Evidence for an inverted metamorphic gradient associated with a Precambrian suture, southern Wyoming ( USA).

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

An inverted metamorphic gradient associated with the N mylonite zone of the Cheyenne belt, a deeply eroded Precambrian suture in S Wyoming, has been documented within metasedimentary rocks of the Early Proterozoic Snowy Pass Supergroup. Metamorphic grade in the steeply dipping supracrustal sequence increases from the chlorite through the biotite, garnet, and staurolite zones both stratigraphically and structurally upward toward the N mylonite zone. A minimum temperature increase of approx 100oC over a km-wide zone is required for this transition. Parallelism of inverted isograds with the trace of the N mylonite zone implies a genetic relationship between deformation associated with that zone and the inverted metamorphic gradient within the Snowy Pass Supergroup.-from Author

Original languageEnglish (US)
Pages (from-to)41-63
Number of pages23
JournalJournal of Metamorphic Geology
Volume6
Issue number1
StatePublished - 1988
Externally publishedYes

Fingerprint

Garnets
Precambrian
Rocks
mylonite
Temperature
staurolite
metasedimentary rock
chlorite
biotite
Proterozoic
garnet
temperature

ASJC Scopus subject areas

  • Geology

Cite this

@article{199a673bfb114724afd0d55a799585fa,
title = "Evidence for an inverted metamorphic gradient associated with a Precambrian suture, southern Wyoming ( USA).",
abstract = "An inverted metamorphic gradient associated with the N mylonite zone of the Cheyenne belt, a deeply eroded Precambrian suture in S Wyoming, has been documented within metasedimentary rocks of the Early Proterozoic Snowy Pass Supergroup. Metamorphic grade in the steeply dipping supracrustal sequence increases from the chlorite through the biotite, garnet, and staurolite zones both stratigraphically and structurally upward toward the N mylonite zone. A minimum temperature increase of approx 100oC over a km-wide zone is required for this transition. Parallelism of inverted isograds with the trace of the N mylonite zone implies a genetic relationship between deformation associated with that zone and the inverted metamorphic gradient within the Snowy Pass Supergroup.-from Author",
author = "Duebendorfer, {Ernest M}",
year = "1988",
language = "English (US)",
volume = "6",
pages = "41--63",
journal = "Journal of Metamorphic Geology",
issn = "0263-4929",
publisher = "Wiley-Blackwell",
number = "1",

}

TY - JOUR

T1 - Evidence for an inverted metamorphic gradient associated with a Precambrian suture, southern Wyoming ( USA).

AU - Duebendorfer, Ernest M

PY - 1988

Y1 - 1988

N2 - An inverted metamorphic gradient associated with the N mylonite zone of the Cheyenne belt, a deeply eroded Precambrian suture in S Wyoming, has been documented within metasedimentary rocks of the Early Proterozoic Snowy Pass Supergroup. Metamorphic grade in the steeply dipping supracrustal sequence increases from the chlorite through the biotite, garnet, and staurolite zones both stratigraphically and structurally upward toward the N mylonite zone. A minimum temperature increase of approx 100oC over a km-wide zone is required for this transition. Parallelism of inverted isograds with the trace of the N mylonite zone implies a genetic relationship between deformation associated with that zone and the inverted metamorphic gradient within the Snowy Pass Supergroup.-from Author

AB - An inverted metamorphic gradient associated with the N mylonite zone of the Cheyenne belt, a deeply eroded Precambrian suture in S Wyoming, has been documented within metasedimentary rocks of the Early Proterozoic Snowy Pass Supergroup. Metamorphic grade in the steeply dipping supracrustal sequence increases from the chlorite through the biotite, garnet, and staurolite zones both stratigraphically and structurally upward toward the N mylonite zone. A minimum temperature increase of approx 100oC over a km-wide zone is required for this transition. Parallelism of inverted isograds with the trace of the N mylonite zone implies a genetic relationship between deformation associated with that zone and the inverted metamorphic gradient within the Snowy Pass Supergroup.-from Author

UR - http://www.scopus.com/inward/record.url?scp=0023737779&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023737779&partnerID=8YFLogxK

M3 - Article

VL - 6

SP - 41

EP - 63

JO - Journal of Metamorphic Geology

JF - Journal of Metamorphic Geology

SN - 0263-4929

IS - 1

ER -