干旱区生态环境知识资源中心(Arid): 甘肃皋兰白银靖远地区早白垩世沙漠沉积的特征及其古风带恢复

Arid

	甘肃皋兰白银靖远地区早白垩世沙漠沉积的特征及其古风带恢复
其他题名	Early Cretaceous desert and the reconstruction of palaeowind belts in Gaolan-Baiyin-Jingyuan area,Gansu Province
	伍皓; 崔晓庄; 熊国庆; 张予杰; 江新胜
来源期刊	地质通报
ISSN	1671-2552
出版年	2011
卷号	30 期号:7 页码:1077-1084
中文摘要	在前人对甘肃白银靖远地区早白垩世河口群(K1H)沙漠研究的基础上,对皋兰地区的河口群进行了沉积结构、构造和石英砂颗粒表面特征等综合对比分析,确认皋兰地区亦存在沙漠沉积。首次通过系统测量研究区风成沙丘的前积层的产状,对当时的古风向、古风带进行了恢复,结果表明,早白垩世晚期研究区盛行西风,与东部鄂尔多斯盆地早白垩世罗汉洞组(K1l)沙漠沉积风向记录完全一致。岩性特征与古风向的一致性表明,研究区与鄂尔多斯盆地均处于北半球西风带中,研究区可能为"古鄂尔多斯沙海"的一部分。
英文摘要	Based on previous researches on Early Cretaceous desert of Hekou Group(K1H)in Baiyin-Jingyuan area,the authors made a synthetic comparative analysis of sedimentary texture and structure as well as typical eolian grain surface texture of Hekou Group in Gaolan area,and reached the conclusion that there must also exist desert sediments in Gaolan area.Then,the palaeowind direction and palaeowind belt were reconstructed by systematical measurement of the dips of the eolian dune foresets in the study area.The results indicate that west winds were prevailing during late Early Cretaceous in the study area,being consistent with the palaeowind direction recorded in the Luohandong Formation(K1l)in Ordos basin.The consistency of the lithologic character and palaeowind direction recorded in K1H and K1l indicates that the study area and Ordos basin were then located within the same westerlies in the northern hemisphere and the study area might have been part of the Ordos palaeodesert sea.
中文关键词	皋兰白银靖远地区 ; 河口群 ; 古沙漠 ; 西风带 ; 古鄂尔多斯沙海
英文关键词	Gaolan-Baiyin-Jingyuan area Hekou Group(K1H) palaeodesert west trade wind belt Ordos palaeodesert sea
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:4251685
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226322
作者单位	中国地质调查局成都地质矿产研究所, 成都, 四川 610081, 中国
推荐引用方式 GB/T 7714	伍皓,崔晓庄,熊国庆,等. 甘肃皋兰白银靖远地区早白垩世沙漠沉积的特征及其古风带恢复[J],2011,30(7):1077-1084.
APA	伍皓,崔晓庄,熊国庆,张予杰,&江新胜.(2011).甘肃皋兰白银靖远地区早白垩世沙漠沉积的特征及其古风带恢复.地质通报,30(7),1077-1084.
MLA	伍皓,et al."甘肃皋兰白银靖远地区早白垩世沙漠沉积的特征及其古风带恢复".地质通报 30.7(2011):1077-1084.