Article
Geochemistry & Geophysics
Hui Xie, Ning Qiu, Hongcai Shi, Zhen Sun, Jinyun Zheng
Summary: This study focused on the crustal structure and Cenozoic subsidence and sedimentary evolution of the Pearl River Mouth Basin (PRMB) and the Qiangdongnan Basin (QDNB) along the northern margin of the South China Sea (SCS). The crustal structure of the PRMB has a wedge shape, while that of the QDNB has a symmetrical shape with intensive thinning in the Central Canyon. The PRMB showed multi-episodic sedimentation and subsidence evolution, with rapid subsidence rates synchronized with the decrease in the seafloor spreading rate of the SCS basin. The sedimentary and subsidence rate curves in the QDNB exhibited accelerated sedimentation and subsidence in the western segment and accelerated subsidence with slow sedimentation in the eastern segment after 11.6 Ma. Low-velocity conduits, possibly related to the Hainan mantle plume, were discovered in the middle and eastern QDNB.
Article
Geosciences, Multidisciplinary
Ophelie Pascault, Christophe Durlet, Pierre-Alexandre Teboul, Maxime Ducoux, Jean-Pierre Girard, Aurelien Virgone, Thomas Saucede
Summary: This article investigates the Larrano igneous body contemporaneous with the Urgonian limestones in the Duranguesado platform. The study combines morpho-structural, diagenetic, geochemical, and sedimentological approaches to explore the impacts of the magmatic events on the surrounding carbonate sediments. The results reveal the basaltic magma rising along normal faults and forming early diagenetic phases, indicating thermal shock and warm seawater circulation during and after the intrusion.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Gaurav Tomar, Srikumar Roy, Christopher J. Bean, Satish C. Singh, Brian 'Reilly, Nick Schofield
Summary: The Iceland Plume has had a significant impact on the North Atlantic region. A volcanic ridge system known as the Barra Volcanic Ridge System (BVRS) has been identified in the Rockall area, but its timing, morphology, extent, and emplacement mechanism are not well understood. Through seismic and magnetic analysis, it is suggested that the BVRS could be volcanoes of basaltic compositions, and the integration of gravity and seismic data indicates a thin crust beneath the BVRS. The volcanic intrusions in the BVRS possibly occurred after the Early Paleocene age, which coincides with the arrival of the Iceland mantle plume in the Rockall region.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Hepeng Tian, Majie Fan, Victor Valencia, Kevin Chamberlain, Lowell Waite, Robert J. Stern, Matthew Loocke
Summary: This study reports the geochronology and geochemistry of volcanic tuffs in southwestern Laurentia, providing insights into the magmatic sources and plate reorganization related to Laurentia-Gondwana collision. The results suggest a late Cisuralian plate reorganization caused by plate reorganization following Pangea assembly. The change in eHf values of zircons indicates magmatism related to subduction of a paleo-Pacific oceanic plate beneath western Pangea.
Article
Geosciences, Multidisciplinary
Gabriel M. Marins, Yaro Parizek-Silva, John M. Millett, Dougal A. Jerram, Lucas M. M. Rossetti, Ariany de Jesus e Souza, Sverre Planke, Leandro A. Bevilaqua, Isabela de O. Carmo
Summary: This study provides a comprehensive evaluation of volcanic reservoirs in offshore oil fields in Brazil, revealing the key role of primary volcanic facies and subsequent alteration history in determining reservoir properties.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
P. Reynolds, S. Holford, N. Schofield, A. Ross
Summary: This study documented the morphology and emplacement of a multi-lobed mafic laccolith using 3D seismic reflection data, highlighting the laccolith's importance in magma plumbing systems. The laccolith exhibited characteristics of classic laccoliths and shallowly emplaced mafic sills, and its detailed mapping could assist in identifying similar features in energy-rich sedimentary basins using seismic data.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Weichao Tian, Shuangfang Lu, Jie Li, Weiming Wang, Jijun Li, Zhigang Wen
