赣西北三都陆相红盆量化沉积学特征及其演化过程  

QUANTITATIVE SEDIMENTARY FEATURES AND EVOLUTION OF SANDU CONTINENTAL RED BASIN IN NORTHWEST JIANGXI

作　　者：章泽军[1] 张雄华[1] 潘良云[1] 

机构地区：[1]中国地质大学,石油部物探局地质所

出　　处：《江西地质》1997年第4期41-50,共10页Jiangxi Geology

摘　　要：通过定量提取砾石成分、大小、古流向等沉积学信息及首次采获的恐龙蛋化石，确定赣西北三都陆相红盆由三期八个冲积扇体叠置衔接而成，成生于晚白垩世末。根据对盆地组成要素，构造背景、古地形、古气候、物源区及动力条件等成生背景的综合分析，认为三都陆相盆地以先存北北东向断裂左型走滑拉分为先导，历经初始孕育期，强烈充填期。Through quantitatively extracting the sedimentological information concerned with gravel composition,gravel grain size,and ancient flow direction etc.and based on the dinosaurian egg fossil collected for the first fime, the authors believe that the Sandu continental red basin in northwest jiangxi was formed toward the end of Late Cretaceous by the superposition of eight alluvial fans of three stages. Based on a comprehensive analysis of compositional elements,tectonic background,palaeotopography,paleoclimate,provenance,dynamic conditions and other genetic settings ,it is suggested that following the sinistral strike_slip extension of the preexisting NNE_striking fault,the Sandu basin went through the initial induction period, the intensive infilling period, the dwindling and extinction period, and,after the termination of the pluvial event,it was subjected to a N_S oriented compression.

关 键 词：陆相红盆 冲积扇 量化沉积学 盆地 沉积 

分 类 号：P512.2[天文地球—地质学] P542.3