Article
Geology
Belal S. Salem, Patrick M. O'Connor, Eric Gorscak, Sanaa El-Sayed, Joseph J. W. Sertich, Erik Seiffert, Hesham M. Sallam
Summary: The discovery of Upper Cretaceous dinosaur fossils in the Western Desert of central Egypt adds to the limited record of dinosaurs in the region. The fossils include various types of dinosaurs, such as titanosaurian sauropods and non-avian theropods, indicating a diverse ecosystem supporting non-avian dinosaurs in Late Cretaceous North Africa.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Zaki A. Abdel-Fattah
Summary: This paper focuses on the fluvial architecture and depositional facies model of the Late Cretaceous large sandy braided-river system of the Nubia Formation in the central Eastern Desert of Egypt. It identifies two distinctive fluvial architectural styles in the lower and upper members, highlighting different characteristics and depositional environments. The fluvial depositional system and sequences are strongly controlled by Late Cretaceous base-level fluctuations and tectonic pulses of the Laramide Orogeny.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Mahmoud Leila, Aya Yasser, Mohamed El Bastawesy, Ahmed El Mahmoudi
Summary: The Middle Jurassic syn-rift sediments in the Western Desert of Egypt, known as the Khatatba Formation, have potential as hydrocarbon reservoir targets. This study integrates seismic, well logs, and core data to analyze the sedimentary patterns and factors affecting distribution and quality of reservoir facies. The formation comprises two discrete units with distinct rift phases, showing repeated cycles of progradation and retrogradation with an overall progradational trend.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Biodiversity Conservation
Haytham El Atfy
Summary: The study identified three different palynological assemblages from the Alam El Bueib Member, Kharita/lower Bahariya, and Abu Roash formations collected from the Faghur Hj5-1 well in the north Western Desert of Egypt using optical examination methods. These assemblages revealed information about the depositional environments in the studied rock units, with the Alam El Bueib samples showing mixed marine and non-marine organic facies, and the Kharita/lower Bahariya interval being mostly barren with one sample containing a diverse palynological assemblage. The kerogen composition and facies variations also provided insights into the depositional environments and hydrocarbon potential of the studied formations.
PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS
(2021)
Article
Multidisciplinary Sciences
Belal S. Salem, Matthew C. Lamanna, Patrick M. O'Connor, Gamal M. El-Qot, Fatma Shaker, Wael A. Thabet, Sanaa El-Sayed, Hesham M. Sallam
Summary: A new study reports an isolated cervical vertebra fossil from the Bahariya Formation in Egypt, representing the oldest confirmed record of Abelisauridae in Egypt and northeastern Africa, demonstrating the wide geographical distribution of this clade in North Africa during the mid-Cretaceous period.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Tarek Anan, Amina Reda, Ahmed El-Belasy, Adam El-Shahat
Summary: The study of the Middle Miocene Marmarica Formation in the northern part of the Western Desert of Egypt revealed three members and two sequence boundaries, indicating relative sea-level oscillation. Sedimentation of the Marmarica Formation took place on a homoclinal ramp and was affected by dolomitization.
GEOLOGICAL JOURNAL
(2022)
Article
Energy & Fuels
Amer Shehata, Mohamed Abdel-Fattah, Hamdan Hamdan, Mohammad Sarhan
Summary: The study focuses on the seismic interpretation and sequence stratigraphic analysis of the Bahariya Formation in the South Umbaraka oilfields. The Lower Bahariya sequence shows superior reservoir characteristics, highlighting the importance of stratigraphy and structural factors. Seismic analysis reveals diverse structural features.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Geology
Valeria S. Perez Loinaze, Magdalena Llorens, Jose I. Cuitino, M. Veronica Guler, Juan Cruz Villan
Summary: Palynomorph assemblages recovered from the upper levels of the Cretaceous Rio Mayer Formation in the Rio Lista area, southern Argentina, suggest an early Aptian age and a progressively shallowing marine setting for deposition of the unit, as evidenced by the decrease in abundance of marine elements and the increase of Pterospermella. These interpretations are consistent with sedimentological analyses of the same stratigraphic section.
