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. 2.. Characteristics of massive sandstone caused by deep-water gravity-flow in a lacustrine rift basin of the Dongying sag.
(a) Well Niu 110, 3010.92-3013.05 m, medium to fine massive sandstone caused by sandy debris flow, uniform in internal composition without obvious sedimentary structures or grain sequence variation; (b) Well Shi 100, 3073.78-3076.65 m, medium to coarse-grained massive sandstone caused by high-density turbidity current, with obviously internal stratified structures and grain sequence variation.
