Journal article
Geometry of Proterozoic sutures in the central Rocky Mountains from seismic reflection data: Cheyenne belt and Farwell Mountain structures
Geophysical research letters, Vol.29(13), pp.17-1-17-4
07/2002
DOI: 10.1029/2001GL013819
Abstract
Seismic reflection data show ∼40° S‐dipping reflectors that extend from the Cheyenne belt (CB‐Archean‐Proterozoic suture) to 20 km depths, and profound differences in crustal reflectivity across the suture zone, which is itself imaged as an interwedging boundary. Archean crust has a Moho reflection (at 40 km) and abundant upper crustal reflectivity; Proterozoic crust has no Moho reflection and is distinctly less reflective. Reflective zones south of the Cheyenne belt include 40° S‐ and N‐dipping reflections that extend from the Farwell Mountain zone to 20 km depths; these are interpreted to be a complex cryptic suture zone between the 1.78–1.76 Ga Green Mountain block and 1.75–1.72 Ga Rawah block.
Details
- Title: Subtitle
- Geometry of Proterozoic sutures in the central Rocky Mountains from seismic reflection data: Cheyenne belt and Farwell Mountain structures
- Creators
- Elena Morozova - University of WyomingXin Wan - University of WyomingKevin R Chamberlain - University of WyomingScott B Smithson - University of WyomingIgor B Morozov - University of WyomingNickolas K Boyd - University of WyomingRoy A Johnson - University of ArizonaKarl E Karlstrom - University of New MexicoAmanda R Tyson - University of New MexicoC. T Foster - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.29(13), pp.17-1-17-4
- DOI
- 10.1029/2001GL013819
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Number of pages
- 4
- Language
- English
- Date published
- 07/2002
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984229293402771
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