六盘山地区白垩纪沉积盆地层序地层及盆地演化动力学分析  

ANALYSIS OF STRATA AND BASIN EVOLUTION DYNAMICS OF CRETACEOUS SEDIMENTARY BASIN SEQUENCE IN LIUPAN MOUNTAINOUS AREA

作　　者：周玲琦 仲新 张有龙[2] 

机构地区：[1]甘肃省地矿局第三地勘院,甘肃兰州730050 [2]中国地震局兰州地震研究所,甘肃兰州730000

出　　处：《甘肃地质学报》2005年第2期43-52,共10页Acta Geologica Gansu

摘　　要：六盘山白垩纪盆地是六盘山内陆叠合盆地的一个单型盆地。形成了冲积扇—扇三角洲—滨浅湖泊、三角洲前缘—滨浅湖—中深湖、中深湖—浅湖沉积体系组合型式。充填序列划分为一个Ⅱ级及五个Ⅲ级构造层序,分别对应于初始裂陷、扩张裂陷—稳定坳陷、湖盆萎缩整体抬升3个演化阶段。Liupanshan Cretaceous basin is a mono - basin of Liupanshan inland overlapping basin. It formed such association types as alluvial fan - fan delta - shallow coastal lake, delta front - shallow coastal lake- semi - deep lake, semi- deep lake shallow lake sedimentary system. Filling sequences are divided one II class structural sequence, and five III class structural sequences, which belong to 3 evolution stages of initial depression, spreading depression stable depression, lake basin reducing accordingly.

关 键 词：六盘山地区 白垩纪盆地 层序 动力学分析 

分 类 号：P534.53[天文地球—古生物学与地层学]