dolomite cores

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Grosmont Dolomite Cores from Various Formation Depths ...

· Dissolution and ζ potential of dolomitic particles obtained from six cores at various depths in the Grosmont carbonate formation were studied after the bitumen was extracted. Changes in specific conductivity and pH during mixing and after equilibration for 12 h were indicators of dissolution. Zeta potentials were measured as functions of pH and concentrations of common lattice cations Ca2 ...

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Enhanced oil recovery from low permeability dolomite …

Recovery of 6% oil using biosurfactants produced by Bacillus mojavensis (PTCC 1696) on low permeability of dolomite cores [46]. Câmara et al. [47] used biosurfactant from Pseudomonas aeruginosa ...

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The formation of the ore-bearing dolomite marble from …

· The ore host rock is traditionally assigned to the dolomite marble unit H8, which is overlain by H9 K-rich slate. The Bayan Obo deposit is located at the center of the Kuangou syncline, which consists of several chevron folds, shear zones, and thrust faults (Yang et al. 2017).The deposit is exploited in three open pits, the Main, Eastern, and Western, which host predominantly Fe reserve ...

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Ankerite grains with dolomite cores: A diffusion ...

Dolomite cores are typically ≤20 μm in diameter, have sharp but irregular contacts with ankerite, and have the same crystallographic orientation as ankerite rims. Ankerite grains with dolomite cores are common in the chlorite zone, less abundant in the biotite and garnet zones, and rare (Vermont) or absent (Maine) at …

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CATHODOLUMINESCENT AND TRANSMITTED LIGHT …

Cores typically consist of concentrically or oscillatory zoned silt-sized dolomite grains. Rims consist of a single luminescent zone of dolomite 1 to 2 µm thick. These characteristics are easily viewed by the naked eye under CL but are difficult to discern in photomicrographs of zoned dolomites because the small crystal size and long exposure ...

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6. SEDIMENTARY PETROLOGY OF DSDP CORES FROM …

· 4: Cores 28 to 43 (lower Cretaceous); Unit 5: Cores 44 to 46 (lower Cretaceous). Unit 1 is characterized by a scarcity of calcite and an abundance of terrigenous quartz, Plagioclase, K-feldspar, and clay minerals. Cores 6 and 7, especially, lack calcite and dolomite. These cores and Core 8 in Unit 2 contain significant amounts of clinoptilolite.

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Membrane properties of intact rock cores of Burlington ...

· MEMBRANE PROPERTIES OF INTACT ROCK CORES OF BURLINGTON LIMESTONE, JEFFERSON DOLOMITE, DARRINGTON PHYLLITE, AND LOW PERMEABILITY CONCRETE by MEGAN LEANORE HART A DISSERTATION Presented to the Faculty of the Graduate School of the MISSOURI UNIVERSITY OF SCIENCE & TECHNOLOGY In Partial Fulfillment of the Requirements …

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Dolomite cores evaluated by NMR - ScienceDirect

· Silurian dolomite outcrop samples with 3.8 cm of diameter and lengths ranging from 4.2 to 4.9 cm were used. Gas porosity and permeability were measured in the UltraPore 300 Porosimeter from CoreLab Instruments without overburden pressure and the UltraPerm 500 Permeabilimeter from CoreLab Instruments using an overburden pressure of 600 psi, respectively.

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Relationship of Porosity and Permeability to Petrology of ...

· Dolomite Intertidal-supratidal dolomite Laminated dolomicrite Intraclastic dolomite Crystalline dolomite with relict allochems ... Porosity and permeability of cores in Madison Limestone marker intervals in U.S. Geological Survey test wells 1, 2, and 3 19 ...

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Contribution of carbonate weathering to the CO2 efflux ...

· The soil CO 2 in the A-horizons of the whole dolomite soil cores was significantly 13 C enriched compared to that in separately incubated A-horizons (p = 0.0013, repeated measures ANOVA) (Fig. 4). In dolomite soil cores, the δ 13 C values of soil CO 2 in the A/C and C-horizons were slightly higher than in the A-horizons (Fig. 4).

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GChron - Towards in situ U–Pb dating of dolomite

Dolomite cores in this sample are much brighter in BSE compared to their concentric enclosing rims, probably due to the higher Mg / Ca ratio and minor concentration of Fe (Fig. 6a; Olanipekun and Azmy, 2017). Dolomite crystals from sample KM-1 display mainly a concentric zoning pattern with a very thin lamina separating the core from the rim.

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Ankerite grains with dolomite cores: A diffusion ...

