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neomorphism

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Journal Article
Published: 15 June 2007
Canadian Journal of Earth Sciences (2007) 44 (5): 695-705.
... se mêlant à divers rapports mineurs d’eau de formation. Cette recherche fournit une étude de cas dans laquelle le néomorphisme du calcaire est relié à l’eau de déshydratation du gypse. [Traduit par la Rédaction] The term neomorphism was introduced by Folk ( 1965 ) to refer to processes...
FIGURES | View All (9)
Series: SEPM Special Publication
Published: 01 January 2003
DOI: 10.2110/pec.03.78.0395
EISBN: 9781565763340
...%) part of the dolomite is characterized by nonplanar texture. Petrographic evidence for fabric-preserving neomorphism of mimetic replacement planar dolomite is the preservation of concentric ooid textures and planar dolomite zonation (in plane-polarized light) retained within mosaics of mainly planar...
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Journal Article
Published: 01 January 2000
Journal of Sedimentary Research (2000) 70 (1): 265-274.
.... Ferroan dolomite has relatively low δ 18 O values (−5.1 to −7.3‰ PDB) and has slightly radiogenic 87 Sr/ 86 Sr ratios (0.70915 to 0.70969) similar to those obtained for the overlying Maquoketa Shale. These data indicate that ferroan dolomite formed by neomorphism of nonferroan planar dolomite as fluids...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 1997
AAPG Bulletin (1997) 81 (6): 954-977.
...Scott Durocher; Ihsan S. Al-Aasm ABSTRACT Petrographic, chemical, and isotopic studies of the Mississippian (Visean) upper Debolt Formation in the Blueberry field, British Columbia, Canada, reveal that dolomitization was the result of several diagenetic events and that neomorphic alteration...
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Journal Article
Published: 02 January 1995
Journal of Sedimentary Research (1995) 65 (1a): 214-224.
...James P. Hendry; Peter W. Ditchfield; James D. Marshall Abstract Aragonitic bivalves in Middle Jurassic paralic limestones from Lincolnshire (Eastern England) have been neomorphically replaced by inclusion-rich calcite spar. Textural features of neomorphic spar are analogous to examples from other...
Journal Article
Published: 01 July 1990
Journal of Sedimentary Research (1990) 60 (4): 549-562.
..., basinal fluids. These data indicate that the back reef facies was subjected to a complex diagenetic history involving both early and late diagenetic dolomitization and dolomite neomorphism. Fine crystalline, planar dolomite was formed during early diagenetic dolomitization of the cryptalgalaminate...
Journal Article
Published: 01 March 1986
Journal of Sedimentary Research (1986) 56 (2): 194-203.
...Gale D. Martin; Bruce H. Wilkinson; Kyger C. Lohmann Abstract The neomorphism of aragonite to calcite involves complex textural and chemical alterations that are in part controlled by the degree of communication between diagenetic and ambient formation fluids. Two taxa, Montastrea annularis...
Series: AAPG Memoir
Published: 01 January 1978
DOI: 10.1306/M27394C27
EISBN: 9781629811994
Journal Article
Published: 01 June 1967
Journal of Sedimentary Research (1967) 37 (2): 688-690.
...S. K. Chanda Abstract In microcrystalline allochemical limestones and biolithites, sharp fabric discontinuities or boundaries may be anticipated as a result of an aggrading neomorphism. Such discontinuities are commonly caused by structural discontinuities in the initial fabric, that is, boundaries...
Series: SEPM Special Publication
Published: 01 January 1965
DOI: 10.2110/pec.65.07.0014
EISBN: 9781565761438
... Abstract Conditions and criteria for “grain growth” in metals are not followed in diagenesis of most sedimentary carbonates; thus the concept should not supersede “recrystallization” as first documented by H. C. Sorby for both petrographers and metallographers. An inclusive term, “Neomorphism...
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1964
AAPG Bulletin (1964) 48 (4): 525.
...Robert L. Folk Conditions and criteria for “grain growth” in metals are not followed in diagenesis of most sedimentary carbonates; thus the concept should not supersede “recrystallization” as first documented by H. C. Sorby for both petrographers and metallographers. An inclusive term, “neomorphism...
Journal Article
Published: 01 April 2009
Journal of Sedimentary Research (2009) 79 (4): 226-246.
... material resulting from collapse of dissolved shells. Specifically, five types of aragonite preservation are evident: (a) skeletons with original aragonite; (b) skeletons with original aragonite but with leaching cavities; (c) skeletons with aragonite relics encased in either dirty or pale brown neomorphic...
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Journal Article
Published: 01 September 1984
Journal of Sedimentary Research (1984) 54 (3): 908-931.
... to neomorphic limestone textures. Idiotopic dolomite texture (euhedral to subhedral crystals with straight, intercrystalline boundaries) contrasts with xenotopic texture and is commonly observed in both Cenozoic and more ancient dolomites. Texture may be controlled by the temperature at which crystals grow...
Image
Sketch diagram showing that <b>neomorphism</b> of the Ratner limestone is interpre...
Published: 15 June 2007
Fig. 9. Sketch diagram showing that neomorphism of the Ratner limestone is interpreted to be related to gypsum-dehydration water. Dehydration water from the thick Whitkow sulfate beds could be squeezed into the underlying Ratner carbonate rocks because the overlying Prairie Evaporite halite
Image
Glauconite and Pyrite, and Porosity.  7.1: <b>Neomorphism</b> within the matrix (s...
in > GeoArabia
Published: 01 April 2007
Plate 7: Glauconite and Pyrite, and Porosity. 7.1: Neomorphism within the matrix (stained) with plotches of pyrite, well Bai Hassan-81 (1,425.2 m), Mushorah Formation, sequence C3, X37. 7.2: Framboidal glauconite, well Quwair-2 (993–994 m), Mushorah Formation, sequence C3, X38. 7.3: High
Image
—Solution and <b>neomorphism</b> in freshwater phreatic zone.  A , Solution of ara...
Published: 01 April 1980
Fig. 15 —Solution and neomorphism in freshwater phreatic zone. A , Solution of aragonitic oolites following cementation by equant calcite in active freshwater phreatic zone. Sample from Pleistocene Miami Oolite, south Florida. B , Aragonite needles in oolite being replaced by blocky equant
Image
—Dolomitization through porphyroid <b>neomorphism</b> at very early stage of devel...
Published: 01 April 1977
Fig. 12 —Dolomitization through porphyroid neomorphism at very early stage of development. Few, incompletely formed, dolomite rhombs are present (X-nicols).
Image
—Dolomitization through aggrading coalescive <b>neomorphism</b>.
Published: 01 April 1977
Fig. 13 —Dolomitization through aggrading coalescive neomorphism.
Image
— In situ  <b>neomorphism</b> of gastropod. Note difference of this rather classic...
Published: 01 June 1974
FIG. 17 — In situ neomorphism of gastropod. Note difference of this rather classic recrystallization fabric (see Folk, 1965 ) with fabric which results from microspar precipitation into moldic pore space in Figure 14 . Thin-section photomicrograph, plane light; 17-64.
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2404(25)
... Cave, and Chilsong Cave) have been partially calcitized. The neomorphic calcite crystals vary in size from tens of microns to a few millimeters. Numerous relic aragonite crystals and relic growth lines are present within the neomorphic calcites. Original calcite speleothems (i.e., initially deposited...