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ankaramite
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ankaramite
ankaramite (æŋkəˈreɪmaɪt) [a. F. ankaramite (Lacroix 1916, in Comptes Rendus CLXIII. 182), f. Ankaramy in Madagascar: see -ite1.] A melanocratic basaltic rock (see quots.).1926 G. W. Tyrrell Princ. Petrol. vi. 129 Some basaltic types..need to be distinguished from basalts proper... When augite is th...
Oxford English Dictionary
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Ankaramy Be
Ankaramy Be is the type locality of a type of volcanic rock called ankaramite.
References and notes
Populated places in Sofia Region
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mafic
mafic, a. Min. (ˈmæfɪk) [f. magnesium + L. f-errum iron + -ic.] Pertaining to, containing, or designating the dark-coloured minerals of igneous rocks, which are predominantly ferromagnesian in character. Opp. felsic a.1912 W. Cross et al. in Jrnl. Geol. XX. 561 We suggest the term..mafic for the gro...
Oxford English Dictionary
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Kakepuku
Most of the volcano is composed of ankaramite basalt, a rare type of lava with megacrysts of clinopyroxene that is also found on Karioi, Mount Pirongia The steep dome structure of Kakepuku is the result of the high viscosity of its ankaramite lava.
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Alkaline magma series
Petrography
All alkaline series magmas are thought to have evolved from a primitive mafic alkaline magma, either an alkalic picrite basalt or an ankaramite
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Wōdejebato
Basalts at Wōdejebato mostly form an alkali basalt suite but also include ankaramite and hawaiite.
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Hawaiite
It is preceded by silica-poor ankaramite and followed by intermediate-silica mugearite as the magma evolves by crystallization in the underlying magma
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夏威夷岩
在岩浆分异作用中,在它之前结晶出的是含贫量矽的橄榄辉玄岩(ankaramite),之后是含中量矽 的橄榄粗安岩(mugearite)。夏威夷岩在岛上较老的岩石上形成了一个碱性岩盖。
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Alexandra Volcanic Group
The arc-type lavas of the Alexandra Volcanic Group are mainly ankaramite, a type of basalt found typically in some South Pacific Ocean Islands and not
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Ioah Guyot
Composition
Volcanic rocks found on Ioah Guyot include alkali basalt, tholeiite and hawaiite, plus ankaramite, phonolite and trachybasalt; as well as
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Pavagadh Hill
New varieties of rocks such as "rhyodycite, alkal-olivine basalt, mugearite and ankaramite" are reported.
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Mount Rinjani
These include: ankaramite, high-Al basalt, andesite, high-K andesite and dacite. Geochemical models suggest that fractional crystallization is an important process in the suite's differentiation, although the series: ankaramite-high-Al
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Mount Pirongia
The mountain contains unusually crystal-rich lavas of (ankaramite basalt) that also occur on Karioi, Kakepuku and Te Kawa but are not found elsewhere in
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Level Mountain
Renewed volcanism deposited a sequence of massive ankaramite lava flows over the second unit.
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