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

被引：48
|
作者：
Miller, Kenneth G. [1 ]
Sherrell, Robert M. [1 ,2 ]
Browning, James V. [1 ]
Field, M. Paul [2 ]
Gallagher, W. [3 ]
Olsson, Richard K. [1 ]
Sugarman, Peter J. [4 ]
Tuorto, Steven [2 ]
Wahyudi, Hendra [1 ]
机构：
[1] Rutgers State Univ, Dept Earth & Planetary Sci, Piscataway, NJ 08854 USA
[2] Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08903 USA
[3] Rider Univ, Dept Geol Environm & Marine Sci, Lawrenceville, NJ 08468 USA
[4] New Jersey Geol Survey, Trenton, NJ 08625 USA
来源：
GEOLOGY | 2010年 / 38卷 / 10期
基金：
美国国家科学基金会;
关键词：
MARINE OS-187/OS-188 RECORD; K-T BOUNDARY; TERTIARY BOUNDARY; DECCAN VOLCANISM; IMPACT; LAYER;
D O I：
10.1130/G31135.1
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
We directly link iridium (Ir) anomalies in New Jersey to the mass extinction of marine plankton marking the Cretaceous-Paleo-gene (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.
引用
收藏
页码：867 / 870
页数：4
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