The discovery of eclogite-high-pressure granulite association from Hainan Island, South China

XIA Mengmeng; HU Juan; HU Daogong; LIU Xiaochun

2019 Vol. 38, No. 10

Article Contents

Article navigation > Geological Bulletin of China > 2019 > 38(10): 1591-1594

Next Article Previous Article

XIA Mengmeng, HU Juan, HU Daogong, LIU Xiaochun. The discovery of eclogite-high-pressure granulite association from Hainan Island, South China[J]. Geological Bulletin of China, 2019, 38(10): 1591-1594.

Citation:

XIA Mengmeng, HU Juan, HU Daogong, LIU Xiaochun. The discovery of eclogite-high-pressure granulite association from Hainan Island, South China[J]. Geological Bulletin of China, 2019, 38(10): 1591-1594.

The discovery of eclogite-high-pressure granulite association from Hainan Island, South China

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources, Beijing 100081, China

More Information

Corresponding author: LIU Xiaochun, liuxchqw@cags.ac.cn

Received Date: 02 April 2019

Revised Date: 18 August 2019

Publish Date: 15 October 2019

Abstract

Abstract

An eclogite-high-pressure (HP) granulite association were firstly discovered in the Mulantou area, northeastern Hainan Island, South China. The HP rocks occur in the coastal intertidal zone, and consist mainly of garnet, omphacite, hornblende, quartz and rutile, with or without zoisite or plagioclase. Peak p-t conditions of the rocks obtained by conventional geothermobarometers are about 800~850° C and >1.5GPa. U-Pb zircon dating yields metamorphic ages of about 340~300Ma. The occurrence of HP granulite-eclogite association is of great significance for understanding the tectonic affinity of Hainan Island and the tectonic evolution of the eastern Paleo-Tethys.
- eclogite /
- high-pressure granulite /
- Hainan Island

FullText(HTML)

