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Relationship between mass extinction and iridium across the Cretaceous-Paleogene boundary in New Jersey

Geology

By:
, , , , , , , , and
DOI: 10.1130/G31135.1

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Abstract

We directly link iridium (Ir) anomalies in New Jersey to the mass extinction of marine plankton marking the Cretaceous-Paleogene (K-Pg) boundary. We confirm previous reports of an Ir anomaly 20 cm below the extinction of Cretaceous macrofauna (the "Pinna" bed) with new results from a muddy sand section from Tighe Park, Freehold, New Jersey (United States), but we also show that Ir anomalies correlate with marine mass extinctions at three other clay-rich New Jersey sections. Thus, we attribute the anomaly at Freehold to the downward movement of Ir and reaffirm the link between impact and mass extinction. ?? 2010 Geological Society of America.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Relationship between mass extinction and iridium across the Cretaceous-Paleogene boundary in New Jersey
Series title:
Geology
DOI:
10.1130/G31135.1
Volume
38
Issue:
10
Year Published:
2010
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geology
First page:
867
Last page:
870
Number of Pages:
4