detrital deposits

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• Channel-iron deposits — (CID) are iron rich fluvial sedimentary deposits of possible Miocene age occupying meandering palaeochannels in the Early to Mid Tertiary Hamerlsey palaeosurface of Western Australia. Examples are also known from Kazakhstan. The deposits are… …   Wikipedia

• zircon — /zerr kon/, n. a common mineral, zirconium silicate, ZrSiO4, occurring in small tetragonal crystals or grains of various colors, usually opaque: used as a refractory when opaque and as a gem when transparent. [1785 95; < G Zirkon; see JARGON2] *… …   Universalium

• Devonian Period — Interval of geologic time from 417 to 354 million years ago; it was the fourth period of the Paleozoic Era. During the Devonian, a giant continent was situated in the Southern Hemisphere (see Gondwana), and other landmasses were located in the… …   Universalium

• Yoredale Series — The Yoredale Series, in geology, is a local phase of the lower Carboniferous rocks of the north of England. The name was introduced by J. Phillips on account of the typical development of the phase in Yoredale (Wensleydale), Yorkshire. Properties …   Wikipedia

• anatase — /an euh tays , tayz /, n. Mineral. a naturally occurring crystalline form of titanium dioxide, TiO2. Also called octahedrite. [1835 45; < F < Gk anátasis, equiv. to ana ANA + ta (var. s. of teínein to stretch) + sis SIS] * * * ▪ mineral       one …   Universalium

• beryl — beryline /ber euh lin, luyn /, adj. /ber euhl/, n. a mineral, beryllium aluminum silicate, Be3Al2Si6O18, usually green, but also blue, rose, white, and golden, and both opaque and transparent, the latter variety including the gems emerald and… …   Universalium

• Beryl — /ber il/, n. a female given name. * * * Mineral composed of beryllium aluminum silicate, Be3Al2(SiO3)6, a commercial source of beryllium. Several varieties are valued as gemstones: aquamarine (pale blue green); emerald (deep green); heliodor… …   Universalium

• Dermotherium — Temporal range: Late Eocene – Late Oligocene Scientific classification Kingdom: Animalia Phylum: Chordata Class …   Wikipedia

• William Branwhite Clarke — William Branwhite Clarke, FRS (2 June 1798 – 16 June 1878) was an English geologist and clergyman, active in Australia.Early life and EnglandClarke was born at East Bergholt, in Suffolk, the eldest child of William Clarke, schoolmaster, and his… …   Wikipedia

• euxenite — /yoohk seuh nuyt /, n. a rare, brownish black mineral of complex composition, an oxide of calcium, cerium, yttrium, columbium, titanium, and uranium. [1840 45; < Gk eúxen(os) kind to strangers, hospitable (see EU , XENO ) + ITE1] * * * ▪ mineral… …   Universalium

• rutile — /rooh teel, tuyl/, n. a common mineral, titanium dioxide, TiO2, usually reddish brown in color with a brilliant metallic or adamantine luster, occurring in crystals: used to coat welding rods. [1795 1805; < F < G Rutil < L rutilus RED1] * * *… …   Universalium