-
Trachybasalt is a
volcanic rock with a
composition between trachyte and basalt. It
resembles basalt but has a high
content of
alkali metal oxides. Minerals...
-
Trachybasalt –
Volcanic rock – A
volcanic rock with a
composition between basalt and
trachyte Hawaiite –
Volcanic rock – a
sodic type of
trachybasalt...
-
upper ****emblage
consists of
randomly oriented alkali basalt, hawaiite,
trachybasalt, tristanite, mugearite,
benmoreite and
trachyte that are in the form...
- the main
island of
Grande Terre. The
volcano is
composed primarily of
trachybasalt and was
active during the late Pleistocene.
Eruptives have been dated...
-
erupted lava,
which descended over
steep slopes.
Tambora has
produced trachybasalt and
trachyandesite rocks which are rich in pot****ium. The
volcanics contain...
-
formed between 150,000 and 200,000
years ago and
erupted picrobasalts,
trachybasalts, ankaramites, and basanites. They
reach as far as Lake
Chala and Taveta...
-
trachyte or phonolite. The pot****ic
series evolves through trachybasalt or
leucite trachybasalt through tristanite or
leucite tristanite to pot****ic trachyte...
-
defined chemically.
Under the TAS classification,
hawaiite is
sodic trachybasalt, with a
silica content close to 49 wt%, a
total alkali metal oxide content...
-
basaltic andesite.
Basalt has a
lower total content of
alkali oxides than
trachybasalt and most
basanites and tephrites.
Basalt generally has a composition...
-
mineralogy to decide. Ph (Phonolite) S1 (
Trachybasalt)—*Sodic and pot****ic
variants are
Hawaiite and Pot****ic
Trachybasalt. S2 (Basaltic trachyandesite)—*Sodic...
