Palaeoproterozoic to Mesoproterozoic Geology of North Queensland
Palaeoproterozoic to Mesoproterozoic Geology of North Queensland
Palaeoproterozoic to Mesoproterozoic Geology of North Queensland
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Heliman Formation• Muds<strong>to</strong>ne and silts<strong>to</strong>ne, locally carbonaceous; abundantsiliceous silts<strong>to</strong>ne and fine-grained sands<strong>to</strong>ne, commonlywith mudclasts• Deep water???• MDA ~1655 Ma• Minor Archaean- earliest <strong>Palaeoproterozoic</strong> component (8%)201816mda = 1655 ± 3 MaHeliman Formation2007169006All; n=7714Number121086Relative probability4201500 1700 1900 2100 2300 2500 2700 2900Age (Ma)
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