Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
isotope
|
| gptkbp:endOfLife |
1.248 billion years
|
| gptkbp:hasProductLine |
cosmic ray spallation
|
| https://www.w3.org/2000/01/rdf-schema#label |
K-40
|
| gptkbp:inheritsFrom |
gptkb:Ca-40
Ar-40 |
| gptkbp:locatedIn |
1930s
potassium minerals |
| gptkbp:naturalResources |
0.0117%
|
| gptkbp:numberOfFigures |
19
|
| gptkbp:usedIn |
radiometric dating
|
| gptkbp:weight |
40
|