CRETACEOUS RESEARCH
(2021)
Article
Environmental Sciences
Sultan A. S. Araffa, Maha Abdelazeem, Hassan S. Sabet, Ahmed M. Al Dabour
Summary: The El Moghra area in the western desert of Egypt is part of a national reclamation project that relies on the local El Moghra Formation as its main aquifer. The region has good soil suitable for agricultural development. The subsurface stratigraphy consists of six geo-electrical units, with the main aquifer represented by the fourth and sixth units intercalated with a clay unit.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Walaa A. Hassan, Ezzat A. Ahmed, Rashad Sawires, Mohamed A. Moneim, Mostafa R. Abukhadra
Summary: The Upper Cretaceous tidal-flat sediments in the Abu Tartur region of the Western Desert of Egypt contain a variety of complex and large softsediment deformation structures (SSDSs). These structures, including water-escape structures, folds, faults, and others, were likely triggered by earthquakes and syn-sedimentary liquefaction. The recognition of these structures provides insight into the geological history and tectonic activity of the area.
JOURNAL OF AFRICAN EARTH SCIENCES
(2022)
Article
Energy & Fuels
Waleed Osman, Mohamed Kassab, Ahmed ElGibaly, Hisham Samir
Summary: This study evaluates the Kharita gas reservoir to enhance production by accurately determining pore throats, pores connectivity, and fluid distribution. Integration of core and logging data responses helps draw inferences about lithology, depositional sequences, facies, and fluid content, based on petrophysical models. The study also utilized a new unconventional petrophysical evaluation approach, resulting in doubling the volumes in the Upper Kharita reservoir.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Pedro Kress, Octavian Catuneanu, Ricardo Gerster, Nestor Bolatti
Summary: The study of the evolutionary process of the Argentine margin from the Early Cretaceous to the Late Cretaceous has identified four major turning points, involving crustal breakup, changes in the coastline, variations in water depth, and reorganization of sediment dispersal systems.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geography, Physical
Carina Hoorn, Tyler Kukla, Giovanni Bogota-Angel, Els van Soelen, Catalina Gonzalez-Arango, Frank P. Wesselingh, Hubert Vonhof, Pedro Val, Gaspar Morcote-Rios, Martin Roddaz, Elton Luiz Dantas, Roberto Ventura Santos, Jaap S. Sinninghe Damste, Jung-Hyun Kim, Robert J. Morley
Summary: During the Miocene period, a large wetland system existed in western Amazonia that had unique sedimentary features and biological communities. The study conducted in Los Chorros site in Colombia revealed a sequence of flood-fill packages with distinct lithological, palynological, malacological and geochemical characteristics that reflect the changing environmental conditions in the wetland. Analysis of sediment sources and biomes indicate the influence of dynamic topography, Andean uplift, eustasy, and orbital forcing on sediment deposition and wetland evolution during the Miocene.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Multidisciplinary Sciences
Noha Imam
Summary: Data on the recent migratory history and geochemical circumstances of radionuclides can be obtained from the disequilibrium of the uranium series, mainly caused by groundwater flow and host rock. The Siwa Oasis groundwater, which serves as a vital water source, was dated by measuring uranium levels. Disequilibrium behavior in water samples indicated high concentrations of U-234 and Th-230. The observation of Th-230/Th-232 activity ratios suggested the presence of pure carbonate minerals in the aquifer.
SCIENTIFIC REPORTS
(2023)
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
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)
Article
Geosciences, Multidisciplinary
Mohamed K. Zobaa, Salah Y. El Beialy, Hassan A. El-Sheikh, Mohamed K. El Beshtawy
JOURNAL OF AFRICAN EARTH SCIENCES
(2013)
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.