Strontium isotope stratigraphy for Late Cretaceous time: Direct numerical calibration of the Sr isotope curve based on the US Western Interior
Volume: 108, Issue: 1-2, Pages: 95 - 119
Published: Mar 1, 1994
Abstract
The 87Sr/86Sr of Sr in macrofossil carbonate from Upper Cretaceous strata deposited in the Western Interior Seaway, USA, provides a Sr-isotope curve for Late Cretaceous time (Cenomanian-Early Maastrichtian). The curve is calibrated biostratigraphically against the most refined ammonite zonation known for the interval, and calibrated numerically with 39Ar/40Ar dates for 20 bentonites within the sequence. Marine 87Sr/86Sr decreased from 0.70743 in...
Paper Details
Title
Strontium isotope stratigraphy for Late Cretaceous time: Direct numerical calibration of the Sr isotope curve based on the US Western Interior
Published Date
Mar 1, 1994
Volume
108
Issue
1-2
Pages
95 - 119
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