Results 101 to 110 of about 7,725 (211)

Genesis and reservoir preservation mechanism of 10 000‐m ultradeep dolomite in Chinese craton basin

open access: yesDeep Underground Science and Engineering
The 10 000‐m ultradeep dolomite reservoir holds significant potential as a successor field for future oil and gas exploration in China's marine craton basin.
Guangyou Zhu   +8 more
doaj   +1 more source

Dolomitization of Ordovician Kelimoli carbonates linking to shale oil formation, western Ordos Basin: new insights from magnesium and strontium isotopes

open access: yesFrontiers in Earth Science
Deciphering the dolomitization process has great significance for high-quality hydrocarbon reservoir prediction in carbonate successions. The Ordovician Wulalike Formation provides shale oil in the western Ordos Basin, while lateral-contact marine ...
Xianghui Jing   +8 more
doaj   +1 more source

Oxygen isotope composition of the Phanerozoic ocean and a possible solution to the dolomite problem [PDF]

open access: yes, 2018
The ^(18)O/^(16)O of calcite fossils increased by ∼8‰ between the Cambrian and present. It has long been controversial whether this change reflects evolution in the δ^(18)O of seawater, or a decrease in ocean temperatures, or greater extents of ...
Eiler, John M., Ryb, Uri
core   +1 more source

Efects of secondary late dolomitization on 87Sr/86Sr isotopic ratio; examples from Ossa-Morena Zone carbonates [PDF]

open access: yes, 2018
The 87Sr/86Sr ratio is usually used in stratigraphy to correlate and even date marine carbonate sedimentation events. The variation of the 87Sr/86Sr isotopic ratio along the geological time scale combined with the fact of this isotopic ratio could be ...
Araújo, António   +7 more
core  

Multi-stage dolomitization in the Lower-Middle Triassic succession of the High-Tatric series (Western Tatra Mts., Poland) [PDF]

open access: yes, 2012
The paper is focused on multi-stage dolomitization process in the Lower-Middle Triassic succession of the High-Tatric series from the Western Tatra Mts.
Jaglarz, Piotr
core  

Origin of Late Cretaceous dolomites at the southern margin of the Central System, Madrid Province, Spain [PDF]

open access: yes
Este trabajo ha consistido en la caracterización petrográfica y geoquímica de las unidades dolomíticas del Cretácico Superior que se encuentran en el borde Sur del Sistema Central, en la interpretación del ambiente diagenético de precipitación de las ...
Benito, M.I., Mas, R.
core   +1 more source

Magnesium geochemistry of authigenic carbonate at marine cold seep

open access: yesFrontiers in Marine Science
Cold seeps, featured by their extremely methane-rich sedimentary environments, play a significant role in the geological history and are common in marine sediments across the seafloor.
Yukai Tang   +3 more
doaj   +1 more source

Dolomitization Related to Zn-(Pb) Deposits in the Río Mundo Area (Riópar, Albacete) [PDF]

open access: yes, 2013
España. Ministerio de Economía y CompetitividadDepto. de Mineralogía y PetrologíaFac.
Cardellach, Esteve   +7 more
core  

Procjena prošlih promjena u okolišu proučavanjem sedimenata u hiperslanoj laguni [PDF]

open access: yes, 2006
Carbon and oxygen isotopes, organic matter elemental composition, and mineralogy of carbonates were used as proxies to investigate environmental changes recorded in the carbonate-rich sediment of the hypersaline lagoon "Vermelha", Rio de Janeiro ...
Angela de L. R. Wagener   +3 more
core   +1 more source

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