Article
Geosciences, Multidisciplinary
Henrik Nohr-Hansen, Gunver Krarup Pedersen, Paul C. Knutz, Jorgen A. Bojesen-Koefoed, Kasia Kamila Silwinska, Jussi Hovikoski, Jon R. Ineson, Lars Kristensen, Jens Therkelsen
Summary: The core analysis of boreholes drilled in northeast Baffin Bay revealed a Lower Cretaceous succession of sandstones, mudstones, and thin coal beds of Albian age, dominated by terrestrial material and brackish-water dinoflagellate cysts. The Upper Cretaceous sedimentary succession of Cenomanian-Turonian age consists of black marine mudstone with varying amounts of discrete sand layers, suggesting deposition in an anoxic-dysoxic to oxygen-restricted paleoenvironment with variable organic richness and petroleum potential.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Energy & Fuels
Amer Jassim Al-Khafaji, Fahad M. Al-Najm, Rana A. K. Al-Refaia, Fadhil N. Sadooni, Mohanad R. A. Al-Owaidi, Hamid A. Al-Sultan
Summary: The Yamama Formation in the southern Mesopotamian Basin, Iraq, is a significant reservoir and source rock. The formation has varying hydrocarbon potential and organic matter types due to different depositional environments. This study provides important insights for the development and management of oil and gas resources.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geology
D. Tanfous, F. Dhahri, H. Gabtni, M. Saidi, M. Soussi
Summary: The Jeffara basin in Southeastern Tunisia is an important petroleum province, and its crustal structure is closely related to the evolution of its petroleum systems. The analysis of gravity data reveals that the crustal thinning setting has locally controlled the burial histories of the oil fields.
JOURNAL OF IBERIAN GEOLOGY
(2022)
Article
Energy & Fuels
Novikov Dmitry Anatolievich
Summary: Using water-gas equilibrium calculations, the study reveals the equilibrium state of oil and gas and water in a petroliferous basin with high saline water content. It is found that the gas saturation coefficient of formation water is related to depth and total gas saturation, with layers having gas saturation greater than 1.8 L/L favoring hydrocarbon accumulation. Unsaturated formation water can dissolve existing gas, and the gas saturation coefficient varies with the type of fluid in the reservoir.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Energy & Fuels
Paula Alexandra Goncalves, Andreia Morgado, Joao Graciano Mendonca Filho, Joalice Oliveira Mendonca, Deolinda Flores
Summary: The study of the vertical variation of organic matter along the Gaiteiros-1 borehole reveals changes in environmental conditions and depositional environments in different Jurassic layers, reflecting variations in sea level, oxygen conditions, climate, and proximity to terrestrial source areas.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Raissa Castro, Martino Giorgioni, Vladimir de Souza, Moeme Ramos, Lorena Malta Feitoza, Rodolfo Dino, Luzia Antonioli
Summary: The Tacutu Basin was formed during the Mesozoic rift system in the Caribbean region, with the Pirara Formation representing the rift phase of its evolution. Recent investigations on rock cores of the Pirara Formation indicate it to be a playa lake environment that developed in the Late Jurassic-Early Cretaceous in the Southern Caribbean region.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Energy & Fuels
Danielle Marques-Lima, Joao Graciano Mendonca Filho, Carolina Fonseca, Antonio Donizeti de Oliveira, Joalice de Oliveira Mendonca, Paula Alexandra Goncalves
Summary: The Aptian-Albian sedimentary record of the Parnaiba Basin in NE Brazil provides insights into the evolution of a large shallow sag basin during the early opening stages of the South Atlantic. The study characterizes the nature, variability, and paleoenvironmental significance of the organic matter in the sedimentary succession, revealing alternating lacustrine and restriction periods with different depositional environments and organic contributions.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Wieslawa Radmacher, Osmin J. Vasquez, Mario Tzalam, Mireya Jolomna, Anny Molineros, James S. Eldrett
Summary: Organic palynological content in rocks is crucial for sediment dating, paleoenvironmental reconstructions, and hydrocarbon potential determination. However, the palynological signal may be affected by various diagenetic processes, leading to the need for further discussion and analysis.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Energy & Fuels
