贵州金沙中侏罗统上、下沙溪庙组界线附近孢粉组合特征  

Characteristic of Sporo Pollen Assemblage Near the Upper and Lower Shaximiao Formation,Middle Jura in Guizhou

作　　者：杜昌乾[1] 王祁仑[1] 

机构地区：[1]贵州省地质矿产勘查开发局一○六地质大队,遵义563000

出　　处：《贵州地质》2009年第4期253-255,共3页Guizhou Geology

摘　　要：本文报导了贵州金沙中侏罗统下沙溪庙组顶部以Alisporites(阿里粉属)、Piceites(云杉粉属)为主的花粉孢子组合,计花粉10属15种、孢子2个属种,多数气囊发育,在风动力和水动力作用下,以其特有的丰度和特征组合埋藏在中侏世远岸深湖的沉积物中,其上覆的上沙溪庙组底部则发育以Cyathidites(桫椤孢属)为主的孢子花粉组合,大致与侏罗系南方区的第二个组合相当,即可与Cyathidites—Callialasporites—Neoraistrickia组合相对比,时代归属为中侏罗世。In this paper, the pollen spore association in the top lower Shaximiao formation, Middle Jura which mainly is Alisporites and Piceites is reported, totally 15 kinds and 10 genus, 2 kinds of spore, most is airbag development, under the process of wind power and water power, as its special abundance and characteristic, it was buried in the sediment of far shore and deep lake in Middle Jura. Development of the lower side of the above Upper Shaximiao formation mainly is the association of spore pollen, such as Cyathidites, similar to the second association of the south area, Jura, so it can compare with Cyathidites - Callialasporities - Neoraistr ickia association, the date belong to Middle Jura.

关 键 词：上 下沙溪庙组 孢粉组合 贵州金沙 

分 类 号：F534.52[经济管理—产业经济]