TY - JOUR

T1 - Micropits on volcanic glass shards

T2 - Laboratory simulation and possible origin

AU - Huang, T. C.

AU - Varner, J. R.

AU - Wilson, L.

PY - 1980/8/1

Y1 - 1980/8/1

N2 - Submicrometer- to micrometer-sized pits are dominant features on volcanic glass shards derived from explosive eruptions and deposited in many deep-sea sediments and subaerial tuffs. The morphology of these pits and experimentally simulated pits and calculations of pressure fluctuations during or just after fragmentation in a magma chamber suggest the pits were formed by collision of volcanic particles, probably in the conduit system. The range of velocities calculated for the particles from the fragmentation of a magma clot, from a few tens up to 120 m/s, is very similar to the range found from the experimental results, 25–140 m/s. A collision with excess energy may reduce the particle size in a secondary fragmentation.

AB - Submicrometer- to micrometer-sized pits are dominant features on volcanic glass shards derived from explosive eruptions and deposited in many deep-sea sediments and subaerial tuffs. The morphology of these pits and experimentally simulated pits and calculations of pressure fluctuations during or just after fragmentation in a magma chamber suggest the pits were formed by collision of volcanic particles, probably in the conduit system. The range of velocities calculated for the particles from the fragmentation of a magma clot, from a few tens up to 120 m/s, is very similar to the range found from the experimental results, 25–140 m/s. A collision with excess energy may reduce the particle size in a secondary fragmentation.

U2 - 10.1016/0377-0273(80)90007-4

DO - 10.1016/0377-0273(80)90007-4

M3 - Journal article

AN - SCOPUS:84995014213

VL - 8

SP - 59

EP - 68

JO - Journal of Volcanology and Geothermal Research

JF - Journal of Volcanology and Geothermal Research

SN - 0377-0273

IS - 1

ER -