Article
Engineering, Marine
Yiqing Wang, Yaohui Xu, Junping Huang, Jianglong Shi, Heng Zhao, Qingtao Wang, Qiang Meng
Summary: The study performed thermal simulation experiments on Nordic carbonates from the Ordovician Majiagou Formation to analyze the hydrocarbon production characteristics and geochemical characteristics. The results showed that the Nordic carbonates have different hydrocarbon production characteristics from the mud shale of the same parent material type, with a large amount of H2S production. The carbon isotope composition is controlled by thermal evolution, and the addition of calcium sulphate significantly affects the methane content but increases the yield of heavy hydrocarbon gases.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Geosciences, Multidisciplinary
Jingdong Liu, Tao Liu, Hua Liu, Lulu He, Lunju Zheng
Summary: This study found that gas, rather than oil, is the main factor controlling extreme overpressure in organic-rich shales. The higher pressures caused by hydrocarbon generation can lead to rock fracture, which expels oil and gas from the reservoir.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Abilimit Yiming, Xiujian Ding, Liangrong Qian, Hailei Liu, Maoguo Hou, Zhongfa Jiang
Summary: The Junggar Basin is a typical oil basin with a high potential for natural gas exploration. It has a proven ratio of natural gas and has developed effective reservoirs and thick caprocks in most areas. The research results and exploration practice show that the basin has a relatively large natural gas exploration potential.
APPLIED SCIENCES-BASEL
(2022)
Article
Geosciences, Multidisciplinary
Sandor Kormos, Reinhard F. Sachsenhofer, Achim Bechtel, Balazs Geza Radovics, Katalin Milota, Felix Schubert
Summary: The Eocene and Lower Oligocene rocks in the Hungarian Palaeogene Basin are identified as potential source rocks for crude oil accumulations. Specifically, the Kosd Formation and Tard Clay Formation are considered high-quality gas and oil-prone source rocks based on Rock-Eval data analysis from borehole samples. The molecular parameters of crude oil samples suggest a shaly source rock deposited in a marine/brackish environment, with organic matter mainly composed of aquatic biomass such as algae, dinoflagellates, and chemoautotrophic bacteria.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Yaoting Li, Shijia Chen, Haifeng Zhang, Li Feng
Summary: In recent years, there have been significant breakthroughs in exploring and developing tight oil in the Lower Triassic Yanchang Formation of the Ordos Basin. However, there is a lack of large-scale analysis of oil sources in this basin. This study used Rock-Eval pyrolysis and gas chromatography mass spectrometry to analyze source rocks and crude oil samples, and identified four types of oil sources in the region. The research also quantitatively calculated the contribution rates of source rocks to crude oil using chemometrics methods.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Energy & Fuels
Wen Zhao, Chengzao Jia, Lin Jiang, Tao Zhang, Minxia He, Fan Zhang, Zhenxue Jiang, Xiangfang Li, Keliu Wu
Summary: This study proposes a novel method to simulate the fluid charging and hydrocarbon accumulation processes in tight reservoirs. The results show that the presence of fractures is favorable for hydrocarbon charging into the reservoir rocks, but not for hydrocarbon accumulation.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Qianwen Guo, Shan Jiang, Jianwei Wang, Quanzhen Zhou, Yongliang Gao, Lin Ye, Jie Yin
Summary: The hydrocarbon source rocks in the Nanpu Sag were studied, and it was found that the Es-3 (2) section mainly consists of type II2, while the Es-3 (4) section mainly consists of type II1, with good organic matter type and high maturity. The multiple linear regression method is more effective than the ΔlgR method in predicting hydrocarbon source rocks in this area. The hydrocarbon source rocks in Es-3 (1) have generally low TOC and hydrocarbon potential, while the high value areas of TOC and hydrocarbon potential in Es-3 (4) are mainly concentrated in the Shichang sub depression.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Energy & Fuels
Wenxue Han, Xia Luo, Shizhen Tao, Chang Liu
Summary: This study investigates the source and sedimentation environment of the Pt-L and its impact on the geochemical characteristics of gases using saturated hydrocarbon gas chromatography, element, and carbon isotope analysis. The research finds that Pt-L has a mixed source of marine and terrestrial provenance, with a reducing sedimentary environment. Natural gas produced in the Pt-LDA is primarily coal-derived gas generated from the Carboniferous-Permian coal strata.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Ziyi Wang, Nengwu Zhou, Shuangfang Lu, Yancheng Liu, Liming Lin, Yang Liu, Bo Song
Summary: This study investigates the generation, accumulation, and distribution of tight sandstone gas in the Linxing-Shenfu gas fields in the northeastern margin of the Ordos Basin. It utilizes various approaches and data analysis to characterize different types of reservoirs and their formation mechanisms.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Gang Gao, Jianyu Zhao, Shangru Yang, Wenzhe Gang, Yuexia Dong, Zhongxin Zhao
Summary: Analysis of crude oil and shale samples in the Nanpu sag revealed the characteristics and origins of oil and gas, showing that heavy oil is a product of biodegradation and oxidation. Different types of crude oil sourced from different formations are distributed in various structural belts in the region. Discovery of natural gas primarily as dissolved gas in oil and free gas.
