thumbnail

Palynological and iridium anomalies at Cretaceous-Tertiary boundary, south-central Saskatchewan

Science

By:
, , , and

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

The Cretaceous-Tertiary boundary in south-central Saskatchewan is marked by coincident anomalies in abundance of iridium and fern spores at the extinction level of a suite of Cretaceous pollen taxa. Evidence of disruption of the terrestrial flora includes the fern-spore abundance anomaly and local extinction of as much as 30 percent of angiosperm species. The reorganized earliest Tertiary flora is made up largely of surviving species that assumed new roles of dominance. Persistence of climatically sensitive taxa across the boundary indicates that if paleoclimate was altered by the terminal Cretaceous event, it returned quickly to the pre-event condition.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Palynological and iridium anomalies at Cretaceous-Tertiary boundary, south-central Saskatchewan
Series title:
Science
Volume
231
Issue:
4739
Year Published:
1986
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
714
Last page:
717
Number of Pages:
4