完全,沉积类型多样,厚度大,相变快,反映了当时板块扩张作用的影响,并造成了当时该区构造运动比较活跃的沉积作用背景。Abstract: The Qomolangma region covers the area from Jirong to Gamba in the south of the Himalayan fauit. The welldeveloped Jurassic strata in this area are com-pietely exposed.and their total thickness is 4500m.This region belonged to a passive continental margin environment adjacent to Indian Plate during the Ju-rassic period, with active depositional setting,variedtypes,great thickness and rapid facies change.
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