2021 Vol. 27, No. 6

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Characteristics and causes of coseismic surface rupture triggered by the "5.22" MS 7.4 Earthquake in Maduo, Qinghai, and their significance
GAI Hailong, YAO Shenghai, YANG Liping, KANG Taibo, YIN Xiang, CHEN Ting, LI Xin
2021, 27(6): 899-912. doi: 10.12090/j.issn.1006-6616.2021.27.06.073
Abstract (1608) HTML (556) PDF (70955KB)(178)
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An MS 7.4 earthquake occurred in Maduo County, Guoluo Tibetan Prefecture, Qinghai Province at 02:04 on May 22, 2021(Beijing time), which is the largest one in China after the 2008 Wenchuan MS 8.0 earthquake. Finding out the distribution and characteristics of its coseismic surface rupture in time is...
Late Cenozoic development characteristics and dynamic mechanism of the main faults in the Midu area, northwestern Yunnan[BP(]Development characteristics of the main faults of the late cenozoic in the Midu area, northwestern Yunnan, and their dynamic mechanism
HUANG Xiaolong, WU Zhonghai, WU Kungang
2021, 27(6): 913-927. doi: 10.12090/j.issn.1006-6616.2021.27.06.074
Abstract (1417) HTML (474) PDF (54214KB)(142)
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The Midu area is located at the southeast end of the northwestern Yunnan fault depression zone, the intersection of the Red River fault zone and the Chenghai fault. It is a key area for uncovering the formation mechanism of the Northwest Yunnan fault depression zone as well as its kinematic relation...
The gravity field and tectonic features in the southeast of the Anza Basin, Kenya
CHEN Qing, YUAN Bingqiang, HUANG Xiaoyu, LI Junmei, CHEN Hao, DING Chengyi, SUN Shuai, QIN Wen
2021, 27(6): 928-937. doi: 10.12090/j.issn.1006-6616.2021.27.06.075
Abstract (605) HTML (303) PDF (10076KB)(46)
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The southeast of the Anza Basin in Kenya, located in the East African Rift System, has developed a very thick Mesozoic and Cenozoic sedimentary cover. However, the low level of exploration in this area restricts us from understanding its structural system and evaluating its oil-gas exploration poten...
Application of seismic detection by spark source for concealed faults in Shanghai urban water network area
SONG Chunhua, SHI Gang, WU Hong, ZHANG Hao, YU Fei
2021, 27(6): 938-948. doi: 10.12090/j.issn.1006-6616.2021.27.06.076
Abstract (845) HTML (278) PDF (29474KB)(59)
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Nowadays artificial seismic exploration is recognized as one of the most effective means to detect hidden faults in urban areas. However, good seismic exploration data in highly urbanized areas is often unavailable limited by the excitation source and strong interference. In this paper, a seismic de...
DEM in quantitative analysis of structural geomorphology: application and prospect
CAO Pengju, CHENG Sanyou, LIN Haixing, WANG Xi, LI Manqi, CHEN Jing
2021, 27(6): 949-962. doi: 10.12090/j.issn.1006-6616.2021.27.06.077
Abstract (1892) HTML (263) PDF (2012KB)(207)
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Digital elevation model (DEM) is used to realize the digital simulation of terrain surface (i.e. the digital representation of terrain surface shape) through the limited terrain elevation data. As a new tool to describe the terrain, it provides a new field of vision for people to study the evolution...
Natural gas distribution and reservoir-forming law of the Yinggehai Basin, China
WU Xunda, LIAO Jin, SUN Wenzhao, LIU Ping, LI Chunlei
2021, 27(6): 963-974. doi: 10.12090/j.issn.1006-6616.2021.27.06.078
Abstract (1138) HTML (393) PDF (29350KB)(76)
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Oil-gas exploration in the Yinggehai basin shows, the formation, distribution and preservation of oil and gas resources are closely related to the overpressure system in the diapir zone. We based our analysis of the characteristics of generation, migration and reservior-forming of oil and gas resour...
A KronosFlow software-based preliminary study on the tectono-thermal evolution of thrust-nappe belt
LI Dan, CHANG Jian, LI Chenxing, YAO Tongyun, LIU Minzhu
2021, 27(6): 975-986. doi: 10.12090/j.issn.1006-6616.2021.27.06.079
Abstract (685) HTML (212) PDF (12760KB)(68)
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Basin modeling is an essential technical method for the exploration and assessment of petroleum basins. However, traditional 2D basin modeling technologies only apply to extensional basins. This makes the thermal history reconstruction in lateral direction of compressional basins an unsolved problem...