Benatus Norbert Mvile, Emily Barnabas Kiswaka, Olawale Olakunle Osinowo, Isaac Muneji Marobhe, Abel Idowu Olayinka, Elisante Elisaimon Mshiu
Summary: The study interprets Late Cretaceous-Quaternary stratigraphy of the Tanga offshore Basin in Tanzania to understand basin development and petroleum potential. It reveals the influence of tectonic activities on the sedimentary basin and petroleum systems, with a focus on tectonic quiescence in Late Cretaceous and extensional regime in Quaternary. The research suggests that under the right conditions, these stratigraphic formations have hydrocarbon potential.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Michail V. Shaldybin, Michael J. Wilson, Lyudmyla Wilson, Alexandra V. Muslimova, Daria A. Cherdantseva, Petr B. Molokov
Summary: The West Siberian Sedimentary Basin (WSSB) is a key sedimentary basin in Russia for oil and gas production, with main oilfields located in the Lower Cretaceous and Jurassic sandstone reservoirs. This study focused on the petrography and mineralogy of these reservoirs, highlighting the clay mineral characteristics and origins of the sedimentary sequences. The Upper Lower Cretaceous sequence is associated with high iron content from volcanic debris, while the Lower Jurassic sequence shows more kaolinitic clay minerals derived from weathering and authigenic conversion processes.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Review
Geosciences, Multidisciplinary
Adele H. Pentland, Stephen F. Poropat
Summary: The Gondwanan pterosaur record is relatively scarce, with most of the remains found in South America. The South American pterosaur assemblage is the most diverse in Gondwana, including several lineages such as Raeticodactylidae, Rhamphorhynchoidea, Darwinoptera, Ctenochasmatidae, Gnathosaurinae, Nyctosauridae, Ornithocheiridae, Tapejaridae, Thalassodromidae, Dsungaripteridae, Chaoyangopteridae, and Azhdarchidae.
Article
Geosciences, Multidisciplinary
John Gama, Lorenz Schwark
Summary: This study presents a comprehensive geochemical analysis of source rock intervals in the Mandawa Basin, Tanzania, to determine organic matter types and quality. The results show that the organic matter richness is low and the potential for oil generation is generally fair. The study also reveals high spatial variability in organic matter quality in the region.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Paleontology
Li-Qin Li, Yong-Dong Wang, Vivi Vajda
Summary: This study presents the results of palynofacies analyses combined with thermal alteration data in the Early Mesozoic deposit of the Qilixia section in the northeastern Sichuan Basin, revealing the presence of potential gas resources. These findings provide significant implications for better understanding the paleoenvironment variations during the Triassic-Jurassic transition and future gas exploration in the area.
Article
Geography, Physical
Alessandra Santos, Marcelo A. De Lira Mota, Henrique P. Kern, Gerson Fauth, Paulo S. G. Paim, Renata G. Netto, Daniel Sedorko, Ernesto Luiz C. Lavina, Guilherme Krahl, Claus Fallgatter, Deise Marli da Silveira, Carolina D. Aquino, Marinez O. dos Santos, Simone Baecker-Fauth, Carlos Eduardo L. Vieira
Summary: This study provides new evidence for the inception of the Equatorial Humid Belt (EHB) in the late Aptian, challenging previous views of a predominantly arid Equatorial Gondwana before the Albian. The research shows that sporomorph genera richness scales directly with precipitation levels and supports the hypothesis of a southward EHB displacement leading to wetter climates in low-latitude biomes. The study also raises a plausible mechanism linking changing interhemispheric sea surface temperature gradient and the dynamics of a proto-Intertropical Convergence Zone (ITCZ) in the Early Cretaceous.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geology
Gustavo Santiago, Marcelo de Araujo Carvalho, Renato Rodriguez Cabral Ramos, Sandro Marcelo Scheffler
Summary: The Santa Marta Formation in the Antarctic Peninsula is an important sedimentary sequence that provides insights into paleoenvironmental changes. The distribution of sedimentary organic matter reveals three distinct palynofacies associations and shows a progressive transgression from terrestrial to marine environments.
