Results 81 to 90 of about 144,025 (249)

Petrophysical and geochemical characterization of the late-variscan Santa Eulália Plutonic Complex (Ossa-Morena Zone, Portugal) [PDF]

, 2012
The Santa Eulália Plutonic Complex (SEPC) is a calc-alkaline granitic body located in the northern part of the Ossa Morena Zone, composed by a medium- to coarse-grained pink granite (G0 group) involving large elongated masses of mafic (gabbroic) to ...
Cruz, Cláudia, Gomes, Celeste, Lopes, José Carrilho, Machado, Joana, Nogueira, Pedro, Sant'Ovaia, Helena   +5 more
core  

Anisotropic pore fabrics in faulted porous sandstones [PDF]

, 2017
Thanks to SEM technician Peter Chung at the University of Glasgow, David Wilde and Peter Greatbatch at Keele University for careful thin section preparation, Chris Wibberley and Tom Blenkinsop for input and Kieran Keith from Harlaw Academy, Aberdeen for ...
Farrell, Natalie, Healy, David
core   +1 more source

A >70‐Myr‐Long Geomagnetic Field Reversal Hyperactivity Across the Ediacaran‐Cambrian Transition

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract The long‐term variation of the geomagnetic field is a key constraint for unraveling the geodynamo processes and the evolution of Earth's deep interior. However, the geomagnetic reversal pattern during the Ediacaran–Cambrian transition remains elusive. Here we present an integrated magneto‐ and cyclo‐stratigraphic study of a ∼1.8‐Myr‐long, late
Fuyun Shen, Bin Wen, Phil J. A. McCausland, Zheng Gong, Zongmin Zhu, Fangzheng Liu, Jingyi Wang   +6 more
wiley   +1 more source

Crustal Heterogeneity Onshore Spitsbergen: Data Integration and Forward Modeling of Potential Field Data

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract The Svalbard archipelago is well‐known for its outcropping geology, but its subsurface geometry and physical properties are less well constrained. To address this knowledge gap, a multidisciplinary approach has been applied to integrate potential field data with seismic reflection profiles, exploration boreholes and geology.
Fenna Ammerlaan, Marie‐Andrée Dumais, Aleksandra Smyrak‐Sikora, Antonia Ruppel, Kim Senger   +4 more
wiley   +1 more source

Improving the accuracy of determining the character saturation reservoirs on the results of log interpretation in the oil field "K"(Tomsk region) [PDF]

, 2009
Log interpretation has revealed a number of factors that have a significant impact on the determination of reservoir fluid content (oil saturation factor).
A A Rogov, Dakhnov B, Dobrynin B, Kosarev B, Petersile B, Rukobodjaschij dokument N°153-39.0-072-01, Djebbar Tiab, Birukova L   +7 more
core   +2 more sources

Machine Learning‐Based Seismic Subsurface Characterization: The State of the Art and Future Perspectives

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Seismic subsurface characterization involves interpreting seismic records to delineate geological features and estimate the physical properties of subsurface rocks (such as lithofacies, porosity, and fluid saturation). As an effective remote sensing technology to characterize the large‐scale spatial distribution of subsurface properties ...
Minghui Xu, Luanxiao Zhao, Mingliang Liu, Jianhua Geng   +3 more
wiley   +1 more source

Characterizing Geometrical Anisotropy of Petrophysical properties in the middle Shahejie formation, Liaohe Depression, China. [PDF]

, 2016
Knowledge of reservoir body lateral extent is important information for estimation of hydrocarbon initially in place and the recoverable quantity. This study reports a stepwise approach to evaluate geometrical anisotropy of the rapidly changing alluvial ...
Afolabi, Richard Oyekunle, Rotimi, Oluwatosin J., Zhenli, Wang   +2 more
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The Impact of Fine-scale Reservoir Geometries on Streamline Flow Patterns in Submarine Lobe Deposits Using Outcrop Analogues from the Karoo Basin [PDF]

, 2017
Improved prediction of the recovery of oil-in-place in basin-floor fan reservoirs requires accurate characterisation and modelling of multiscale heterogeneities.
Flint, SS, Hodgson, DM, Hofstra, M, Nair, KN, Peakall, J, Pontén, ASM   +5 more
core   +2 more sources

Fifty years of research on the Joulters ooid sandbody—Impact on carbonate sedimentology and diagenesis and lessons learned from an invaluable analogue

The Depositional Record, Volume 11, Issue 5, Page 1399-1432, November 2025.
The Joulters ooid sandbody of northern Great Bahama Bank is a vast expanse of muddy ooid sands partly rimmed by clean ooid sands and formed into a relatively thick layer of significant extent. Knowledge of the development of depositional and diagenetic patterns in the Joulters example has forwarded our general understanding of carbonate sedimentology ...
Paul (Mitch) Harris
wiley   +1 more source

Facies and Depositional Environment Analysis of Alternate Channel Bodies in the Flank of a Sag Structure [PDF]

, 2015
The down-dip (40o) portion turbidite Cenozoic deposits of the western sag structure in the Bohai bay been characterized for stratigraphy. Laterally tracking continuity in temporal data becomes challenging with increase in offset. In achieving this and
Alaigba, David, Enaworu, E., Rotimi, Oluwatosin J., Zhenli, Wang   +3 more
core