Tectonothermal evolution of the Pinaleno-Jackson Mountain core complex, southeast Arizona

K. B. Long, S. L. Baldwin, George E Gehrels

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Petrologic data, U-Pb analyses of zircon, and 40Ar/39Ar analyses were used to document the tectonothermal history of two mylonite zones and the temporal relationship of mylonite formation to movement on detachment faults in the Pinaleno-Jackson Mountain metamorphic core complex of southeastern Arizona. Heterogeneous age distributions documented over relatively short distances in the lower plate of The Pinaleno-Jackson Mountain metamorphic core complex cannot be readily explained by a model of simple unroofing through a steady-state geotherm. Multiple recrystallization events during mylonite formation, and/or transient thermal events are required to explain the partial and complete isotopic resetting of thermochronometers in this area. -from Authors

Original languageEnglish (US)
Pages (from-to)1231-1240
Number of pages10
JournalBulletin of the Geological Society of America
Volume107
Issue number10
DOIs
StatePublished - 1995
Externally publishedYes

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mylonite
mountain
unroofing
detachment fault
resetting
age structure
zircon
history

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Tectonothermal evolution of the Pinaleno-Jackson Mountain core complex, southeast Arizona. / Long, K. B.; Baldwin, S. L.; Gehrels, George E.

In: Bulletin of the Geological Society of America, Vol. 107, No. 10, 1995, p. 1231-1240.

Research output: Contribution to journalArticle

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