Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
scientific controversy
|
| gptkbp:centeredIn |
origin of iridium layer at K–Pg boundary
|
| gptkbp:debatedBy |
gptkb:Luis_Alvarez
gptkb:Walter_Alvarez gptkb:Gerta_Keller gptkb:Jan_Smit gptkb:Frank_Asaro gptkb:Helen_Michel |
| https://www.w3.org/2000/01/rdf-schema#label |
The Iridium Controversy
|
| gptkbp:involves |
gptkb:iridium_anomaly
volcanism hypothesis asteroid impact theory |
| gptkbp:location |
worldwide (K–Pg boundary sites)
|
| gptkbp:period |
1980s
|
| gptkbp:proposedExplanation |
gptkb:volcanic_activity_(Deccan_Traps)
asteroid impact |
| gptkbp:relatedTo |
gptkb:Alvarez_hypothesis
gptkb:Cretaceous–Paleogene_extinction_event |
| gptkbp:resultedIn |
ongoing debate about mass extinction causes
support for impact hypothesis |
| gptkbp:bfsParent |
gptkb:Petrophonics
|
| gptkbp:bfsLayer |
8
|