摘要
二连盆地白音查干凹陷为白垩系陆相断陷盆地。受构造沉降的控制,凹陷北部为陡坡,南部为缓坡,整体表现为北断南超格局;在巴彦花群沉积时期,共发育冲积扇、三角洲、滨浅湖、深湖半深湖等沉积相;本文重点讨论了扇三角洲和辫状河三角洲的沉积特征、识别标志;在凹陷演化的主体阶段下白垩统巴彦花群沉积期,凹陷北部陡坡带发育扇三角洲沉积,南部缓坡带发育辫状河三角洲沉积。
Located in Erlian basin, Baiyinchagan is a depression with faults in the north and overlap in the south. Six types of sedi- mentary facies, such as fan and delta facies, have been recognized. In this paper, sedimentary characteristics and recognition symbols of fan delta and braided delta are emphatically studied. The type of conglomerate is regarded as an important symbol for distinguishing fan delta from braided delta. Alluvial fans and fan delta are found on the steep slope in the north of the depression, while braid river delta and turbidite fans are found on the gentle slope in the south.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2005年第6期553-556,共4页
Acta Geoscientica Sinica
基金
中国石化总公司"九五"科技攻关项目(编号:P00015)资助。
作者简介
张福顺，男，1968年生，高级工程师，博士，主要从事层序地层与沉积储层研究；E—mail：zhangfs@pepris．com。
