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
|