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Weathering of calcium-rich silicate rocks (e.g., basalt and dolerite) releases calcium, magnesium and iron; this process is associated with sequestration of atmospheric CO 2 and formation of pedogenic carbonates.
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Transcrustal magmatic processes within the magmatic plumbing systems of large igneous provinces (LIPs) remain poorly constrained. Here we present petrographic textures, whole-rock and mineral geochemistry, and in situ Sr isotopes of several types of zoned plagioclase macrocrysts identified as antecrysts in the shallowly emplaced …
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DOI: 10.1680/jenge.19.00067 Corpus ID: 204140846; Dissolution experiments on dolerite quarry fines at low liquid-to-solid ratio: a source of calcium for MICP @article{Casas2019DissolutionEO, title={Dissolution experiments on dolerite quarry fines at low liquid-to-solid ratio: a source of calcium for MICP}, author={Carla C. Casas and …
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The ball milling process was carried out in a planetary mono mill. The quarry waste was subjected to wet milling in an 80 mL tungsten carbide bowl using ethanol as process control agent (PCA).The ball-to-powder mass ratio was 20:1 w/w, the fluid-to-powder mass ratio 1:2, and the rotation speed 300 rpm.The process was carried out …
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The open-cut process of limestone and sandstone quarrying generally comprised a number of stages, beginning with the removal of surface materials such as sand or rubble.
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At Barrasford Quarry (Lafarge Tarmac Ltd., Tyne Valley, England; Ordnance Survey grid reference NY914745), five trial plots were prepared with two replicates of each treatment and a single control (Fig. 1).These involved use of two quarry fines (Kelso sub-suite basalt from Craighouse quarry, Lafarge Tarmac Ltd., Melrose, Scotland; NT 600 …
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It has been used as a construction stone for thousands of years. Its most famous use is in the standing stones of Stonehenge. ... diabase is known as "dolerite". The two words are synonyms. ... but the diabase pillars came from the Carn Meini Quarry in the Preseli Mountains of southwestern Wales. The pillars weighed up to 4.5 tons each, and ...
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Dolerite fines used as a calcium source for microbially induced calcite precipitation reduce the environmental carbon cost in sandy soil ... this process is associated with sequestration of atmospheric CO2 and formation of pedogenic carbonates. ... quarry fines, weathering, calcite, pedogenic carbonate, basaltic rock (weathering), dolerite ...
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Weathering of calcium-rich silicate rocks (e.g., basalt and dolerite) releases calcium, magnesium and iron; this process is associated with sequestration of …
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Samples of dunite, pyroxenite, olivine basalt and of a dolerite quarry waste material were previously subjected to ball milling to produce ultrafine powders with enhanced CO2 uptake.
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Weathering of calcium-rich silicate rocks (e.g., basalt and dolerite) releases calcium, magnesium and iron; this process is associated with sequestration of atmospheric CO2 and formation of ...
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Dolerite pounders are hand-held stone took that were widely used in Egypt from the third to late first millennium BCE for quarrying and dressing granite and other hard rocks. In addition to documenting the size distribution of 1,419 pounders from Aswan and describing red paint markings (owner labels, in part) found on about 4 percent of …
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stone. Early walls used dolerite from the hill; later walls, as this example, may use imported stone. Dolerite quarry: Inside of dolerite sill seen tilting to the west. It is a massive, hard, crystalline rock. igneous Prominent cracks, called joints, formed as rock shrank when the magma cooled. Commonly known as whin or whinstone,
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Dolerite is a type of igneous rock that forms through the cooling and solidification of magma. It is a dark-colored rock that typically contains plagioclase feldspar, pyroxene, and amphibole minerals. The name "dolerite" comes from the Greek words "dolos" meaning "poison" and "lithos" meaning "stone," due to its dark color and toxic …
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The algorithm aims to optimize the quarrying process by analyzing the impact of discontinuities on waste production and cutting surfaces. ... The algorithms used in the quarrying only focus on the ...
