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Whetsone Horizon

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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1950
AAPG Bulletin (1950) 34 (9): 1903–1909.
... is characteristically a long range form which has very wide distribution. It is common in the Normanskill shale of New York and in many horizons in all three of the major Athens graptolite zones. It occurs also in Arkansas, Oklahoma, Nevada, Quebec, British Columbia, New Brunswick, Scotland, Bohemia, and Australia (Fig...
FIGURES
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(03)
... below a temperature of ∼500 °C at ca. 170 Ma. U-Pb zircon ages were obtained from two plagiogranite dikes that intrude serpentinized peridotite near Whetsone Butte (JM-10 and JM-11; Fig. 2 ). Sample JM-11 yields a concordant age of 173 ± 1 Ma and sample JM-10 shows slight Pb loss with an intercept age...
FIGURES | View All (16)