Abstract
No continuous trends toward progressively negative del O18 values downhole were found at site 398. C isotope values show more consistent trends, and except for a number of values in the L Cretaceous section that are isotopically light due to diagenetic effects, may reflect original variations in the C isotope composition of the ocean reservoir. Significant isotopic fluctuations occur near the Cretaceous/Tertiary boundary and in the U Paleocene section. Only a slight cooling at the Cretaceous/Tertiary boundary is evidenced by benthic and planktonic foraminifers. -from Authors
Original language | English (US) |
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Pages (from-to) | 477-491 |
Number of pages | 15 |
Journal | Unknown Journal |
State | Published - Jan 1 1979 |
All Science Journal Classification (ASJC) codes
- General Environmental Science
- General Earth and Planetary Sciences