ocellus
ocellus A simple eye occurring in insects and other invertebrates. It typically consists of light-sensitive cells and a single cuticular lens.
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Rhyolite, queen of the desert. (gold mining town in Amargosa Desert, Nevada)(Western Wanderings)
Magazine article from: Sunset; 3/1/1995; ; 700+ words
; ...They built to last," Claudia said. "Rhyolite was going to be the queen city of the...dreamed of becoming queen cities. But Rhyolite gave it a better go than most. The name...confidence in every breast." Thus crowed the Rhyolite Herald in 1905, as the Bull-frog and...
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U-Pb zircon (SHRIMP) ages for the Lebombo rhyolites, South Africa: refining the duration of Karoo volcanism
Magazine article from: Journal of the Geological Society; 7/1/2004; ; 700+ words
; ...interbedded rhyolites yield ages...Jozini Formation rhyolite yields an age...A further rhyolite crops out further...voluminous Lebombo rhyolites, which are...interbedded with rare rhyolite lava flows...majority of the rhyolites are porphyritic...
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Crustal contribution to the genesis of Ethiopian plateau rhyolitic ignimbrites: Basalt and rhyolite geochemical provinciality
Magazine article from: Journal of the Geological Society; 1/1/2003; ; 700+ words
; ...for Wegel Tena rhyolite sequences...emplacement of the rhyolites. Lima Limo...of basalt and rhyolite provinciality suggests that the rhyolites are related...of basalt and rhyolite provinciality suggests that the rhyolites were derived...
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Nevada's elegant ghost: Rhyolite.(Brief Article)
Magazine article from: Sunset; 2/1/2000; ; 662 words
; ...Las Vegas-Tonopah Railroad Depot in Rhyolite, Nevada, swept across a mining town...numerous hotels that had blossomed since Rhyolite's 1904 gold strike. But by the time the depot opened in 1908, Rhyolite was already dying, as mining economics...
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Geochemistry of adakites and rhyolites from the Neoarchaean Gadwal greenstone belt, eastern Dharwar craton, India: implications for sources and geodynamic setting.
Magazine article from: Canadian Journal of Earth Sciences; 11/1/2007; ; 700+ words
; ...interpreted to be slab melts. Rhyolites have greater Si[O.sub...are comparable to FI type rhyolites of other Archean greenstone...Nb-enriched basalt, and rhyolites in the Gadwal terrane signifies...volcaniques d'adakite et de rhyolite ayant differentes caracteristiques...
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Rhyolite Sampling Yields 18.5 g/t Gold and 430 g/t Silver at Delta Project, Alaska.
News Wire article from: Canadian Corporate News; 3/19/2007; 700+ words
; ...Mar 19, 2007 (CCNMatthews via COMTEX) -- Rhyolite Resources Ltd. ( Rhyolite ) (TSX VENTURE:RYE) is pleased to announce...300 metres south of the Super Cub Kill zone. Rhyolite's re-examination of prior operator's drill...
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Rhyolite Sampling Yields 18.5 g/t Gold and 430 g/t Silver at Delta Project, Alaska
Newspaper article from: CCNMatthews Newswire; 3/19/2007; 700+ words
; ...COLUMBIA--(CCNMatthews - March 19, 2007) - Rhyolite Resources Ltd. ("Rhyolite") (TSX VENTURE:RYE) is pleased to announce...300 metres south of the Super Cub Kill zone. Rhyolite's re-examination of prior operator's drill...
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Rhyolite Mobilizes Drill to Delta Project, Alaska.
News Wire article from: Canadian Corporate News; 9/10/2007; 700+ words
; ...10, 2007 (CCNMatthews via COMTEX) -- Rhyolite Resources Ltd. (TSX VENTURE:RYE) ( Rhyolite ) and Grayd Resource Corporation (TSX VENTURE...seven deposits. Through its US subsidiary, Rhyolite Resources (USA) Inc., Rhyolite can earn...
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Volcanic rocks in the Devonian Solund Basin, Western Norway: Large landslides of Silurian (439 Ma) rhyolites
Magazine article from: Journal of the Geological Society; 3/1/2002; ; 700+ words
; ...crystallization of the rhyolite, and are thus too old...sup 2^ landslide of rhyolite, granite, gabbro and...Norway, landslides The rhyolites in the Devonian Solund...Precise dating of the rhyolite combined with field...relative age of the rhyolites versus the age of the...
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Gold Exploration Company USCorp Releases Results of Geophysicist Report of Pink Rhyolite on Picacho Salton Property Valued at $634,000,000 USD.
Business Wire; 1/31/2008; 700+ words
; ...Geological Support Services report of Pink Rhyolite on a portion of its Picacho Salton Property...and they also include 140 acres of Pink Rhyolite (decorative rock) and construction...Support Services report, estimates of Pink Rhyolite and construction grade aggregate reserves...
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Rhyolite
Book article from: World of Earth Science
Rhyolite Rhyolite is an aphanitic volcanic rock with the equivalent mineralogical composition of granite . Rhyolite contains less than 5% phenocrysts, or mineral grains visible without...
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rhyolite
Book article from: The Columbia Encyclopedia, Sixth Edition
...amphiboles, and pyroxenes. Rhyolite lava exhibits a typical banded...produced by its flow pattern. Rhyolite lavas occur in continental...arcs, and in igneous dikes. Rhyolite lavas are typically highly...explosively ejected from volcanoes. Rhyolites were formed in profusion in...
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Fenner, Clarence Norman
Dictionary entry from: Complete Dictionary of Scientific Biography
...between the end members andesite and rhyolite. On a much later occasion he agreed...also apparent in his study (1938) of a rhyolite flow that he described as following a...mobilized, according to Fenner, by the rhyolite magma, and the compositions of the resulting...
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viscosity
Book article from: A Dictionary of Earth Sciences
...can be very high, especially if the silica content is high as in rhyolite magmas, and a yield strength must be overcome before the magma can...reduces it. In general, basaltic magmas have lower viscosities than rhyolite magmas.
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felsite
Book article from: A Dictionary of Earth Sciences
felsite A very light-coloured, aphanitic igneous rock , with or without phenocrysts present. The term is used in the field as an initial classification and can refer to devitrified rhyolite glass ( obsidian ), or primary, cryptocrystalline rhyolite.
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