Journal article
Linking Time to the Pressure-Temperature Path for Ultrahigh-Pressure Rocks
Elements, Vol.9(4), pp.273-279
2013
DOI: 10.2113/gselements.9.4.273
Abstract
Establishing the timing and duration of ultrahigh-pressure metamorphism (UHP) for crustal rocks subducted to mantle depths of over 100 km requires high-precision geochronology directly coupled with pressure-sensitive indicators. The best links between UHP conditions and an age estimate are inclusions of the UHP indicator minerals coesite and/or diamond in datable zircon or garnet. Lu–Hf and Sm–Nd garnet ages define the prograde and peak portions of the pressure–temperature path for cold (<700 °C), fast (>1 cm/y) UHP systems. UHP metamorphism in hotter (>800 °C) and slower (<1 cm/y) terranes is best dated by U–Pb analysis of coesite-bearing zircon domains coupled with Sm–Nd and Lu–Hf garnet analysis.
Details
- Title: Subtitle
- Linking Time to the Pressure-Temperature Path for Ultrahigh-Pressure Rocks
- Creators
- William C McClelland - University of IowaThomas J Lapen - University of Houston
- Resource Type
- Journal article
- Publication Details
- Elements, Vol.9(4), pp.273-279
- DOI
- 10.2113/gselements.9.4.273
- ISSN
- 1811-5209
- eISSN
- 1811-5217
- Language
- English
- Date published
- 2013
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984230124802771
Metrics
8 Record Views