Low-latitude meteoric fluid flow along the Cloncurry Fault, Cloncurry district, NW Queensland, Australia: geodynamic and metallogenic implications

Mark, Geordie; Williams, Patrick J.; Boyce, Adrian J.

doi:10.1016/j.chemgeo.2004.02.007

Cited by 18 publications

(5 citation statements)

References 48 publications

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“…Generation of abundant quartz veins is often associated with tectonic processes involving the release of fluids. These include the release of hydrothermal fluids by regional metamorphic processes during transpressive tectonic events [ Jia and Kerrich , 2000; Kerrich and Feng , 1992], magmatic fluid release during crystallization of silicic magmas [ Boiron et al , 1996], and late‐stage hydrothermal alteration along strike‐slip faults [ Mark et al , 2004]. As an example, Cheong [2002] describes quartz veins in low‐grade metamorphic rocks within shear zones in Nevada that formed at depths of 5–10 km due to tectonically induced fluid flow.…”

Section: Discussionmentioning

confidence: 99%

“…Numerical modeling by Wolf et al [2005] demonstrates that excess pore pressures in the upper 5 km result from gravity‐driven flow and can be sustained in a wide discharge area encompassing most of the NMSZ. There is abundant evidence in other parts of the world that fluids, including meteoric water, are present in fault zones down to midcrustal levels [ McCaig , 1988; Stibson , 1994; Boiron et al , 1996; McCaig et al , 2000; Yonkee et al , 2003; Mark et al , 2004; Imber et al , 2008; Wibberley et al , 2008].…”

Section: Discussionmentioning

confidence: 99%

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Intrusions and anomalous V_p/V_sratios associated with the New Madrid seismic zone

Powell¹,

Withers²,

DeShon³

et al. 2010

J. Geophys. Res.

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[1] Detailed P wave velocity (V p ) and S wave velocity (V s ) models and V p /V s ratios were determined for a major portion of the New Madrid seismic zone using arrival times recorded by the New Madrid seismic network and Portable Array for Numerical Data Acquisition (PANDA) stations. We performed a simultaneous inversion for P and S wave velocities and hypocentral locations, yielding the most detailed tomographic image of the upper portion of the crust to date. Low V p and high V s anomalies resulted in low V p /V s ratios that correspond to the major arms of seismicity north of the intersection of the Cottonwood Grove-Blytheville Arch (CG-BA) fault with the Reelfoot fault. The unusual low V p /V s values can be attributed to the presence of quartz-rich rocks. Two regions contain anomalous V p and V s values and V p /V s ratios that cannot be attributed to variations in rock composition and are probably produced by overpressured fluids. One region is located on the hanging wall of the northern portion of the Reelfoot fault and is aseismic. The other region corresponds to a portion of the southern Reelfoot fault that experiences swarm activity. A distinct velocity contrast exists across the CG-BA fault at depths exceeding 4.65 km; basement rocks southeast of the fault have V p values that are 4%-6% slower than values for rocks located to the northwest. The most logical explanation is that the fault follows a preexisting structural feature or lithologic change in basement rocks.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Intrusions and anomalous V_p/V_sratios associated with the New Madrid seismic zone

Powell¹,

Withers²,

DeShon³

et al. 2010

J. Geophys. Res.

View full text Add to dashboard Cite

show abstract

“…Therefore, the strong correlation between this low-velocity zone and the high-conductivity layer is indicative of the pore fluid properties. The fluid might have been derived from either metamorphism-related dehydration under high temperature and pressure, magmatic water at the condensation point as mantle magma ascends through the crust (Che and Yu 2014), or meteoric water (Nakajima 2001;Zhao et al 1996) or some water-bearing medium (McCaig 1988;Mark et al 2004). Therefore, the strong correlation between the low-velocity zones in the seismic profiles and the water storage structures in the non-seismic geophysical profiles validates the effectiveness of inferring the geothermal energy potential via non-seismic geophysical profiling (Fig.…”

Section: Correlation With Seismic Resultsmentioning

confidence: 99%

Geophysical survey of geothermal energy potential in the Liaoji Belt, northeastern China

et al. 2019

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Economic development has accelerated the consumption of oil, natural gas, coal and other traditional energies, leading to the depletion of traditional fossil fuel resources, heavy pollution and degradation of the natural environment (Dincer and Acar 2015; Li and Xue 2015). Therefore, there is a growing need for clean energy (Fridleifsson 2001). Geothermal energy is one of the most important clean energy options that has attracted growing attention worldwide (Barbier 2011). Geothermal resources have the advantage over traditional fossil fuels of possessing large reserves that are clean and environmentally friendly (Kütahyali et al. 2011; Croteau and Gosselin 2015). An increase in the global use of geothermal resources would reduce the emissions of particulate matter and harmful gases that result from the combustion of fossil fuels (Lior 2010). Researchers have developed and implemented various methods to investigate the potential reserves and exploitation of geothermal resources with promising results. For example, geophysical methods have been employed to predict the geothermal potential of the Baja California Peninsula (Arango-Galván et al. 2015); deep-buried faults in geothermal regions have been successfully identified using microtremor arrays (Xu et al.

