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Hyaloclastite is a
volcanoclastic ac****ulation or
breccia consisting of gl**** (from the Gr**** hyalus)
fragments (clasts)
formed by
quench fragmentation...
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Hyaloclastite Dam was a 1,201 ft (366 m) high lava dam that
occupied the
Grand Canyon of the U.S.
state of Arizona. It
formed during the
Pleistocene epoch...
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result of the much
higher fragmentation of
phreatomagmatic eruptions.
Hyaloclastite is gl****
found with
pillow basalts that were
produced by non-explosive...
- Hornblendite –
Plutonic rock
consisting mainly of the
amphibole hornblende Hyaloclastite –
Volcaniclastic ac****ulation or
breccia Icelandite –
Igneous rock type...
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curvilinear shards that
represent the
spalled rims of
pillow basalt (see:
Hyaloclastite). This
material is
commonly partly altered to chlorite, epidote, quartz...
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pebbles of
obsidian Helenite –
Artificial gl**** made from
volcanic ash
Hyaloclastite –
Volcaniclastic ac****ulation or
breccia and
tachylite –
volcanic gl****es...
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includes picrite pillows at the base,
followed by
tholeiitic lavas, then
hyaloclastites, then the
poikilitic sills. The CLF was
gradually uplifted until Eocene-Miocene...
- the
glacial maximum of 12–15,000
years ago
hyaloclastite, then
pillow lavas under steep-sided
hyaloclastite occurred.: 4
These built up
until Herðubreið...
- Gjálp (Icelandic pronunciation: [ˈcaul̥p]) is a
hyaloclastite ridge (tindar) in
Iceland under the Vatnajökull
glacier shield. Its
present form resulted...
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containing well-preserved mafic-intermediate
pillow lavas,
pillow breccias,
hyaloclastite and peperites,
submarine lava
domes and dome-****ociated
breccia deposits...
