Results 41 to 50 of about 870 (186)

Structural controls on evaporite paleokarst development : Mississippian Madison Formation, Bighorn Canyon Recreation Area, Wyoming and Montana [PDF]

, 2012
textThis study provides new insights on the mechanisms that controlled the development of solution-enhanced fractures and suprastratal deformation associated with the Mississippian Madison Sequence IV evaporite paleokarst complex. Based on detailed field
Eldam, Nabiel S.
core   +1 more source

The karst and palaeokarst of North and North-East Greenland – physical records of cryptic geological intervals

GEUS Bulletin, 2022
Carbonate rocks of Neoproterozoic to Silurian age are abundantly distributed around the coasts of North and North-East Greenland. Palaeokarst horizons are particularly well developed within the Portfjeld Formation (Ediacaran – earliest Cambrian) and ...
M. Paul Smith, Gina E. Moseley
doaj   +1 more source

Les Gorges de Trévans dans le front subalpin – Un site exceptionnel des Alpes de Haute-Provence

Physio-Géo, 2011
The canyon system of Trevans has cut the blocks of the jurassic limestones, in subalpine over thrust front, near the Valensole piedmont. These landforms are in relationship with the neotectonic movements.
Jean Nicod
doaj   +1 more source

Isotopic characteristics of carbon and oxygen within ordovician carbonate paleokarst in the tazhong region and their paleoenvironmental significance

Frontiers in Earth Science, 2023
The Tazhong region is a key area for oil and gas exploration and development within the Tarim basin. In this region, development of Ordovician carbonate paleokarsts has been found to be extremely heterogeneous.
Qingyu Zhang, Qingyu Zhang, Bin Liang, Bin Liang, Shaocong Ji, Shaocong Ji, Jingrui Li, Jingrui Li   +7 more
doaj   +1 more source

A framework for assessing the role of karst conduit morphology, hydrology, and evolution in the transport and storage of carbon and associated sediments

Acta Carsologica, 2013
Karst aquifers and conduits form by dissolution of carbonate minerals and the slow release of inorganic carbon to the surface environment. As conduits evolve in size, morphology, and position within the aquifer, their function and capacity change ...
George Veni
doaj   +1 more source

Sedimentary environment and petrological features of organic-rich fine sediments in shallow water overlapping deposits: A case study of Cambrian Yuertus Formation in northwestern Tarim Basin, NW China

Petroleum Exploration and Development, 2020
: Taking the Cambrian Yuertus Formation outcrop profiles in the Aksu-Keping-Wushi areas of northwestern Tarim Basin as examples, the depositional environments of organic rich fine sediment were analyzed by examining the outcrop profiles macroscopically ...
Zhimin JIN, Xiucheng TAN, Hao TANG, Anjiang SHEN, Zhanfeng QIAO, Jianfeng ZHENG, Fei LI, Shixuan ZHANG, Lei CHEN, Chenggang ZHOU   +9 more
doaj   +1 more source

Study on the development model of deep carbonate paleokarst reservoirs in the Tarim Basin

Carsologica Sinica
As a critical hydrocarbon-bearing basin in China, the Tarim Basin contains exceptionally abundant oil and gas resources within its Paleozoic marine carbonate formations, particularly in the deep subsurface where it exhibits significant exploration ...
Qingyu ZHANG, Guoquan NIE, Shaocong JI, Hongqi DONG, Jingrui LI, Junjie BA, Guochen MO, Meng ZHANG   +7 more
doaj   +1 more source

Perfiles paleokarsticos en el techo de la unidad intermedia del mioceno de la cuenca de Madrid

Estudios Geologicos, 2003
En el techo de la Unidad Intermedia del Mioceno de la Cuenca de Madrid se ha desarrollado un paleokarst temprano, somero y de forma tabular que muestra un marcado control litológico y del dispositivo de facies deposicionales en su génesis.
J. C. Cañaveras, S. Sánchez-Moral, S. Sánchez-Moral, S. Ordóñez, S. Ordóñez, J. P. Calvo, J. P. Calvo   +6 more
doaj   +1 more source

Fábricas diagenéticas asociadas al paleokarst del techo de la Unidad Intermedia del Mioceno de la cuenca de Madrid

Estudios Geologicos, 1997
Los materiales carbonáticos y evaporíticos del techo de la Unidad Intermedia del Mioceno de la Cuenca de Madrid han actuado como soporte de fenómenos de karstificación temprana, cuyo desarrollo ha supuesto un cambio significativo en la evolución del ...
J. C. Cañaveras, M. Hoyos, S. Ordóñez, J. P. Calvo   +3 more
doaj   +1 more source

Rock Magnetic‐Based Cyclic Expression in Late Visean Ramp Carbonates and an Astrochronology for the Late Asbian From Northwest England

Paleoceanography and Paleoclimatology, Volume 39, Issue 3, March 2024.
Abstract The late Asbian appears to mark the initial, well‐documented, onset of far‐field glacio‐eustatic changes in equatorial Mississippian strata. This work unravels the nature of cyclicity in upper Asbian shallow marine carbonates, using a combination of petrographic study, rock magnetic proxies and astrochronological testing on samples from the ...
Mark W. Hounslow, Pedro Cózar, Ian D. Somerville, Andrew J. Biggin   +3 more
wiley   +1 more source