References

[1]	杨经绥, 许志琴, 张建新, 等.中国主要高压-超高压变质带的大构造背景及俯冲/折返机制的探讨[J].岩石学报, 2009, 25(7):1529-1560. Google Scholar
[2]	Yan Q S, Metcalfe I, Shi X F, et al. U-Pb isotope geochronology and geochemistry of granites from Hainan Island (northern South China Sea margin):Constraints on late Paleozoic-Mesozoic tectonic ev-olution[J]. Gondwana Research, 2017, 49:333-349. doi: 10.1016/j.gr.2017.06.007 CrossRef Google Scholar
[3]	Li X H, Zhou H W, Chung S L, et al. Geochemical and Sm-Nd isotopic characteristics of metabasites from central hainan island, South China and their tectonic significance[J]. Island Arc, 2002, 11(3):193-205. doi: 10.1046/j.1440-1738.2002.00365.x CrossRef Google Scholar
[4]	Shen L W, Yu J H, O'Reilly, et al. Subduction-related middle Permian to early Triassic magmatism in central Hainan Island, South China[J]. Lithos, 2018, 318/319:158-175. doi: 10.1016/j.lithos.2018.08.009 CrossRef Google Scholar
[5]	张业明, 张仁杰, 姚华舟.海南岛前寒武纪地壳构造演化[J].地球科学, 1997, 22(4):395-400. Google Scholar
[6]	汪啸风, 马大铨, 蒋大海.海南岛地质(一)——地层古生物[M].北京:地质出版社, 1991. Google Scholar
[7]	汪啸风, 马大铨, 蒋大海.海南岛地质(三)——构造地质[M].北京:地质出版社, 1991. Google Scholar
[8]	广东省地质矿产局.广东省区域地质志[M].北京:地质出版社, 1988. Google Scholar
[9]	龙文国, 童金南, 朱耀河, 等.海南儋州-屯昌地区二叠纪地层的发现及其意义[J].华南地质与矿产, 2007, 1:38-45. doi: 10.3969/j.issn.1007-3701.2007.01.007 CrossRef Google Scholar
[10]	李孙雄, 云平, 范渊, 等.海南岛琼中地区琼中岩体锆石U-Pb年龄及其地质意义[J].大地构造与成矿学, 2005, 29(2):227-233. doi: 10.3969/j.issn.1001-1552.2005.02.010 CrossRef Google Scholar
[11]	Li X H, Li Z X, Li W X, et al. Initiation of the Indosinian Orogeny in South China:evidence for a Permian magmatic arc on Hainan Island[J]. The Journal of Geology, 2006, 114(3):341-353. doi: 10.1086/501222 CrossRef Google Scholar
[12]	Powell R. Regression diagnostics and robust regression in geothermometer/geobarometer calibration:the garnet-clinopyroxene geothermometer revisited[J]. Journal of Metamorphic Geology, 1985, 3(3):231-243. doi: 10.1111/j.1525-1314.1985.tb00319.x CrossRef Google Scholar
[13]	Krogh E J. The garnet-clinopyroxene Fe-Mg geothermometer-a reinterpretation of existing experimental data[J]. Contributions to Mineralogy and Petrology, 1988, 99(1):44-48. doi: 10.1007/BF00399364 CrossRef Google Scholar
[14]	Carswell D A, Harley S L. Mineral barometry and thermometry[C]//Carswell D A. Eclogite Facies Rocks. Blackie, Glasgow London, 1990: 83-110. Google Scholar
[15]	李静, 孙载波, 黄亮, 等.滇西勐库退变榴辉岩的p-T-t轨迹及其地质意义[J].岩石学报, 2017, 33(7):2285-2301. Google Scholar
[16]	孙载波, 李静, 周坤, 等.滇西勐库地区退变质榴辉岩锆石U-Pb年龄及其地质意义[J].地质通报, 2018, 37(11):2032-2043. Google Scholar
[17]	Wang H N, Liu F L, Li J, et al. Petrology, geochemistry and p-T-t path of lawsonite-bearing retrograded eclogites in the ChangningMenglian orogenic belt, southeast Tibetan Plateau[J]. Journal of Metamorphic Geolgoy, 2019, 37:439-478. doi: 10.1111/jmg.12462 CrossRef Google Scholar
[18]	Nakano N, Osanai Y, Minh N T, et al. Discovery of high-pressure granulite-facies metamorphism in northern Vietnam:Constraints on the Permo-Triassic Indochinese continental collision tectonics[J]. Comptes Rendus Geoscience, 2008, 340(2/3):127-138. Google Scholar
[19]	Zhang R Y, Lo C H, Chung S L, et al. Origin and tectonic implication of ophiolite and eclogite in the Song Ma suture zone between the South China and Indochina blocks[J]. Journal of Metamorphic Geology, 2013, 31(1):49-62. doi: 10.1111/jmg.12012 CrossRef Google Scholar
[20]	Metcalfe I. Gondwana dispersion and Asian accretion:tectonic and palaeogeographic evolution of eastern Tethys[J]. Journal of Asian Earth Sciences, 2013, 66:1-33. doi: 10.1016/j.jseaes.2012.12.020 CrossRef Google Scholar
[21]	何慧莹, 王岳军, 张玉芝, 等.海南岛晨星早石炭世高度亏损N-MORB型玄武岩及其地质意义[J].地球科学, 2016, 41(8):1361-1375. Google Scholar
[22]	Yao W H, Li Z X, Li W X, et al. Proterozoic tectonics of Hainan Island in supercontinent cycles:New insights from geochronological and isotopic results[J]. Precambrian Research, 2017, 290:86-100. doi: 10.1016/j.precamres.2017.01.001 CrossRef Google Scholar
[23]	Wang Y J, Qian X, Cawood P A, et al. Closure of the East Paleotethyan Ocean and amalgamation of the Eastern Cimmerian and Southeast Asia continental fragments[J]. Earth-Science Reviews, 2018, 186:195-230. doi: 10.1016/j.earscirev.2017.09.013 CrossRef Google Scholar