High-K granites of the Rum Jungle Complex, N-Australia: Insights into the Late Archean crustal evolution of the North Australian Craton

Petrogenesis of high-K metagranites in the Kerala Khondalite Belt, southern India: a possible magmatic-arc link between India, Sri Lanka, and Madagascar

“…Thus, the composition of high-K metagranites is consistent with their derivation through melting of middle to lower tonalitic crust. There are known examples of K-rich granitoids generated by melting of tonalite-trondhjemite-granodiorite (TTG) gneisses (Frost et al, 1998;Moyen et al, 2003;Shang et al, 2007;Drüppel et al, 2009). Experimental results indicate derivation of high-K, calc-alkaline magmas on the partial melting of hydrous, calc-alkaline mafic to intermediate metamorphic rocks having TTG affinity (Carroll and Wyllie, 1989;Johnston, 1992, 1993;Roberts and Clemens, 1993;Singh and Johannes, 1996;Watkins et al, 2007).…”

Geochronology and geochemistry of 2.5 to 2.4Ga granitic plutons from the southern margin of the North China Craton: Implications for a tectonic transition from arc to post-collisional setting

“…TTG assemblages and greenstone belts provide important constraints for the evolution of Precambrian continental crust (Polat et al, 2011;Zhai and Santosh, in press). On the other hand, wide-spread K-rich GGM suites have been considered to be closely related to craton stabilization process, such as those reported in the Rum Jungle Complex of the North Australia Craton (Drüppel et al, 2009) and the Wyoming Craton in North America (Frost et al, 1998). Many K-rich GGM suites are younger than 2.65 Ga, and record a distinct change in the tectonic-thermal regime of the crust.…”

Low δ18O zircon grains in the Neoarchean Rum Jungle Complex, northern Australia: An indicator of emergent continental crust

“…2020 Ma Woodcutters Supergroup by a major unconformity (Needham et al, 1988). The Rum Jungle Complex consists mainly of syenogranite, monzogranite, and quartz monzonite (Drüppel et al, 2009), intruded by pegmatites, dolerite, and quartz tourmaline veins (Lally, 2002). The Rum Jungle Complex includes enclaves of amphibolite-facies metasedimentary rocks of the Stanley Metamorphics, which include biotite gneiss, biotite-muscovite gneiss, biotite granofels, feldspathic gneiss, quartz-muscovite schist, chlorite schist, actinolite schist, and banded ironstone, which were deformed and metamorphosed to amphibolite facies prior to being incorporated into the Rum Jungle Complex, and which are variably retrogressed (Rhodes, 1965;Lally, 2002).…”