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随着地质科学的不断深入发展,对轮藻化石的研究也愈来愈受到重视。国内一些地区或地层已陆续发现轮藻化石,并有专门报导。但是,轮藻化石个体极小,是一种微体化石,故在岩石薄片中极易被忽视或误认,曾经有人就误认是介壳碎片。基于此,掌握岩石薄片中轮藻化石及其碎片的鉴定特征是很有必要的。 现将近年来在川西中坝地区C_(22)井、川北阆中地区C_(45)井以及我队综合研究队陆相组在川中蓬莱镇地区B_(61)井、合川地区沥鼻峡剖面中的侏罗纪千佛崖、大安寨至马鞍山组的地层中,相继发现的轮藻化石,并结合轮藻化石在岩石薄片中的鉴定特征介绍如
With the continuous deepening of geological science, more attention has been paid to the study of charophytes. Some domestic areas or strata have been found Chara fossil, and a special report. However, the chalcanthal fossils are very small and are a type of microfossil. Therefore, it is easily overlooked or misidentified in the rock flake. Someone once mistook the shell fragment. Based on this, it is necessary to master the identification features of Chaetoceros fossils and their fragments in rock slices. In recent years, the C_ (22) well in the Zhongba area of western Sichuan, the C_ (45) well in the Langzhong area of northern Sichuan, and the continental facies of the comprehensive research team of our team have been identified in the Leprosy Gorge section in B_ (61) Jurassic Qianfoya, Daanzhai to Ma’anshan formation, have successively discovered the charophyte fossils, combined with the identification features of the charophyte fossils in the rock slices