Application of audio magnetotelluric method in prospecting for deep hidden manganese ore: A case study in the Pujue manganese mine in Songtao, Guizhou, China
SHEN Xiaoqing, YANG Bingnan, HE Shuai, ZHANG Deshi
2021, 27(6): 987-997. doi: 10.12090/j.issn.1006-6616.2021.27.06.080
Abstract (610) HTML (108) PDF (14553KB)(48)
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The Pujue manganese deposit is a typical Datangpo-type sedimentary deposit of Nanhua period in eastern Guizhou. In the Pujue mining area the early-formed sedimentary manganese deposits were significantly influenced by the subsequent structures in aspects of burial and preservation. Analyzing the dee...
Assessment of seismic liquefaction hazard in Shanghai based on ground motion intensity and Standard Penetration Test
LI Xue, ZENG Yuyan, YU Fei, SHI Gang
2021, 27(6): 998-1010. doi: 10.12090/j.issn.1006-6616.2021.27.06.081
Abstract (783) HTML (337) PDF (17184KB)(64)
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Shanghai is located in the alluvial plain of the Yangtze River Delta, the merge area of the Huangpu River and Suzhou River. The unique geographical and sedimentary environment have formed the shallow sand layers in Shanghai. Due to the significant urbanization process in Shanghai, geological hazard ...
Late Quaternary depositional characteristics and environment significance of the Xibozhang section in Baoding, central Hebei Plain, China
LIU Zhirong, XUE Huaiyu, WANG Changsheng
2021, 27(6): 1011-1023. doi: 10.12090/j.issn.1006-6616.2021.27.06.082
Abstract (1214) HTML (273) PDF (35468KB)(88)
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This paper aims to ascertain the depositional paleoenvironment since the late Quaternary in the central Hebei plain. We measured the 20.74 m-deep Xibozhang section and analyzed the collected samples for grain size and optically stimulated luminescence (OSL) tests. OSL dating results indicate that th...
Provenance study on geochemical elements of detrital K-feldspar in Quaternary gravel layer in Yichang and its geological significance
LIN Xu, LIU Haijin, WU Zhonghai, LIU Weiming, ZHANG Yang, CHEN Jixin
2021, 27(6): 1024-1034. doi: 10.12090/j.issn.1006-6616.2021.27.06.083
Abstract (638) HTML (193) PDF (15674KB)(55)
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The Yichang area located at the exit of the Three Gorges is covered with a set of thick Quaternary gravel layers, recording the evolution of the paleoenvironment and the formation of the Yangtze River. However, there has been a great dispute over the time when the Yangtze River materials in the uppe...
Quaternary sedimentary sequence and sedimentary environment restoration in the Jinzhong Basin, Fenhe Rift Valley
QIN Bangce, FANG Weixuan, ZHANG Jianguo, JIA Runxing, XIAO Wenjin
2021, 27(6): 1035-1050. doi: 10.12090/j.issn.1006-6616.2021.27.06.084
Abstract (781) HTML (291) PDF (46288KB)(66)
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Jinzhong Basin is a Cenozoic intracontinental faulted sedimentary basin located in the middle of Fen-Wei graben system. Our study aims to identify the Quaternary sedimentary sequence and reveal the Quaternary sedimentary environmental evolution of the Jinzhong Basin. We used structural petrography t...
The age sequence of the detrital zircons from the Guanyindian section in Longde, the northeastern margin of the Tibetan Plateau, and its geological significance
KOU Linlin, LI Zhenhong, DONG Xiaopeng, CUI Jiawei, LI Hailong
2021, 27(6): 1051-1064. doi: 10.12090/j.issn.1006-6616.2021.27.06.085
Abstract (733) HTML (281) PDF (16990KB)(282)
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The precise age of the strata at the northeastern margin of the Tibetan Plateau in the Paleogene-Neogene, and the initial time when the uplift of the Plateau affected its northeastern margin, have always been two main bone contentions among geologists. The Guanyindian section at the northeastern mar...
Contents
2021, 27(6): 1065-1068.
Abstract (168) PDF (163KB)(42)
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Contents
2021, 27(6): 1069-1069.
Abstract (173) PDF (410KB)(25)
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Cover Page
2021, 27(6): 1070-1070.
Abstract (179) PDF (1440KB)(21)
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Inside Cover
2021, 27(6): 1071-1071.
Abstract (225) PDF (1585KB)(11)
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Inside Cover
2021, 27(6): 1072-1072.
Abstract (266) PDF (482KB)(17)
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