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... This formation consists of medium-coarse grained poorly sorted immature sandstone that grade upwards to siltstone and mudstone (Crispe et al., 2007;Joly et al., 2010;Li et al., 2014). Turbidites of the Killi Killi Formation are correlated with the Lander Rock Formation exposed in the adjacent Aileron Province (Crispe et J o u r n a l P r e -p r o o f Journal Pre-proof al., 2007;Goleby et al., 2009) to the southeast (Fig. 5). Seismic reflection interpretation and potential field modeling show that deposition of the Tanami Group occurred in a series of partially inverted half-graben (Aitken et al., 2018). ...
... During the waning stages of the Halls Creek Orogeny the ca 1832-1808 Ma granitic and gabbroic rocks of the Sally Downs Supersuite were emplaced. The Sally Downs Supersuite includes the Mabel Downs, Syenite Camp, and Kevins Dam suites (Sheppard et al., 2001), which are interpreted to have been derived from different crustal levels (Fraser et al., 2007). The Mabel Downs Suite comprises Sr-undepleted tonalite and quartz diorite rocks and a generally Srdepleted Syenite Camp Suite comprises granodiorite, tonalite, and monzogranite (Sheppard et al., 2001). ...
... The Mount Isa Block consists of Paleoproterozoic basement rocks that are preserved in ENE- , 2006;Blake, 1987;Griffin et al., 2006;Neumann & Fraser, 2007;Bierlein & Betts, 2004;O'Dea et al., 1997) (Fig. 8). These basement rocks comprise metasedimentary, volcanic and felsic intrusive rocks that are unconformably overlain by sedimentary and volcanic successions of the Leichhardt, Calvert, and Isa superbasins (Allen et al., 2015;Betts et al., 2006;Jackson et al., 2000;Southgate et al., 2000;Gibson et al., 2012;Neumann et al., 2006) and their equivalents in the southern McArthur Basin. ...
... The timing of metamorphism remains poorly constrained, with possible events at 1800-1760, c. 1680 and 1380- 1285 Ma (Bagas et al., 2000;Anderson, 2015;Maidment, 2017). Other magmatic units include the 1589-1549 Ma Krackatinny Supersuite and 1310-1286 Ma Camel Suite (Neumann and Fraser, 2007;Maidment, 2017). The Rudall Province and Yeneena Basin were deformed during the Miles and Paterson Orogenies (Bagas, 2004). ...
... Dating revealed a maximum deposition age of 1635 ± 14 Ma (indicating an affinity with the Coen Metamorphic Group), and three discrete metamorphic crystallisation events: 1427 ± 28 Ma, 428.9 ± 4.2 Ma, and 414 ± 3.7 Ma. The c. 1427 Ma metamorphic event has not previously been recognised in the Coen Metamorphic Group, but Black (1996) and Neumann and Fraser (2007) reported similar ages in the Holroyd Group. The youngest metamorphic event is statistically indistinguishable from the emplacement age of the nearby 406 ± 7 Ma Kintore Granite (Black et al., 1992a, b). ...
... 1450-1400 Ma zircon ages in the Coen Metamorphic Group, Black (1996) reported an age of 1430 ± 10 Ma from zircon rims in the gneissic Strathburn Formation (Holroyd Group; see also Neumann and Fraser, 2007). Granitic gneiss with an interpreted magmatic crystallisation age of c. 1433 Ma in the Holroyd Metamorphics within the Savannah Province (Blewett et al., 1997) might also have been affected by the poorly understood early Mesoproterozoic tectonothermal event identified in the current sample. ...
This Record presents new Sensitive High Resolution Ion MicroProbe (SHRIMP) U–Pb zircon results obtained under the auspices of the Geological Survey of Queensland–Geoscience Australia (GSQ–GA) National Collaboration Framework (NCF) geochronology project between July 2016 and June 2017. This GSQ–GA geochronology record presents a compilation of six new analysed samples in support of ongoing regional mapping and geoscientific programs led by GSQ in the Georgetown, Coen and Cairns regions. Three magmatic samples were analysed from unnamed rhyolite dykes within the Georgetown region (Gilberton 1:250 000 sheet SE5416), two samples (one magmatic and one metasedimentary) from the Coen region (Coen SD5408), and one metasedimentary sample from the Cairns region (Innisfail SE5506).
https://geoscience.data.qld.gov.au/report/cr130514
... Many Proterozoic-Paleozoic tectonic provinces occurred in northwestern and central Australia, such as the Paterson Orogen, Arunta Inlier, Musgrave Inlier, and Tanami Province (Camacho et al., 2002;Claoué-Long and Hoatson, 2005;Maidment et al., 2007;Hall and Sevastjanova, 2012) (Figs.11-12). Widespread Grenvillian-age magmatism associated with the assembly of the Rodinia supercontinent was developed in the above tectonic provinces (Neumann and Fraser, 2007) (Fig.12). E a s t-J a v a W e s t-S u la w e s i T e r r a n e Minor Grenvillian-age (~1.2-1.0 ...
