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Pseudo-cataclastic texture

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Journal Article
Published: 01 May 1934
American Mineralogist (1934) 19 (5): 185–193.
Journal Article
Published: 24 October 2022
Geological Magazine (2022) 159 (11-12): 2110–2131.
... dominant crystal–plastic deformation, whereas feldspars are commonly cataclastically deformed. Veins in sample SB006A show some textures that are similar to those in SB009, but are more altered and deformed, indicating significant cataclastic deformation. Hand specimen and microtextures suggest...
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Journal Article
Published: 01 November 2005
Scottish Journal of Geology (2005) 41 (2): 141–148.
... and gneisses and now forms the Lower Nappe of the Shetland Ophiolite Complex. The exposed pseudo-stratigraphic succession extends from several kilometres deep in the mantle, as exposed in the west, through the lower crust to the base of the sheeted dykes in the east, before passing beneath the sea; a surface...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 December 2007
AAPG Bulletin (2007) 91 (12): 1685–1700.
... of host rock plotted against that of deformation bands as measured from plugs drilled perpendicular to the bands. Most of the bands are cataclastic deformation bands. Our data, mostly from southern Utah, are separated into single bands, clusters, and dense clusters of deformation bands. Previously...
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Journal Article
Published: 01 March 1977
Journal of the Geological Society (1977) 133 (3): 191–213.
... in association with other geological structures (e.g. protoclastic textures arising from igneous intrusion). The term cataclastic rocks, introduced by Waters & Campbel l (1935) as a collective name for all rocks of the gouge--breccia- -cataclas i te- -mylonite kindred, is not used because of the misleading...
Journal Article
Journal: Geosphere
Published: 22 November 2017
Geosphere (2018) 14 (1): 187–214.
..., with the exception of weak undulatory extinction in quartz, which likely predates WSDF slip. Thus, these foliations also are low-temperature cataclastic textures, and we interpret them as S-foliations that record mainly flattening at the grain scale. Primary Reidel shears (R 1 ) are common in the SW-flank...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2007
GSA Bulletin (2007) 119 (1-2): 174–183.
..., which characterizes only the thinner veins; the mosaic texture of the thick veins may indicate that growth rate was unable to keep pace with fracture opening. Although the only clear, universally accepted fossil evidence of seismic slip are pseudo-tachylytes ( Cowan, 1999 ), we have known since...
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Journal Article
Published: 17 January 2018
Journal of the Geological Society (2018) 175 (3): 509–524.
... is an LS epithermal type. Classification as an LS epithermal system is based on the vein-ore textures, and predominant ore and gangue mineralogy. Although we have not identified adularia, a common mineral in low-sulphidation systems, pseudo-bladed quartz replacing bladed carbonate mineral is typical in LS...
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Journal Article
Journal: Geosphere
Published: 24 June 2019
Geosphere (2019) 15 (4): 1368–1392.
.... 3A and 3B ). The sample shown in Figures 3A and 3B exhibits textures typically seen over much of the intrusion; internal deformation appears to be minimal, with euhedral phenocrysts preserving crystallization textures (e.g., twinning and pseudo-oscillatory zoning in the plagioclases and cleavage...
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Journal Article
Published: 01 April 2019
Russ. Geol. Geophys. (2019) 60 (4): 435–446.
... . Lherzolites yielded a texturally complex population of zircon grains in terms of their shape, internal structure, transparency, and secondary transformations. This population is dominated by subhedral colorless zoned zircon grains whose textural characteristics suggest a magmatic origin. Among zircons from...
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Journal Article
Published: 26 April 2024
Russ. Geol. Geophys. (2024)
... polysynthetically twinned grains, and plagioclase grains with inclusions of quartz and plagioclase, are found in the quartz vein. The quartz veins of Berkutinskaya are finely medium-grained, of massive texture. Upon closer examination, it should be noted that quartz aggregates have a heterogeneous cataclastic...
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Journal Article
Published: 23 October 2018
The Canadian Mineralogist (2018) 56 (4): 657–687.
.... (1934) Pseudo-cataclastic texture of replacement origin in igneous rocks . American Mineralogist 19 , 185 – 193 . Bakker, R.J. (2012) Package FLUIDS. Part 4: thermodynamic modelling and purely empirical equations...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2011
GSA Bulletin (2011) 123 (11-12): 2115–2141.
... are overprinted by brittle to cataclastic deformation fabric elements characterized by microfractures, microfaults, and porphyroclastic textures ( Işik et al., 2003 ; Öner et al., 2010 ). The main ductile deformation structure is defined by the preferred alignment of elongated quartz grains, feldspar...
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Journal Article
Published: 01 January 2003
Journal of the Geological Society (2003) 160 (1): 15–27.
... in the aureole, probably effected via circulation of aqueous fluids confined to the metamorphic peak within the Main Ring Fault but extending to lower temperatures outside. Significant differences between cooling rate of rocks within and outside the Main Ring Fault are inferred from textural observations...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2015
GSA Bulletin (2015) 127 (11-12): 1689–1710.
... with respect to bedding in the host formations. The bottom boundary is provided by low-angle fault surfaces with large stratigraphic offset, associated with thin (centimeter-scale) dolomite cataclastic bands. With the exception of basal cataclastic bands, texture is homogeneous within the meter-scale...
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Journal Article
Published: 01 January 2007
Rocky Mountain Geology (2007) 42 (1): 31–56.
... belt brittle-plastic transition structural geology rheology faults mylonite ultramylonite pseudotachylyte 10 06 2007 24 10 2006 12 04 2007 Tweto (1974) mapped the HSZ as a braided system of 10–100-m-wide, subvertical ‘cataclastic gneiss’ zones. This composite map...
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Journal Article
Published: 01 February 2007
Petroleum Geoscience (2007) 13 (1): 25–35.
...-phase fault properties into simulation models is to apply pseudo-relative permeability functions representing properties of both reservoir and fault rocks in the upstream grid block ( Manzocchi et al . 2002 ). Another approach is to construct simple models in which capillary pressure and relative...
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Journal Article
Published: 01 January 2011
American Mineralogist (2011) 96 (1): 81–88.
..., 405 –410. Flörke, O.W. and Langer, K. ( 1972 ) Hydrothermal recrystallization and transformation of tridymite. Contributions to Mineralogy and Petrology , 36 , 221 –230. Fowler, A.D. ( 1990 ) Self-organized mineral textures of igneous rocks: The fractal approach. Earth-Science Reviews , 29...
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Journal Article
Journal: GSA Bulletin
Published: 31 December 2019
GSA Bulletin (2020) 132 (9-10): 1817–1828.
...-plastic transition (e.g., Fig. 1A ), forming metamorphic core complexes. In these structures, shear- and fault-zone rocks form progressively during footwall exhumation, and crystal-plastic mylonites are overprinted by frictional-cataclastic textures (e.g., Davis et al., 1986 ; Davis, 1988 ). Removal...
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Journal Article
Published: 01 May 2017
The Canadian Mineralogist (2017) 55 (3): 501–514.
... mineral assemblage might be substantially altered, and therefore this process has a severe negative impact on the economic potential of mineral resources. Although these replacement textures are often reported and have a significant economic importance in mines producing baryte or fluorite of chemical...
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