-
Tuffite is a tuff
containing both
pyroclastic and
detrital materials, but
predominantly pyroclasts.
According to the IUGS definition,
tuffite contains...
- sandstones,
siltstones and
conglomerates with
coaly mudstone and
minor tuffite. It was
deposited in a
continental shelf setting. It is
noted for its fossil...
- foraminifera, pteropods,
siliceous fossils Volcanogenic constituents:
Tuffites,
volcanic ash, montmorillonite, cristobalite,
zeolites Terrigenous constituents:...
-
million years ago. The
siltstone beds were
interbedded with
volcanic tuffite.
Tuffite is a
sedimentary rock with a
volcanic origin. It
formed by fine volcanic...
- rock
bodies Sillar –
Variety of
rhyolite containing fragments of
andesite Tuffite – Tuff
containing both
pyroclastic and
detrital materials Ignimbrite –...
- The
group contains volcanogenic conglomeratic sandstone, fine-grained
tuffite and
tuffaceous sediment. This
Precambrian volcano-sedimentary
group incorporates...
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Thickness 300–320 m (980–1,050 ft)
Lithology Primary Conglomerate, sandstone,
tuffite,
ignimbrite Location Coordinates 46°36′S 72°24′W / 46.6°S 72.4°W / -46...
-
dioxide and
hydrogen sulfide – the csevices. In some places, tuff and
tuffite layers are
deposited in the
Kiscell clay, but
these could not be the products...
-
considered Oxfordian to
early Tithonian in age
based on lead-uranium
dating of
tuffites within the unit. The 420 to 700
metres (1,380 to 2,300 ft)
thick formation...
-
consists of
freshwater continental deposits, with some beds of
volcanic tuffite. It
primarily overlies Jur****ic
marine sediments or
gneiss ba****t. Some...
