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Picrite basalt or
picrobasalt is a
variety of high-magnesium
olivine basalt that is very rich in the
mineral olivine. It is dark with yellow-green olivine...
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mafic (rich in
magnesium and iron),
chiefly basalt and
picrite basalt (
picrobasalt).
Other ****ociated
volcanic features include a
chain of
spatter cones...
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consistent with
their TAS classification.
Basalt contains more
silica than
picrobasalt and most
basanites and
tephrites but less than
basaltic andesite. Basalt...
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flanks that were
formed between 150,000 and 200,000
years ago and
erupted picrobasalts, trachybasalts, ankaramites, and basanites. They
reach as far as Lake...
- (Trachyandesite—*Sodic and pot****ic
variants are
Benmoreite and Latite. Pc (
Picrobasalt) U1 (Basanite or Tephrite)—Use
normative mineralogy to decide. U2 (Phonotephrite)...
- in this system,
Gusev plains rocks lie near the
junction of basalt,
picrobasalt, and tephrite. The Irvine-Barager
classification calls them basalts....
- in this system,
Gusev plains rocks lie near the
junction of basalt,
picrobasalt, and tephrite. The Irvine-Barager
classification calls them basalts....
- in this system,
Gusev plains rocks lie near the
junction of basalt,
picrobasalt, and tephrite. The Irvine-Barager
classification calls them basalts....
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Basanite is the
dominant rock of outcrops, with
phonolite less
common and
picrobasalt and
tephrite rare.
Outcrops of
older rocks include mugearite, rhyolite...
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trace element data on
pyroxenite and
peridotite xenoliths from
Miocene picrobasalt". Lithos. 54 (1–2): 83–114. Bibcode:2000Litho..54...83L. doi:10...
