Article
Geosciences, Multidisciplinary
De-Chen Su, Ai-Ping Sun, Zhao-Li Li, Song-Yong Chen, Zhen-Jie Wu
Summary: The Nihewan Basin in north China is a rift basin known for its rich paleontological fossils and ancient human remains. Recent field surveys have revealed the presence of soft-sediment deformation structures (SSDS) in the basin, indicating strong and frequent tectonic activity. These structures can serve as important indicators for stratigraphic correlation.
JOURNAL OF PALAEOGEOGRAPHY-ENGLISH
(2022)
Article
Geosciences, Multidisciplinary
Chengqian Yu, Shaobin Guo, Jingchao Chai, Hairong Wang, He Li, Wen Jiang
Summary: This study identified the lithofacies and deformation structures of the Miocene deposits in the Luoyanshan area of the Qaidam Basin. The analysis reveals a strong correlation between the deformation mechanisms and driving forces, and the paleogeomorphological settings, providing a new perspective for interpreting sedimentary environments.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Zhen Chen, Wen Wang, Ping Huang, Yongjie Tang, Jing Wang, Qiang Zeng, Cong Chen
Summary: Tectonically induced liquefaction and resulting soft-sediment deformation structure (SSDS) in Huizhou Quaternary Basin is studied. The mottled clay in the basin is a mixture of aeolian yellow silt and underlying fluvial sand. Various deformed structures are observed in the mottled clay, indicating liquefaction-induced SSDS. The close spatial relationship between the mottled clay and regional faults suggests tectonic activity as the trigger. The SSDS of mottled clay could be a potential indicator of paleo-earthquakes in the coastal Quaternary basins of the northern South China Sea.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geology
Jiayi Meng, Zaixing Jiang, Yepeng Yang, Tao Nian
Summary: This study focuses on soft-sediment deformation structures (SSDSs) in the lacustrine Dongying Depression, a Paleogene synrift basin located in the southeastern corner of the Bohai Bay Basin, East China. The lower part of the upper 4th member of the Eocene Shahejie Formation (Es4(U)) exhibits nine lithofacies grouped into different facies associations, showing variations in sedimentary environments. The SSDSs observed in the lower Es4(U) are classified into seven categories and are mainly attributed to rift-related seismicity and sediment gravity flows.
SEDIMENTARY GEOLOGY
(2021)
Article
Geography, Physical
Bizhu He, Cunli Jiao, Zhihui Cai, Ruohan Liu, Joseph G. Meert, Xiaorui Yun, Tianyu Wang, Weiwei Chen, Zhuoying Yu, Jinchang Li, Shoutao Peng, Guangming Hao, Xianpu Guo, Xiufu Qiao
Summary: The study in the Tarim Basin identified various soft-sediment deformation structures (SSDS) and an unconformity, indicating that the basin was not a stable tectonic-sedimentary environment during the Ediacaran-Cambrian transition.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geochemistry & Geophysics
Uk Hwan Byun, A. J. (Tom) van Loon, Kyoungtae Ko
Summary: The Gyeokpori Formation in the Buan volcanic area contains siliciclastic rocks interbedded with volcanoclastics, characterized by soft-sediment deformation structures (SSDS) embedded in conglomerates and slump folds. Facies analysis showed that the SSDS are associated with the alternation of conglomerates and mud layers with clasts, promoting the formation of SSDS. The deformation style and morphology of SSDS differ, particularly in reworking by slump activity.
Article
Geology
Khalil Azennoud, Abdennasser Baali, Hicham El Asmi, Yassine Ait Brahim, Oualid Hakam, Aziz Hayati, Touria El Kamel
Summary: Reverse-drags in extensional settings are emblematic structures that may provide imprints of (neo)tectonic pulses, and even evidence of paleoseismic activity. This study investigates brittle and liquidization-induced soft-sediment deformation structures (SSDSs) in the late Pleistocene-Holocene fluvio-lacustrine beds of Lake Ifrah, northern Morocco. The results reveal that liquidization-induced SSDSs involve load structures and water-escape structures, while brittle deformations include shrinkage cracks, subsidiary grabens, and bed-parallel slip. The endogenic and exogenic triggers for deformation are deciphered through facies analysis and conventional trigger assessment.
SEDIMENTARY GEOLOGY
(2022)
Article
Geography, Physical
Lianji Liang, Xiufu Qiao, Fuchu Dai, Ning Zhong, Hanchao Jiang
Summary: Soft-sediment deformation structures (SSDSs) are widely developed in lacustrine sediments in tectonically active regions, containing valuable information on regional fault activity. This study identified multiple SSDSs in Late Pleistocene lacustrine sediments in northeastern Pamir, showing deformation mechanisms related to liquefaction, fluidization, and thixotropic behaviors. AMS radiocarbon dating data revealed formation periods of the SSDSs, indicating a possible relation to seismic activities and enhancing understanding of fault activity in the region.
