Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton
The Fuping Complex and the adjoining Wutai and Hengshan Complexes are located in the central zone of the North China craton. The dominant rock types in the Fuping Complex are high-grade tonalitic-trondhjemitic-granodioritic (TTG) gneisses, with minor amounts of mafic granulites, syntectonic granitic...
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/a133677c-7897-4459-8797-d5f0c509374a 2024-09-15T17:42:17+00:00 Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton Zhao, G C Wilde, S A Cawood, Peter Anthony Lu, L Z 2000-07 https://research-portal.st-andrews.ac.uk/en/researchoutput/petrology-and-pt-path-of-the-fuping-mafic-granulites-implications-for-tectonic-evolution-of-the-central-zone-of-the-north-china-craton(a133677c-7897-4459-8797-d5f0c509374a).html http://www.scopus.com/inward/record.url?scp=0034234336&partnerID=8YFLogxK eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/petrology-and-pt-path-of-the-fuping-mafic-granulites-implications-for-tectonic-evolution-of-the-central-zone-of-the-north-china-craton(a133677c-7897-4459-8797-d5f0c509374a).html info:eu-repo/semantics/restrictedAccess Zhao , G C , Wilde , S A , Cawood , P A & Lu , L Z 2000 , ' Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton ' , Journal of Metamorphic Geology , vol. 18 , no. 4 , pp. 375-391 . continental collision mafic granulites metamorphism North China craton tectonic evolution TEMPERATURE-TIME PATHS REGIONAL METAMORPHISM THERMAL EVOLUTION EAST ANTARCTICA INNER-MONGOLIA BASEMENT ROCKS GARNET WUTAISHAN MINERALS PROVINCE article 2000 ftunstandrewcris 2024-07-17T23:33:27Z The Fuping Complex and the adjoining Wutai and Hengshan Complexes are located in the central zone of the North China craton. The dominant rock types in the Fuping Complex are high-grade tonalitic-trondhjemitic-granodioritic (TTG) gneisses, with minor amounts of mafic granulites, syntectonic granitic rocks and supracrustal rocks. The petrological evidence from the mafic granulites indicates three stages of metamorphic evolution. The M-1 stage is represented by garnet porphyroblasts and matrix plagioclase, quartz, orthopyroxene, clinopyroxene and hornblende. Orthopyroxene+plagioclase symplectites and clinopyroxene+plagioclase +/- orthopyroxene coronas formed in response to decompression during M-2 following the peak metamorphism at M-1. Hornblende+plagioclase symplectites formed as a result of further isobaric cooling and retrograde metamorphism during M-3. The P-T estimates using TWQ thermobarometry are: 900-950 degrees C and 8.0-8.5 kbar for the peak assemblage (M-1), based on the core compositions of garnet, matrix pyroxene and plagioclase; 700-800 degrees C and 6.0-7.0 kbar for the pyroxene+plagioclase symplectites or coronas (M-2); and 550-650 degrees C and 5.3-6.3 kbar for the hornblende+plagioclase symplectites (M-3), based on garnet rim and corresponding symplectic mineral compositions. These P-T estimates define a clockwise P-T path involving near-isothermal decompression for the Fuping Complex, similar to the P-T path estimated for the metapelitic gneisses. The inferred P-T path suggests that the Fuping Complex underwent initial crustal thickening, subsequent exhumation, and finally cooling and retrogression. This tectonothermal path is similar to P-T paths inferred for the Wutai and Hengshan Complexes and other tectonic units in the central zone of the North China craton, but different from anti-clockwise P-T paths estimated for the basement rocks in the eastern and western zones of the craton. Based on lithological, structural, metamorphic and geochronological data, the eastern and western zones of the ... Article in Journal/Newspaper Antarc* Antarctica East Antarctica University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
continental collision mafic granulites metamorphism North China craton tectonic evolution TEMPERATURE-TIME PATHS REGIONAL METAMORPHISM THERMAL EVOLUTION EAST ANTARCTICA INNER-MONGOLIA BASEMENT ROCKS GARNET WUTAISHAN MINERALS PROVINCE |
spellingShingle |
