Results 81 to 90 of about 8,956 (166)

High-frequency palaeoenvironmental changes on a shallow carbonate platform during a marine transgression (Late Oxfordian, Swiss Jura Mountains) [PDF]

open access: yes, 2018
Based on a well-established bio- and sequence-stratigraphic framework, a narrow time window in the Bimammatum ammonite zone (Late Oxfordian) is investigated in six Swiss Jura sections representing a shallow-water carbonate platform.
Strasser, André, Védrine, Stéphanie
core  

An inventory of the marine and transitional Middle/Upper Eocene deposits of the Southeastern Pyrenean Foreland Basin (NE Spain) [PDF]

open access: yes, 2003
In the southeastern Ebro Foreland Basin, the marine deposits of Lutetian and Bartonian age show excellent outcrop conditions, with a great lateral and horizontal continuity of lithostratigraphic units.
Barnolas, Antonio   +11 more
core   +4 more sources

Multiscale Digital Core Technology for Analyzing the Genesis of Low‐Resistivity Oil Reservoirs in the Guantao Formation of Bohai Sea: Clay Mineral‐Induced Additional Conductivity Effect, Pore Structure Regulation Mechanism, and Quantitative Characterization

open access: yesGeofluids, Volume 2026, Issue 1, 2026.
The genetic mechanism of low‐resistivity oil reservoirs in the Guantao Formation of the Bohai Sea is complex, and understanding the role of clay minerals and pore structures in forming low resistivity remains unclear. This study employed multiscale digital core technology to integrate multisource digital core data.
Hao Zhang   +5 more
wiley   +1 more source

Estratigrafía y análisis de facies de la Formación Vaca Muerta en el área de El Trapial [PDF]

open access: yes, 2015
La importancia de los análisis estratigráficos, de facies y sedimentológicos para evaluar el potencial de un reservorio no convencional para identificar las zonas más favorables para la prospección y explotación de hidrocarburos.Fil: González Tomassini ...
Crousse, Luisa C.   +4 more
core  

Changes in hydrodynamic, structural and geochemical properties in carbonate rock samples due to reactive transport [PDF]

open access: yes, 2017
Reactive transport plays an important role in the development of a wide range of both anthropic and natural processes affecting geological media. To predict the consequences of reactive transport processes on structural and hydrodynamic properties of a ...
Carrera Ramírez, Jesús   +2 more
core   +2 more sources

A Novel Intelligent Sedimentary Microfacies Identification Model Based on Limited Well‐Logging Data

open access: yesInternational Journal of Intelligent Systems, Volume 2026, Issue 1, 2026.
Sedimentary microfacies identification is fundamental for reservoir characterization, directly influencing hydrocarbon exploration and production strategies. However, traditional methods relying on core analysis, seismic interpretation, and manual well‐log analysis face significant challenges: (1) high costs and limited coverage of coring data, (2 ...
Tianru Song   +4 more
wiley   +1 more source

Ostracods and lithofacies close to the Eifelian-Givetian boundary (Devonian) at Aisemont (Namur Synclinorium, Belgium) [PDF]

open access: yes, 2006
The paper presents the sedimentological analysis and the ostracod study of the upper part of the Rivière Fm. and of the stratotype of the Névremont Fm.
Casier, J.-G., Préat, A.
core  

The Cenomanian–Turonian boundary interval in the Western Canada Foreland Basin: Stratigraphy, geochemistry, geochronology and sea‐level changes recorded in expanded and condensed clastic successions

open access: yesThe Depositional Record, Volume 11, Issue 5, Page 1200-1258, November 2025.
Shallow‐marine mudstone of the Cretaceous Kaskapau Formation in the British Columbia foredeep preserves a 185 m thick record of OAE2. The organic carbon‐isotope and osmium‐isotope excursions can be correlated in detail with other Cenomanian–Turonian boundary sections around the world.
A. Guy Plint   +12 more
wiley   +1 more source

Inner Asian Agropastoralism Within the Mongol Empire: Multi‐Proxy Investigations at Sel'Ungur Cave, Kyrgyzstan

open access: yesGeoarchaeology, Volume 40, Issue 6, November/December 2025.
ABSTRACT Agropastoralism has been a widespread subsistence strategy in Central Asia from prehistory to the present. While significant research has aimed at understanding past agropastoral communities in the region, reconstructing a generalized economic model remains challenging due to the complex topographic and ecological conditions, as well as its ...
G. Brancaleoni   +13 more
wiley   +1 more source

Mikrofasies Batugamping Formasi Bulu dan Kualitas Bahan Baku Semen, pada Lapangan Gunung “Payung”, Kecamatan Bogorejo, Kabupaten Blora Jawa Tengah [PDF]

open access: yes, 2014
Bulu Formation is one of formation which is sedimented at Tertiary age in The North East Java Basin. Bulu Formation has a lithological composition of limestones with kalkarenit.
Aribowo, Y. (Yoga)   +2 more
core  

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