siliceous


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siliceous

[sə′lish·əs]
(petrology)
Describing a rock containing abundant silica, especially free silica.
References in periodicals archive ?
reniformis as it relates to the engulfed siliceous particles; taking a molecular approach, we identified and cloned the full-length cDNA that encodes the sponge aquaporin CrAQP, whose transcript level was assayed in the ectosome and choanosome of C.
Losses over highly or extremely siliceous parent materials in warmer climates under grazing land uses are < 1 t/ha, or 4%.
The middle of the sequence (Miocene) is similar to the previous one but it contains siliceous microfossils and a higher content of carbonate.
On the basis of physical and chemical characteristics, the Limestone has been classified as High grade limestone (HLS), Darukhula limestone (DLS) and Siliceous limestone (SLS).
8220;My new scrub is full of siliceous earth, straight from the floors of the dead sea.
Specimens from Madrid were richer and were collected on algal films on the top of siliceous boulders, overgrowing bryophytes and unidentified Cladonia squamules; other lichen species growing on the top of these boulders and within bryophytes were Polychidium muscicola and Massalongia carnosa.
It operates a granite and three limestone quarries and three siliceous aggregates sites.
and "The use of siliceous minerals in silicone and FKM elastomers," Julian Danvers, World Minerals, France.
Roofbolters drill holes into the roof of mine passageways, often through siliceous rock, and insert bolts to prevent rock falls.
This author's field research in 1986 (described in books, Environment of Violence and Expanding Geospheres (2,3)) had led him to the Gros Brukkaros crater, a 3-km diameter caldera with siliceous breccia walls situated on a welt on the crystalline South African shield in Namibia.
ABSTRACT Field studies were conducted to compare quartzitic sandstone to siliceous limestone in its ability to collect oyster spat, and to determine if sandstone is a suitable cultch for oysters.
Removing some of the siliceous melt near the top of the magma chamber removes incompatible elements from the uppermost tephras because the siliceous melt is rich in incompatible elements.