continental collision mafic granulites metamorphism North China craton tectonic evolution TEMPERATURE-TIME PATHS REGIONAL METAMORPHISM THERMAL EVOLUTION EAST ANTARCTICA INNER-MONGOLIA BASEMENT ROCKS GARNET WUTAISHAN MINERALS PROVINCE Zhao, G C Wilde, S A Cawood, Peter Anthony Lu, L Z Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton |
topic_facet |
continental collision mafic granulites metamorphism North China craton tectonic evolution TEMPERATURE-TIME PATHS REGIONAL METAMORPHISM THERMAL EVOLUTION EAST ANTARCTICA INNER-MONGOLIA BASEMENT ROCKS GARNET WUTAISHAN MINERALS PROVINCE |
description |
The Fuping Complex and the adjoining Wutai and Hengshan Complexes are located in the central zone of the North China craton. The dominant rock types in the Fuping Complex are high-grade tonalitic-trondhjemitic-granodioritic (TTG) gneisses, with minor amounts of mafic granulites, syntectonic granitic rocks and supracrustal rocks. The petrological evidence from the mafic granulites indicates three stages of metamorphic evolution. The M-1 stage is represented by garnet porphyroblasts and matrix plagioclase, quartz, orthopyroxene, clinopyroxene and hornblende. Orthopyroxene+plagioclase symplectites and clinopyroxene+plagioclase +/- orthopyroxene coronas formed in response to decompression during M-2 following the peak metamorphism at M-1. Hornblende+plagioclase symplectites formed as a result of further isobaric cooling and retrograde metamorphism during M-3. The P-T estimates using TWQ thermobarometry are: 900-950 degrees C and 8.0-8.5 kbar for the peak assemblage (M-1), based on the core compositions of garnet, matrix pyroxene and plagioclase; 700-800 degrees C and 6.0-7.0 kbar for the pyroxene+plagioclase symplectites or coronas (M-2); and 550-650 degrees C and 5.3-6.3 kbar for the hornblende+plagioclase symplectites (M-3), based on garnet rim and corresponding symplectic mineral compositions. These P-T estimates define a clockwise P-T path involving near-isothermal decompression for the Fuping Complex, similar to the P-T path estimated for the metapelitic gneisses. The inferred P-T path suggests that the Fuping Complex underwent initial crustal thickening, subsequent exhumation, and finally cooling and retrogression. This tectonothermal path is similar to P-T paths inferred for the Wutai and Hengshan Complexes and other tectonic units in the central zone of the North China craton, but different from anti-clockwise P-T paths estimated for the basement rocks in the eastern and western zones of the craton. Based on lithological, structural, metamorphic and geochronological data, the eastern and western zones of the ... |
format |
Article in Journal/Newspaper |
author |
Zhao, G C Wilde, S A Cawood, Peter Anthony Lu, L Z |
author_facet |
Zhao, G C Wilde, S A Cawood, Peter Anthony Lu, L Z |
author_sort |
Zhao, G C |
title |
Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton |
title_short |
Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton |
title_full |
Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton |
title_fullStr |
Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton |
title_full_unstemmed |
Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton |
title_sort |
petrology and p-t path of the fuping mafic granulites: implications for tectonic evolution of the central zone of the north china craton |
publishDate |
2000 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/petrology-and-pt-path-of-the-fuping-mafic-granulites-implications-for-tectonic-evolution-of-the-central-zone-of-the-north-china-craton(a133677c-7897-4459-8797-d5f0c509374a).html http://www.scopus.com/inward/record.url?scp=0034234336&partnerID=8YFLogxK |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
Zhao , G C , Wilde , S A , Cawood , P A & Lu , L Z 2000 , ' Petrology and P-T path of the Fuping mafic granulites: implications for tectonic evolution of the central zone of the North China craton ' , Journal of Metamorphic Geology , vol. 18 , no. 4 , pp. 375-391 . |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/petrology-and-pt-path-of-the-fuping-mafic-granulites-implications-for-tectonic-evolution-of-the-central-zone-of-the-north-china-craton(a133677c-7897-4459-8797-d5f0c509374a).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1810488803977068544 |