The timing of ultrahigh-temperature metamorphism in Southern India: U–Th–Pb electron microprobe ages from zircon and monazite in sapphirine-bearing granulites

Santosh, M.; Collins, Alan S.; Tamashiro, Iwao; Koshimoto, Saori; Tsutsumi, Yukiyasu; Yokoyama, Kenichi

doi:10.1016/j.gr.2005.12.005

Cited by 142 publications

(73 citation statements)

References 27 publications

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“…, Sajeev et al, 2007;Santosh et al, 2009aSantosh et al, , 2012Shimizu et al, 2013a, b;Iwamura et al, 2013 CO 2 , Tsunogae et al, 2002Tsunogae et al, , 2008aOhyama et al, 2008-Satish-Kumar et al, 2002Nakano et al, 2011 TiO 2 Kawasaki and Motoyoshi, 2016TIMS Asami et al, 1998Grew et al, 2001;Osanai et al, 2001a;Suzuki et al, 2001Suzuki et al, , 2006, Santosh et al, 2006aMiyamoto et al, 2006;Hokada and Motoyoshi, 2006 2000 SHRIMP LA-ICP-MS EPMA 2010 Baba et al, 2010Baba et al, , 2012Sajeev et al, 2010;Sato et al, 2010;Bose et Liu et al, 2012;Santosh et al, 2012;Koizumi et al, 2014;Santosh et al, 2014;Yang et al, 2014a, b;Takamura et al, 2015;Hokada et al, 2016;Osanai et al, 2016a, b;Owada et al, 2016 --25 -2.5 Ga ; , Osanai et al, 1999a;Hokada et al, 2004, 1.9 Ga ;, Baba, 1998, Baba et al, 2012Santosh et al, 2012 25 40 km , Mints et al, 2010;…”

Section: °C 1 Gpamentioning

confidence: 99%

Recent progress in lower crustal process:

Osanai

Nakano

Adachi

2017

Jour. Geol. Soc. Japan

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Ultrahigh-temperature (UHT) and ultrahigh-pressure metamorphism indicate extreme metamorphic conditions in regional metamorphic settings. In particular, the metamorphic temperature of UHT metamorphism is the highest limit of crustal metamorphism, exceeding °C and is equivalent to the temperature of basaltic magma. Typical UHT metamorphic rocks have Mg-Al-rich bulk chemical compositions and are easily identified by a characteristic mineral assemblage of sapphirine + quartz garnet, orthopyroxene + sillimanite quartz, or garnet + osumilite + quartz. Precise reconstruction of the metamorphic evolution of UHT metamorphic rocks on the basis of metamorphic reaction textures, mineral inclusion studies, pressure-temperature estimations, and micro-geochronological analyses is a powerful tool for understanding orogenic processes.

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Section: °C 1 Gpamentioning

confidence: 99%

Recent progress in lower crustal process:

Osanai

Nakano

Adachi

2017

Jour. Geol. Soc. Japan

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“…Granulite localities (red diamonds) in East African Orogen are after (1) Coolen, Priem, Verdurmen, and Verschure (1982), (2) Maboko and Nakamura (1996) and Muhongo, Kröner, and Nemchin (2001), (3) Kroner et al (1997), (4) Macey et al (2013), (5) Möller , Mezger, and Schenk (2000), (6) Jöns and Schenk (2008), (7) Hauzenberger et al (2007), (8) and Collins, Clark, and Plavsa (2014); (9) Pant et al (2013), (10) Adachi et al (2013) and (11) Hokada et al (2013). Granulite localities (blue squares) in Kuunga Orogen are after (1): Kröner, Willner, Hegner, Jaeckel, and Nemchin (2001), (2) Johnson, Rivers, and De Waele (2005), (3) Hauzenberger, Bauernhofer, oinkes, Wallbrecher, andMathu (2004, Hauzenberger et al, 2007), (4) Küster, Utke, Leupolt, Lenoir, and Haider (1990) and Lenoir et al (1994), (5) Berger et al (2006), Collins (2006), Grégoire et al (2009 and Giese, Berger, Schreurs, andGnos (2011), (6) Markl, Bauerle, andGrujic (2000); (7) Jung, Jung, Kröner, and Kröner (2007), (8) Sajeev et al (2007) and (9) Fonarev, Konilov, and Santosh (2000), Santosh et al (2006) and Collins et al (2014); AM: Armorican Massif, A-A: Afif-Abas Terrane, ANS: Arabian-Nubian Shield, Az: Azania, BS: Betsimisaraka Suture, Cr: Carolina, Fl: Florida, FMC: French Massif Centrals, IB: Iberian Massif, MB: Mozambique Belt, PCS: Palghat-Cauvery Suture, R Plata: Rio de la Plata, S F...…”

