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Examples of Paleokarst in Mesozoic Carbonate Formations in the Carpathian Foreland Area
EnergiesA paleokarst system developed in the Upper Jurassic–Lower Cretaceous carbonate complex has been recognized in the Carpathian Foreland area. Well logs testing and core data as well as an acoustic imager, a microresistivity scanner and six-arm dipmeter ...
Andrzej Urbaniec +2 more
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Formation environments and mechanisms of multistage paleokarst of Ordovician carbonates in Southern North China Basin [PDF]
Scientific Reports, 2021 With the reduction of oil and gas reserves and the increase of mining difficulty in Northern China, the carbonate rocks in Southern North China Basin are becoming a significant exploration target for carbonate reservoirs.
Haitao Zhang +3 more
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Porosity and permeability of karst carbonate rocks along an unconformity outcrop: A case study from the Upper Dammam Formation exposure in Kuwait, Arabian Gulf [PDF]
Heliyon, 2021 Diagenetic changes are a concern in carbonate petroleum reservoir management. One of the challenges is to determine whether the pore systems are related to diagenesis and/or depositions, and how associated mechanisms affect reservoir quality. The purpose
Fowzia H. Abdullah
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Frontiers in Earth Science, 2022 As a special type of fracture-cavity carbonate reservoir, fault/fracture-controlled paleokarsts are affected by large strike-slip faults with various storage spaces, irregular geometry, and stochastic spatial distribution, which brings new challenges to ...
Wenbiao Zhang +6 more
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Paleokarst coastal caves at Torricelle Hills (Lessini Mountains, Venetian Prealps, Italy)
International Journal of Speleology, 2023 This paper describes a set of paleokarst caves at Torricelle Hills near Verona (Southern Alps, Italy.) At this locality, erosional surfaces and paleokarst cavities show that sedimentation of late Paleogene neritic limestones was interrupted by subaerial ...
Guido Gonzato +4 more
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Petroleum Exploration and Development, 2013 Based on the research of unconformity type and distribution, and restoration of structural feature of paleo-uplift in the late sedimentary period of Sinian Dengying Formation, the evolution of paleokarst landform and karstic hydrodynamic field during ...
Guangya Zhang, Wangshui Hu
exaly +3 more sources
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 +7 more
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GeogacetaLa Unidad de Sierra Mágina (provincia de Jaén, sur de España), pertenece al Subbético Externo, subdominio alóctono de las Zonas Externas Béticas. El Subbético Externo está cabalgando hacia el Norte al Dominio Intermedio.
José Miguel Molina Cámara +1 more
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Open Geosciences, 2017 The Ordovician paleokarst reservoirs in the Tahe oilfield, with burial depths of over 5300 m, experienced multiple phases of geologic processes and exhibit strong heterogeneity. Core testing can be used to analyse the characteristics of typical points at
Fei Tian
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Stable isotopic evidence for increased terrestrial productivity through geological time [PDF]
Scientific ReportsMarine life on Earth is known back to the Archean Eon, when life on land is assumed to have been less pervasive than now. Precambrian life on land can now be tested with stable isotopes because living soil CO2 is isotopically distinct for both carbon and
Gregory J. Retallack, Ilya N. Bindeman
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