Article
Microbiology
Ho-Chuan Hsu, Jung-Sheng Chen, Viji Nagarajan, Bashir Hussain, Shih-Wei Huang, Jagat Rathod, Bing-Mu Hsu
Summary: The microbial communities in mud volcanoes are important for the global methane cycle. This study focused on the temporal effects of volcanic eruptions on bacterial diversity and functions in southern Taiwan. The results showed significant changes in community composition and predicted functions over time, influenced by both environmental factors and microbial interactions.
Article
Environmental Sciences
K. S. Banerjee, A. Ifill
Summary: The present study was conducted in the Piparo mud-volcano to detect the possible changes in gamma radiation levels after its eruption. The study found good correlations between elevated radiation in certain areas and the presence of auxiliary craters. These findings suggest that the Piparo mud-volcano is likely to affect radiation levels in the surrounding area.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2022)
Article
Geosciences, Multidisciplinary
Francis Odonne, Patrice Imbert, Dominique Remy, Germinal Gabalda, Adil A. Aliyev, Orhan R. Abbasov, Elnur E. Baloglanov, Victoria Bichaud, Remy Juste, Matthieu Dupuis, Sylvain Bonvalot
Summary: The study reveals that the morphology contrast between flat and conical mud volcanoes in Azerbaijan is influenced by both surface and subsurface structures, with different growth mechanisms and depth of mud chambers for each type of volcano. Flat mud volcanoes primarily grow through radial expansion and compression of the flanks, while conical mud volcanoes grow by flow stacking in the summit caldera, constrained by the caldera rim.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Svetlana N. Kokh, Ella V. Sokol
Summary: The violent eruption of Karabetova Gora mud volcano on 6 May 2000 triggered a giant vertical gas flare, reaching maximum temperatures of approximately 1400-1540°C. The short-lived gas flare lasted for about 15 minutes and caused thermal shock, resulting in the melting or annealing of mud masses. The dispersed blocks of melted mud covered distances within 30 meters around the volcano conduit.
Article
Geosciences, Multidisciplinary
Xiao Liu, Jiyao Xu, Jia Yue, Masaru Kogure
Summary: This study investigates a unique type of gravity waves induced by the Tonga volcano eruption, using temperature profiles obtained from the Sounding of the Atmosphere using Broadband Emission Radiometry. The eruption was found to produce strong gravity waves in the mesosphere, with characteristics differing from those associated with other volcanic eruptions and extreme weather events.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Multidisciplinary Sciences
D. C. Roman, A. Soldati, D. B. Dingwell, B. F. Houghton, B. R. Shiro
Summary: The viscosity of magma strongly influences the style and hazard potential of a volcanic eruption. The unexpected 2018 eruption of Kilauea Volcano in Hawai'i demonstrated significant variability in erupted lavas, leading to unpredictable effusion rates and explosivity. Seismic and magma rheology analysis revealed a 90-degree local stress-field rotation prior to the eruption, indicating the involvement of magma with heightened viscosity.
Article
Geochemistry & Geophysics
Olivier Lengline, Zacharie Duputel, P. G. Okubo
Summary: This study used seismic records to infer the migration of the dike in the lower East Rift Zone of the Kilauea volcano, finding that the migration is consistent with a logarithmic model connected to a feeding magma chamber. The results suggest that the dynamics of magma transfer can be monitored in real time through the combination of seismic data and physical models.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
D. Skye Kushner, Taryn M. M. Lopez, Kristi L. L. Wallace, David E. E. Damby, Christoph Kern, Cheryl E. E. Cameron
Summary: This study analyzes the mercury concentrations in 227 bulk ash samples from the Mount Spurr (1992), Redoubt Volcano (2009), and Augustine Volcano (2006) eruptions. The results show that there is no significant difference in mercury concentrations based on distance or discrete eruptive events, but there is a significant difference among different volcanic sources. It is also found that previous approaches to estimate volcanic total mercury emissions underestimate the mercury emitted in explosive events.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geochemistry & Geophysics
Gabrielle Tepp
Summary: The Failure Forecast Method (FFM) was tested for its applicability to caldera collapses, showing changes in seismic and ground deformation parameters during the events, but ultimately failed to predict the collapse events or the end of the eruption.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Multidisciplinary Sciences
Mie Ichihara, Takao Ohminato, Kostas I. Konstantinou, Kazuya Yamakawa, Atsushi Watanabe, Minoru Takeo
Summary: The accelerating growth of seismic unrest before eruptions has been observed at many volcanoes and utilized for eruption forecasts. However, there are still many eruptions for which no precursory unrest has been identified, even at well-monitored volcanoes. Here we present seismological evidence that the eruption preparation had been ongoing at the shallow depths beneath Shinmoe-dake for several months to a year.
SCIENTIFIC REPORTS
(2023)
Article
Geosciences, Multidisciplinary
Paul Segall, Kyle Anderson, Taiyi A. Wang
Summary: In 2018, Kilauea volcano erupted causing caldera collapse after a decade of basalt eruption. However, less than 2.5 years later, Kilauea erupted again. Analysis of magma surges and Global Positioning System data suggests that the pressure condition required to bring magma to the surface was met at the onset of the 2020 eruption.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Angel Amores, Sebastian Monserrat, Marta Marcos, Daniel Argueso, Joan Villalonga, Gabriel Jorda, Damia Gomis
Summary: On 15 January 2022, the eruption of the Hunga-Tonga volcano in the South Pacific Ocean resulted in a violent underwater explosion, causing tsunami waves and atmospheric pressure disturbances. Numerical simulation shows an excellent agreement between the simulated wave arrival time and observations.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Mauro Rosi, Valerio Acocella, Raffaello Cioni, Francesca Bianco, Antonio Costa, Prospero De Martino, Guido Giordano, Salvatore Inguaggiato
Summary: A crucial aspect of managing a volcanic crisis is the ability of volcanologists to quickly detect an impending eruption. This study focuses on identifying different states of active volcanoes using monitoring data and highlights the importance of recognizing the state of impending eruption for timely forecasts. Applying this rationale to active volcanoes in densely populated areas demonstrates its feasibility and significance in eruption forecasting.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Environmental Sciences
Nobuo Geshi, Tadashi Yamasaki, Isoji Miyagi, Chris E. Conway
Summary: The study reveals the decompression of magma chamber during the caldera-forming eruption of Aira volcano in Japan 30,000 years ago, challenging previous theoretical models and proposing explanations for the catastrophic consequences caused by this decompression.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
Alexei Remizovschi, Rahela Carpa
Summary: Mud volcanoes are natural hydrocarbon hotbeds with unique microbial communities, but current data is scattered. To address this, researchers have built the first biologically oriented database muddy_db and integrated mud volcano data using a custom Natural Language Processing pipeline muddy_mine.
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)