The Southwest Borneo (SW Borneo) block belongs to Sundaland and is the oldest continental fragment of Borneo that is believed to derive from the Gondwana land. The U-Pb isotopic dating ages of 113 detrital zircons from sandstones of the Ketapang Complex in SW Borneo range from 3 298 Ma to 78 Ma, and show six major age populations: 2 476–2 344 Ma, 2 016–1 831 Ma, 1 296–759 Ma, 455–406 Ma, 262–210 Ma, and 187–78 Ma. The youngest age of these detrital zircons is 78 Ma, indicating that the maximum depositional age of the sandstones is Campanian. Permian-Late Cretaceous detrital zircons are interpreted as having been derived from the nearby Schwaner Mountains and the Permian-Triassic tin belt granitoids in Southeast Asia (SE Asia). Archean-Carboniferous detrital zircons have a continental Gondwana provenance, with their age spectra similar to those of northwestern Australia, indicating that these zircons could be derived from the orogenic belts and cratons in northwestern and central Australia. The provenance of these detrital zircons in this study indicates the SW Borneo block was located on the northwestern margin of Australia during the Paleozoic, in the region of the Banda Embayment. SW Borneo rifted from Australia and moved northward in the Early Jurassic, and this block was added to Sundaland in the Early Cretaceous. The Luconia-Dangerous Grounds continental fragment derived from East Asia collided with SW Borneo after subduction in the Cretaceous, which induced the widespread magmatism in the Schwaner Mountains in SW Borneo.
... Most major Pb-Zn deposits are concentrated in 1570-1660 Ma shale units in the western part of the inlier (Huston et al., 2006;Denaro et al., 2013). The bulk of IOCG mineralization is concentrated in the eastern part of the inlier where mineralization occurs in supracrustal rocks that are spatially associated with intrusions of the 1550-1490 Ma Williams and Naraku Suites (Page and Sun, 1998;Perkins and Wyborn, 1998;Williams et al., 2005, Neumann andFraser, 2007). In the central part of the Mt Isa Inlier, which includes the higher-grade gneisses of the Kalkadoon-Leichhardt Belt and adjacent rocks of the Mary Kathleen Domain (MKD), mineralization appears to be less abundant. ...
... Post-Barramundi, volcano-sedimentary cover sequences in the inlier have been interpreted as intracratonic rift-sag deposits (e.g., Blake and Steward, 1992;Foster and Austin, 2008;Withnall and Hutton, 2013) and were described as three separate cover sequences separated by regional unconformities. The age and extent of the cover sequences were later refined with additional geochronological and stratigraphic work and the sequences were subsequently linked to the development of three 'superbasins' Scott et al., 2000;Neumann and Fraser, 2007;Foster and Austin, 2008;Neumann et al., 2009;Withnall and Hutton, 2013;Fig. 2). ...
The Tick Hill Gold deposit in the southern Mary Kathleen Domain of the Mount Isa Inlier is hosted in a strongly deformed, Paleoproterozoic volcano-sedimentary sequence intruded by pre- and syn-tectonic granites. Igneous rocks and quartzite from the Tick Hill region were dated to constrain the age of the lithologies, deformation events, and gold mineralization. LA-ICP-MS, U-Pb zircon ages for these rocks, together with field relationships, confirm the presence of: (1) 1855–1850 granite belonging to the Kalkadoon Supersuite at ∼10 km and ∼4 km west of Tick Hill, respectively; (2) 1790–1770 Ma early syn-tectonic granite along the contact zone between mapped Argylla Formation and the Kalkadoon Supersuite west of Tick Hill, and later syn-tectonic leucogranite within the immediate vicinity of Tick Hill, including the host rocks to gold mineralization; and (3) late-tectonic, 1525–1520 Ma pegmatite and associated hydrothermal activity in the Tick Hill area that resulted in the mobilization of gold. Quartzite ridges in the hanging wall and footwall of the orebody provided contrasting results, with the youngest zircon population groupings at ca. 1781 Ma and 1841 Ma, respectively. Textural evidence suggests that much of the hanging wall quartzite is probably metasomatic in origin, and the ca. 1781 Ma age group, which was derived from mostly prismatic, euhedral zircon, reflects the age of a heavily silicified quartzofeldspathic gneiss. Thus, the age of the youngest detrital zircon group, ca. 1841 Ma, constrains the maximum age of the sequence at Tick Hill. Field evidence suggests that the 1790–1770 Ma granites intruded into the sedimentary sequence that hosts gold mineralization, indicating that the supracrustal rocks are at least ca. 1790 Ma in age and should not be grouped as Corella Formation. These sediments were affected by intense shearing and upright folding between 1790 Ma and 1770 Ma and younger normal faulting and metasomatism around 1525–1520 Ma. Early gold was introduced during D1 peak metamorphism at 1790–1770 Ma while the later mineralizing events involved the new introduction of gold or the remobilization of pre-existing older gold around 1525–1520 Ma. One of the major outcomes of this study is that the old schist zones in the south Mary Kathleen Domain are prospective for gold mineralization.
