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哈尔扎位于青海茫崖镇（旧址）西南45公里处。属于东昆仑西段祁漫塔格山北麓的低山区。1955年,张文堂等在哈尔扎沟口附近的灰绿色碎屑岩灰岩中,首次采获腕足化石:Cyrtospirifer sp.,Productella sp.及三叶虫:Proetus sP.确定为晚泥盆世。1959年,朱夏将上述地层称之为哈尔扎群。1958年,西北地质局石油普查大队在哈尔扎沟口剖面的中部采得腕足:Cyrtospirifer sinensis(Gra bau),植物:Leptophloeum rhombicumDawson。1969—1970年,青海地质局第一区调队在哈尔扎东侧山脊于相当层位中采到腕足:Cyrtospirifer sinensic(Grabau),C,chaoi(Grabau),Tenticospirifersp.及瓣鳃。
Haarzha is located in the town of Mangya (site) 45 km southwest of Qinghai. Belongs to the western Kunlun Mountains in the northern foot of Qiman Tagus low mountain. In 1955, Zhang Wen-tang et al. First collected the brachiopod fossils: Cyrtospirifer sp., Productella sp. And Trilobite: Proetus spp. In the Devonian limestone near Halza Gully. In 1959, Zhu Xia described the above strata as the Halza group. In 1958, the Northwest Bureau of Geology Petroleum census brigade harvested Brachs foot in the central section of the Haarzai Mizoguchi: Cyrtospirifer sinensis (Gra bau), plant: Leptophloeum rhombicum Dawson. From 1969 to 1970, the first team of the Qinghai Bureau of Geological Survey picked up the brachii of Cyrtospirifer sinensic (Grabau), C, chai (Grabau), Tenticospirifersp.