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研究区属于塔里木地台西南缘铁克里克断块.由于本区处于昆仑山北缘,其地势高峻挺拔.长城系出露齐全.高振家等(“新疆区域地层表”,1981)将该套地层划为震旦系塞拉加兹塔格群和寒武系;方锡廉、马士鹏等(1980)曾将该套地层自下而上划分为两个组(卡拉克尔组、布卡吐维组),均属晚前寒武系的一部分.但上述划分仅限于岩石地层学方面的研究.作者等(1981)经实地踏勘后,采集了微古植物样品,经分析鉴定,发现了丰富的微古植物,并用生物地层的方法对该套地层进行了初步研究.本文将系统地描述该套地层的微古植物及其组合特征,它对地层对比和生物进化的研究都具重要意义.
The study area belongs to the iron-clad block in the southwestern margin of the Tarim platform. Since the area is located in the northern margin of the Kunlun Mountains, the terrain is very tall and straight. The Great Wall System is fully exposed. Gao Zhenjia et al. (Xinjiang Regional Stratigraphic Table, 1981) Zoned for the Sinhalese Segazatzge group and the Cambrian; Fang Xilian, Ma Shipeng et al (1980) had set the formation from bottom to top, divided into two groups (Karakol group, Bukatuwei group) Are part of the late Precambrian Cambodian.But the above division is limited to the study of rock stratigraphy.After the field investigation, the author (1981) collected the samples of the micro-palea plants, after analysis and identification, found a wealth of micro-paleoenvironments , And a preliminary study on this set of strata has been carried out by means of biostratigraphy.This paper systematically describes the microfossils and their assemblage characteristics of this set of strata and is of great significance for the study of stratigraphic correlation and biological evolution.