Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Early Proterozoic metasediments from north-central Colorado; metamorphism, provenance, and tectonic setting

Kent C. Condie and Charles Martell
Early Proterozoic metasediments from north-central Colorado; metamorphism, provenance, and tectonic setting
Geological Society of America Bulletin (October 1983) 94 (10): 1215-1224

Abstract

Big Thompson Canyon area. Increase in grade from the biotite zone to the sillimanite zone, representing a low-pressure facies series that probably developed in response to a steep geotherm over a thermal high. Detrital grains suggest a recycled orogen provenance. Major and trace elements, REE patterns. The metasediments may have been derived from an uplifted collisional orogen in southern Wyoming in which unroofed Proterozoic granitic rocks and quartzites of the Snowy Pass Supergroup served as the principal sources.--Modified journal abstract.


ISSN: 0016-7606
EISSN: 1943-2674
Coden: BUGMAF
Serial Title: Geological Society of America Bulletin
Serial Volume: 94
Serial Issue: 10
Title: Early Proterozoic metasediments from north-central Colorado; metamorphism, provenance, and tectonic setting
Affiliation: N.M. Inst. Min. and Technol., Socorro, NM, United States
Pages: 1215-1224
Published: 198310
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 25
Accession Number: 1983-056013
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 10 anal., geol. sketch map
N40°19'60" - N40°28'00", W105°22'60" - W105°12'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1983
Close Modal

or Create an Account

Close Modal
Close Modal