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Phonolite is an
uncommon shallow intrusive or
extrusive rock, of
intermediate chemical composition between felsic and mafic, with
texture ranging from...
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Tephriphonolite or tephri-
phonolite is a
mafic to
intermediate extrusive igneous rock in
composition between phonotephrite and
phonolite. It
contains 9–14% alkali...
-
composition between phonolite and
tephritePages displaying wikidata descriptions as a
fallback – A
volcanic rock with a
composition between phonolite and tephrite...
- romanized: Ye’Åksum ḥāwelt) is a 4th-century CE, 24-metre (79 ft) tall
phonolite stele,
weighing 160
tonnes (160 long tons; 180
short tons), in the city...
- of
diverse composition Nogal Peak
Trachyte (31.4 Ma)
Church Mountain Phonolite (32.7 Ma)
Walker Group Three Rivers Formation,
divided into members: Buck...
- in the M****if
Central in France. It is made of a type of rock
called phonolite. It
rises to an
altitude of 1,551 m (5,089 ft), and its base contains...
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eruptive products of
Erebus are anorthoclase-porphyritic
tephritic phonolite and
phonolite,
which are the bulk of
exposed lava flow on the volcano. The oldest...
- active. The
volcanoes are all
surmounted by
rocks composed of trachyte,
phonolite, pantellerite, or comendite.
Their activity has been
attributed either...
- they are not
unlike granites, but dark
green varieties are also known.
Phonolite is the fine-grained
extrusive equivalent.
Nepheline syenites are silica-undersaturated...
-
southeast side of
Kittatinny Mountains. The ****s or
sills consist either of
phonolite, tinguaite,
lamprophyre micromalignite,
lamprophyre micromelteigite, or...
