贵州高原分散小型红色盆地堆积物的划分与对比

一、问题的提出自王长生（1975）报导了四川黔江正阳盆地红层中首次发现鸭嘴龙动物群以来,为一向归下第三系（东湖群）的红层,提出了归晚白垩世的有力证据。他还提出川、鄂、湘、黔交境附近的红盆堆积物应与正阳盆地相比,引起了地质工作者的注意。毛志中等（1979）在贵州盘县特区石脑公社所在的红层（原定上第三系）中发现了始新世脊椎动物化石,并将其与茅台群及全省习称的下第三系相比。同年,我队秦守荣同志在修文扎佐黑山水库主坝附近的红层中,发现了大量晚白垩世安陆孔轮藻植物化石等,为黔中地区红色盆地的地层时代提供了重要古生物依据。

STRATIGRAPHICAL DIVISION AND CORRELATION OF THE RED BEDS IN SMALL BASINS DISPERSED ON THE GUIZHOU PLATEAU

In the paper opinions of the stratigraphic division and correlation of the red beds in small basins dispersed on the Guizhou plateau are advanced on the basis of Late Cretaceous fossils such as Tyrannosaurus of Dinatontid and Porochara anluensis Z.Wang,P.gonganzhaiensis Z.Wang,Platychara sp. and Maedlerisphaera sp. of charophytes,in connection with the lithologic section and structural setting and by analogy with the strata of adjacent provinces（regions）. It is ascertained that all the red beds on the Guizhou plateau are of late Cretaceous age except those in southwestern Guizhou which are Paleogene in age. Thus it follows that the last phase of the Yanshanian movement still took place between the late Cretaceous and the Paleogene,but the red beds only occurred sparsely after the uplift of the entire plateau.