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浙西常山蒲塘口剖面上奥陶统沉积相特征
李文杰; 张元动; 陈吉涛; 袁文伟
2018
Source Publication地层学杂志
ISSN0253-4959
Volume042Issue:004Pages:393
Abstract浙江常山蒲塘口剖面由下至上出露上奥陶统砚瓦山组、黄泥岗组、三衢山组和长坞组,发育斜坡相碳酸盐岩和碎屑岩沉积,凯迪阶中含碎屑流沉积和以滑塌构造为主的软沉积物变形构造。砚瓦山组发育多期斜坡上部常见的中一远源碎屑流沉积、底流作用形成的含纹理条带状灰岩以及以钙质细砂岩为主的水下河道充填,出现大量原位软沉积物变形构造,包括火焰构造、小型泄水构造、沉积物挤入构造和塑性变形褶皱。黄泥岗组和三衢山组以含滑塌构造的深水相泥质灰岩为主,水体较砚瓦山组有所加深,至少有三期滑塌构造层。综合分析沉积岩相、软沉积物变形机制、大地构造背景,认为海底地形的坡度变陡和相对较高的沉积速率可能是砚瓦山组中大量软沉积物变形构造的触发机制,并且对其瘤状灰岩的形成也有一定的贡献。黄泥岗组、三衢山组中的滑塌构造可能与当时华夏古陆快速向北扩张、古地形逐渐变陡及地震作用有关。
Language英语
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/26234
Collection中国科学院南京地质古生物研究所
Affiliation中国科学院南京地质古生物研究所
First Author Affilication中国科学院南京地质古生物研究所
Recommended Citation
GB/T 7714
李文杰,张元动,陈吉涛,等. 浙西常山蒲塘口剖面上奥陶统沉积相特征[J]. 地层学杂志,2018,042(004):393.
APA 李文杰,张元动,陈吉涛,&袁文伟.(2018).浙西常山蒲塘口剖面上奥陶统沉积相特征.地层学杂志,042(004),393.
MLA 李文杰,et al."浙西常山蒲塘口剖面上奥陶统沉积相特征".地层学杂志 042.004(2018):393.
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