论文部分内容阅读
鄂皖边界大别南缘主俯冲边界断层的存在以及扬子板块前陆盆地盖层大型薄皮构造，揭示扬子板块向大别造山带之下的Ａ型俯冲。纵向上构造类型的不同、板片的局部相楔及横向断层的存在，反映Ａ型俯冲的不均一性。Ａ型俯冲始自中三叠世末，延续到渐新世初，持续了约１８０Ｍａ，主构造期为中三叠世末。薄皮构造带前锋望江盆地是寻找油气的远景地区。
The existence of the main subduction boundary fault on the southern edge of the Dabie boundary in the border between Anhui Province and the large-scale thin-skinned structure of the caprock of the Yangtze plate in the Yangtze plate reveals the type A subduction of the Yangtze plate under the Dabie orogenic belt. The different types of vertical structures, the presence of local phase wedges and lateral faults in the plates reflect the inhomogeneity of Type A subduction. Type A subduction began at the end of Middle Triassic and extended to the beginning of Oligocene, lasting for about 180 Ma, with the main tectonic period being the middle Triassic. Thin-skinned striker Wangjiang Basin is looking for oil and gas prospects.