Article
Geosciences, Multidisciplinary
Yin Lu, Jasper Moernaut, Revital Bookman, Nicolas Waldmann, Nadav Wetzler, Amotz Agnon, Shmuel Marco, G. Ian Alsop, Michael Strasser, Aurelia Hubert-Ferrari
Summary: This study discusses a new method to determine the seismic origin of prehistoric turbidites by analyzing in situ deformations. It suggests that observing the underlying in situ deformations can validate the seismic origin of turbidites.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Jose F. Cabrera-Ortiz, Javier Dorador, Francisco J. Rodriguez-Tova
Summary: This study presents a detailed ichnological and sedimentological integration analysis of Miocene muddy turbiditic deposits from the westernmost Mediterranean. The findings reveal variations in depositional conditions within the turbiditic system, with generalized low energy conditions in the lower part and higher energy conditions in the upper part.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yintao Huang, Xianfeng Tan, Entao Liu, Jia Wang, Jianpeng Wang
Summary: The study of the shallow-marine turbidite fans in the northwestern South China Sea provides insight into sedimentary processes, identifying various depositional elements and highlighting the impact of sea-level fluctuations on gravity-flow energy and sediment input.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geology
Michael L. Sweet, Gwladys T. Gaillot, Tammy M. Rittenour, Kathrine Love, Michael D. Blum
Summary: High-resolution seismic, core, and chronological data from offshore Corsica, France reveal new insights into rates of submarine fan growth. The study found that during Late Pleistocene glacial periods, deposition rates were higher due to low sea levels and exposed shelves, while post-glacial periods with higher sea levels and submerged shelves had lower deposition rates.
Article
Geology
Piotr Strzebonski
Summary: This study presents sedimentological analysis and classification of Santonian-Campanian siliciclastic deposits in the Western Flysch Carpathians, based on natural outcrops. The study identifies gravity-driven sediment redeposition processes, such as submarine slumps, debris flows, and turbidity currents, as the main contributors to the formation of these deposits. The innovative linking of descriptive features and critical determinants of specific sediment gravity-flow processes contributes significantly to the research field.
ANNALES SOCIETATIS GEOLOGORUM POLONIAE
(2022)
Review
Engineering, Marine
Arif Hussain, Khalid Al-Ramadan
Summary: The burial of organic matter in deep-sea fan sediments is an important process in the carbon cycle. Current research predominantly focuses on mudstones, but recent evidence suggests that coarse-grained sediment gravity flow deposits can also store significant amounts of organic carbon. The impact of different depositional processes on organic matter distribution, burial, and preservation in deep-marine deposits is not fully understood.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geology
Thomas J. H. Dodd, Dave J. McCarthy, Lawrence Amy, Gayle E. Plenderleith, Stuart M. Clarke
Summary: This study provides insights into the formation and characteristics of deep-lacustrine hybrid event beds, as well as their implications in the prediction of such deposits in ancient deep-lacustrine fan settings.
Article
Geology
Andrea Fildani, Svetlana Kostic, Jacob A. Covault, Katherine L. Maier, David W. Caress, Charles K. Paull
Summary: Research on the depositional record of submarine fans and related turbidite systems has revealed the importance of architectural elements like channels, lobes, and levees. The study focuses on the La Jolla Canyon in offshore southern California, using high-resolution data to explore the characteristics of bedforms formed by supercritical turbidity currents. The findings provide valuable insights into sedimentary processes important for submarine fan growth in sedimentary basins.
Article
Geosciences, Multidisciplinary
Arif Hussain, Emma A. Morris, Khalid Al -Ramadan, Patrick M. Shannon, Peter D. W. Haughton
Summary: This study compares ancient greywackes and hybrid event beds (HEBs) to investigate the origin of the matrix component. The analysis finds that many ancient greywackes exhibit similar bed structures to HEBs, and both types of rocks often have high matrix contents (>15%). The findings propose a revised interpretation of ancient deep-water greywackes as HEBs with significant original detrital matrix.
EARTH-SCIENCE REVIEWS
(2023)
Article
Oceanography
Mohamad Hassan, Sara Teixeira, Carole Decker, Sandra Fuchs, Olivier Mouchel, Karine Olu, Sophie Arnaud-Haond
Summary: Chemosynthetic ecosystems in the deep ocean have limited knowledge on connectivity and dispersal. This study focused on the genetic analysis of a deep-sea species, Christineconcha regab, and found genetic differentiation along depth gradients and regional scale gene flow.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2023)
Article
Geosciences, Multidisciplinary
Amar Karaoui, Christoph Breitkreuz, Brahim Karaoui, Zakarya Yajioui, Abdelkader Mahmoudi
Summary: A multidisciplinary study was conducted on the Early Ediacaran Skoura Turbidites in the Skoura inlier, Central High Atlas, utilizing lithostratigraphy, petrography, modal composition, and geochemistry. The research identified twelve lithofacies types in shallow delta complex, submarine channel, and deep-sea fan depositional environments, suggesting a basin depth changes related to convergence onset. Petrographic and modal analyses revealed greywacke and lith-arenite lithologies with similar clast composition, indicating derivation from active arc setting. Geochemical data showed characteristics of a recycled orogen, with similarities to other Early Ediacaran sediments in the Saghro Group. This suggests deposition in an orogenic basin in a back-arc setting during the Early Ediacaran period.
JOURNAL OF AFRICAN EARTH SCIENCES
(2022)
Review
Environmental Sciences
Eva Paulus
Summary: The deep sea is one of the most biodiverse habitats on Earth, but is facing threats from human activities. Despite many mysteries remaining, there are challenges such as overfishing and environmental degradation that must be addressed to protect biodiversity in the deep sea.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Bo Yang, Hongjun Qu, Jianchao Shi, Yuqi Bai, Wenhou Li, Yanrong Zheng, Rongjun Zhang
Summary: The Chang 7 interval in the Ordos Basin represents a typical deep lacustrine depositional sequence, with sediments mainly coming from the northeast and forming multiple sublacustrine fans. The deposition includes sand debris flow, turbidity current, and deep-water mudstone deposits.
Article
Geochemistry & Geophysics
Shereef Bankole, Dorrik Stow, Zeinab Smillie, Jim Buckman, Helen Lever
Summary: Distinguishing between deep-water sedimentary facies has been challenging due to the complex associations in deep water and the lack of definite sedimentological features between hemipelagites and contourites. This study used various techniques to analyze the deep-water microstructure, revealing that grain size is influenced by current velocity and carrying capacity for contourites and turbidites, while natural heterogeneity caused by bioturbation impacts hemipelagite grain size. Different patterns were observed among the sedimentary facies, with turbidites generally bedding parallel, contourites random to semi-random, and hemipelagites random to oblique.
Article
Geology
Pengfei Di, Xiaoqiang Yang, Harunur Rashid, Yang Zhou, Hongbin Wang, Niu Li, Duofu Chen
Summary: Microbial sulfate reduction in turbidites of the South China Sea is influenced by terrestrial organic matter, leading to enhanced sulfidization due to high rates of sulfate reduction. This study emphasizes the importance of turbidite sedimentation in the sulfur, carbon, and iron biogeochemical cycling.
SEDIMENTARY GEOLOGY
(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)