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西藏南部的海相下第三系,自1974年文世宣分为下部宗浦群及上部遮普惹组以后,一直沿用至今(表1)。宗浦群系穆恩之等(1973)命名,层型剖面在岗巴县城附近。宗浦群分Ⅰ—Ⅴ段,时代从古新世至始新世中期。遮普惹组原称遮普惹群,为中国珠穆朗玛峰登山队科考队(1962)命名,层型剖面在定日县贡扎村南约500米遮普惹山北坡(以下简称登山队剖面),剖面自下而上共分8层,下部(层1—6)以页岩为主夹灰岩,上部(层7.8)
The Lower Triassic in the southern part of Tibet, which has been in use ever since the solemn declaration of the Sect of the World in 1974 as the Lower Tsongpu Group and the Upper Punakai Group (Table 1). The Zongpu Group is named Muen et al. (1973), and the stratum profile is near Gamba County. Zongpu Group Ⅰ-Ⅴ section, the era from the Paleocene to middle Eocene. Formerly known as the Punjab group, the Punjab group named the Mount Everest Climbing Expedition Team (1962) of China, and the stratotype section is about 500 meters south of Punjara Mountain, south of Gongzha Village, Dingri County (hereinafter referred to as the Climbers Section), the section is divided into 8 layers from the bottom to the top, the shales are mainly composed of limestone in the bottom (layers 1-6), and the top (layer 7.8)