microtektites

GPTKB entity

Statements (22)
Predicate Object
gptkbp:instanceOf natural glass
gptkbp:age up to millions of years
gptkbp:associatedWith impact craters
gptkbp:color black
brown
gray
gptkbp:composition silicate glass
gptkbp:discoveredBy 1960s
gptkbp:distribution global
gptkbp:formedBy meteorite impacts
gptkbp:foundIn deep-sea sediments
terrestrial sediments
https://www.w3.org/2000/01/rdf-schema#label microtektites
gptkbp:relatedTo spherules
gptkbp:shape spherical
dumbbell-shaped
gptkbp:size less than 1 mm
gptkbp:studiedBy planetary science
astrogeology
gptkbp:type tektite
gptkbp:bfsParent gptkb:Alvarez_hypothesis_(dinosaur_extinction)
gptkbp:bfsLayer 5