-
Comendite is a hard,
peralkaline igneous rock, a type of
light blue grey rhyolite.
Phenocrysts are
sodic sanidine with
minor albite and
bipyramidal quartz...
- date
supports that
obtained from the
Greenland ice core age model. The
comenditic and
trachytic volcanic gl****
shards with
chemical fingerprints ****ociated...
- from
multiple eruptive centres. The
felsic rocks include trachyte and
comenditic rhyolite which form
pyroclastic deposits, lava
domes and lava flows. Basalt...
-
million years and 6.1 ± 0.1
million years from
comenditic ash flows, 6.9 ± 0.3
million years from
comenditic gl**** and 6.5 ± 0.2
million years, 6.3 ± 0.5...
-
epiclastic deposits consist of
gravel and
landslide debris derived from
thick comenditic lava
flows that form a
ridge adjacent to Gnu Butte.
Volcanism of the Mount...
-
yielded ages of 1.2 ± 0.4
million years and 1.2 ± 0.03
million years from
comenditic gl****, as well as 0.94 ± 0.12
million years and 0.94 ± 0.05
million years...
- an area
about 40
square kilometres (15
square miles). The
pumice is of
comenditic trachyte composition and
reaches a
thickness of up to 2
metres (6.6 feet)...
- main groups, trachytes,
comenditic rhyolites, ignimbrites, pumices,
syenite inclusions and basalts.
Trachytes and
comenditic rhyolites form the main volume...
-
Member of the Nido
Formation which are
overlain by
Pleistocene comendite,
comenditic trachyte and
pantellerite of the
Pyramid Formation.
Overlying the Pyramid...
-
yielded ages of 1.2 ± 0.4
million years and 1.20 ± 0.03
million years for
comenditic gl**** and 0.94 ± 0.12
million years and 0.94 ± 0.05
million years for...
