Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
radiometric dating method
|
| gptkbp:alternativeTo |
potassium-argon dating
uranium-lead dating |
| gptkbp:analyzes |
isotopic ratios
|
| gptkbp:based_on_decay |
rubidium-87 to strontium-87
|
| gptkbp:can_date |
metamorphic rocks
sedimentary rocks igneous rocks |
| gptkbp:developedBy |
1950s
|
| gptkbp:halfLife |
49 billion years
|
| https://www.w3.org/2000/01/rdf-schema#label |
rubidium–strontium dating
|
| gptkbp:inventedBy |
G. W. Wetherill
|
| gptkbp:limitation |
requires knowledge of initial strontium ratio
susceptible to loss or gain of strontium |
| gptkbp:measures |
age of rocks
age of minerals |
| gptkbp:requires |
closed system
|
| gptkbp:used_in |
gptkb:geochronology
geology |
| gptkbp:uses_isotope |
gptkb:rubidium-87
strontium-87 |
| gptkbp:bfsParent |
gptkb:potassium–argon_dating
|
| gptkbp:bfsLayer |
7
|