Abstract
Foliation Intersection/Inflection Axes within porphyroblasts (FIAs) provide a quantitative approach to microstructural and metamorphic analysis that can be used to integrate multiple deformation and metamorphic events and develop lengthy PT path histories during orogenesis. This paper reviews applications of FIAs for determining (1) porphyroblast rotation vs. nonrotation; (2) inclusion trail orientations and orogenic processes involving changes in the direction of bulk horizontal shortening; (3) in situ age determinations for multiple deformation episodes; (4) P-T-t-d paths of poly-metamorphism in an orogenic belt; and (5) constraining relative plate movement paths within ancient orogens. Quantitative structural and metamorphic data correlated directly to relative plate motions, are currently allowing the tectonic reconstruction of multiply deformed and metamorphosed terrains in orogens around the world.
| Original language | English |
|---|---|
| Pages (from-to) | 1013-1032 |
| Number of pages | 20 |
| Journal | Geosciences Journal |
| Volume | 21 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2017 Dec 1 |
Bibliographical note
Publisher Copyright:© 2017, The Association of Korean Geoscience Societies and Springer-Verlag GmbH Germany, part of Springer Nature.
Keywords
- bulk shortening
- deformation
- foliation intersection/inflection axes within porphyroblasts (FIAs)
- metamorphism
- orogenesis
ASJC Scopus subject areas
- General Environmental Science
- General Earth and Planetary Sciences