-
phreatomagmatic eruptions at
shallow water depths (or
within aquifers).
Hyalotuffs have a
layered nature that is
considered to be a
result of
dampened oscillation...
-
Thickness Unknown Lithology Primary Rhyolite flows, hyaloclastics, breccias,
hyalotuffs Other Shale, greywacke, siltstone, iron formation,
tholeiitic basalt,...
- by
subglacial volcanism. It can
contain pillow lava,
pillow breccia,
hyalotuff, hyaloclastite.
Examples are Skefilfjall, Kálfstindar,
Helgafell in Iceland...
-
allowing the
subaerial flow to move
forwards until it
reaches the sea again.
Hyalotuff Naylor, P.H., Bell, B.R., Jolley, D.W., Purnall, P. & Fredsted, R. 1999...
-
certain fallout deposits in the
crater rim were
thought to be lava flows.
Hyalotuff,
obsidian and
pumice have been
recovered from
Mount Berlin. Both welded...
