Tachylite (/ˈtækəlaɪt/ TAK-ə-lyte; also spelled tachylyte) is a form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of...
9 KB (1,315 words) - 21:51, 6 February 2024
further illustrated by the two forms of basaltic glass, tachylite and sideromelane. Tachylite is opaque to transmitted light because of the abundance...
6 KB (716 words) - 17:52, 17 July 2023
often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). Diabase is the preferred name in North America, while...
15 KB (1,677 words) - 14:56, 7 August 2024
kalsititic rocks Taconite – Variety of iron-bearing sedimentary rock Tachylite – Form of basaltic volcanic glass Teschenite – Type of igneous rock –...
14 KB (2,187 words) - 23:33, 16 April 2024
Tachylite is an unusual and relatively rare stone used in making flaked stone tools, and which is found in Aboriginal archaeological sites in Victoria...
6 KB (663 words) - 11:25, 12 May 2023
palagonite tuff, for which it is characteristic. It is a less common form of tachylite, with which it usually occurs together; however it lacks the iron oxide...
2 KB (241 words) - 10:26, 3 February 2024
lacking the iron oxide crystals dispersed in the more commonly occurring tachylite. Fragments of these glasses are usually surrounded by a yellow waxy layer...
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volcanic ash Hyaloclastite – Volcaniclastic accumulation or breccia and tachylite – volcanic glasses with basaltic composition Knapping – Shaping of conchoidal...
35 KB (3,667 words) - 19:14, 17 August 2024
phenocrysts had started to form prior to eruption. Obsidian Poikilitic texture Tachylite Best, Myron G. (2002). Igneous and Metamorphic Petrology. Blackwell Publishing...
1 KB (127 words) - 21:43, 5 January 2024
Mangerite Novaculite Pietersite Pyrolite Rapakivi granite Rhomb porphyry Rodingite Shonkinite Taconite Tachylite Teschenite Theralite Unakite Variolite Wad...
7 KB (562 words) - 05:01, 17 August 2024
within aphanitic, mafic igneous rocks, such as basalt, komatiite, and tachylite, that comprise either pillow lavas, subaerial lava flows, or volcanic...
8 KB (1,036 words) - 16:52, 12 October 2019
of central and northern Europe: he wrote on gypsum, pyrites, felspar, tachylite, cordierite and on some eruptive rocks, and devoted much attention to...
4 KB (368 words) - 02:04, 8 June 2024
variety of pyroclasts from irregular sideromelane droplets to blocky tachylite (black to dark brown microcrystalline pyroclasts). In contrast, most high-silica...
81 KB (9,833 words) - 01:44, 13 August 2024
because of their rich hunting grounds but because from their area came tachylite, a hard glassy volcanic stone valued for weapons and tools Early Europeans...
57 KB (6,079 words) - 06:24, 13 August 2024
precursor of the modern Snake River. Particles of volcanic glass called tachylite were created as the water turned to steam and explosively fragmented the...
5 KB (614 words) - 06:20, 25 August 2024
allowed goods and information to flow over substantial distances. The Tachylite deposits near Spring Hill and the Coliban River may have been important...
30 KB (3,401 words) - 01:49, 13 May 2024
protolith, saprolitized peridotite, green saprolite (main ore horizon), tachylite (a Fe oxide horizon), black saprolite, yellow and red laterite. The sequence...
15 KB (1,845 words) - 20:45, 25 October 2023
Philosophical Society, Vol. 4 (1912), pp.172-174 (with R. C. Burton) 'The tachylite of the Cleveland dyke'. Geological Magazine of London, dec. 5, Vol. 9...
5 KB (510 words) - 15:26, 26 July 2023
along with the blocky, equant shapes and density of sideromelane and tachylite clastic rock in the field suggest that Sand Mountain Field lava interacted...
34 KB (4,344 words) - 06:44, 25 August 2024
tribal areas including Dja Dja Wurrung, Taungurong, and Woiwurrung. The Tachylite deposits near Spring Hill and the Coliban River may have been important...
6 KB (756 words) - 09:40, 7 May 2023
and Triassic material, which was eroded by lavas, with the presence of tachylite pyroclasts that imply rapid cooling by interaction with water. The Mawson...
64 KB (3,267 words) - 21:53, 30 July 2024