Results 31 to 40 of about 1,267 (203)
Geofluids, Volume 2020, Issue 1, 2020., 2020 Although tectonic plates are usually considered as rigid blocks, intraplate deformation such as lithospheric buckling or diffuse brittle deformation has been recognized for a long time. However, the origin of these deformations remains puzzling. Indeed, whereas the chronology of deformation at plate boundaries can be constrained by numerous methods ...
Oriane Parizot +8 more
wiley +1 more source
Geofluids, Volume 2020, Issue 1, 2020., 2020 Ordovician carbonate rocks of the Yijianfang Formation in the Tabei Uplift, Tarim Basin, contain deeply buried (>6000 m), highly productive oil and gas reservoirs associated with large cavities (>10 m). Previous workers inferred that large cavities are paleocaves (paleokarst) formed near the surface and subsequently buried.
Vinyet Baqués +5 more
wiley +1 more source
Paleokarst features in the Aptian carbonates of the Barra Velha Formation, Santos Basin, Brazil
Brazilian Journal of Geology, 2023 Seismic data, borehole image logs, and conventional well logs were used to investigate the distribution and characteristics of paleokarst features in the Aptian carbonates of the Barra Velha Formation in a pilot area of the Santos Basin, Brazil. Multiple
David Chibuzor Nworie +2 more
semanticscholar +1 more source
Petroleum Exploration and Development, 2021 Based on a large number of drilling, logging, seismic and production data, the differential structures of karst zone and hydrocarbon distribution in different paleogeomorphic units of the Tahe area, Tarim Basin, are discussed by analyzing the karst ...
San ZHANG +6 more
doaj +1 more source
Geofluids, Volume 2020, Issue 1, 2020., 2020 The exploratory borehole Megiddo‐Jezre’el 1 (MJ1) was drilled in Israel, in the Bet She’an Valley which branches out from the Central Jordan Rift. It reached the depth of 5060 m and bottomed within the Upper Triassic Mohilla Fm. Following the increase of groundwater exploitation, the Cl- concentrations increased and ionic ratios changed indicating ...
Eliahu Rosenthal +4 more
wiley +1 more source
Shiyou shiyan dizhi, 2022 Seismic and drilling data were obtained to study the paleo-karst development conditions and cave developmental characteristics of the Middle-Lower Ordovician in the incised meandering canyon area on the western slope of Tahe Oilfield, Tarim Basin.
Changjian ZHANG +2 more
doaj +1 more source
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
Hydrogeology Journal, 2023 Paleokarst and paleokarst aquifers are not as well-documented as shallow karst, and studies of pores and pore networks are rare. Paleokarst lacks the open conduits typical of karst due to compaction, infilling, and diagenetic recrystallization by deep ...
T. R. Carter +4 more
semanticscholar +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
Paleokarst features and reservoir distribution in the Huanglong Formation of eastern Sichuan
Petroleum Exploration and Development, 2011 The identification markers of paleokarst have been described in detail and include a combination of surface geology, drilling data and the isotopic characteristics of carbon, oxygen and strontium.
Zhang Bing +6 more
doaj +1 more source