-
significant amounts of gl****es are
still present, they show
vitric properties and
receive the
Vitric qualifier. With
advanced weathering of the gl****es, they...
-
granular (~rhyolitic),
microlitic (~andesitic),
lathwork (~basaltic), and
vitric (gl****y).
These correlations between composition and
volcanic lithic fragment...
-
flowed up the wellbore. This
produced several kilograms of clear,
colorless vitric (gl****y, non-crystalline)
cuttings at the surface. The
dacite magma is a...
-
interbedded with mudstone; up to
fifty percent by
volume is made up of
altered vitric ash,
which originated as
felsic ash falls.
Deposition likely occurred in...
- The
Newbury Volcanic Complex, also
known as the
Newbury Formation or the
Newbury Volcanics, is a 16 km long, 3 km wide
strip of
volcanic materials and...
- gl****, and tuff
formed predominantly from gl****
shards is
described as
vitric tuff. The gl****
shards are
typically either irregular in
shape or are roughly...
-
particles erupted during magmatic eruptions are made up of
various fractions of
vitric (gl****y, non-crystalline),
crystalline or
lithic (non-magmatic) particles...
-
amorphous matrix. In
igneous petrology, the term
microlitic is used to
describe vitric (gl****y, non-crystalline, amorphous)
matrix containing microscopic crystals...
- in the
formation are
largely composed of rhyolite, rhyodacite, pumice,
vitric ash, quartz, feldspar, and
minor biotite fragments.
Borophagus secundus...
-
consisting of co**** clastics,
polymictic conglomerates, sandstones, and
vitric (gl****y) tuffs, with
minor shales and siltstones. Gold
mineralization occurred...