QUATERNARY INTERNATIONAL
(2021)
Article
Environmental Sciences
Laura del Valle, Francesc Pomar, Joan J. Fornos, Bernadi Gelabert, Alida Timar-Gabor
Summary: The study of undeformed Middle to Late Pleistocene deposits in Es Codolar area reveals a complex stratigraphic architecture, characterized by aeolian, colluvial, and alluvial fan deposits and palaeosols. Various soft-sediment deformation structures provide insights into climatic evolution and syn- post-depositional processes in response to sea level changes and wetter environments during warmer episodes.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Ecology
Giancarlo Sidoti, Federica Antonelli, Giulia Galotta, Maria Cristina Moscatelli, Davor Krzisnik, Vittorio Vinciguerra, Swati Tamantini, Rosita Marabottini, Natalia Macro, Manuela Romagnoli
Summary: In this study, the mineral content in waterlogged archaeological wood (WAW) and its relationship with surrounding volcanic lake sediments were investigated. Calcium was found to be the most abundant element in all wood samples, with higher concentrations in heartwood. Arsenic was also present in both wood and sediment samples, indicating a possible connection to volcanic origin and biogeochemical processes.
Article
Geosciences, Multidisciplinary
Karim Kelfoun, Antonio Proano
Summary: Fine-grained pyroclastic deposits can be remobilized rapidly and generate hazardous, highly mobile flows when subjected to decompression following the passage of dilute pyroclastic density currents, according to analogue experiments and numerical simulations.
Article
Geosciences, Multidisciplinary
Leonard Brand, Sarah Maithel
Summary: The Permian Coconino Sandstone in northern Arizona contains numerous small-scale, soft-sediment deformation structures that may be indicators of paleoenvironment or sedimentary processes. These structures are generally shallow and occur on the surfaces of cross-beds, contrasting with other eolian sandstones that exhibit convoluted bedding up to tens of meters thick.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Environmental Sciences
Yuanxin Cao, Chunye Lin, Xuan Zhang
Summary: The study found that arsenic concentration in Lake Qinghai was higher than in the river water, and also higher in the soil than in the lake water, indicating the transfer of arsenic from dissolved phase to solid phase. Additionally, more calcium than arsenic precipitated in the lake water.
Article
Environmental Sciences
Brody Granger, Bernard Laval, Svein Vagle, Ellen L. Petticrew, Philip N. Owens, Susan A. Baldwin
Summary: In 2014, a tailings dam failure at Mount Polley Mine caused a large amount of mine waste to enter Quesnel Lake. The study found that suspended sediment concentrations remained elevated for several seasons postspill but gradually decreased, and it is predicted to return to pre-spill levels after approximately 7 years.
WATER RESOURCES RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Katharina A. Unger Moreno, Janis Thal, Wolfgang Bach, Christoph Beier, Karsten M. Haase
Summary: This study investigates the Vesteris Seamount located in the Central Greenland Basin, revealing a star-shaped seamount structure influenced by local stresses. Geochemical data of lava samples indicate a similar parental magma composition, while ROV footage shows pyroclastic and hyaloclastite deposits on the summit and upper flanks.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Julia Cisneros, Jim Best, Thaienne van Dijk, Renato Paes de Almeida, Mario Amsler, Justin Boldt, Bernardo Freitas, Cristiano Galeazzi, Richard Huizinga, Marco Ianniruberto, Hongbo Ma, Jeffrey A. Nittrouer, Kevin Oberg, Oscar Orfeo, Dan Parsons, Ricardo Szupiany, Ping Wang, Yuanfeng Zhang
Article
Geosciences, Multidisciplinary
N. R. Bristow, G. Blois, J. L. Best, K. T. Christensen
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2020)
Article
Engineering, Civil
Gianluca Blois, Nathaniel R. Bristow, Taehoon Kim, James L. Best, Kenneth T. Christensen
JOURNAL OF HYDRAULIC ENGINEERING
(2020)
Article
Environmental Sciences
Jingtao Wu, Andrew J. Margenot, Xiao Wei, Manman Fan, Huan Zhang, James L. Best, Pengbao Wu, Furong Chen, Chao Gao
JOURNAL OF SOILS AND SEDIMENTS
(2020)
Article
Geography, Physical
Stephen E. Darby, Peter G. Langdon, James L. Best, Julian Leyland, Christopher R. Hackney, Mackenzie Marti, Peter R. Morgan, Savuth Ben, Rolf Aalto, Daniel R. Parsons, Andrew P. Nicholas, Melanie J. Leng
QUATERNARY SCIENCE REVIEWS
(2020)
Article
Geology
Eric W. Prokocki, James L. Best, Philip J. Ashworth, Gregory H. Sambrook Smith, Andrew P. Nicholas, Daniel R. Parsons, Christopher J. Simpson
Article
Geology
Jeff Peakall, Jim Best, Jaco H. Baas, David M. Hodgson, Michael A. Clare, Peter J. Talling, Robert M. Dorrell, David R. Lee
Editorial Material
Geology
Jim Best, Julia Cisneros, Renato Paes de Almeida, Cristiano Galeazzi, Marco Ianniruberto, Hongbo Ma, Christopher Unsworth, Thaienne van Dijk
Article
Geology
Jaco H. Baas, Jim Best, Jeff Peakall
Summary: This study demonstrated how sediment gravity flows can transform from turbulent to quasi-laminar plug flow using the geometrical characteristics of a single climbing ripple. The rapid transformation in rheological character of the flow over a spatial scale of hundreds of meters to several kilometers was evidenced by the analysis of ripple size, angle of climb, grain size, internal erosional surfaces, and soft-sediment deformation. This study highlights how detailed examination of small-scale sedimentary structures can elucidate the character of flow transformation.