Article
Physics, Multidisciplinary
Qing Cao, Xinshan Wei, Zhangxing Chen, Jingzhou Zhao, Mingju Tang
Summary: The petrographic characteristics of fluid inclusions of the main gas-bearing intervals of the Upper Paleozoic in the Ordos Basin are analyzed to study the charging and enrichment of natural gas in low-permeability reservoirs. The abundance, attitude, and composition of gaseous hydrocarbon inclusions can reflect petroleum enrichment in low-permeability reservoirs, with natural gas accumulation mainly occurring during the Early Cretaceous.
FRONTIERS IN PHYSICS
(2022)
Article
Energy & Fuels
Li Guoxin, Zhang Bin, Wu Kunyu, Wu Songtao, Wang Xiaomei, Zhang Jing, Qi Xuening, Zhang Na, Xing Haoting, Xian Chenggang, Liu He
Summary: The geochemical analysis and experimental simulation were used to study the hydrocarbon generation material, organic matter enrichment and hydrocarbon generation model of Paleogene source rock in the Western Qaidam Depression, Qaidam Basin, NW China. Low TOC values of saline lacustrine source rock in the Qaidam Basin are due to poor nutrient supply, fast deposition rate, and high organic matter conversion efficiency. Hydrocarbon generation of saline lacustrine source rocks in the Qaidam Basin involves soluble and insoluble organic matter, with different generation processes and compound compositions.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2023)
Article
Energy & Fuels
Ji-Yuan Wang, Shao-Bin Guo
Summary: The relationship between hydrocarbon generation and the evolution of shale pore structure and its heterogeneity of continental shale was quantitatively studied in this research. The results show that hydrocarbon generation has different effects on pore heterogeneity of different scales, indicating the complexity of the relationship.
Article
Chemistry, Multidisciplinary
Xiao Hu, Xuecai Zhang, Jun Xie, Haifang Cao, Xugang Zheng, Zhengquan Zhao, Jianfeng Cao, Qiongyao Pu, Zhe Li, Liang Zhou
Summary: This study systematically investigates the sedimentary facies, distribution of source rocks, and their development in the Dongdaohaizi sag. The investigation results indicate that the fan delta facies primarily distribute in the northern margin of the sag and are the main source rocks. The quality of the source rocks is categorized as medium-to-good with a high resource potential.
Article
Geosciences, Multidisciplinary
Zhengjian Xu, Yang Wang, Shu Jiang, Chao Fang, Luofu Liu, Kangjun Wu, Yun Shu, Yanjun Feng, Xin Li, Can Deng
Summary: The Chang 9 shales in the Ordos Basin exhibit excellent source rock potential, with the deep lake shale showing the best potential. Through pyrolysis experiments, the hydrocarbon generation and expulsion characteristics of the shales have been analyzed, revealing peak expulsion periods for delta front shale, delta plain shale, and deep lake shale at 125-117 Ma, 127-100 Ma, and 125-100 Ma respectively.
