Show simple item record

dc.contributor.authorClark, Christopher
dc.contributor.authorHealy, D.
dc.contributor.authorJohnson, Tim
dc.contributor.authorCollins, A.
dc.contributor.authorTaylor, Richard
dc.contributor.authorSantosh, M.
dc.contributor.authorTimms, Nicholas Eric
dc.identifier.citationClark, C. and Healy, D. and Johnson, T. and Collins, A. and Taylor, R. and Santosh, M. and Timms, N.E. 2015. Hot orogens and supercontinent amalgamation: A Gondwanan example from southern India. Gondwana Research. 28 (4): pp. 1310-1328.

The Southern Granulite Terrane in southern India preserves evidence for regional-scale high to ultrahigh temperature metamorphism related to the amalgamation of the supercontinent Gondwana. Here we present accessory mineral (zircon and monazite) geochronological and geochemical datasets linked to the petrological evolution of the rocks as determined by phase equilibria modelling. The results constrain the duration of high to ultrahigh temperature (> 900 °C) metamorphism in the Madurai Block to be c. 40 Ma with peak conditions achieved c. 60 Ma after the formation of an orogenic plateau related to the collision of the microcontinent Azania with East Africa at c. 610 Ma. A 1D numerical model demonstrates that the attainment of temperatures > 900 °C requires that the crust be moderately enriched in heat producing elements and that the duration of the orogenic event is sufficiently long to allow conductive heating through radioactive decay. Both of these conditions are met by the available data for the Madurai Block. Our results constrain the length of time it takes for the crust to evolve from collision to peak P–T (i.e. the prograde heating phase) then back to the solidus during retrogression. This evolution illustrates that not all metamorphic ages date sutures.

dc.publisherElsevier BV
dc.subjectGondwana supercontinent
dc.subjectPhase equilibria modelling
dc.subjectHigh temperature metamorphism
dc.subjectSouthern India
dc.subjectU–Pb geochronology
dc.titleHot orogens and supercontinent amalgamation: A Gondwanan example from southern India
dc.typeJournal Article
dcterms.source.titleGondwana Research
curtin.departmentDepartment of Applied Geology
curtin.accessStatusOpen access

Files in this item


This item appears in the following Collection(s)

Show simple item record