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We have obtained the initial data about extraction, selection, management, and use processes of the flint and dolerite assemblages. Deer antler remains have recently undergone a restoration ...
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Fire-setting also dates from the later Mesolithic, along with the use of hammerstones to obtain specific types of stone, such as rhyolite, dolerite, quartzite, and …
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DOLERITE POUNDERS: PETROLOGY, SOURCES AND USE by Adel Kelany James A. Harrell V. Max Brown ABSTRACT Dolerite pounders are hand-held stone tools that were widely used in Egypt from the third to late first millennium BCEfor quarrying and dressing granite and other hard rocks. In addition to documenting the size distribution of 1,419
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In this study, the calcium release and reusability of calcium-rich silicate quarry fines, dolerite, were investigated in closed (batch reactor) and open (permeability test) systems at liquid-to-solid (L/S) mass ratios 15 for MICP applications. The large specific surface area and reactive surface area accelerated calcium release, achieving ...
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Dolerite fines of large specific surface area originate from crushing and milling processes in quarries and often accumulate in landfill due to limited market options (Mitchell et al., 2008).
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(Eggleton et al., 1987). These factors stress the suitability of the fines-grained dolerite quarry fines to source for calcium via chemical weathering. This article evaluates the suitability of dolerite quarry fines as a source of calcium by investigating the dolerite quarry fines' weatherability in open and closed systems, to provide a
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Yellikaradu dolerite (Black Granite Quarry 1) Yellikaradu dolerite dyke is located very near Mettur. The rock is dark grey and medium-grained minerals of plagioclase and pyroxene minerals are identified with a hand lens. The dyke is situated in the Yellikaradu Reserved Forest that trends NW–SE (Fig. 5a). The mine is now actively run …
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Ancient Egyptian artisans were able to process various types of hard rock, especially granite, basalt, dolerite, porphyrite, and quartzite. The stones reached level …
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In this study, samples were collected from a dolerite sill intruding into the black shales of the Xiamaling Formation, located in the Tianshuigou village, Western Liaoning Province (GPS position: 41°16.16′ N, 119°35.24′ E) (Figs. 1 b; 2 a-b).The positions of all the samples are shown in Fig. 2 c. This dolerite sill is shallowly emplaced based …
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Techniques in Quarrying and Cutting. 1. Dolerite Pounders: The primary tools used in quarrying granite were dolerite pounders. These hard, ball-shaped stones were ideal for pounding the granite, creating a series of indentations. ... These marks indicate a gradual, methodical cutting process, supplemented by the use of abrasive …
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Weathering of calcium-rich silicate rocks (e.g. basalt and dolerite) releases calcium, magnesium and iron; this process is associated with sequestration of atmospheric CO2 and formation of pedogenic carbonates.
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The carbon isotopic signature indicated pedogenic carbonates (δ13Cav = −8.2 ± 5.0‰) formed when dolerite was applied and carbon originating from urea (δ13Cav = −46.4 ± 1.0‰) precipitated when CaCl2 was used. Dolerite fines had a large but short-lived (<2 d) carbon sequestration potential, and results indicated peak CO2 emissions ...
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The continuation of this process results in the slow, progressive movement of the falls upstream thus lengthening the gorge. ... Carbonate with quartz showing undulose extinction in hydrothermal deposits on dolerite at High Force Quarry. Section viewed with crossed polarising filters (FoV 2.3 x 1.5 mm) ...
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Diabase, also known as dolerite, is a type of igneous rock that holds significance in the field of geology due to its unique characteristics and formation …
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Dissolution experiments on dolerite quarry fines at low liquid-to-solid ratio: a source of calcium for MICP Casas, Carla C.; Schaschke, Carl J.; Akunna, Joseph C.; Jorat, M. Ehsan Published in: Environmental Geotechnics DOI: 10.1680/jenge.19.00067 Publication date: 2022 Document Version Author accepted manuscript Link to publication in ...
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