鄂尔多斯盆地南部渭北隆起发育时限及其演化

Journal of Lanzhou University(Natural Sciences)(2010)

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Abstract
通过对渭北隆起残存地层展布、沉积特征及构造变形等研究,结合磷灰石裂变径迹测试分析,认为渭北隆起后期经历了明显的改造,在早白垩世末以前应为鄂尔多斯盆地的一部分,总体以沉降接受沉积为主,此时隆起并未发育;而其整体作为正向构造单元应始于早白垩世末以来(约114~83 Ma),大致与鄂尔多斯盆地的消亡时间同步,且经历了早白垩世末—古新世的整体抬升剥蚀和始新世以来的断块翘倾剥蚀两大演化阶段.
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time of development,Weihe graben,apatite fission track,Weibei uplift
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