... 1850 Ma Tennant Suite are also coeval with the Nicholson Granite Complex (e.g. Neumann and Fraser, 2007). ...
... 1670-1660 Ma; e.g. Neumann and Fraser, 2007). Carson et al. (2020) prefer a second possibility that places the BV within the basal sequence of an expanded and revised Benmara Group, associated with the commencement of sedimentation in the late Paleoproterozoic Isa Superbasin at ca. 1660-1655 Ma, and equivalent to the Gun Supersequence of the Lawn Hill Platform and Mount Isa Province (e.g. ...
The Buddycurrawa Volcanics (BV, Benmara Group) are a sequence of trachyte lavas and interleaved shallow-marine siliciclastic rocks, exposed in the Benmara region, northwestern Mount Drummond 1:250 000 map sheet, Northern Territory. Previous information, including resource potential, on the BV was limited, and stratigraphic correlation with other regional volcanic units was speculative. Our new geochronology data establish the extrusion age of the BV as late Paleoproterozoic, constrained by a maximum age of ca. 1662 Ma (SHRIMP U-Pb zircon) and a minimum age of ca 1631 Ma (in situ laser Rb-Sr on glauconite within vesicles). The BV are, therefore, temporally equivalent to numerous ash fall tuffs reported throughout regional highly prospective late Paleoproterozoic successions. The BV also host vertical siliceous pipes, representing 'white smokers'-peripheral low-temperature equivalents of black smokers-suggestive of a regional shallow-marine hydrothermal circulatory system and potential for associated base metal mineral systems. The BV are pervasively potassically altered. Laser Rb-Sr dating on matrix secondary microcline returns ages ca. 1612-1323 Ma, reflecting timing of fluid flow responsible for at least some of the potassic alteration. These are broadly consistent with similar estimates of episodes of regional fluid flow and base metal mineralisation and/or remobilisation in the Mount Isa Province.
... Simplified time-space plot displaying the interpreted AFT thermochronology data from this study in relation to existing data obtained from other geo-and thermochronological methods. Apatite U-Pb dates are from Hall et al. (2018a); the timing of fluid flow/mineralization was obtained from Neumann and Fraser (2007); constraints on the age of the buried basement was obtained from Reid et al. (2014a); monazite U-Pb dates for the Nawa Domain are from Morrissey et al. (2019) and all other data was obtained from Fraser et al. (2012). ...
... A summary of the interpreted thermochronology from this study in relation to published data from other techniques (Neumann and Fraser, 2007;Fraser et al., 2012;Reid et al., 2014a;Hall et al., 2018a;Morrissey et al., 2019) is presented in Fig. 6. Fig. 7 displays potential relationships between the exhumation level of the crust and the location of Palaeoproterozoic -Mesoproterozoic Au, Cu and Fe occurrences within the study area at the northern margin of the Gawler Craton. ...
The formation of major Palaeoproterozoic and Mesoproterozoic (Cu)-Au deposits at the metal-rich margins of the Gawler Craton, South Australia, has received a lot of attention, however, the relationship between metal occurrences, the exhumation level of the crust and the structural architecture of the craton margins is less clear. Here, we present results from apatite fission track thermochronology applied to basement rocks at the northern margin of the Gawler Craton, revealing a differential cooling history with respect to the Karari shear zone (KSZ). The KSZ is a major shear zone that extends to the Moho in reflection seismic images and has a prolonged history of high-temperature activity during the Paleoproterozoic and Mesoproterozoic. New apatite fission track data show that samples taken to the north of the KSZ record a significant pulse of Carboniferous cooling, in contrast to the Phanerozoic monotonic slow cooling history documented for the area just south of the KSZ. This Carboniferous cooling signal coincides with a sedimentary hiatus between the Neoproterozoic – Devonian Officer Basin and the late Carboniferous to Early Permian Arckaringa Basin, to the north of the KSZ. Therefore, Carboniferous cooling can be linked with exhumation and fault reactivation of the KSZ at that time, which is interpreted to be associated with far-field compression caused by the Alice Springs Orogeny (~450–300 Ma) of central Australia. Following Carboniferous exhumation, a localized thermal overprint was observed in locations associated with Palaeogene palaeochannels.
