黔东及邻区新元古代甲路组岩石地层对比及其古地理意义

通过黔东及邻区新元古代甲路沉积时期岩石地层的对比，反映出武陵造山运动所形成的古地貌对后期沉积环境具有明显控制作用。甲路组底部底砾岩建造组合特征反映，梵净山为山前泥石流-河流沉积，南东的湘西芷江地区属河流-滨岸相沉积，从江及桂北属河流-滨岸砂砾滩相沉积，可以确定梵净山地区为该时期古地貌高位区，其南东桂北-从江地区为古地貌低位区，并首先遭受海侵接受沉积充填；甲路组上部发育的一套钙质岩系在区域上有很好的可对比性，反映出该地区在武陵造山运动之后经历了沉积填平过程而使区域沉积环境相对一致，同时说明了该地区下江时期由于裂陷作用而出现的沉积分异是在该时期之后才加剧的。

The Neoproterozoic Jialu Formation in Eastern Guizhou and Adjacent Area: Rock Stratigraphic Correlation and Its Paleogeographic Significance

The obvious action from ancient landform from Wuling orogeny control the later sedimentary environment in the eastern Guizhou and adjacent area in Neoproterozoic  era. Basal conglomerate lithology features reflect on the bottom of Jialu Formation: Sedimentary facies is piedmont debris flow to river in the Fanjing mountain area,   river to shore in the Zhijiang area,  and river to shore gravel in northern Guangxi area and Congjiang county.It determines ancient landform is highland in the Fanjing mountain area in the same time,and is lowland in northern Guangxi area and Congjiang county where accepted sedimentary filling by transgression in the first time. Calcareous rock on the upper part  of Jialu Formation is ideal region for Comparison on  make region sedimentary environment relative consistency from process sedimentary to filling after Wuling orogeny,  indicating that sedimentary differentiation begin aggravating because of rifting in the period of Xiajiang in the same area after the period of Jialu.