Temporal changes in Nd isotopic composition of sedimentary rocks in the Sevier and Taconic foreland basins: increasing influence of juvenile sources

C. B. Andersen, S. D. Samson

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

Initial 143 Nd/ 144 Nd ratios of clastic sedimentary rocks in the Ordovician Taconic and Sevier foreland basins increase with decreasing stratigraphic age. This shift in isotopic composition reflects an increased influx of juvenile sediment to both basins. For the Taconic basin, geologic and isotopic data are consistent with the juvenile sediment being derived from uplifted Grenville crust. For the Sevier foreland basin, there are few geologic constraints on source regions, but the similar shift in isotopic ratios with time suggests a similar increase in the influence of juvenile sources such as exotic terranes. -from Authors

Original languageEnglish (US)
Pages (from-to)983-986
Number of pages4
JournalGeology
Volume23
Issue number11
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Geology

Fingerprint Dive into the research topics of 'Temporal changes in Nd isotopic composition of sedimentary rocks in the Sevier and Taconic foreland basins: increasing influence of juvenile sources'. Together they form a unique fingerprint.

  • Cite this