- of
these rocks. Two
types of groundm**** are
generally recognized: the
trachytic,
composed mainly of long, narrow,
subparallel rods of sanidine, and the...
-
caldera up to 8
kilometres (5 mi) wide. Most of the
volcano is
formed by
trachytic lava flows, but
hyaloclastite is also found. Snow, ice, and
glaciers cover...
- that
obtained from the
Greenland ice core age model. The
comenditic and
trachytic volcanic gl****
shards with
chemical fingerprints ****ociated with the Millennium...
-
field located WSW of Kabul, Afghanistan. It
consists of 18
dacitic and
trachytic volcanoes including lava
domes and
possibly an old caldera.
Lists of volcanoes...
-
fragmental rock,
largely composed of
pumiceous dust, and may be
regarded as a
trachytic tuff. It much
resembles the
Italian pozzolana and is
applied to like purposes...
-
which contains a
large 8 x 12 km
caldera formed by vast
eruptions of
trachytic lava some 21,000
years ago. The
current summit cone was
developed within...
-
cinder cones, with or
without ****ociated lava,
whilst others are
domes of
trachytic rock, like the domite [fr; it] of the Puy-de-Dôme. The puys may be scattered...
- later.
Raiatea consists of shield-stage
basalt followed by post-shield
trachytic lava flows, all
occurring from 2.75 to 2.29 Ma.
Huahine consists of two...
-
Grosseto and Siena.
Mount Amiata (La Vetta) is a
compound lava dome with a
trachytic lava flow that
extends to the east. It is part of the
larger Amiata complex...
-
eruptions of
basalt from
cinder cones on and near the
caldera floor and
trachytic pyroclastic flow and
pumice fall
deposits from
younger volcanoes west...