Section: Introductionmentioning

confidence: 99%

Late Neoproterozoic granulite facies metamorphism in the Menderes Massif, Western Anatolia/Turkey: implication for the assembly of Gondwana

Koralay

2015

Geodinamica Acta

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The Menderes Massif is a major polymetamorphic complex in Western Turkey. The late Neoproterozoic basement consists of partially migmatized paragneisses and metapelites in association with orthogneiss intrusions. Pelitic granulite, paragneiss and orthopyroxene-bearing orthogneiss (charnockite) of the basement series form the main granulite-facies lithologies. Charnockitic metagranodiorite and metatonalite are magnesian in composition and show calc-alkalic to alkali-calcic affinities. Nd and Sr isotope systematics indicate homogeneous crustal contamination. The zircons in charnockites contain featureless overgrowth and rim textures representing metamorphic growth on magmatic cores and inherited grains. Charnockites yield crytallization age of~590 Ma for protoliths and they record granulite-facies overprint at~580 Ma. These data indicate that the Menderes Massif records late Neoproterozoic magmatic and granulite-facies metamorphic events. Furthermore, the basement rocks have been overprinted by Eocene Barrovian-type Alpine metamorphism at~42 Ma. The geochronological data and inferred latest Neoproterozoic-early Cambrian palaeogeographic setting for the Menderes Massif to the north of present-day Arabia indicate that the granulite-facies metamorphism in the Menderes Massif can be attributed to the Kuunga Orogen (600-500 Ma) causing the final amalgamation processes for northern part of the Gondwana.

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“…Their results were interpreted to indicate the Neoarchean age of ~ 2530 Ma for the magmatic protoliths which was subjected to high -grade metamorphism at ~ 2480 Ma soon after the formation of the protoliths. On the other hand, the crustal fragments of the SGT to the south of the Salem Block preserve the common imprint of a major thermal event during the latest Neoproterozoic -Cambrian (e.g., Miller et al, 1996;Bartlett et al, 1998;Bhaskar Rao et al, 2003;Santosh et al, 2003Santosh et al, , 2006Collins et al, 2007aCollins et al, , 2007b.…”

Section: Introductionmentioning

confidence: 99%

Laser ablation ICP mass spectrometry for zircon U-Pb geochronology of metamorphosed granite from the Salem Block: Implication for Neoarchean crustal evolution in southern India

Sato

Santosh

Tsunogae

et al. 2011

Journal of Mineralogical and Petrological Sciences

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We report here petrological characteristics of metamorphosed granite and metagabbro from the Kanja Malai hills, the southern margin of the Salem Block in southern India. Field observations suggest that both these rock types experienced high -grade metamorphism, and exhibit strong foliation. Many of cores of zircons extracted from the granite show an internal structure suggesting magmatic crystallization. In contrast, rims of the zircons commonly display metamorphic overgrowth. We also present geochronological data utilizing laser ablation ICP mass spectrometry technique on the zircons that show the weighted means of 207 Pb/ 206 Pb age of 2647 ± 11 Ma (error: 1σ) for the timing of magmatism, and 2442 ± 20 Ma (error: 1σ) for the subsequent high -grade metamorphism. Together with a previous geochronological study on charnockites from the Salem Block, our results also provide an important constraint on the Neoarchean magmatism (2.65 -2.53 Ga) in southern India, correlating the magmatism with a major global crust formation event during the Neoarchean.

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The timing of ultrahigh-temperature metamorphism in Southern India: U–Th–Pb electron microprobe ages from zircon and monazite in sapphirine-bearing granulites

Cited by 142 publications

References 27 publications

Recent progress in lower crustal process:

Recent progress in lower crustal process:

Late Neoproterozoic granulite facies metamorphism in the Menderes Massif, Western Anatolia/Turkey: implication for the assembly of Gondwana

Laser ablation ICP mass spectrometry for zircon U-Pb geochronology of metamorphosed granite from the Salem Block: Implication for Neoarchean crustal evolution in southern India

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