The extent of Phanerozoic exhumation shows a spatial relation with the location of Au (and/or Cu, Fe) mineralization in the northern Gawler Craton. Areas that were significantly modified by Mesoproterozoic mineralizing events, such as the Olympic IOCG province and the Central Gawler Gold Province, record post-Silurian exhumation histories related to the Alice Springs Orogeny. To the west of these two major mineral provinces, Archaean – early Palaeoproterozoic terranes in the northwestern Gawler Craton with abundant Au (and Cu, Fe) mineral occurrences were not affected by Phanerozoic exhumation and denudation. These relations suggest that the Mesoproterozoic mineralized terranes were more susceptible to Phanerozoic deformation compared to the Archaean – Palaeoproterozoic terranes within the stronger parts of the Gawler Craton. Hence, understanding the timing of fault reactivation and the associated relative exhumation level may provide valuable constraints for ore deposit preservation and mineral exploration within the Gawler Craton.
... Although deposition of the Isa Superbasin in the northern Lawn Hill Platform has been described using a sequence stratigraphic framework (Neumann & Fraser, 2007), the South Nicholson Basin stratigraphy remains described in terms of lithostratigraphy only. As a result, both sequence and lithostratigraphic frameworks are referred to in this report. ...
The Paleoproterozoic Isa Superbasin and the Mesoproterozoic South Nicholson Basin in the Northern Territory and northwestern Queensland contain organic rich sedimentary units with the potential to host both conventional and unconventional petroleum resources (Gorton & Troup, 2018). On the Lawn Hill Platform, the River and Lawn supersequences of the Isa Superbasin host the recently discovered Egilabria shale gas play and are considered highly prospective shale gas targets (Gorton & Troup, 2018). The Energy Systems component of Geoscience Australia’s Exploring for the Future (EFTF) program is aimed at improving our understanding of the petroleum resource potential of northern Australia through the delivery of a suite of new pre-competitive geoscience data and knowledge. To aid in the identification of new areas with the potential to host active petroleum systems, and to target future areas for study as part of the EFTF program, this report provides a baseline assessment of the organic richness, quality and thermal maturity of source rocks of the South Nicholson Basin (South Nicholson Group) and Isa Superbasin (Fickling and McNamara groups). This assessment is based on a compilation of existing quality controlled total organic carbon (TOC), Rock-Eval pyrolysis and organic matter reflectance data. Furthermore, hydrocarbon shows for the region were compiled primarily based on well completion reports and supplementary petroleum reports.
Seven potential source rock intervals were investigated within the Isa Superbasin and a further two in the South Nicholson Basin. For the Fickling and McNamara groups of the Isa Superbasin, source rock statistics are tabulated in both lithostratigraphy and supersequence (Gun, Loretta, River, Term, Lawn, Wide, and Doom supersequences) with the results being reported by supersequence in accordance with recent publications by the Geological Survey of Queensland and Geoscience Australia’s component of the Geological and Bioregional Assessments (GBA) program. In the South Nicholson Basin, where no sequence stratigraphic framework has yet been defined, source rock statistics are presented only by lithostratigraphic unit.
... Ma zircon. Detrital zircon within this age range found in sediments from eastern Indonesia and New Guinea are typically thought to have been derived from the North Australian Craton (Cawood and Korsch, 2008;Zimmermann and Hall, 2016;Decker et al., 2017), with major crust-forming events producing zircons of this age in the Georgetown and Coen inliers, Pine Creek, and the McArthur Basin (Black and McCulloch, 1990;Black et al., 1992;Pell et al., 1997;Blewett and Black, 1998;Belousova et al., 2001;Neumann and Fraser, 2007;Cawood and Korsch, 2008). Similar to the Archean and Palaeo-Proterozoic zircon, local sources of zircon of these ages (2000-1400 Ma) in western and central New Guinea include clastic sediments (Jass Formation) and metamorphics from the Kemum Block (Decker et al., 2017); the Triassic Tipuma Formation (Gunawan et al., 2012;Gunawan, 2013) (Fig. 10a, c and d); and basement rocks from the Central Range (van Wyck and Williams, 2002). ...
