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• Quartz
  | chapter = Grains: Quartz and Silica [[file:M109Quartz300dpi.jpg|300px|thumb|Quartz crystals with adularia (orthoclase) from Dona Ana Co., New Mexico. Photogra
  8 KB (1,127 words) - 20:21, 23 January 2019

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• Quartz
  | chapter = Grains: Quartz and Silica [[file:M109Quartz300dpi.jpg|300px|thumb|Quartz crystals with adularia (orthoclase) from Dona Ana Co., New Mexico. Photogra
  8 KB (1,127 words) - 20:21, 23 January 2019
• Methods for obtaining formation fluid pressures
  ...or the test. Generally two types of gauges measure pressures: strain and [[quartz]]. The table below shows the accuracy and precision of both types. | Quartz Gauge
  2 KB (295 words) - 17:54, 17 February 2022
• Pore systems
  *[[Quartz]]- or carbonate-cemented coarse sandstone *Quartz- or carbonate-cemented fine to medium sandstone
  3 KB (442 words) - 13:52, 4 April 2022
• Sandstone provenance and characterization
  ...by its composition, in Folk and Dott Clasification, we have to know about quartz, feldspar, and rock fragments that compose the sandstone. When we figure it ...more. Based on grain mineralogy, sandstones are divided into three groups: Quartz arenite, feldspathic arenite, dan lithic arenite.
  10 KB (1,524 words) - 15:29, 14 March 2016
• Sandstone diagenesis: composition and texture
  * The higher the [[quartz]] content, the greater the mechanical stability (less compaction occurs). ...secondary porosity through dissolution of less stable grains. The ratio of quartz to [[Ductility|ductile]] grains is key to compaction porosity loss.
  5 KB (729 words) - 20:48, 5 April 2022
• Influence of depositional environment on sandstone diagenesis
  ...gments. Prodelta sands, deposited in a more distal setting, contain fine [[quartz]], micas, and detrital clays that are products of disaggregation. Reworked ...tation. Clay minerals form first because they precipitate more easily than quartz and feldspar overgrowths, which require more ordered crystal growth. Carbon
  8 KB (1,129 words) - 14:11, 6 April 2022
• China Shale Gas & Liquids - Sichuan Basin
  ...res during gas window stage. These organic pores can be preserved by rigid quartz framework during late tectonic movements (Guo et al., 2020). In summary, fo ...ervation conditions. In summary, the combination of high TOC content, high quartz content, high porosity and good gas preservation conditions are fundamental
  7 KB (985 words) - 18:54, 4 December 2023
• Sandstone
  ...of mixtures o a very small number of dominant framework components, like [[quartz]], feldspars, and rock fragments are commonly abundant enough to be importa ===Quartz Arenites===
  10 KB (1,508 words) - 15:44, 22 March 2019
• Sandstone permeability prediction from texture
  ==Effect of [[quartz]] overgrowths== ...te low (<5%) and still have some permeability (<10 md) where cemented with quartz. (See also [[Connectivity and pore throat size]].)
  9 KB (1,118 words) - 17:03, 6 April 2022
• Sandstone diagenetic processes
  * Ferroan carbonate and [[quartz]] cement * Quartz cement (most destructive)
  7 KB (870 words) - 20:30, 5 April 2022
• Predicting sandstone reservoir porosity
  ...Formations on the left side of the plot, like the Vicksburg, tend to be [[quartz]] cemented. Formations on the right side, like the Frio (areas 4-6). tend t * Percentage of [[quartz]] grains
  10 KB (1,384 words) - 15:00, 6 April 2022
• Diagenesis: information from petrology
  ...land) contain fluorescing oil inclusions trapped before the formation of [[quartz]] cements, which degraded the reservoir's quality. From Rick Tobin, unpubli ...land) contain fluorescing oil inclusions trapped before the formation of [[quartz]] cements, which degraded the reservoir's quality. Oil traps could occur [[
  4 KB (544 words) - 21:38, 4 February 2022
• Hydrology and sandstone diagenesis
  ...mical systems close and diagenesis is primarily by pressure solution and [[quartz]] overgrowths.<ref name=ch09r66>Wilson, M. D., 1994a, Non-compositional con | [[Quartz]]
  6 KB (787 words) - 13:43, 6 April 2022
• Reservoir system quality prediction
  | Cement mineralogy || [[Quartz]], [[calcite]], [[dolomite]], [[clay]], and [[anhydrite]], etc. || [[Aragon
  3 KB (425 words) - 17:11, 5 April 2022
• SEM, XRD, CL, and XF methods
  ...chert]]) or polymineral grains (such as granite from separate feldspar and quartz). ...ttice defect structures in [[quartz]] are also thought to cause some CL in quartz.
  11 KB (1,477 words) - 15:25, 24 January 2022
• Botucatu Formation
  ...aeolian sand sheet deposits. It consists mainly of fine to medium-grained quartz sandstones, of red, pink or pale yellow color, well sorted, texturally matu
  3 KB (432 words) - 17:54, 22 March 2019
• Scanning electron microscopy (SEM)
  ...ndicate higher grade metamorphism (phyllite-schist). (b) Detail of a large quartz grain in center of image (arrow) displays multiple generations of growth in ...thodoluminescence can also be used to differentiate between generations of quartz growth that are not distinguishable in SEM due to identical mean atomic num
  16 KB (2,441 words) - 20:24, 23 January 2019
• Hydrodynamic flow and pressure transients
  ...[[North Sea]].<ref name=ch10r64>Robinson, A., J. Gluyas, 1992, Duration of quartz cementation in sandstones, North Sea and Haltenbanken basins: Marine and Pe
  4 KB (477 words) - 14:34, 1 April 2022
• Petrofabrics
  * Onasch, C., M., 1990, Microfractures and their role in deformation of a quartz arenite from the central Appalachian foreland: Journal of Structural Geolog
  4 KB (447 words) - 15:17, 3 February 2022
• Pore and pore throat sizes
  ...systems]] (see [[Reservoir quality]]). Disparate Archie rock types such as quartz-cemented sandstones, [[Bioturbation|bioturbated]] sandstones, and sucrosic
  4 KB (516 words) - 14:04, 4 April 2022

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