Article
Geology
Luxing Dou, Jim Best, Zhidong Bao, Jiagen Hou, Li Zhang, Yuming Liu
Summary: Experimental research has shown that the presence of clay in sediment-laden flows promotes transitional behavior between fully turbulent flow and quasi-laminar plug flow, but most fluid dynamic interpretations of lacustrine hyperpycnal flows are based on concepts of fully turbulent flows. The study describes and interprets subsurface mixed sandstone-mudstone bedforms from the Upper Cretaceous Heidimiao Sandstone in NE China, recognizing six lithofacies and five lithofacies associations formed under turbulent and transitional flows. Transitional flows in delta-fed shallow lacustrine hyperpycnal flow deposits exhibit gradual dilution and deceleration, eventually transforming to turbulent flows in distal regions.
SEDIMENTARY GEOLOGY
(2021)
Article
Environmental Sciences
Farzan Kazemifar, Gianluca Blois, Marcelo Aybar, Patricia Perez Calleja, Robert Nerenberg, Sumit Sinha, Richard J. Hardy, Jim Best, Gregory H. Sambrook Smith, Kenneth T. Christensen
Summary: Despite the growing knowledge on flow interactions at the interface of a turbulent flow over a permeable bed, little is known about the effects of biofilms on such flow. This study quantifies the impact of biofilms on flow over experimental permeable beds and finds that the presence of biofilms increases wall shear stress and friction velocity, but decreases after detachment. The results suggest that biofilms play a crucial role in modifying turbulence in aquatic environments and should not be neglected in flow and transport models over permeable media.
WATER RESOURCES RESEARCH
(2021)
Article
Acoustics
Mingwei Wang, Ziyin Wu, Jim Best, Fanlin Yang, Xiaohu Li, Dineng Zhao, Jieqiong Zhou
Summary: The study utilized multibeam backscatter strength and acoustic reflectance data to analyze the distribution of manganese nodules in a seamount region of the Western Pacific Ocean using siib-FCM technique, showing it is suitable for seabed substrate classification.
Review
Geosciences, Multidisciplinary
Susan W. Kieffer, Eckart Meiburg, Jim Best, Joanna Austin
Summary: The paper reviews the observations of surfaces eroded by pyroclastic density currents and proposes the concept of "groovy instability" as a potential cause of erosive counter-rotating vortices. It suggests that a transition from erosion of grooves to deposition of dunes occurred at Volcan Barcena due to changes in flow dynamics. Attention is called to the need for incorporating boundary layer dynamics into models of PDC dynamics.