Summary: The pore structure characteristics of sub-aqueous volcanic rocks (SVRs) in the Santanghu Basin were analyzed using various experimental methods. The results show that SVRs have ink bottle-shaped pores with low matrix permeabilities, fine pore throats, and high capillary pressures. The full-range pore size distribution indicates the presence of intercrystalline pores, dissolved pores, and residual vesicles, with intercrystalline pores dominating the storage space. The content of dissolved pores and residual vesicles in SVRs is influenced by factors such as water body depth during deposition and proximity to the volcanic strata boundary.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jianjiang Wen, Mengdi Sun, Ziang Cui, Jingyi Wang, Heng Zhang, Zhongxian Cai, Mehdi Ostadhassan, Qi Wang, Qinhong Hu
Summary: In this study, the oil charging characteristics and pore structure of the Lower Cambrian Xiaoerbulake Formation in the Tarim Basin were investigated. The results showed that the microbial dolomites had the highest oil charging force and smallest pore throat threshold, making them the most favorable lithofacies for the accumulation and migration of oil and gas.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geochemistry & Geophysics
G. Boudoire, G. Giuffrida, M. Liuzzo, N. Bobrowski, S. Calabrese, J. Kuhn, J-C Kazadi Mwepu, F. Grassa, S. Caliro, A. L. Rizzo, F. Italiano, M. Yalire, K. Karume, A. Muhindo Syavulisembo, D. Tedesco
Summary: The chemical composition of volcanic gas emissions and fumaroles at Nyiragongo and Nyamulagira in the Democratic Republic of Congo provides insights into the origin of magmatic fluids along the East African Rift System. The study suggests that these volcanic fluids mainly come from the Sub-Continental Lithospheric Mantle (SCLM) or the Depleted Morb Mantle (DMM) and deeper sources. Additionally, carbonate metasomatism in the lithospheric mantle source contributes to the high CO2/He-3 ratio in the fumaroles.
Article
Geosciences, Multidisciplinary
Zhaohui Zhang, Hongguo Yu, Huayong Chen, Shekuan Du, Chao Li
Summary: This study analyzes the geological, well logging, and production data to quantitatively characterize and study the igneous hydrocarbon reservoirs in the Junggar Basin. The study finds that different volcanic lithofacies have differences in physical properties, fracture development, and distribution. The study also reveals that the degree of fracture development has a higher impact on productivity than porosity, and different volcanic lithofacies have different influences on fracture development.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Janmejaya Sahoo, Prabodha Ranjan Sahoo, Israil Khan, Akella Satya Venkatesh
Summary: Copper and associated gold mineralization in the Mundiyawas-Khera area of western India is mainly hosted by Proterozoic felsic volcanic rocks, accompanied by hydrothermal alteration. Geological, geochemical, and stable isotope data suggest that these deposits may be classified as VMS/VHMS type, providing insights for the discovery of new deposits in nearby areas.
Article
Geosciences, Multidisciplinary
Peijia Chen, Nianqiao Fang, Xiaobo Yuan, Ziyi Wang
Summary: The Sanshui Basin is a continental rift basin located at the southern continental margin of the South China Block. It is known for its widely distributed bimodal volcanic rocks. However, the petrogenesis of these volcanic rocks, especially the felsic volcanic rocks, is not well understood. In this study, the petrology, geochronology, and geochemistry of trachytes and rhyolites from the basin were investigated to gain insight into their petrogenesis and geodynamic implications. The results revealed peralkaline affinity in these volcanic rocks and indicated that they were formed by fractional crystallization with minor crustal contamination. The volcanic activity in the Sanshui Basin peaked in the Eocene, around 56 million years ago, and provided crucial insights into the Cenozoic breakup of the continental margin of South China.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geochemistry & Geophysics
C. Tichadou, M. Godard, M. Munoz, P. Labaume, A. Vauchez, E. C. Gaucher, S. Calassou
Summary: The study focused on the petrology, mineralogy, and geochemistry of hydrothermally altered peridotites from the North-Western Pyrenean belt, revealing different degrees of serpentinization and reaction paths in the cooling process. The formation of magnetite in these samples was found to be influenced by fluid composition rather than solely by temperature, leading to variations in serpentinization pathways within and among different massifs.
