Late Cretaceous age of eclogite facies metamorphism of the Sanbagawa belt in the Asemi River area, Shikoku (SW Japan): Evidence from detrital zircon

Ulrich Knittel, Monika Walia, Shigeyuki Suzuki, Yuan Hsi Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Within the Sanbagawa metamorphic belt, the timing of high-pressure and retrograde metamorphism is controversial. Recently, an area in the Asemi River region (central Shikoku, Japan) was delineated that had been subjected to ecologite facies metamorphism prior to retrograde metamorphism in the epidote-amphibolite facies which provides a new opportunity to constrain the age of high-pressure metamorphism. Detrital zircon from this area yields ages as young as 84 ± 4 Ma. Hence, the protoliths were deposited not earlier than ca. 88 Ma and thus, eclogite facies and retrograde metamorphism occurred after 88 Ma, probably at 86–82 Ma as indicated by the age of metamorphic zircon and K-Ar and Ar-Ar ages for white mica.

Original languageEnglish
Pages (from-to)48-51
Number of pages4
JournalJournal of Asian Earth Sciences
Volume177
DOIs
Publication statusPublished - Jun 15 2019

Fingerprint

eclogite
retrograde metamorphism
zircon
metamorphism
Cretaceous
river
epidote
protolith
amphibolite facies
mica

Keywords

  • Detrital zircons
  • Eclogite
  • Metamorphism
  • Sanbagawa Belt

ASJC Scopus subject areas

  • Geology
  • Earth-Surface Processes

Cite this

Late Cretaceous age of eclogite facies metamorphism of the Sanbagawa belt in the Asemi River area, Shikoku (SW Japan) : Evidence from detrital zircon. / Knittel, Ulrich; Walia, Monika; Suzuki, Shigeyuki; Lee, Yuan Hsi.

In: Journal of Asian Earth Sciences, Vol. 177, 15.06.2019, p. 48-51.

Research output: Contribution to journalArticle

@article{a330984dcc2949168f95b84684ed93e1,
title = "Late Cretaceous age of eclogite facies metamorphism of the Sanbagawa belt in the Asemi River area, Shikoku (SW Japan): Evidence from detrital zircon",
abstract = "Within the Sanbagawa metamorphic belt, the timing of high-pressure and retrograde metamorphism is controversial. Recently, an area in the Asemi River region (central Shikoku, Japan) was delineated that had been subjected to ecologite facies metamorphism prior to retrograde metamorphism in the epidote-amphibolite facies which provides a new opportunity to constrain the age of high-pressure metamorphism. Detrital zircon from this area yields ages as young as 84 ± 4 Ma. Hence, the protoliths were deposited not earlier than ca. 88 Ma and thus, eclogite facies and retrograde metamorphism occurred after 88 Ma, probably at 86–82 Ma as indicated by the age of metamorphic zircon and K-Ar and Ar-Ar ages for white mica.",
keywords = "Detrital zircons, Eclogite, Metamorphism, Sanbagawa Belt",
author = "Ulrich Knittel and Monika Walia and Shigeyuki Suzuki and Lee, {Yuan Hsi}",
year = "2019",
month = "6",
day = "15",
doi = "10.1016/j.jseaes.2019.03.003",
language = "English",
volume = "177",
pages = "48--51",
journal = "Journal of Asian Earth Sciences",
issn = "1367-9120",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Late Cretaceous age of eclogite facies metamorphism of the Sanbagawa belt in the Asemi River area, Shikoku (SW Japan)

T2 - Evidence from detrital zircon

AU - Knittel, Ulrich

AU - Walia, Monika

AU - Suzuki, Shigeyuki

AU - Lee, Yuan Hsi

PY - 2019/6/15

Y1 - 2019/6/15

N2 - Within the Sanbagawa metamorphic belt, the timing of high-pressure and retrograde metamorphism is controversial. Recently, an area in the Asemi River region (central Shikoku, Japan) was delineated that had been subjected to ecologite facies metamorphism prior to retrograde metamorphism in the epidote-amphibolite facies which provides a new opportunity to constrain the age of high-pressure metamorphism. Detrital zircon from this area yields ages as young as 84 ± 4 Ma. Hence, the protoliths were deposited not earlier than ca. 88 Ma and thus, eclogite facies and retrograde metamorphism occurred after 88 Ma, probably at 86–82 Ma as indicated by the age of metamorphic zircon and K-Ar and Ar-Ar ages for white mica.

AB - Within the Sanbagawa metamorphic belt, the timing of high-pressure and retrograde metamorphism is controversial. Recently, an area in the Asemi River region (central Shikoku, Japan) was delineated that had been subjected to ecologite facies metamorphism prior to retrograde metamorphism in the epidote-amphibolite facies which provides a new opportunity to constrain the age of high-pressure metamorphism. Detrital zircon from this area yields ages as young as 84 ± 4 Ma. Hence, the protoliths were deposited not earlier than ca. 88 Ma and thus, eclogite facies and retrograde metamorphism occurred after 88 Ma, probably at 86–82 Ma as indicated by the age of metamorphic zircon and K-Ar and Ar-Ar ages for white mica.

KW - Detrital zircons

KW - Eclogite

KW - Metamorphism

KW - Sanbagawa Belt

UR - http://www.scopus.com/inward/record.url?scp=85063112249&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063112249&partnerID=8YFLogxK

U2 - 10.1016/j.jseaes.2019.03.003

DO - 10.1016/j.jseaes.2019.03.003

M3 - Article

AN - SCOPUS:85063112249

VL - 177

SP - 48

EP - 51

JO - Journal of Asian Earth Sciences

JF - Journal of Asian Earth Sciences

SN - 1367-9120

ER -