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Scoria is a pyroclastic,
highly vesicular, dark-colored
volcanic rock
formed by
ejection from a
volcano as a
molten blob and
cooled in the air to form...
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color due to iron oxide.
Tezontle is a well-cemented,
agglomeritic and
scoriaceous rock.
Tezontle can be
mixed with
concrete to form
lightweight concrete...
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micrometeorite classes: a) Fine-grained unmelted; b) Co****-grained Unmelted; c)
Scoriaceous; d) Relict-grain Bearing; e) Porphyritic; f)
Barred olivine; g) Cryptocrystalline;...
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records fluidal surfaces: they may, for example, have ropy, cauliform,
scoriaceous, folded, spindle, spatter, ribbon, ragged, or
amoeboid shapes. Globular...
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connected two
separate groups of the
churches with each
other out of the
scoriaceous basalt. The "construction" was done from top to bottom. The Churches...
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flows are
generally less than a
metre thick and
mostly basaltic with
scoriaceous inclusions. The
flows have
subsequently been
intruded by
several swarms...
- and
basaltic andesite lava flows,
along with
pyroclastic deposits and
scoriaceous material,
originating from
strombolian eruptions which are
thought to...
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erupted in
valleys and on
mountain ridges.
These volcanic rocks form
scoriaceous lava flows, breccias,
volcanic bombs and
pillow lavas. The
location of...
- flow breccias, and tuff breccias. The Devil's Peak
Member consists of
scoriaceous andesitic and
dacitic flows. The Prisoner's
Harbor Member consists of...
- its extent. Some of the
flows are
still so
young as to
preserve their scoriaceous surface. Here, the s****-line of the lava
contours evenly around the...