Article
Geology
Qinglin Sui, Denghui Chen, Xiaojian Zhao, Xianfeng Zha, Jiming Sun, Lipeng Zhang, Xiaofeng Gao, Weidong Sun
Summary: This study provides information on the geological evolution of the Proto-Tethys Ocean by analyzing mineral geological data from the Tianshuihai Terrane. The results reveal that subduction-related magmatic activity in the Proto-Tethys Ocean occurred along the northern margin of the East Gondwana continent during the Late Neoproterozoic-Early Palaeozoic, gradually propagating to the east.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Shui-Yuan Yang, Jia-Peng Liang, Shao-Yong Jiang, Xing Zhang, Ruo-Xi Zhang
Summary: The study of volcanic rocks in the Gan-Hang Belt reveals their formation ages, petrogenesis, and tectonomagmatic evolution, suggesting that these volcanic rocks were formed in a back-arc extensional environment caused by slab rollback.
Article
Geosciences, Multidisciplinary
Matthew T. Reeve, Craig Magee, Christopher A-L Jackson, Rebecca E. Bell, Ian D. Bastow
Summary: This study examines the breakup unconformities and rock record in the offshore NW Australia, finding that these unconformities are related to magma intrusion and continental crust breakup. The study supports the idea that the 'breakup unconformity' is not always a single stratigraphic surface marking the onset of seafloor spreading.
Article
Green & Sustainable Science & Technology
Yuting Zhang, Christopher Jackson, Christopher Zahasky, Azka Nadhira, Samuel Krevor
Summary: This study uses logistic models to identify growth trajectories and resource base for CO2 storage consistent with European targets. The results show that achieving these targets requires a significant increase in annual injection rates, but the current resource base is sufficient. Only in the case of significantly limited storage resources would mitigation plans be constrained.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Geosciences, Multidisciplinary
Clara Abu, Christopher A. -L. Jackson, Malcolm Francis
Summary: This study investigates the kinematics and deformation process of a large submarine slide in the Angoche Basin, offshore Mozambique using high-resolution 3D seismic surveys. The results reveal the key kinematic indicators and propose a two-phase emplacement model for the slide formation. The study demonstrates the importance of using 3D seismic reflection data to understand the multiphase, non-coaxial nature of deformation and the dynamics of basal shear zone growth.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2022)
Letter
Geosciences, Multidisciplinary
Craig Magee, Matthew T. Reeve, Christopher A. -L. Jackson, Rebecca E. Bell, Ian D. Bastow
Article
Geosciences, Multidisciplinary
Aurio Erdi, Christopher A. -L. Jackson, Juan I. Soto
Summary: This study investigates the temporal and spatial evolution of thin-skinned deformation on the Tarakan Basin in offshore eastern Indonesia using 3D seismic reflection data. The results reveal concave- and convex-into-the-basin normal faults on a basal mobile shale, with normal faulting and shale mobilization starting in the Middle Miocene. The growth faults and anticlines in the delta system are influenced by variations in sedimentary loading, mobile-shale flow, and the trend and dip of the base mobile-shale surface.
Article
Geosciences, Multidisciplinary
Amir Joffe, Christopher A. -L. Jackson, Leonardo M. M. Pichel
Summary: Salt tectonics is primarily driven by the movement of evaporites due to gravity gliding and differential loading. Understanding the complexities of salt basins is crucial, especially when carbonate and clastic rocks interbed with evaporitic strata. Using seismic reflection and borehole data, we analyze the formation and deformation of minibasins within the Zechstein Supergroup in the Devil's Hole Horst, UK. Our findings refine the depositional model for the Central North Sea and provide insights into syn-depositional salt flow in layered evaporitic sequences and its impact on petroleum plays.
Article
Geosciences, Multidisciplinary
Thilo Wrona, Alexander C. Whittaker, Rebecca E. Bell, Robert L. Gawthorpe, Haakon Fossen, Christopher A. -L. Jackson, Marit Stokke Bauck
Summary: This study utilizes new 3D seismic reflection data from the northern North Sea to reveal a continental rift landscape dating back to the Late Permian-Early Triassic. The landscape, preserved by a combination of tectonic faults and burial sediments, provides valuable insights into the tectono-stratigraphic evolution of ancient continental rifts.
