Palaeoproterozoic to Mesoproterozoic Geology of North Queensland

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Deformation & metamorphismReconciling the regional analysis and SHRIMP dating with the JCU detailed studiesis difficult, but allowing for the statistics for the CHIME dates being somewhatrubbery, the following is a possibility• Possible metamorphic and deformation pre-1675Ma (post 1690Ma?) in theEinasleigh Metamorphics• D1 - N-S shortening at ~1620Ma• D2 – E-W shortening at ~1590Mamedium P-T metamorphism• Uplift and retrogressive metamorphism sometime between 1590 and 1560Ma• D3 - NW-SE shortening and low pressure-high temperature metamorphism at1560-1550Ma, associated with main metamorphic zircon growth andemplacement of Forsayth Batholith and Croydon Volcanic Group and EsmeraldaSuite• D4 – possibly 1510Ma• Subsequent Palaeozoic events
Palaeoproterozoic-Mesoproterozoic Stratigraphy – Georgetown regionCroydon VolcGroupYarman FmMalacura Fm~1786Ma~1785MaEsmeraldaSupersuiteLangdon River MdstRobertsonRiver SGp1663±13MaCandlow FmLanglovaleGroup ~1625MaHeliman FmTownley FmLane Ck FmCorbett FmDead Horse MetabsltDaniel Creek FmBernecker Ck FmD3 1550-1560Ma~1655Ma~1550Ma~1650MaCobbold Metadolerite1656±2Mabiotite gneissEtheridgeGroupForsaythSupersuiteD1/D2 1620-1590Maamphibolite1675±3MaEinasleigh Metamorphics~1550-1560MaMagmatic ageMax dep ageJuntalaMetsCassidy CkMets~1695Ma~1845Ma1685-1695Maorthogneisscalc-silicate gneissleucogneiss~1705Ma
Page 1 and 2: Australian GovernmentGeoscience Aus
Page 3 and 4: Tasman LineCOENINLIERDeep crustalse
Page 5 and 6: 50 kmSurface Geology - Georgetown r
Page 7 and 8: Proterozoic Stratigraphic Units - S
Page 9 and 10: Bernecker Creek Formation• Calcar
Page 11 and 12: Daniel Creek Formation• Very fine
Page 13 and 14: Dead Horse Metabasalt• Aphyric th
Page 15 and 16: Corbett Formation• Predominantly
Page 17 and 18: Lane Creek Formation• Mudstone an
Page 19 and 20: Cobbold Metadolerite• Mostly sill
Page 21 and 22: Cobbold Metadolerite• Mostly sill
Page 23 and 24: Townley Formation• Mudstone, silt
Page 25 and 26: Heliman Formation• Mudstone and s
Page 27 and 28: Langdon River Mudstone• Laminated
Page 31 and 32: Langlovale Group• Malacura Sandst
Page 33 and 34: Palaeoproterozoic-Mesoproterozoic S
Page 35 and 36: Croydon Volcanic Group• Dominated
Page 37 and 38: Inorunie Group• Unconformably ove
Page 41 and 42: Einasleigh Metamorphics• Psammope
Page 43 and 44: Einasleigh Metamorphics• Psammope
Page 45 and 46: Proterozoic solid geology - Georget
Page 47 and 48: Proterozoic structural domains & so
Page 49 and 50: Robertson River areaDeformation & m
Page 51: Deformation & metamorphismLangloval
Page 55 and 56: Other Proterozoic Inliers - norther
Page 57 and 58: Tasman LineCOENINLIEROther Proteroz
Page 59 and 60: Other Proterozoic Inliers - Yambo
Page 61 and 62: Other Proterozoic Inliers - Coen•
Page 63 and 64: Correlations between InliersEtherid
Page 65 and 66: Correlating Georgetown and Mt Isa S
Page 67: Correlating Georgetown and Mt Isa S

Palaeoproterozoic to Mesoproterozoic Geology of North Queensland

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