Pumice fragments typically have a specific gravity of &lt;1.0 and so will float on water, at least until enough vesicles are saturated to cause them to sink.
(enough vesicles; are saturated; to cause them to sink) (1.0 and so; will float; L:on water; T:at least until enough vesicles are saturated to cause them to sink) Context(1.0 and so will float,List([58, 79))):(Pumice fragments; typically have; a specific gravity of &lt)
1.0 and so will float,List([58, 79))
enough vesicles 1.0 and so Pumice fragments
are saturated will float typically have
to cause them to sink
L:on water T:at least until enough vesicles are saturated to cause them to sink
a specific gravity of &lt