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The beginning of the Earths thermal evolution
When did the Earths core form?
Isotopes and the early evolution of the Earth
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accretion Appalachian Archean Arctic associated asthenosphere Atlantic back-arc basalts basement batholith calc-alkaline Cambrian Canadian Jour collision complex composition continental crust continental margin convection core cratons crustal deformation depth diapirs distribution early Earth Sci Eurekan evidence evolution facies faults Figure fluid formation fracture geochemical Geol geological Geophys gneisses granites granitoid greenstone belts Grenville heat Iapetus igneous intrusions island arc isotopic Jurassic Kuroko Lake late layer lead isotopic lithosphere mafic magma magnetic major massive sulphide deposits Mesozoic metamorphism Mineral Deposits Newfoundland North America northern occur oceanic crust Ontario ophiolitic Ordovician orogenic paleomagnetic Paleozoic partial melting phosphorites Planet plate boundaries plate motion plate tectonics plutons porphyry copper Precambrian Proterozoic Province ratios region Ridge Rifting Episode rotation sedimentary sediments seismic sequence silicate southern Strangway structures subduction zones suggest supracrustal Survey Canada Sverdrup Basin temperature terrane thermal thick tholeiitic tion trench velocity volcanic rocks western Wopmay