Results 131 to 140 of about 92,035 (266)

Evolution Model for the Paleoproterozoic Talvivaara Mudstone‐Hosted Ni‐Zn‐Cu‐Co Deposit in Fennoscandia

Terra Nova, EarlyView.
ABSTRACT The Paleoproterozoic Talvivaara mudstone is a very large sulfidic Ni‐Co deposit that records enhanced organic matter accumulation during the global Shunga Event. Here, rock geochemistry and microscale S and Fe isotope composition of in situ pyrrhotites and pyrites are studied in well‐characterised, well‐preserved drill core samples.
Raimo Lahtinen, Jaakko J. Laitala, Joonas J. Virtasalo, Martin J. Whitehouse   +3 more
wiley   +1 more source

Modification of dolomitization on reservoir spaces in reef–shoal complex: A case study of Permian Changxing Formation, Sichuan Basin, SW China

Open Geosciences
The porosity of the reef–shoal complex increases with the increase of dolomite content, and it is worth investigating whether dolomitization leads to the formation of new pores or maintains the original porosity.
Zhang Qiang, Liu Lizhi, Song Honglu, Jin Chaosu, Qiao Na, Qi Lin   +5 more
doaj   +1 more source

Influence of structural setting, depositional environment and differential diagenesis on reservoir quality of the Xixiangchi formation in the central and southern Sichuan Basin, China

Frontiers in Earth Science
The Middle-Upper Cambrian Xixiangchi Formation (504 - 488 Ma) dolomite in the central-southern Sichuan Basin constitutes significant hydrocarbon reservoirs, though their complex genetic mechanisms remain inadequately constrained.
Shizhen Chen, Shizhen Chen, Shizhen Chen, Huaguo Wen, Huaguo Wen, Huaguo Wen, Xiang Li, Xiang Li, Xiang Li, Fei Huo, Bowen Mo, Bowen Mo, Bowen Mo, Jintong Liang, Jintong Liang, Jintong Liang, Lian Duan, Lian Duan, Lian Duan   +18 more
doaj   +1 more source

Investigating Synthetic Dolomite Mixtures and Phase Adjustment Parameters in Electrochemical Cement Precursor Production [PDF]

Chemphyschem
The electrochemical dissolution of synthetic dolomite mixtures and reconstitution into hydroxide precursor phases suitable for Portland cement and Mg‐based cements is investigated. Adjustments of the experimental parameters during electrolysis allow for adjustments in product phase distribution, shedding insight into mixture separation techniques in ...
Ramuglia A, Ly P, Hurst‐Fraunhofer S, Scheel J, Henze K, Köberle T, Bon V, Kaskel S, Mechtcherine V, Matschei T, Liebscher M, Weidinger I.   +11 more
europepmc   +2 more sources

Problems of the “Cordevolian Limestone and Dolomite” in the Slovenian part of the Southern Alps

Geologija, 2004
Stratigraphic position and age of the so called Cordevolian limestone and dolomite in the Slovenian part of the Southern Alps (figure 1) is a long lasting problem.
Bogomir Celarc
doaj  

Accelerated Ageing of Blast Furnace Cement-Dolomite Mortars: Phase Changes, Microstructural Evolution, and Mechanical Performance. [PDF]

Materials (Basel)
Sutormina E, Marinšek M, Meden A.
europepmc   +1 more source

Phanerozoic seawater Mg/Ca variations driven by supercontinent cycles. [PDF]

Nat Commun
Zhang P, Kendrick MA, Han Y, Ma L, Huang KJ.   +4 more
europepmc   +1 more source

Controls on Development and Classification of Gypsum Mold-Vuggy Reservoirs: A Case Study from the Majiagou Formation, Jingbian Gas Field. [PDF]

ACS Omega
He J, Luo Y, Li W, He C, Qiao L, Ma X, Liu Q, Li H, Fang S, Zhao Z, Jiang S, Wang M.   +11 more
europepmc   +1 more source

DOLOMITE MINERAL EFFECTIVENESS ON THE SANDSTONE RESERVOIR PERMEABILITY

مجلة جامعة الزيتونة
The matrix rock formation acidization technique might be a regular mode to improve the sandstone rock permeability surrounding the wellbore. The dolomite rock (CaMg(CO3)2 can plug the pay zone around the wellbore and cause permeability reduction action ...
Omar Aluhwal, Farad Faraj
doaj  

Acid Dissolution of Magnesian-Calcite Stromatolites from Lagoa Salgada: An Experimental Evaluation Using X‑ray Microtomography. [PDF]

ACS Omega
Serra VFH, da Silva JP, da Cunha ACS, Neyra JR, Lucas CRDS, da Silva DNN, Aum PTP.   +6 more
europepmc   +1 more source