CRETACEOUS RESEARCH
(2024)
Article
Geosciences, Multidisciplinary
Salah Y. El Beialy, Mohamed K. Zobaa, Asmaa A. Taha
Review
Plant Sciences
Mohamed I. A. Ibrahim, Mohamed K. Zobaa, Zainab M. El-Noamani, Sameh S. Tahoun
Article
Geology
H. A. Wanas, E. Sallam, M. K. Zobaa, X. Li
SEDIMENTARY GEOLOGY
(2015)
Article
Geosciences, Multidisciplinary
Adam Barron, Mohamed K. Zobaa, Francisca E. Oboh-Ikuenobe
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2017)
Review
Geology
Mohamed K. Zobaa, Francisca E. Oboh-Ikuenobe
JOURNAL OF IBERIAN GEOLOGY
(2018)
Article
Geosciences, Multidisciplinary
Mohamed K. Zobaa, Francisca E. Oboh-Ikuenobe, Mohamed I. Ibrahim
MARINE AND PETROLEUM GEOLOGY
(2011)
Article
Geography, Physical
Aaron J. Shunk, Steven G. Driese, James O. Farlow, Michael S. Zavada, Mohamed K. Zobaa
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2009)
Article
Geography, Physical
Mohamed K. Zobaa, Michael S. Zavada, Michael J. Whitelaw, Aaron J. Shunk, Francisca E. Oboh-Lkuenobe
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2011)
Article
Geochemistry & Geophysics
Colin MacRitchie, Mohamed K. Zobaa
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2019)
Editorial Material
Geochemistry & Geophysics
Sumit Verma, Olga Nedorub, Fangyu Li, Tao Zhao, Mohamed Zobaa, Robert Trentham, Ron Bianco, Vikram Jayaram
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2019)
Article
Plant Sciences
Haytham El Atfy, Salah Y. El Beialy, Mohamed K. Zobaa, Asmaa A. Taha, Dieter Uhl
Summary: The palynological investigation of the Oligocene Dabaa Formation in the Abu El Gharadig Basin in Egypt suggests an early Oligocene age for the formation, with evidence of different depositional environments in the lower and upper parts of the studied section. The Oligocene period marked significant changes in vegetation, leading to the development of modern plant associations like temperate deciduous forests.
Article
Geosciences, Multidisciplinary
Samuel Yaw Danso, Yi Ma, Adams Osman, Isaac Yeboah Addo
Summary: This study conducted a spatial assessment and mapping of flood hazards in the Sekondi-Takoradi Metropolis (STM) of Ghana using the Analytical Hierarchy Process (AHP) and geographical information system. The results indicate that about 12% of STM lands are in very high flood zones and 24% are in high flood zones. The lower portions of STM are identified as the most susceptible to inundation. These findings provide valuable insights for effective flood planning and prevention in STM.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Kesyton Oyamenda Ozegin, Stephen Olubusola Ilugbo
Summary: The study utilizes analytical hierarchical process and geoinformatics-based approaches to define groundwater potential zones in Edo State, Nigeria. The results show that high groundwater potential zones are mainly located in Edo-central and isolated portions of Edo-south, while low to very low potential zones are found in the study's northern region.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Maham Eboubekrine Sedigh, Houssa Ouali, Michel Jebrak, Abdelkader Mokhtari
Summary: The carbonatites from the Richat dome in Mauritania are unique and underdocumented geological features. This study provides insight into the mineralogy and petrogenesis of the carbonatites, revealing three identified types and their association with spinel-bearing peridotite. The geochemical characteristics of the Richat carbonatites are similar to other Cretaceous alkaline carbonatite occurrences in different regions, suggesting a common geological process. The reactivation of a deep pan-African lineament is considered a fundamental factor in the formation of the Richat carbonatites.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Riadh Aouissi, Gamal Mohamed El Qot, Sihem Salmi-Laouar, Catalina Gomez-Espinosa, Blanca E. Buitron-Sanchez
Summary: Twenty-one gastropod species have been identified in the Cenomanian deposits of Bellezma-Aures mountains, eastern Saharan Atlas, Algeria, with four of them recorded for the first time in the Batna mountains. These gastropods are mainly found in the 'Marnes de Smail' Formation, and their community changes may be attributed to minor sea-level fluctuations, sedimentation rate variations, and hydrodynamics. The paleobiogeographic distribution of these gastropod assemblages indicates a tethyan affinity and faunal exchange during that time interval.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Behnam Esmaeili, Sirous Hosseinzadeh, Ali Kadkhodaie, David A. Wood, Samira Akbarzadeh
Summary: This research applies image analysis and clustering algorithms to estimate porosity and permeability of petroleum reservoir rocks, and demonstrates that the results from image analysis are consistent with traditional analysis methods, with acceptable correlation. In addition, different depositional environments and hydraulic flow units are identified through image analysis.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Jianqi Zhuang, Jianbing Peng, Zhenhong Li, Yanqiu Leng, Xinghua Zhu, Weiliang Huang, Zhijie Jia, Yang Liu, Yi Zhu
Summary: The study on gully erosion in the East African Rift Valley of Kenya reveals that human activities and rainstorms are the main factors causing erosion. Gully erosion poses a serious threat to the ecological environment, particularly the man-made and fissure-induced gullies that should be further investigated.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)