Deep-water gravity flow deposits in a lacustrine rift basin and their oil and gas geological significance in eastern China
CAO Yingchang1,*(
),JIN Jiehua1,LIU Haining1,2,YANG Tian3,LIU Keyu1,WANG Yanzhong1,WANG Jian1,LIANG Chao1
),JIN Jiehua1,LIU Haining1,2,YANG Tian3,LIU Keyu1,WANG Yanzhong1,WANG Jian1,LIANG Chao1
.
Fig. 7.. Distribution of sublacustrine fans in the El1 of WZ11-4N block of the Weixinan Sag.
(a) Plane distribution characteristics of sublacustrine fans; (b) WZ11-7-1, deep-water gravity-flow deposits of flood origin with carbonaceous laminae; (c) WZ11-7-1, inverse-normal grading sequence and climbing ripples bedding in deep-water gravity-flow deposits of flood origin; (d) WZ11-7-1, characteristics of deep-water gravity-flow hybrid event beds, H1—turbidity sediment below the hybrid event beds, H3—muddy debris flow sediments above the hybrid event beds.