BULLETIN OF VOLCANOLOGY
(2021)
Correction
Geosciences, Multidisciplinary
Susan W. Kieffer, Eckart Meiburg, Jim Best, Joanna Austin
BULLETIN OF VOLCANOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Weijiao Ma, Jinbu Li, Min Wang
Summary: The petroleum resource assessment obtained from laboratory tests on old core samples tends to underestimate the in situ resources. This study investigates the hydrocarbon loss and restoration by comparing preserved and exposed core samples. It is found that previous studies have severely underestimated the in situ hydrocarbon potential due to factors such as sample crushing and crucible waiting. A new restoration model is proposed to compensate for these losses.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Shaoyun Chen, Yongqiang Yang, Longwei Qiu, Xiaojuan Wang, Erejep Habilaxim
Summary: Quartz cement is an important authigenic mineral in the tight sandstones of the Shaximiao Formation in the Sichuan Basin. This study analyzed the silicon sources of the quartz cement using mineralogical, fluid inclusion, and geochemical data. The results showed that smectite alteration and dissolution of aluminosilicate minerals were the primary sources of silicon for quartz cementation. Contributions from volcanic material hydrolysis and pressure solution were relatively minor. The presence of chlorite films inhibited the development of quartz overgrowths and had minimal impact on reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xing Jian, Ping Guan, Ling Fu, Wei Zhang, Xiaotian Shen, Hanjing Fu, Ling Wang
Summary: This study presents a synthesis of new detrital zircon dating results and published data from the Cenozoic Qaidam basin, revealing the spatiotemporal variation of detrital zircon age populations and supporting models of synchronous deformation in northern Tibet. The study emphasizes the importance of considering textural and sedimentological parameters in zircon provenance interpretations, as well as the need for integrated provenance analysis involving other detritus components.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
A. Peketi, G. Sriram, A. Mazumdar, P. Dewangan, A. Zatale, V. Rajurkar, Gayatri Shirodkar, V. Mahale, V. Yatheesh
Summary: This study investigates 13 submarine seamounts in the southern Andaman volcanic arc and observes evidence of hydrothermal activity in one of the seamounts. The evidence includes plumes rich in dissolved gases, live chemosymbiotic organisms, and the deposition of neoforming minerals. These observations suggest the development of a new hydrothermal field in the least explored Andaman Sea.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Yanxian Zhu, Zhiliang He, Xiaowen Guo, Long Li, Sheng He, Jian Gao, Shuangjian Li, Huili Li
Summary: This study investigates the fluid evolution history of the hydrothermal dolomite reservoir in the Middle Permian Maokou Formation in the Sichuan Basin. The results reveal the diagenetic sequences, mineral origins, salinity history, and pressure evolution using various analytical techniques. The findings provide important insights into the gas charge, escape, and preservation conditions of the reservoir.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Rafaella de Carvalho Antunes, Julia Campos Guerrero, Ricardo Jorge Jahnert
Summary: This study presents a detailed sedimentary model and identifies various sedimentary facies associations in the coquina deposits of the Itapema Formation in the offshore pre-salt Buzios Field of the Santos Basin. These facies associations were primarily influenced by waves and currents and reflect a complex depositional system.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Kang Meng, Tongwei Zhang, Deyong Shao, Xiuyan Liu, Hui Song, Heng Peng
Summary: In this study, an integrated method of measuring optical reflectance and Raman spectroscopy is proposed to accurately determine the thermal maturity of Lower Cambrian shales in South China. The results show that this method is reliable and effective, and it has important implications for analyzing overmature shale.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Mohamed A. K. El-Ghali, Olga Shelukhina, Iftikhar Ahmed Abbasi, Mohamed S. H. Moustafa, Osman Salad Hersi, Numair A. Siddiqui, Khalid Al-Ramadan, Abdullah Alqubalee, Abdulwahab Muhammad Bello, Abduljamiu O. Amao
Summary: This study employs an integrated depositional and sequence stratigraphic approach to assess the control of diagenesis on reservoir porosity of a hybrid-energy delta system. The study focuses on the Barik Formation in the Haushi-Huqf region of Central Oman, which represents a highstand system tract of a hybrid-energy delta. The assessments reveal that the reservoir porosity is controlled by various degrees of diagenetic processes, including mechanically infiltrated clays and kaolinitization of silicate grains.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xiaocan Yu, Chunlian Wang, Hua Huang, Kai Yan
Summary: Oilfield brines are a significant alternative lithium resource. This study investigates the metallogenic characteristics and enrichment process of oilfield brines from the Jianghan Basin, central China using chemical and multi-isotope data. The results suggest that lithium enrichment in these brines is the result of interaction with clastic host rocks and dilution by meteoric water.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Jianghao Qiao, Xiwu Luan, Thanuja D. Raveendrasinghe, Yintao Lu, Guozhang Fan, Xinyuan Wei, Long Jin, Jian Yin, Haozhe Ma, Lushan Jiang
Summary: This study investigates the Tanintharyi passive continental margin in the Andaman Sea and reveals the potential of the Oligocene/Early Miocene carbonate platform in the region as a significant hydrocarbon reservoir. It also examines the influence of changes in sedimentary facies and the tectonic setting of the Andaman Sea on the evolution of pockmarks.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Anastasios Nikitas, Georgios Makrodimitras, Maria V. Triantaphyllou, Nikolaos Pasadakis, Kimon Christanis, Stavros Kalaitzidis, Grigoris Rousakis, Ioannis Panagiotopoulos, Alexandra Gogou, Alexandros Papadopoulos, Efthimios Tartaras, Aristofanis Stefatos
Summary: Due to the lack of deep wells in the broader region, studying mud volcanic deposits can improve the geological understanding of the Mediterranean Ridge. In this study, biostratigraphic and geochemical analyses were performed on mud breccia deposits from five Mud Volcanoes in the central MR. The results indicate the origin of these deposits and provide insights into the source rock potential. Seismic data is also used to determine the distribution of major lithostratigraphic formations.
MARINE AND PETROLEUM GEOLOGY
(2024)