40Ar/39Ar whole-rock data constraints on Acadian diagenesis and Alleghanian cleavage in the Martinsburg Formation, eastern Pennsylvania

American Journal of Science
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Abstract

The whole-rock 40 Ar/39 Ar technique used to find the age constraints of the slaty cleavage in the Martinsburg Formation at Lehigh Gap, Pennsylvania, reveals that the Taconic orogeny in the area was a very mild event. Comparison of age spectra of whole-rock mudstone and slate samples with stratigraphic and thermal constraints suggest an Alleghanian age for regional slaty cleavage and a late Acadian age for diagenesis in these rocks. The ages of diagenetic and cleavage-forming white mica have been constrained to be Early Devonian or younger and Late Devonian or younger, respectively.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title 40Ar/39Ar whole-rock data constraints on Acadian diagenesis and Alleghanian cleavage in the Martinsburg Formation, eastern Pennsylvania
Series title American Journal of Science
DOI 10.2475/ajs.296.7.766
Volume 296
Year Published 1996
Language English
Publisher Yale University
Contributing office(s) Florence Bascom Geoscience Center
Description 23 p.
First page 766
Last page 788
Country United States
State Pennsylvania, New York, Delaware, New Jersey
Other Geospatial LeHigh Gap
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