Article
Geology
Nan Wu, Christopher A. L. Jackson, Michael A. Clare, David M. Hodgson, Harya D. Nugraha, Michael J. Steventon, Guangfa Zhong
Summary: In this study, we used seismic reflection, geochemical, and petrophysical data to investigate how the physical properties of oozes control slope failure and emplacement processes. We discovered potential slide surfaces within ooze successions, which is crucial for improved submarine geohazard assessment. Additionally, we found that tectonics, ocean current activity, and silica diagenesis can prime multiple slides on low-gradient slopes in tropical oceanic basins.
Article
Geology
Ander Martinez-Donate, Ian A. A. Kane, David M. M. Hodgson, Aurelia M. L. J. Privat, Christopher A. L. Jackson, Ernesto Schwarz, Stephen S. S. Flint
Summary: The Los Molles Formation in the Neuquen Basin of Argentina provides a rare opportunity to study syn-rift to post-rift stratigraphy. A field-based study in the Chachil Graben revealed the stratigraphic evolution of two deep-marine intraslope lobe complexes, which were built by different types of flows and exhibited differences in their characteristics. Petrographic analysis further showed that the lobe complexes are volcanic arc-sourced. The study also proposed a model for intraslope lobe complex development and highlighted the importance of flow behavior and transformation in understanding their hydrocarbon reservoir potential.
Article
Geosciences, Multidisciplinary
Lise Nakken, Domenico Chiarella, Christopher A-L. Jackson
Summary: In this study, a model of the Late Jurassic rift physiography of the Froan Basin and Froya High is presented based on seismic reflection, well data, and reverse subsidence modelling. The results show that major footwall uplift during the Late Jurassic to Early Cretaceous caused the Froya High and the western margin of the central Froan Basin to be subaerially exposed, forming an intra-rift footwall island. Shallow marine areas to the east accumulated sediment supplied from the uplifted and partially eroded footwall, while the Trondelag Platform remained submerged throughout the rift episode.
Article
Geosciences, Multidisciplinary
Liu Cao, Qiliang Sun, Craig Magee
Summary: Structures facilitating fluid migration above a late Cretaceous volcanic field in the Great South Basin, offshore New Zealand, have been documented. Three vertically stacked vents suggest episodic re-use of the same fluid pathway between approximately 75 and 56 million years ago (Ma). The presence of a ca. 49 Ma palaeo-pockmark and free gas in strata ca. 21 million years old directly above these stacked vents implies the re-utilization of fluid migration pathways over a period of over 54 million years. The findings have important implications for hydrocarbon/geothermal exploration and geohazard assessment.
Article
Geosciences, Multidisciplinary
Francyne Bochi do Amarante, Juliano Kuchle, Christopher Aiden-Lee Jackson, Claiton Marlon dos Santos Scherer, Leonardo Muniz Pichel
Summary: Rift basins typically go through three main tectono-stratigraphic stages: pre-, syn- and post-rift. The syn-rift stage is characterized by the deposition of asymmetric growth strata wedges due to active normal faulting, while the subsequent post-rift stage is defined by long-wavelength subsidence driven by lithospheric cooling.
Article
Geochemistry & Geophysics
Edoseghe E. Osagiede, Casey W. Nixon, Rob Gawthorpe, Atle Rotevatn, Haakon Fossen, Christopher A. -L. Jackson, Fabian Tillmans
Summary: The spatial variation of the topological characteristics of normal fault networks at the rift-scale is investigated using 3D seismic reflection data from the northern North Sea. It is found that fault orientation varies spatially along the rift margin, with different dominant strikes in fault blocks adjacent to the graben compared to those farther from the graben. Two broad topological domains are identified within the fault network, which correlate with the sub-division of the rift margin into different structural domains. There is also a positive correlation between fault orientations and intensity, highlighting the relationship between fault geometry and topology.
Article
Geology
Nan Wu, Christopher A. L. Jackson, Michael A. Clare, David M. Hodgson, Harya D. Nugraha, Michael J. Steventon, Guangfa Zhong
Summary: This study investigates the impact of changes in physical properties of oozes during burial on slope stability and geohazards. The researchers used various data, including seismic reflection, geochemical, and petrophysical data, to analyze submarine slides on the Exmouth Plateau. The findings highlight the importance of considering the diagenetic state of silica-rich sediments in future slope stability assessments.