Article
Geosciences, Multidisciplinary
Molly Turko, Shankar Mitra
Summary: The Anadarko Basin in south-central Oklahoma contains oil and gas fields located on anticlinal structures formed during the Pennsylvanian Orogeny. The structural geometry and kinematic evolution of the Carter-Knox, Cruce, Chickasha, and Cement structures were interpreted using new seismic and well data, revealing tight faulted-detachment folds within Pennsylvanian units and deeper low amplitude fault-related folds within prePennsylvanian carbonate units. The evolution of these structures was influenced by mechanical stratigraphy, pre-existing basement structures, and a rotation in stresses during the final stage of their formation.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
F. Carboni, H. Koyi, A. Bicocchi, M. R. Barchi
Summary: This study uses scaled analogue models to investigate the influence of basal detachment configuration on the evolution of extensional systems. The results show that the geometry, distribution, kinematics, and timing of faults are strongly controlled by the geometry and orientation of the ductile-brittle interface. Faults close to the interface follow its geometry, while those further away show reduced effects. Additionally, the study finds that longer ductile detachments accommodate a higher number of faults with lower extension and greater spacing.
JOURNAL OF STRUCTURAL GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Marc Schori, Frank Zwaan, Guido Schreurs, Jon Mosar
Summary: The pre-existing faults in the mechanical basement play a crucial role in controlling deformation in thin-skinned fold-and-thrust belts. The presence of basement steps leads to deformation localization and influences the evolution of structures. These findings provide insights into the deformation processes of the Earth's crust.
Article
Geosciences, Multidisciplinary
Cedric M. John, Ilyas Kussanov, Nicolas Hawie
Summary: This study presents new model results from carbonate reservoirs in the Northern Kazakhstan, highlighting the need for revisions of existing seismic reflector picks for better model accuracy. The modeling results provide insights into the regional controls on stratigraphic stacking patterns and distribution of reservoir facies, as well as the impact of sediment production rates on reservoir heterogeneities and pressure-barriers.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geography, Physical
Ann Rowan, David L. Egholm, Chris D. Clark
Summary: Glacial landscapes serve as valuable archives of terrestrial paleoclimate change, with moraines playing a significant role in recording these changes. However, the complex dynamics of glaciers, including response time and mountainous topography, make moraines a less straightforward indicator of glacier change in response to climate change. By using a glacial landscape evolution model, researchers found that the rate of climate change relative to glacier response time determines the geometry, number, and position of moraines.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geosciences, Multidisciplinary
Christophe Larroque, Stephane Baize, Julie Albaric, Herve Jomard, Jenny Trevisan, Maxime Godano, Marc Cushing, Anne Deschamps, Christian Sue, Bertrand Delouis, Bertrand Potin, Francoise Courboulex, Marc Regnier, Diane Rivet, Didier Brunel, Jerome Cheze, Xavier Martin, Christophe Maron, Fabrice Peix
Summary: The analysis of the seismicity catalog from 1996 to 2019 in the region from the Jura mountains to Corsica provides insights into the distribution of earthquakes, highlighting large structures and active faults. The seismic behaviors can be explained by different geological domains, variable theological characteristics, and mechanisms of deformation. There have been several significant earthquakes with M > 6 since the 14th century until the beginning of the 20th century.
COMPTES RENDUS GEOSCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Adeline Marro, Louis Hauvette, Sandra Borderie, Jon Mosar
Summary: The study presents a new 2D kinematic forward model for the westernmost Internal Jura fold-and-thrust belt, which provides new insights into its kinematic evolution. The model suggests a pure thin-skinned style dominated by forward stepping deformation and minor back-stepping thrust sequences. Multiple thrust horizons and decollements are found within different layers in the Jura FTB.
SWISS JOURNAL OF GEOSCIENCES
(2023)
Article
Geochemistry & Geophysics
Igor Ognev, Joerg Ebbing, Peter Haas
Summary: In this study, a new crustal model of the Volgo-Uralian subcraton was presented using a combination of satellite gravity and seismic data. The model reflects the variations in crustal thickness and the main geological features of the region, which is useful for further analysis of the area.
Article
Geosciences, Multidisciplinary
Luca Smeraglia, Olivier Fabbri, Flavien Choulet
Summary: The study explored the subsurface structural styles of the Jura fold-and-thrust belt in eastern France by combining geological mapping, cross-section balancing, and 2D-kinematic forward modeling. The results revealed mixed structural styles in the region, with similarities to other fold-and-thrust belts characterized by thick salt-bearing basal detachments and multiple detachment horizons within the sedimentary sequence. The findings can serve as a benchmark for comparing structural styles in similar fold-and-thrust belts.
JOURNAL OF STRUCTURAL GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Oriol Ferrer, Eloi Carola, Ken McClay
Summary: This study investigates the role of pre-existing structural features during inversion by using analogue models. The experimental results show that thick salt layers tend to preserve the original basin geometry, while thin salt layers result in total inversion and the development of grabens and extensional faults. Inversion also triggers the growth or reactivation of salt-related structures. These experimental results provide a template for interpreting the structural styles resulting from the positive inversion of basins with a pre-extensional salt layer in areas with poor seismic imaging.
Article
Engineering, Geological
Jean Busson, Vanessa Teles, Thierry Mulder, Philippe Joseph, Nicolas Guy, Antoine Bouziat, Charles Danquigny, Emmanuelle Poli, Jean Borgomano
Summary: Slope failure and landslides are common on submarine carbonate platforms and are important factors in their stratigraphic evolution. This study evaluates various hypotheses for the preconditions of these events on the Great Bahama Bank platform. The study concludes that the combination of lateral fluid flow from the emerged platform and the steepening stratigraphic trend are key factors in preconditioning the platform margin during glacial lowstands.
Article
Geosciences, Multidisciplinary
Matias Taucare, Tomas Roquer, Gert Heuser, Nicolas Perez-Estay, Gloria Arancibia, Gonzalo Yanez, Benoit Viguier, Ronny Figueroa, Diego Morataa, Linda Daniele
Summary: This study explores the reactivation of normal faults during the Andean orogeny in the Southern Central Andes western flank. Through structural mapping and paleostress field reconstruction, two deformation phases were identified in the Pocuro Fault Zone. The earliest phase involved normal faults, while the latest phase consisted of reverse faults. By reassessing geophysical data, the observed faults were determined to be regional-scale deep-seated structures. The research provides insights into the evolutionary history of faulting in the Andean region.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)