Results 11 to 20 of about 904,698 (289)

Applying rock mass classifications to carbonate rocks for engineering purposes with a new approach using the rock engineering system [PDF]

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2017
Classical rock mass classification systems are not applicable to carbonate rocks, especially when these are affected by karst processes. Their applications to such settings could therefore result in outcomes not representative of the real stress–strain ...
Gioacchino Francesco Andriani   +1 more
doaj   +2 more sources

Experimental investigation of calcium carbonate mineralogy in past and future oceans [PDF]

open access: yes, 2011
Inorganic marine calcium carbonate formation and mineralogy varies significantly concurrent with the solution composition. During the Phanerozoic, due to oscillations in the seawater composition, this resulted in the formation of either dominantly ...
Bots, Pieter
core   +6 more sources

The leakoff in acid fracturing kinetics control mechanism

open access: yesEnergy Reports, 2022
To study the compacted carbonate leakoff mechanism during acid fracturing process, we introduced a new characterization method. Realized acid reaction violently with carbonate reservoirs, concentration within the natural crack, larger pores or natural ...
Yuxia Wang, Qinghua Shang, Heng Wang
doaj   +1 more source

X-ray Micro CT Based Characterization of Pore-Throat Network for Marine Carbonates from South China Sea

open access: yesApplied Sciences, 2022
The pore-throat network of rock exerts a vital influence on the permeability and mechanical properties of the rock. Resorting to X-ray micro-CT scanning, the present work investigates the pore-throat structure of marine biogenic carbonate samples from ...
Haifeng Liu, Chenghao Ma, Changqi Zhu
doaj   +1 more source

Geological and geochemical characteristics and genesis of carbonate rocks in a certain area [PDF]

open access: yesE3S Web of Conferences, 2022
Carbonate rock is a general term for the rock composed of carbonate minerals, which is mainly composed of carbonate sediments, with calcite (limestone) and dolomite (dolomite) as the main forms.
Zhang Tong
doaj   +1 more source

Effects of atmospheric CO2 consumption on rock weathering in the Pearl River basin, China [PDF]

open access: yesE3S Web of Conferences, 2019
Atmospheric CO2 is absorbed and dissolved in water via karst processes not only in carbonate rock areas, but in all rock areas of the earth. The chemical and isotopic analysis results, particularly of strontium, for water samples collected from eleven ...
Qin Xiaoqun   +4 more
doaj   +1 more source

Reservoir characteristics and forming conditions for the Middle Triassic Leikoupo Formation in the western Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience, 2019
In the past few years, petroleum exploration in the Leikoupo Formation in the western Sichuan Basin of China has obtained fruitful achievements, but composite research on the carbonate rock reservoir and its control factors are lagging behind, which ...
Han Tian   +4 more
doaj   +1 more source

Effect of carbonate chemistry alteration on the early embryonic development of the pacific pyster (Crassostrea gigas) [PDF]

open access: yes, 2011
Ocean acidification, due to anthropogenic CO(2) absorption by the ocean, may have profound impacts on marine biota. Calcareous organisms are expected to be particularly sensitive due to the decreasing availability of carbonate ions driven by decreasing ...
Heip, Carlo H. R.   +33 more
core   +4 more sources

Laboratory Models of Microbial Biosignatures in Carbonate Rocks [PDF]

open access: yes, 2005
Enigmatically shaped laminated carbonate rocks called stromatolites dominated shallow marine environments for the first 80% of Earth’s history, and are potentially the oldest macrofossils.
Bosak, Tanja
core   +1 more source

Rock Physics Modeling and Seismic Interpretation to Estimate Shally Cemented Zone in Carbonate Reservoir Rock

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2016
Carbonate rock are important hydrocarbon reservoir rocks with complex texture and petrophysical properties (porosity and permeability). These complexities make the prediction reservoir characteristics (e.g.
Handoyo Handoyo   +2 more
doaj   +1 more source

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