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“…The brittle faults that were active from D 4 -D 5 are major structural controls on mineralization in the Eastern Succession. Several workers (e.g., Butera, 2004;Mustard et al, 2004;Ford and Blenkinsop, 2008;Keys, 2008;Austin and Blenkinsop, 2009) have considered the prospectivity of a range of fault orientations in the Eastern Succession and have concluded that jogs, splays, and intersections along north to northnorthwest, northwest and west-northwest-trending faults provide the highest prospectivity for mineralization of Cu and Au. From D 5 (<1510 Ma), crustal relaxation ensued in conjunction with the final and largest magmatic phase, intrusion of the Squirrel Hills Granite at ca.…”

Section: Regional Geologymentioning

confidence: 98%

Magnetic modeling of iron oxide copper-gold mineralization constrained by 3D multiscale integration of petrophysical and geochemical data: Cloncurry District, Australia

2013

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Magnetite-rich iron oxide copper-gold deposits (IOCGs) are geologically and geochemically complex and present major challenges to geophysical investigation. They often sit beneath significant cover, exhibit magnetic remanence, and suffer from self-demagnetization effects. Because remanence in magnetite-bearing drill core samples is commonly overprinted by drilling, in situ natural remanent magnetization is difficult to measure accurately, and thus IOCGs cannot be modeled definitively using geophysics alone. We examined structural controls on a magnetite-rich IOCG in northwest Queensland and the relationships between structure, alteration, Fe oxides, and mineralization at core to deposit scale. Magnetite within the deposit has a multidomain structure, and thus it would commonly have an in situ magnetization parallel to the earth's field. In contrast, pyrrhotite has a pseudosingle-domain structure and so it is the predominant carrier of stable remanence within the ore system. Geophysical lineament analyses are used to determine structural controls on mineralization, geophysical filters (e.g., analytic signal amplitude) are used to help define structural extent of the deposit, and basement geochemistry is used to map mineral footprints beneath cover. These techniques identified coincident anomalies at the intersection of north and northwest lineaments. Leapfrog™ interpolations of downhole magnetic susceptibility and Cu, Au, and Fe assay data were used to map the distribution of magnetite, copper, gold, and sulfur in 3D. The analysis revealed that Cu and Au mineralization were coupled with the magnetite net-vein architecture, but that Cu was locally enriched in the east-northeast-trending demagnetized zone. The results from this suite of geophysical, petrophysical, and geochemical techniques were integrated to constrain modeling of the Brumby IOCG. Brumby can be described as a breccia pipe sitting at the intersection of north-striking, east-dipping, and northwest-striking, southeast-dipping structures that plunges moderately to the south-southeast. The breccia pipe was overprinted by a relatively late net-vein magnetite breccia and crosscut by a later, magnetitedestructive, east-northeast-striking fault.

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Low-latitude meteoric fluid flow along the Cloncurry Fault, Cloncurry district, NW Queensland, Australia: geodynamic and metallogenic implications

Cited by 18 publications

References 48 publications

Intrusions and anomalous V_p/V_sratios associated with the New Madrid seismic zone

Intrusions and anomalous V_p/V_sratios associated with the New Madrid seismic zone

Geophysical survey of geothermal energy potential in the Liaoji Belt, northeastern China

Magnetic modeling of iron oxide copper-gold mineralization constrained by 3D multiscale integration of petrophysical and geochemical data: Cloncurry District, Australia

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Low-latitude meteoric fluid flow along the Cloncurry Fault, Cloncurry district, NW Queensland, Australia: geodynamic and metallogenic implications

Cited by 18 publications

References 48 publications

Intrusions and anomalous Vp/Vsratios associated with the New Madrid seismic zone

Intrusions and anomalous Vp/Vsratios associated with the New Madrid seismic zone

Geophysical survey of geothermal energy potential in the Liaoji Belt, northeastern China

Magnetic modeling of iron oxide copper-gold mineralization constrained by 3D multiscale integration of petrophysical and geochemical data: Cloncurry District, Australia

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Product

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Intrusions and anomalous V_p/V_sratios associated with the New Madrid seismic zone

Intrusions and anomalous V_p/V_sratios associated with the New Madrid seismic zone