-
Ankaramite is
volcanic rock type of
mafic composition. It is a dark
porphyritic variety of
basanite containing abundant pyroxene and
olivine phenocrysts...
- volcano,
Rinjani is
composed of a
diverse range of lavas.
These include:
ankaramite, high-Al basalt, andesite, high-K
andesite and dacite. Sr-isotopic and...
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primitive mafic alkaline magma,
either an
alkalic picrite basalt or an
ankaramite. This
evolves to an
alkali olivine basalt or basanite.
Thereafter the...
- 000
alkali basalt with
minor amounts of
picritic basalt,
hawaiite and
ankaramite 15 185
mostly southern flank and
summit Spatter deposits, extensively...
- 150,000 and 200,000
years ago and
erupted picrobasalts, trachybasalts,
ankaramites, and basanites. They
reach as far as Lake
Chala and
Taveta in the southeast...
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Ocean Country Portugal
Geology Age of rock 300,000-10,000
years Mountain type
Shield volcano Type of rock
Ankaramite Last
eruption 5,000-10,000
years ago...
-
around 1.6 Ma. The
mountain contains unusually crystal-rich
lavas of (
ankaramite basalt) that also
occur on Karioi,
Kakepuku and Te Kawa but are not found...
-
varieties of
rocks such as "rhyodycite, alkal-olivine basalt,
mugearite and
ankaramite" are reported. It is also
recorded that
except for rhyolite, all the rocks...
-
deposit Manueline Dakar was
discovered in 1940.
Basalt rocks including ankaramite were used for
making microlithic tools such as axes or planes. Such tools...
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series characteristic of such eruptions. It is
preceded by silica-poor
ankaramite and
followed by intermediate-silica
mugearite as the
magma evolves by...
