Field occurrences and petrology of eclogites from the Dabie Mountains, Anhui, central China

X. Wang, Y. Jing, J. G. Liou, G. Pan, W. Liang, M. Xia, S. Maruyama

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Four distinct types of eclogites are recognized according to their field occurrences and mineral parageneses in a gneiss terrane of the Dabie Mountains, a collision zone between the Sino-Korean and Yangtze cratons in central China. Some eclogites contain coesite and its quartz pseudomorphs enclosed in garnet and omphacite. Type I eclogites occur as layers in serpentinites and contain garnet, clinopyroxene, orthopyroxene, phengite, rutile, and coesite pseudomorph. Type II eclogites occur as lenticular bodies inside serpentinites and contain garnet, clinopyroxene, quartz, rutile, and edenitic hornblende. Type III eclogites occur as blocks of 2 cm to 20 m in size in a matrix of hornblende gneiss and biotite gneiss, and Type IV eclogites occur as thin layers interbedded with amphibolites. P-T estimates for these different eclogites indicate that they were formed under different physical conditions. All the eclogites were affected by later regional metamorphism for which the P-T conditions are estimated. This paper provides an introduction to the abundant eclogites from central China which have not been reported previously in Western literature. Specifically, the mode of field occurrence, petrography, mineral chemistry and formation conditions of the four types of eclogites are described. The paper is thus designed to establish a petrological framework for future detailed studies of the eclogites and their country rocks in an ancient zone of collision.

Original languageEnglish
Pages (from-to)119-131
Number of pages13
JournalLithos
Volume25
Issue number1-3
DOIs
Publication statusPublished - Nov 16 1990
Externally publishedYes

Fingerprint

Petrology
Garnets
petrology
gneiss
garnet
coesite
Quartz
rutile
hornblende
clinopyroxene
mountain
Minerals
pseudomorph
Petrography
quartz
omphacite
phengite
collision zone
regional metamorphism
P-T conditions

ASJC Scopus subject areas

  • Geochemistry and Petrology

Cite this

Wang, X., Jing, Y., Liou, J. G., Pan, G., Liang, W., Xia, M., & Maruyama, S. (1990). Field occurrences and petrology of eclogites from the Dabie Mountains, Anhui, central China. Lithos, 25(1-3), 119-131. https://doi.org/10.1016/0024-4937(90)90010-X

Field occurrences and petrology of eclogites from the Dabie Mountains, Anhui, central China. / Wang, X.; Jing, Y.; Liou, J. G.; Pan, G.; Liang, W.; Xia, M.; Maruyama, S.

In: Lithos, Vol. 25, No. 1-3, 16.11.1990, p. 119-131.

Research output: Contribution to journalArticle

Wang, X, Jing, Y, Liou, JG, Pan, G, Liang, W, Xia, M & Maruyama, S 1990, 'Field occurrences and petrology of eclogites from the Dabie Mountains, Anhui, central China', Lithos, vol. 25, no. 1-3, pp. 119-131. https://doi.org/10.1016/0024-4937(90)90010-X
Wang, X. ; Jing, Y. ; Liou, J. G. ; Pan, G. ; Liang, W. ; Xia, M. ; Maruyama, S. / Field occurrences and petrology of eclogites from the Dabie Mountains, Anhui, central China. In: Lithos. 1990 ; Vol. 25, No. 1-3. pp. 119-131.
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