Geochronology and REE geochemistry of zircon and garnet in pelitic gneisses from the Higo metamorphic terrane, Kyushu, Japan: Constraints on the timing of high-temperature metamorphism

Vuong Bui Thi Sinh, Yasuhito Osanai, Nobuhiko Nakano, Tatsuro Adachi, Ippei Kitano

Research output: Contribution to journalArticle

Abstract

The Higo metamorphic terrane in west-central Kyushu, southwest Japan, consists of a sequence of greenschist- to granulite-facies metamorphic rocks. This study reports the U-Pb Zrn ages and rare earth elements (REE) characteristics of Zrns and Grts from pelitic gneisses in the Higo metamorphic terrane to constrain its timing of high-temperature metamorphism. Based on the morphology, internal textures, occurrences, Th/U ratios, REE patterns and ages of Zrn, and the heavy REE (HREE) partition coefficient between Zrn and Grt, the results indicate that the prograde metamorphism occurred at ~ 120 Ma immediately after precursor deposition at 120- 130 Ma and peak metamorphic conditions were attained during the period between 110 and 120 Ma. The ~ 110 Ma age might be indicative of the onset of cooling and exhumation after the peak metamorphic stage. Retrograde metamorphism continued at least to 105 Ma as obtained from Zrns in the granitic intrusion.

Original languageEnglish
Pages (from-to)47-59
Number of pages13
JournalJournal of Mineralogical and Petrological Sciences
Volume114
Issue number2
DOIs
Publication statusPublished - Apr 1 2019

Fingerprint

geochronology
geochemistry
garnets
terrane
Japan
garnet
zircon
rare earth element
metamorphism
rare earth elements
time measurement
prograde metamorphism
retrograde metamorphism
metamorphic rocks
greenschist
granulite facies
partition coefficient
intrusion
exhumation
metamorphic rock

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geology

Cite this

@article{2d8ce30174e940f2a6cfe330f31da3fc,
title = "Geochronology and REE geochemistry of zircon and garnet in pelitic gneisses from the Higo metamorphic terrane, Kyushu, Japan: Constraints on the timing of high-temperature metamorphism",
abstract = "The Higo metamorphic terrane in west-central Kyushu, southwest Japan, consists of a sequence of greenschist- to granulite-facies metamorphic rocks. This study reports the U-Pb Zrn ages and rare earth elements (REE) characteristics of Zrns and Grts from pelitic gneisses in the Higo metamorphic terrane to constrain its timing of high-temperature metamorphism. Based on the morphology, internal textures, occurrences, Th/U ratios, REE patterns and ages of Zrn, and the heavy REE (HREE) partition coefficient between Zrn and Grt, the results indicate that the prograde metamorphism occurred at ~ 120 Ma immediately after precursor deposition at 120- 130 Ma and peak metamorphic conditions were attained during the period between 110 and 120 Ma. The ~ 110 Ma age might be indicative of the onset of cooling and exhumation after the peak metamorphic stage. Retrograde metamorphism continued at least to 105 Ma as obtained from Zrns in the granitic intrusion.",
author = "Sinh, {Vuong Bui Thi} and Yasuhito Osanai and Nobuhiko Nakano and Tatsuro Adachi and Ippei Kitano",
year = "2019",
month = "4",
day = "1",
doi = "10.2465/jmps.181115",
language = "English",
volume = "114",
pages = "47--59",
journal = "Journal of Mineralogical and Petrological Sciences",
issn = "1345-6296",
publisher = "Tohoku University",
number = "2",

}

TY - JOUR

T1 - Geochronology and REE geochemistry of zircon and garnet in pelitic gneisses from the Higo metamorphic terrane, Kyushu, Japan

T2 - Constraints on the timing of high-temperature metamorphism

AU - Sinh, Vuong Bui Thi

AU - Osanai, Yasuhito

AU - Nakano, Nobuhiko

AU - Adachi, Tatsuro

AU - Kitano, Ippei

PY - 2019/4/1

Y1 - 2019/4/1

N2 - The Higo metamorphic terrane in west-central Kyushu, southwest Japan, consists of a sequence of greenschist- to granulite-facies metamorphic rocks. This study reports the U-Pb Zrn ages and rare earth elements (REE) characteristics of Zrns and Grts from pelitic gneisses in the Higo metamorphic terrane to constrain its timing of high-temperature metamorphism. Based on the morphology, internal textures, occurrences, Th/U ratios, REE patterns and ages of Zrn, and the heavy REE (HREE) partition coefficient between Zrn and Grt, the results indicate that the prograde metamorphism occurred at ~ 120 Ma immediately after precursor deposition at 120- 130 Ma and peak metamorphic conditions were attained during the period between 110 and 120 Ma. The ~ 110 Ma age might be indicative of the onset of cooling and exhumation after the peak metamorphic stage. Retrograde metamorphism continued at least to 105 Ma as obtained from Zrns in the granitic intrusion.

AB - The Higo metamorphic terrane in west-central Kyushu, southwest Japan, consists of a sequence of greenschist- to granulite-facies metamorphic rocks. This study reports the U-Pb Zrn ages and rare earth elements (REE) characteristics of Zrns and Grts from pelitic gneisses in the Higo metamorphic terrane to constrain its timing of high-temperature metamorphism. Based on the morphology, internal textures, occurrences, Th/U ratios, REE patterns and ages of Zrn, and the heavy REE (HREE) partition coefficient between Zrn and Grt, the results indicate that the prograde metamorphism occurred at ~ 120 Ma immediately after precursor deposition at 120- 130 Ma and peak metamorphic conditions were attained during the period between 110 and 120 Ma. The ~ 110 Ma age might be indicative of the onset of cooling and exhumation after the peak metamorphic stage. Retrograde metamorphism continued at least to 105 Ma as obtained from Zrns in the granitic intrusion.

UR - http://www.scopus.com/inward/record.url?scp=85065608493&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065608493&partnerID=8YFLogxK

U2 - 10.2465/jmps.181115

DO - 10.2465/jmps.181115

M3 - Article

AN - SCOPUS:85065608493

VL - 114

SP - 47

EP - 59

JO - Journal of Mineralogical and Petrological Sciences

JF - Journal of Mineralogical and Petrological Sciences

SN - 1345-6296

IS - 2

ER -