· Dolomite cores are typically ≤20 mm in diameter, have sharp but irregular contacts with ankerite, and have the same crystallographic orientation as ankerite rims. Ankerite grains with dolomite cores are common in the chlorite zone, less abundant in the biotite and garnet zones, and

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Guelph Dolomite Cores from Kocurek Industries

Guelph Dolomite . Indiana LS 2-4mD . Indiana LS 9-16mD . Indiana LS 16-20mD . Lueders . Silurian Dolomite . Winterset LS . Bonne Terre . Cordova Cream . Indiana LS 30-50mD . Mt. Gambier . Rocherons . Wisconsin LS . Alabama Marble . Buda Limestone . Indiana LS 135-220mD . …

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Dolomite cores evaluated by NMR - ScienceDirect

Nuclear Magnetic Resonance (NMR) is a very versatile technique that allows the characterization of several petrophysical properties such as porosity, pore size distribution and fluid saturation and, unlike other techniques, it is possible to be applied on field scale through well loggings and in laboratory scale on the analysis of samples.

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Welcome to 45th Annual Meeting, Eastern …

· Specific cores are still being selected, but will include the Cambrian-Ordovician Knox Group, Ordovician Trenton-Black River, and Silurian Lockport Dolomite. The Knox cores will be from several deep CO2 storage test wells recently drilled in …

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Inside-Out Dolomite | Journal of Sedimentary Research ...

The cores of the inside-out dolomite crystals, labeled as Type II, have an irregular outline characterized by angular reentrants and/or embayments, micropores that are usually larger than those in the Type I cores, but few calcite inclusions. The cortical zones have a euhedral rhombic motif irrespective of …

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Experimental Investigation of the Breakdown of …

Two samples of Reed Dolomite from southwestern Nevada were cut into cylinders approximately 4 x 6 mm in size. The cores were sealed in gold capsules with …

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Figura Decorativa em Dolomite Cors - …

· As cores ou tonalidades podem variar em função das características e ajustes, tais como brilho ou cor do dispositivo com o qual é visto. Completa da sua colecção com Figura Decorativa em Dolomite Cors

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Experimental Investigation of the Breakdown of dolomite …

· The kinetics of the breakdown reaction dolomite = periclase + calcite + CO2 were investigated using cores of dolomitic marble. Two samples of Reed Dolomite from southwestern Nevada were cut into cylinders approximately 4 x 6 mm in size. The cores were sealed in gold capsules with isotopically enriched water ((H2O)-O-18 or (HDO0.5)-O-18 O-16(0.5)).

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"Experimental Investigation of the Breakdown of Dolomite ...

The kinetics of the breakdown reaction dolomite = periclase + calcite + CO2 were investigated using cores of dolomitic marble. Two samples of Reed Dolomite from southwestern Nevada were cut into cylinders approximately 4×6 mm in size. The cores were sealed in gold capsules with isotopically enriched water (H218O or HD 18O0.5 16 O0.5). The samples were heated in a cold-seal hydrothermal ...

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Ankerite grains with dolomite cores: A diffusion ...

· Ankerite grains with dolomite cores occur in marls, pelites, and psammites from a Buchan terrain in Maine and a Barrovian terrain in Vermont (U.S.A.). Dolomite cores are typically ≤20 mm in diameter, have sharp but irregular contacts with ankerite, and have the same crystallographic orientation as ankerite rims. Ankerite

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Experimental Investigation of the Breakdown of …

Two samples of Reed Dolomite from southwestern Nevada were cut into cylinders approximately 4 x 6 mm in size. The cores were sealed in gold capsules with isotopically enriched water ( (H2O)-O-18 ...

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24. PETROGRAPHY AND GEOCHEMISTRY OF RED SEA …

· 24. PETROGRAPHY AND GEOCHEMISTRY OF RED SEA DOLOMITE Peter R. Supko,1 Peter Stoffers,2 and Tyler B. Copied INTRODUCTION Examination of piston cores and, particularly, sediments collected by the Deep Sea Drilling Project has shown that authigenic dolomite occurs in a wide range of sedimentary associations. While the trace to a small percentage of

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Dolomite Petrography and Stable Isotope Geochemistry …

· dolomite aggregates, and as the cores to overgrowths of phase 2 dolomite (Figures 3 and 4). Within the aggregates and the cores of larger overgrowth rhombs, phase 1 dolomite can show planar-e to planar-s growth bands (Figure 4). This phase of dolomite contains abundant monophase aqueous fluid inclusions, which are commonly oriented along

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· However, recent cores show that the development horizon and scale of the sucrosic dolomite is of great variability. Therefore, the key to the distribution prediction of this type of dolomite reservoir is to figure the genetic mechanism out.

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Abstract: THE ENIGMA OF ANKERITE WITH DOLOMITE …

· Dolomite cores are typically <20 μm in diameter, have sharp but irregular contacts with ankerite, and have the same crystallographic orientation as ankerite. Dolomite cores are common in the chlorite zone, present but less abundant in the biotite and garnet zones, and rare at higher grades.

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