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• Carbonate
  ...M, XRD, CL, and XF methods|X-Ray Diffractometry]]. Carbonates more rich in calcite and/or aragonite are called [[limestone]]. Carbonate rocks composed mainly
  708 bytes (95 words) - 20:42, 7 July 2016
• Calcareous microfossils
  Calcareous microfossils have shells composed of calcite or aragonite. These organisms are present in most marine and in some nonmar ...ifera are a group of unicellular organisms (protists) that secrete a rigid calcite or aragonite shell (or test). Fossils of these forms are found in sediments
  5 KB (673 words) - 15:16, 31 January 2022
• Reservoir system quality prediction
  ...te]], [[clay]], and [[anhydrite]], etc. || [[Aragonite]], high- and low-Mg calcite, dolomite
  3 KB (425 words) - 17:11, 5 April 2022
• Early carbonate diagenesis
  ...with other factors result in precipitation of aragonite or magnesium (Mg) calcite. ...ss of whether it is marine, brackish, or fresh and tend to alter to low-Mg calcite because most water is magnesium deficient. Their common form is isopachous
  10 KB (1,352 words) - 19:07, 6 April 2022
• Influence of depositional environment on sandstone diagenesis
  ...areas that were alternately moist and dry [[anhydrite]], [[dolomite]], or calcite common | Calcite at base, grading up into calcite plus quartz, quartz plus clay minerals, and clays plus minor carbonate
  8 KB (1,129 words) - 14:11, 6 April 2022
• Petrofabrics
  * Burkhard, M., 1993, Calcite twins, their geometry, appearance and significance as stressstrain markers ...edman, M., Stearns, D., W., 1971, Relations between stresses inferred from calcite twin lamellae and macrofractures, Teton anticline, Montana: Geological Soci
  4 KB (447 words) - 15:17, 3 February 2022
• Critical elements application: Niobrara example
  * [[Open calcite crystals]] lining the fractures ...ritical elements of fieldwork|field work]] has shown that the same kind of calcite present in subsurface fractures within the Niobrara also occurs in fracture
  7 KB (962 words) - 16:03, 18 February 2022
• Pressure prediction: analysis of cuttings
  ...compartments are usually cemented by calcite. When unexpected pore-filling calcite is seen, a pressure seal should be considered a possibility. Any unusual po
  5 KB (818 words) - 17:56, 17 February 2022
• Sequences during low-amplitude, high-frequency cycles
  * Sulfate minerals plugging the pores in grainstones (calcite plugging rarely significant but hard to leach if present) * Fibrous marine and vadose–phreatic sparry calcite cements plugging fenestral porosity
  5 KB (708 words) - 21:00, 6 April 2022
• Carbonate sedimentary rocks classification
  * Sparry calcite cement (sparite): pore-filling component precipitated during deposition. ...parry allochemical limestone that consists of allochems cemented by sparry calcite cement.[b]
  16 KB (1,986 words) - 14:09, 19 December 2023
• Thin section analysis
  ...in calcite. Note that no petroleum inclusions were found in gas-stage TSR calcite, well D4, 4793.00 m (15,721.04 ft).<ref name=Jiangetal_2014>Jiang, Lei, Ric ...objectives of the petrographic analysis. Common stains are available for [[calcite]], [[dolomite]], [[ferrous carbonate]], [[K-feldspar]], and [[plagioclase]]
  24 KB (3,264 words) - 15:09, 24 January 2022
• Subsurface diagenesis and its relation with diagenetic trap on carbonate rocks reservoir
  ...pend on the composition of water and the equilibrium of every minerals. If calcite is formed, usually the shape is big. ...hydrocarbons in the stratigraphic trap as a result of loss updip porosity. Calcite cementation happened to overburden contact oil / water. (B) With folding co
  16 KB (2,395 words) - 21:18, 9 January 2024
• Geochemical surface expression
  * Mineralogical changes such as the formation of calcite, pyrite, uranium, elemental sulfur, and certain magnetic iron oxides and su
  4 KB (493 words) - 22:00, 31 January 2022
• Siliceous microfossils
  ...rystallized, preserved in nodules or concretions, or replaced by pyrite or calcite.
  5 KB (626 words) - 15:18, 31 January 2022
• Pore system shapes
  | Grain coating or pore filling by [[calcite]], [[silica]], or [[dolomite]]
  4 KB (528 words) - 13:53, 4 April 2022
• Diagenetic traps: criteria for recognition
  ...oan [http://encyclopedia2.thefreedictionary.com/poikilotopic poikilotopic] calcite, and [[anhydrite]]
  5 KB (611 words) - 21:06, 4 February 2022
• Dolomite
  ...olomite is either metastable or unstable with respect to a mixture of pure calcite plus pure dolomite. The same thing is true with respect to ideal dolomite p
  9 KB (1,409 words) - 19:14, 3 March 2016
• Regional pressure compartments
  ...ts across stratigraphic units. It forms where authigenic minerals (usually calcite) fill the pore spaces. The '''bottom seal''' of regional compartments is us
  6 KB (811 words) - 17:58, 17 February 2022
• Sequences during moderate-amplitude, high-frequency cycles
  * Vadose and upper phreatic sparry calcite cement often plugs primary and secondary porosity in the upper parts of seq
  5 KB (674 words) - 21:22, 6 April 2022
• Carbonate diagenetic stages
  ...ess. [[Porosity]] obliteration occurs when mosaics of coarsely crystalline calcite precipitate in large pores. Pressure solution occurs at higher pressures.
  6 KB (727 words) - 19:06, 6 April 2022

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