schistose


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Related to schistose: gneissose

schistose

[′shis‚tōs]
(geology)
Pertaining to rocks exhibiting schistosity.
References in periodicals archive ?
5%) is expectedly much lower and also lower than those of the average values of schistose amphibolites of Nigeria (Ajayi, 1980; Elueze, 1985; Elueze and Okunlola, 2003b).
Schistose Quartz: Schistose quartz is also known as "Injected metamorphic quartz" (Krynine, 1950).
This zone is characterized by compressed drag-folds in shuffled packets of sheared and schistose rocks, in which any semblance of stratigraphic continuity has been largely obliterated; as a result, the deformed contact is possibly best characterized as a zone of 'broken formation'.
2), felsic tufts contain lenses of quartz and carbonate, hosting disseminated zinc and copper sulphides along with traces of gold, within schistose zones demonstrating intense drag-folding (Rose and Johnson 1990; Merlini 1998).
The Tankoro Structural Corridor is defined by schistose rocks and gold-in-soil anomalism extending over 20km in length along a north-northeast trend.
2 lens and concluded that they "have developed through mineralization and silicification of schistose zones in the altered porphyrite or greenstone near its contact with the argillites".
The basalt is light green-grey, mildly schistose, medium- and fine-grained, and aphyric, from 50 to 80 m thick (if it is monoclinal and dips 60 degrees), and extends for about 5 km along strike.
The altered and deformed host appears to be a gneissic to schistose intermediate to felsic intrusive but some deformed meta-volcanics are also present.
This new mineralization is hosted within schistose phyllonite zones (gray rock) containing little or no vein quartz.
Within schistose units, they consist of a number of slips and fractures carrying gouge and breccia and rarely exceed 0.
Blue-green amphibole is particularly well developed in the schistose dykes in which the effects of any early metamorphism have been obliterated; plagioclase grains are generally recrystallized and clear or have clear rims with abundant new-growth hornblende [+ or -] quartz in the matrix.