Distribution of shearsenses of crenulations within garnet schists along and across the Ogcheon Orogen

Lee, Hyun-Woo (2000) Distribution of shearsenses of crenulations within garnet schists along and across the Ogcheon Orogen. Geoscience Canada, 4. pp. 142-144.

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Abstract

[Extract] The NE-trending Ogcheon Orogenic Belt is regarded as forming mainly during progressive NW-SE bulk shortening and/or thrusting. However, this model does not readily explain anomalous geological relationships such as the NW-SE orogenic trend in the northeastern end of the belt, variable dips of NE-SW-striking foliations and contradictory structural youngings across the belt. 3-D microstructural analysis combined with measurement of foliation inflexion/intersection axes preserved in garnet porphyroblasts (FIA, e.g. Bell et al., 1998), using a series for each garnet-bearing schist sample, have revealed a sequence of several sets of foliations preserved in porphyroblasts and/or in the matrix along and across the Ogcheon Orogen. This structural framework includes early composite foliations resulted from NE-SW shortening and crenulation cleavages resulted from NE-SW shortening (Lee, 1999).

Item ID: 12872
Item Type: Article (Short Note)
ISSN: 0315-0941
Date Deposited: 11 Dec 2012 00:12
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040304 Igneous and Metamorphic Petrology @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970104 Expanding Knowledge in the Earth Sciences @ 100%
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