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Pillow basalt, dolerite sills, and doleritic dykes are the major products of volcanism in the Granites-Tanami Orogen, and provide a window for understanding the magmatism and tectonic evolution of the orogen. The pillow basalt and dolerite sills from the Stubbins Formation have similar geochemical features, suggesting that they are genetically related. The pillow basalt and dolerite sills (ca. 1864Ma)...
The Paleoproterozoic Granites-Tanami Orogen (GTO) consists of tightly folded, predominantly greenschist facies rocks. The orogen, a component of the North Australian Craton includes a ca. 1864Ma succession of turbiditic and pelagic sedimentary rocks interbedded with volcanic rocks and abundant dolerite sills in a back-arc basin setting, which is intruded by collision-related ca. 1800Ma granitic rocks...
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