TY - JOUR
T1 - Lithic-dominated pyroclastic flows at Galeras volcano, Colombia - an unrecognized volcanic hazard
AU - Calvache V., M. L.
AU - Williams, Stanley
PY - 1992/1/1
Y1 - 1992/1/1
N2 - Yellow, hydrothermally altered, lithic-dominated pyroclastic breccia deposits, having only a minor juvenile component contain evidence that they were emplaced as hot, fluidized, true pyroclastic flows. The distribution of the flows around the caldera rim, their transport mechanisms inferred from grain-size analyses, and the presence of charcoal and coarse channel and fine overbank facies indicate that these deposits were emplaced as true pyroclastic flows. These deposits are the result of a regularly repeated eruption sequence, involving clearing of vent material as a prelude to more typical pumiceous pyroclastic flows. -from Authors
AB - Yellow, hydrothermally altered, lithic-dominated pyroclastic breccia deposits, having only a minor juvenile component contain evidence that they were emplaced as hot, fluidized, true pyroclastic flows. The distribution of the flows around the caldera rim, their transport mechanisms inferred from grain-size analyses, and the presence of charcoal and coarse channel and fine overbank facies indicate that these deposits were emplaced as true pyroclastic flows. These deposits are the result of a regularly repeated eruption sequence, involving clearing of vent material as a prelude to more typical pumiceous pyroclastic flows. -from Authors
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U2 - 10.1130/0091-7613(1992)020<0539:LDPFAG>2.3.CO;2
DO - 10.1130/0091-7613(1992)020<0539:LDPFAG>2.3.CO;2
M3 - Article
AN - SCOPUS:84879883352
SN - 0091-7613
VL - 20
SP - 539
EP - 542
JO - Geology
JF - Geology
IS - 6
ER -