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1964年3—5月参加国家体委希夏邦马登山活动的地质工作者刘东生、王新平及王鸿宝等同志在该区采集了一些变质岩、花岗岩和伟晶岩的标本,对其中七个样品进行了 K-Ar 法年龄测定,所测标本简略的地质情况如下:1.希夏邦马峰区主要由一套亘厚的变质岩组成,考察队命名为希夏邦马群(刘东生,1964),按岩性本群可分为三部(熊洪德),最下部(1)为眼球状(硅线石)石榴石黑云母片麻岩,出露于5,800米基地附近,北倾20—30°。在希夏邦马峰东南聂拉木以南本层出露较广并向下过渡为条状混合片麻岩;沿聂拉木以南剖面所见本层露头最低高程为拔海3,200米。在希夏邦马峰北坡5,850米以上眼球状
From March to May 1964, geologists such as Liu Dongsheng, Wang Xinping and Wang Hongbao who took part in the Mt. Madhuban Mt. Shishapang of the State Physical Commission collected samples of metamorphic rocks, granites and pegmatites from seven samples K-Ar dating, the simple geology of the samples tested are as follows: 1. The Shishapangma peak area is mainly composed of a set of alternating metamorphic rocks, and the expedition team is named Xixia Bangrou (Liu Dongsheng, 1964). According to lithology, this group can be divided into three parts (Xiong Hongde). The lower part (1) is garnet-biotite gneiss with eyeball (sillimanite) exposed near 5,800 m base and tilted 20-30 ° northward. In the southeastern part of Nyxambonga, south of Nyalam, there is a wide and downward transition to stroma mixed gneiss. The lowest elevation of this layer is 3,200 meters above sea level as seen in the section south of Nyalam. 5,850 meters above the northern slope of Shishapangma peaked