GEOLOGICAL JOURNAL
(2021)
Article
Geosciences, Multidisciplinary
Liangliang Wang, Liming Dai, Wei Gong, Sanzhong Li, Xiaodian Jiang, Gillian Foulger, Hao Dong, Zhong-Hai Li, Shengyao Yu
Summary: This study investigates the subduction initiation mechanism during the soft docking stage of the Solomon Back-arc Basin. The results show that the mass depletion of the plateau influences the evolution of subduction patterns, and the rheological strength of the island arc affects the development of the shear zone between the island arc and back-arc basin. Combining geological evidence, it is suggested that the subduction initiation during the soft docking stage is jointly controlled by the rheological strength of the Solomon Island Arc and the collision of the Ontong-Java plateau.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Review
Geochemistry & Geophysics
Zhaoxia Jiang, Qingsong Liu, Andrew P. Roberts, Mark J. Dekkers, Vidal Barron, Jose Torrent, Sanzhong Li
Summary: Hematite is a common canted antiferromagnetic mineral with a reddish color. Its identification and quantification can be conveniently achieved through magnetic and color properties. Understanding hematite's characteristics and content is crucial for studies of the iron cycle, paleoenvironmental evolution, and research on Mars. However, previous research mainly focuses on stoichiometric hematite, neglecting the effects of cation substitution. Remagnetization is another complex problem associated with hematite. Recognizing the properties of cation-substituted hematite and understanding remagnetization mechanisms are important for identifying and interpreting the magnetic signals carried by hematite.
REVIEWS OF GEOPHYSICS
(2022)
Article
Geosciences, Multidisciplinary
Zhao Feiyu, Jiang Suhua, Li Sanzhong, Dai Mengxue, Wang Gang, David C. Nobes, Zhu Yixin
Summary: The article discusses the coupling mechanism of the Tianshan Orogenic Belt and the basins on its sides since the Late Mesozoic, as well as its influence on the origin of uranium mineralization. It summarizes four main tectonic movements and three metallogenic stages of uranium deposits in the region.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Yinbiao Peng, Shengyao Yu, Zhiqing Lai, Sanzhong Li, Yongjiang Liu, Chuanzhi Li, Lili Qi, Zhenzhu Jian
Summary: This study reports the discovery of eclogites within the Amdo microcontinent, and provides a detailed analysis of their metamorphic evolution. The eclogites show characteristics and geochemical features that suggest formation in a back-arc basin tectonic setting. Zircon U-Pb dating yields a metamorphic age of 190 Ma for the eclogites. The findings of this study reveal important information about the tectonic evolution of Central Tibet before the collision of the Qiangtang-Lhasa terrane.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Bochao Xu, M. Bayani Cardenas, Isaac R. Santos, William C. Burnett, Matthew A. Charette, Valenti Rodellas, Sanzhong Li, Ergang Lian, Zhigang Yu
Summary: Radium isotopes are important tools in oceanography and hydrology research. Current radium mass balance models often overlook the impact of particle scavenging on dissolved radium removal. We built a global ocean Ra-226 mass balance model and reevaluated the importance of particle scavenging. Our study found that particle scavenging is the major pathway for Ra-226 removal in the upper ocean.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Review
Geosciences, Multidisciplinary
Yuewei Hu, Jianli Zhang, Zhaoxia Jiang, Yuanjie Li, Sanzhong Li
Summary: Marine magnetic anomaly strips are important for plate tectonic studies, and the impact of complex oceanic crust structures and various layers on magnetic anomalies should be thoroughly studied.
GEOLOGICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Boran Liu, Yongjiang Liu, Sanzhong Li, Franz Neubauer, Chenyue Liang, Qingbin Guan
Summary: Archean gneiss domes are a common structure in old cratons and are distinct from the structural patterns in post-Archean belts. Two tectonic models, horizontal and vertical tectonism, exist in Archean tectonics. The formation mechanisms of Archean gneiss domes are still debated. This study examines the Anziling gneiss dome in the eastern North China Craton, which was formed dominantly by vertical tectonism during the Neoarchean. The dome is characterized by an irregular elliptical shape with a NE-ward extending tail on the surface and a deflective dome in the cross-section.
GEOLOGICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Ruixue Chen, Junjiang Zhu, Sanzhong Li, Shaoyu Zhang, Xingquan Chen, Qianqian Li, Pengcheng Wang, Jianli Zhang, Liming Dai, Yonggang Jia
Summary: Based on the collation and collection of a large number of data, we have constructed an induced earthquake database called QuakeQuake, which reports a total of 193 human-induced earthquake cases in China. By compiling Chinese literature, we revisit and re-arrange 155 human-induced earthquakes in China recorded in the global-induced earthquake database (HiQuake). The human-induced earthquakes in QuakeQuake database are classified into three levels of reliability, strong, moderate, and weak levels, based on both human-induced processes and seismic activity.
GEOLOGICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Jinping Liu, Sanzhong Li, Xianzhi Cao, Hao Dong, Yanhui Suo, Zhaoxia Jiang, Jie Zhou, Xiyao Li, Ruixin Zhang, Lijun Liu, Gillian Rose Foulger
Summary: Insight into the evolution of Philippine Sea-South China Sea (SCS) plate motions and their driving mechanisms are presented based on recent geological and seismic data. A new plate reconstruction model suggests a sinistral strike-slip fault at the western boundary of the Philippine Sea Plate with a clockwise self-rotation. The connection between the SCS and Shikoku Ridges possibly originated at 30 Ma, indicating an affinitive origin and magma source. Geodynamic simulations indicate that the seismic high-velocity body under the SCS is likely the leading edge of the Pacific Slab.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Peng Liu, Yonggang Liu, Sifan Gu, Paul Hoffman, Sanzhong Li
Summary: Ocean ventilation is a crucial factor in regulating atmospheric CO2 levels. The expansion of sea ice during glacial periods slows down ocean ventilation, with the greatest impact expected during the Neoproterozoic pre-snowball stage. Simulation results from our Community Earth System Model version 1.2.2 show that deep ocean ventilation age increases significantly as the climate cools and sea ice coverage reaches 50%. Further cooling and reduction in pCO(2) lead to a small increase in deep-ocean ventilation age, which can potentially reduce pCO(2) by 48 ppmv. This weakened ocean ventilation serves as a significant positive feedback to Late Neoproterozoic climate cooling.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Jie Liu, Sanzhong Li, Suhua Jiang, Xu Wang, Jianli Zhang
Summary: Edge detection techniques for potential field data are effective for identifying geological boundaries. However, there is a need for unified evaluation of different edge detection methods. This study examines and compares the boundary recognition capabilities of 28 edge detectors using gravity data. It also applies edge detection techniques to the Molucca Sea region to refine tectonic boundary division and identify deep boundaries associated with plate subduction.
SURVEYS IN GEOPHYSICS
(2023)
Article
Environmental Sciences
Shihua Zhong, Sanzhong Li, Yang Liu, Peter A. Cawood, Reimar Seltmann
Summary: Using machine learning, researchers analyzed the Jack Hills zircons and found that majority (around 70%) were sourced from igneous and sedimentary type granites, indicating the presence of rocks other than trondhjemite-tonalite-granodiorite suite in Earth's earliest continental crust.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Zhengyi Zhang, Dongdong Dong, Sanzhong Li, Xiujuan Wang, Guangxu Zhang, Jianke Fan, Cuilin Li
Summary: Based on geophysical observational data, this study reveals the volcanic sequences and seismic reflectors of the Caroline Ridge basement. The research shows that the construction model of the uppermost basement has undergone a transition from brittle deformation to ductile deformation, providing new insights into the early-stage crustal evolution of global oceanic plateaus.
GEOLOGICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Long Chen, Kaixin Feng, Jianghong Deng, Dongyong Li, Sanzhong Li, Ian Somerville
Summary: Compositional differences between continental and oceanic arc volcanic rocks have been investigated in this study. The results show that these rocks have significant disparities in major, trace element and Sr-Nd-Pb isotope compositions. It was found that the differences in mafic arc volcanic rocks can be attributed to the variations in source mixing between mantle wedge peridotite and slab-derived crustal components. Magma evolution processes, such as fractional crystallization, have a lesser impact on the lithochemical composition of the rocks.
GEOLOGICAL JOURNAL
(2023)
Article
Geochemistry & Geophysics
Long Chen, Dong-Yong Li, Jiang-Hong Deng, San-Zhong Li, Ian Somerville, Yi-Xiang Chen, Zi-Fu Zhao, Wei An, Xiao-Hui Li
Summary: Fe-Mg isotope data from mafic plutonic rocks and trench sediments in southern Tibet reveal negative correlations between d(26)Mg values and (Sr-87/Sr-86)(i) and (Pb-206/Pb-204)(i) values, but positive correlations with e(Nd)(t) and e(Hf)(t) values. Conversely, d(56)Fe values show positive correlations with (Sr-87/Sr-86)(i) and (Pb-206/Pb-204)(i) values, but negative correlations with e(Nd)(t) and e(Hf)(t) values. This suggests the importance of source mixing and source melting in the recycling of crustal materials in subduction zones.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
