Results 21 to 30 of about 3,343 (212)

Current hydrogeochemical profile of groundwater in the Middle Jurassic hydrogeological complex of the Lyaminsky oil and gas field

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2023
The aim of the study is to identify the influence of some parameters of the geological environment on the formation of the current hydrogeochemical profile in the Middle Jurassic hydrogeological complex (layers YU2-4) of the Lyaminsky oil and gas field ...
R. N. Abdrashitova   +3 more
doaj   +1 more source

Paleotemperature reconstructions based on vitrinite thermometry data (on the example of the Upper Paleozoic deposits of the Dnieper-Donets depression and the adjacent margins of the Donbas)

open access: yesГеофизический журнал, 2023
The article is devoted to paleotemperature reconstructions based on the data on the reflectance of the vitrinite of coal organic matter in the Upper Paleozoic deposits of the Don-Dnieper trough (within the Dnieper-Donets depression and adjacent parts of
A.V. Ivanova, V.B. Gavryltsev
doaj   +1 more source

An Early Miocene Lowland on the Northeastern Tibetan Plateau

open access: yesFrontiers in Earth Science, 2021
The northeastern Tibetan Plateau (NE TP) has long been thought to be the last part of the Plateau to be raised, but this assumption has been challenged by recent analyses of fossil leaf energy, which have pointed to the possibility that the present ...
Qian Tian   +7 more
doaj   +1 more source

Temperature Variation on the Central Tibetan Plateau Revealed by Glycerol Dialkyl Glycerol Tetraethers From the Sediment Record of Lake Linggo Co Since the Last Deglaciation

open access: yesFrontiers in Earth Science, 2020
The Tibetan Plateau (TP) has numerous glaciers that provide water for more than one-third of the world’s population. Reconstructing past temperature change on the TP provides a valuable context for assessing the current and possible future status of ...
Yue He   +9 more
doaj   +1 more source

Calcite deformation twins in Pohorje marbles

open access: yesGeologija, 2018
Marbles in Pohorje occur in lenses and smaller bodies in the southern and southeastern part of the massif. Marbles are very pure, predominantly calcitic and rarely calcitic-dolomitic, containing a maximum of 5 % of non-carbonate mineral phases.
Mirijam Vrabec   +2 more
doaj   +1 more source

A study of the stable carbon and oxygen isotope composition of recent shells of Mytilidae, especially of oxygen values in relation to temperature [PDF]

open access: yesBulletin of the Geological Society of Finland, 2014
Analyses of the stable isotopes 18O and 13C were made of modern marine shells of the widely distributed Mytilidae, primarily intertidal species, collected from beaches in Europe and southern Africa, as well as from Australia and Argentina.
J. Donner   +3 more
doaj   +1 more source

Apparently Seasonal Variations of the Seawater Sr/Ca Ratio Across the Florida Keys Reef Tract

open access: yesGeochemistry, Geophysics, Geosystems, 2023
A 4‐year time‐series of surface seawater Sr/Ca ratios was assembled across a section of the Florida Keys Reef Tract, in order to uncover any variability that might explain previously reported anomalies in regional calibrations of the coral aragonite Sr ...
Agraj Khare   +3 more
doaj   +1 more source

FOCI OF HYDROCARBON GENERATION AND THE «PALEOZOIC» OIL DEPOSITS IN THE URMAN FIELD (TOMSK REGION)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2023
Link for citation: Krutenko M.F., Isaev V.I., Korzhov Yu.V., Osipova E.N. Foci of hydrocarbon generation and the «Paleozoic» oil deposits in the Urman field (Tomsk Region). Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol.
Margarita F. Krutenko   +3 more
doaj   +1 more source

Revisiting the Cupidito unit (Cupido Formation) along peritidal carbonates from northeastern Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2020
Depositional episodes are readily identified along representative localities of the Lower Cretaceous Cupido platform in northeastern Mexico. The basal part of the Cupido Formation exhibits a progradational reef platform that, at the upper limit, is ...
Felipe de Jesús Torres de la Cruz   +3 more
doaj   +1 more source

Evidence for a Relatively Warm Mid‐to Late Holocene on the Southeastern Tibetan Plateau

open access: yesGeophysical Research Letters, 2022
The Holocene temperature discrepancy between paleoclimate reconstructions and climate model simulations—known as the Holocene temperature conundrum—calls for new high‐quality Holocene temperature records at high elevations.
Xiaoping Feng   +8 more
doaj   +1 more source

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