|
|
Development characteristics and geological significance of the seismites of Chaochuan Formation in Yongkang Basin, Zhejiang Province |
ZENG Jianwei, CHEN Rong, CHU Pingli, LIAO Shengbin |
Nanjing Center of China Geological Survey, Nanjing 210016, China |
|
|
Abstract Some seismic records were found in marlstone interbeds, including grey and black lake facies marlstone, calcilutite, silt mudstone and siltstone in Chaochuan Formation at the northeastern part of Yongkang Basin. The seismites of varied autochthony are the seismic motion signs in the study area. Typical structures of the seismites included micro-fault, seismic fissure bed, liquefied breccia, liquefied vein, dish structures and liquefied convolute. Through the analysis of seismite and its sequence, and combined with the tectonic background of East Zhejiang, the authors supposed that the earthquake events in the middle and upper Chaochuan Formation could be related with the basin-controlling fault activity during the late period of Early Cretaceous. These represent the regional structural-sedimentary transformation from stable compensation deposition period to uplift-erosion period, and are of isochronous and important significance for the stratigraphic division of terrestrial facies basin.
|
Received: 29 March 2017
|
|
|
|
|
[1] 丁保良,蓝善先,汪迎平,等.浙闽赣地区非海相侏罗—白垩纪火山、沉积地层及生物群[M].南京:江苏科学技术出版社,1989:1-97. [2] 包超民.浙江中生代盆地成因类型划分及其形成机制分析[J].浙江地质,1994,10(1):55-66. [3] 丁保良,李耀西,汪迎平,等.浙江白垩系的深化研究与新进展[J].火山地质与矿产,1999,20(4):241-286. [4] 蔡正全,俞云文.浙江白垩系上部地层的划分与对比[J].地层学杂志,2001,25(4):259-266. [5] 汪迎平,丁保良,李耀西,等.论浙江东部早白垩世中期断陷事件和断陷岩套[J].江苏地质,2007,31(3):176-179. [6] 丁保良,李耀西,汪迎平,等.浙江白垩系综合地层学研究与进展[M].北京:地质出版社,2010:1-158. [7] 邢光福,杨祝良,陈大忠.1:250 000嵊县幅区域地质调查成果报告[R].南京:南京地质矿产研究所,2004. [8] 郭福生,严兆彬,杜杨松.混合沉积、混积岩和混积层系的讨论[J].地学前缘,2003,10(3):68. [9] 沙庆安.混合沉积和混积岩的讨论[J].古地理学报,2001,3(3):63-66. [10] 钱迈平,张宗言,马雪,等.中国东南部中生代含碳酸盐岩盆地沉积-岩浆作用与成矿[M].合肥:中国科学技术大学出版社,2015:46-66. [11] 曾剑威,陈荣,褚平利,等.浙江永康盆地朝川组泥灰岩段沉积特征及其古气候意义[J].资源调查与环境,2014,35(1):39-45. [12] 杜远生,韩欣.论震积作用和震积岩[J].地球科学进展,2000,15(4):389-394. [13] 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. [14] 乔秀夫,李海兵.沉积物的地震及古地震效应[J].古地理学报,2009,11(6):593-610. [15] 魏垂高,张世奇,姜在兴,等.东营凹陷现河地区沙三段震积岩特征及其意义[J].沉积学报,2006,24(6):798-805. [16] 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. [17] 吴贤涛,尹国勋.四川峨眉晚侏罗世湖泊沉积中震积岩的发现及其意义[J].沉积学报,1992,10(1):19-26. [18] 岳信东,林春明,李艳丽,等.二连盆地白音查干凹陷下白垩统震积岩的发现及其地质意义[J].高校地质学报,2009,15(1):57-62. |
[1] |
HU Bowen, LI Bin, LI Jianxin, WANG Yilin, LUO Qun. Discovery and significance on the seismite of Silurian Xiaoheba Formation in Baojing area of Northwestern Hunan[J]. , 2017, 4(4): 67-73. |
[2] |
CHEN Meitao, FAN Guoqiang, JIA Di, PAN Yingxing, KANG Xiao. Significance of Early Cretaceous index fossils from Risong villages of Tibet[J]. , 2016, 3(6): 32-36. |
|
|
|
|