|
|
|
| Discovery and significance on the seismite of Silurian Xiaoheba Formation in Baojing area of Northwestern Hunan |
| HU Bowen1, LI Bin1, LI Jianxin1, WANG Yilin1, LUO Qun2 |
1.Shenhua Geological Exploration Co.,Ltd., Beijing 102209, China;
2.China University of Petroleum(Beijing), Beijing 102249, China |
|
|
|
|
Abstract A set of sand-mud deposit was mainly developed in the Silurian Xiaoheba Formation in Baojing area of northwest Hunan Province. There are many typical seismite characteristics in some layers of Xiaoheba Formation, such as step micro-fault, pinch and swell structure, ball and pillow structure, load casts and flamy structure, liquefaction sandy dyke, liquefied fold, seismic fissure bed and autoclastic brecciated structure. Based on the vertical statistics of the seismite characteristics in well Baocan 1, Baocan 2 and Baocan 3, the authors identified 74 ancient seismic strata. According to the concept of seismic episode, the authors summarized the seismic episodes in Xiaoheba Formation. By transverse comparison of the seismic episodes in the wells, the authors found that the seismic episodes are mainly distributed in two members of Xiaoheba Formation. And then two active seismic periods and three seismic quiet periods during the Xiaoheba period have were identified. Through the relationship analysis of seismite characteristics, earthquake intensity and distance, combining with the tectonic setting of the study area, the authors found that the development of the seismites was controlled by the tectonic evolution of Baojing-Cili fault zone. The research results have important significance for the palaeostructure recovery, stratigraphic correlation and reservoir prediction.
|
|
Received: 05 July 2016
|
|
|
|
|
|
[1] Seilacher A.Fault-graded beds interpreted as seismites[J].Sedimentology,1969,13(1/2):155-159.
[2] 宋天锐.北京十三陵前寒武纪碳酸盐岩地层中的一套可能的地震-海啸序列[J].科学通报,1988,38(8):609-611.
[3] 乔秀夫,宋天锐,高林志,等.碳酸盐岩振动液化地震序列[J].地质学报,1994,68(1):16-34.
[4] 梁定益,聂泽同,万晓樵,等.试论震积岩及震积不整合——以川西、滇西地区为例[J].现代地质,1991,5(2):138-146.
[5] 梁定益,聂泽同,宋志敏.再论震积岩及震积不整合——以川西、滇西地区为例[J].地球科学:中国地质大学学报,1994,19(6):845-850.
[6] 杜远生.中国地震事件沉积研究的若干问题探讨[J].古地理学报,2011,13(6):581-590.
[7] 齐小兵,翟文建,章泽军.慈利—保靖断裂带的性质及其演化[J].地质科技情报,2009,28(2):54-58.
[8] 徐政语,林舸.中扬子地区显生宙构造演化及其对油气系统的影响[J].大地构造与成矿学,2001,25(1):1-8.
[9] 张晓阳,邹光均.湘西北大庸―古丈―吉首大断裂的新认识[J].中国地质调查,2015,2(1):1-8.
[10] 李斌,胡博文,石小虎,等.湘西地区志留纪沉积体系及典型前陆盆地的形成模式研究[J].地学前缘,2015,22(6):167-176.
[11] 路慎强.济阳坳陷古近系碎屑岩地层中震积岩识别标志研究[J].中国石油大学学报:自然科学版,2006,30(5):8-13.
[12] 杨玉芳,钟建华,王海侨,等.松辽盆地青山口组震积岩特征及油气地质意义[J].西南石油大学学报:自然科学版,2010,32(3):41-50.
[13] 杨剑萍,王海峰,聂玲玲,等.冀中坳陷晋县凹陷古近系震积岩的发现及地质意义[J].沉积学报,2014,32(4):634-642.
[14] Rossetti D F,Góes A M.Deciphering the sedimentological imprint of paleoseismic events:An example from the Aptian Codó Formation,northern Brazil[J].Sediment Geol,2000,135(1/4):137-156.
[15] 袁静,陈鑫,张善文.济阳坳陷古近系软沉积变形层中的砂岩脉特征[J].石油学报,2008,29(3):336-340,344.
[16] 田媛,钟建华,王书宝,等.鄂尔多斯盆地富县探区三叠系延长组震积岩及其地质意义[J].古地理学报,2015,17(4):541-552.
[17] 高红灿,郑荣才,陈发亮,等.东濮凹陷古近系沙河街组震积岩的认识及意义[J].古地理学报,2010,12(4):384-398.
[18] 田洪水,Van Loon A J,王华林,等.大盛群中的震积岩:郯庐断裂带强构造与地震活动新证据[J].中国科学:地球科学,2016,46(1):79-96.
[19] 王国栋,程日辉,王璞珺,等.松辽盆地青山口组震积岩的特征、成因及其构造-火山事件[J].岩石学报,2010,26(1):121-129.
[20] 乔秀夫,郭宪璞,叶留生,等.新疆塔中卡塔克隆起加里东构造运动的古地震证据[J].岩石学报,2011,27(1):242-252.
[21] 乔秀夫,宋天锐,高林志,等.地层中地震记录(古地震)[M].北京:地质出版社,2006.
[22] 龚正,李海兵,孙知明,等.阿尔金断裂带中侏罗世走滑活动及其断裂规模的探讨——来自软沉积物变形的证据[J].岩石学报,2013,29(6):2233-2250.
[23] Kuenen P H.I.Experiments in geology[J].Trans Geol Soc Glasgow,1958,23:1-28.
[24] 刘颖,谢君斐.砂土震动液化[M].北京:地震出版社,1984.
[25] 袁照令,李大明,易顺华.对保靖―慈利逆冲断裂带的一些认识[J].地质与勘探,2000,36(5):59-61. |
| [1] |
ZENG Jianwei, CHEN Rong, CHU Pingli, LIAO Shengbin. Development characteristics and geological significance of the seismites of Chaochuan Formation in Yongkang Basin, Zhejiang Province[J]. , 2017, 4(6): 33-39. |
| [2] |
LIANG Enyun, LIU Yaorong, ZOU Guangjun, WEI Fanghui, LIU Gengyin, XIONG Miao. Geochemical characteristics and tectonic setting of Silurian rocks in Zhangjiajie area[J]. , 2017, 4(6): 58-65. |
|
|
|
|
2017, Vol. 4 
