浅谈深水块体搬运复合体的结构、成因分类以及识别方法

秦磊, 毛金昕, 倪凤玲, 徐少华, 李小刚, 蔡长娥, 尚文亮, 刘家恺

A Brief Introduction to Deep-Water Mass-Transport Complexes: Structures, Genetic Classifications and Identification Methods

Lei Qin, Jinxin Mao, Fengling Ni, Shaohua Xu, Xiaogang Li, Change Cai, Wenliang Shang, Jiakai Liu

图3 MTCs的地震资料识别特征 (a)巴西东南部圣埃斯皮里图盆地MTCs三维地震平面图，MTCs以头部陡崖、体部滑塌褶皱和趾部挤压脊为特征[33]；(b)某典型峡谷水深及波列分布图，非对称的浊流波状底形向上游迁移[34]；(c)摩洛哥海域下古新统地震剖面，内部见保存完好的一个单独滑动块体[35]；(d)特立尼达海域上更新统MTCs地震剖面图，图中出现一些挤压逆冲，指示了MTCs内部的局部挤压，垂直比例放大约10倍[36]

Fig.3 The recognition characteristics of seismic data of MTCs (a)The three-dimensional seismic plan of MTCs in Espirito Santo Basin on the SE Brazilian margin, characterized by head cliffs, body folds, and toe squeeze ridges[33]; (b)Bathymetric image and cyclic steps along typical canyon, characterized by unsymmetrical turbidity wave bottom shape migrates upstream[34]; (c)The seismic profile of the Lower Paleozoic in the Moroccan waters, with a single well-preserved sliding block inside[35]; (d)Seismic profile across an uppermost Pleistocene MTCs, offshore Trinidad, several thrust slides are present, indicating local contraction within the MTCs, vertical exaggeration is about 10∶1[36]