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Sep 15, 2023 · Flint, sometimes interchangeably referred to as chert, is a type of cryptocrystalline or microcrystalline quartz that typically forms in sedimentary rocks. It is known for its conchoidal fracture, which means it breaks with smooth, curved surfaces, creating sharp edges.
Jul 17, 2020 · In the modern era flint remains a material of concern in engineering causing damage to core-drilling operations, tunnelling machines (Fig. 8) and cable trenching machines onshore and offshore northwest Europe. Flint also impacts the ease with which piles can be driven into chalk.
Mar 24, 2017 · Microtexture and mineral composition of flints are studied to understand how the geological and petrophysical properties of the flint affect drilling responses to the rock and investigate any spatial variation. The flints are categorized based on physical observation into white crust and light brownish grey, dark brownish grey and grey flints.
The Flint district, situated between the Denbigh Moors to the west and the Cheshire plain to the east, is an area of marked physical and economic contrasts which reflect a diverse geology (Figure 1). It lies largely in the former county of Clwyd (now parts of Denbighshire, Flintshire and Wrexham County Borough) and partly in Cheshire.
Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, [1] [2] categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires. Flint occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones.
The relationships between flint strength, deformation properties, 101 morphology, microtexture and colour are described with the aim of providing useful guidance 102 for engineers and geoscientists at the desk study stage of a ground investigation. A 103 classification of flints based on colour is proposed.
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Jan 16, 2017 · The petrographic and mechanical properties of flints from the Burnham (North Landing, Yorkshire, UK), Seaford (East Sussex, UK, and Dieppe, France), and Lewes Nodular (Mesnil-Val-Plage, France)...
