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Статті в журналах з теми "Gawler Range Volcanics"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 20 лютого 2023

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1

GILES, C. "Petrogenesis of the Proterozoic Gawler Range Volcanics, South Australia." Precambrian Research 40-41 (October 1988): 407–27. http://dx.doi.org/10.1016/0301-9268(88)90078-2.

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2

Morrow, Nicole, and Jocelyn McPhie. "Mingled silicic lavas in the Mesoproterozoic Gawler Range Volcanics, South Australia." Journal of Volcanology and Geothermal Research 96, no. 1-2 (February 2000): 1–13. http://dx.doi.org/10.1016/s0377-0273(99)00143-2.

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3

Kivior, Irena, Stephen Markham, Leslie Mellon, and David Boyd. "Mapping geology beneath volcanics using magnetic data." APPEA Journal 58, no. 2 (2018): 821. http://dx.doi.org/10.1071/aj17205.

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Анотація:

Volcanic layers within sedimentary basins cause significant problems for petroleum exploration because the attenuation of the seismic signal masks the underlying geology. A test study was conducted for the South Australia Government to map the thickness of volcanics and sub-volcanic geology over a large area in the Gawler Range Volcanics province. The area is covered by good quality magnetic data. The thickness of volcanics and basement configuration was unknown as there has only been a limited amount of drilling. The Automatic Curve Matching (ACM) method was applied to located magnetic data and detected magnetic sources within different rock units, providing their depth, location, geometry and magnetic susceptibility. The magnetic susceptibilities detected by ACM allowed the differentiation of the volcanics and the underlying basement. The base of volcanics and the depth to the top of basement was mapped along 75 km NS profiles, that were spaced 1 km apart over a distance of 220 km. The volcanic and basement magnetic susceptibilities and the magnetic source distribution pattern were used as key determinants to interpret the depth to the two interfaces. The results for each interface were gridded, and images of the base of volcanics and depth to basement were generated. The mapped volcanics thickness was validated by comparison with the results from drilling, with the volcanics thickness matching very well. After project completion, a passive seismic survey was conducted in part of the test area, indicating a base of volcanics of ~4 km, which further confirmed the results.

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4

Fraser, G. L., R. G. Skirrow, and A. R. Budd. "Geochronology of Mesoproterozoic gold mineralization in the Gawler Craton, and temporal links with the Gawler Range Volcanics." Geochimica et Cosmochimica Acta 70, no. 18 (August 2006): A185. http://dx.doi.org/10.1016/j.gca.2006.06.371.

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5

Pankhurst, M. J., B. F. Schaefer, P. G. Betts, N. Phillips, and M. Hand. "A mesoproterozoic continental flood rhyolite province, the Gawler Ranges, Australia: the end member example of the Large Igneous Province clan." Solid Earth Discussions 2, no. 2 (September 9, 2010): 251–74. http://dx.doi.org/10.5194/sed-2-251-2010.

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Abstract. Rhyolite and dacite lavas of the Mesoproterozoic upper Gawler Range Volcanics (GRV) (>30 000 km3 preserved), South Australia, represent the remnants of one of the most voluminous felsic magmatic events preserved on Earth. Geophysical interpretation suggests eruption from a central cluster of feeder vents which supplied large-scale lobate flows >100 km in length. Pigeonite inversion thermometers indicate eruption temperatures of 950–1100 °C. The lavas are A-type in composition (e.g. high Ga/Al ratios) and characterised by elevated primary halogen concentrations (~1600 ppm Fluorine, ~400 ppm Chlorine). These depolymerised the magma such that temperature-composition-volatile non-Arrhenian melt viscosity modelling suggests they had viscosities of <3.5 log η (Pa s). These physicochemical properties have led to the emplacement of a Large Rhyolite Province, which has affinities in emplacement style to Large Basaltic Provinces. The low viscosity of these felsic magmas has produced a unique igneous system on a scale which is either not present or poorly preserved elsewhere on the planet. The Gawler Range Volcanic Province represents the erupted portion of the felsic end member of the family of voluminous, rapidly emplaced terrestrial magmatic provinces.

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6

Pankhurst, M. J., B. F. Schaefer, P. G. Betts, N. Phillips, and M. Hand. "A Mesoproterozoic continental flood rhyolite province, the Gawler Ranges, Australia: the end member example of the Large Igneous Province clan." Solid Earth 2, no. 1 (March 31, 2011): 25–33. http://dx.doi.org/10.5194/se-2-25-2011.

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Анотація:

Abstract. Rhyolite and dacite lavas of the Mesoproterozoic upper Gawler Range Volcanics (GRV) (>30 000 km3 preserved), South Australia, represent the remnants of one of the most voluminous felsic magmatic events preserved on Earth. Geophysical interpretation suggests eruption from a central cluster of feeder vents which supplied large-scale lobate flows >100 km in length. Pigeonite inversion thermometers indicate eruption temperatures of 950–1100 °C. The lavas are A-type in composition (e.g. high Ga/Al ratios) and characterised by elevated primary halogen concentrations (~1600 ppm fluorine, ~400 ppm chlorine). These depolymerised the magma such that temperature-composition-volatile non-Arrhenian melt viscosity modelling suggests they had viscosities of <3.5 log η (Pa s). These physicochemical properties have led to the emplacement of a Large Rhyolite Province, which has affinities in emplacement style to Large Basaltic Provinces. The low viscosity of these felsic magmas has produced a unique igneous system on a scale which is either not present or poorly preserved elsewhere on the planet. The Gawler Range Volcanic Province represents the erupted portion of the felsic end member of the family of voluminous, rapidly emplaced terrestrial magmatic provinces.

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7

Allen, S. R., C. J. Simpson, J. McPhie, and S. J. Daly. "Stratigraphy, distribution and geochemistry of widespread felsic volcanic units in the Mesoproterozoic Gawler Range Volcanics, South Australia*." Australian Journal of Earth Sciences 50, no. 1 (February 2003): 97–112. http://dx.doi.org/10.1046/j.1440-0952.2003.00980.x.

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8

Agangi, Andrea, Jocelyn McPhie, and Vadim S. Kamenetsky. "Magma chamber dynamics in a silicic LIP revealed by quartz: The Mesoproterozoic Gawler Range Volcanics." Lithos 126, no. 1-2 (September 2011): 68–83. http://dx.doi.org/10.1016/j.lithos.2011.06.005.

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9

McPhie, J., F. DellaPasqua, S. R. Allen, and M. A. Lackie. "Extreme effusive eruptions: Palaeoflow data on an extensive felsic lava in the Mesoproterozoic Gawler Range Volcanics." Journal of Volcanology and Geothermal Research 172, no. 1-2 (May 2008): 148–61. http://dx.doi.org/10.1016/j.jvolgeores.2006.11.011.

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10

Chapman, N. D., M. Ferguson, S. J. Meffre, A. Stepanov, R. Maas, and K. J. Ehrig. "Pb-isotopic constraints on the source of A-type Suites: Insights from the Hiltaba Suite - Gawler Range Volcanics Magmatic Event, Gawler Craton, South Australia." Lithos 346-347 (November 2019): 105156. http://dx.doi.org/10.1016/j.lithos.2019.105156.

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11

Ferguson, Matthew R. M., Kathy Ehrig, and Sebastien Meffre. "Insights into magma histories through silicate-oxide crystal clusters: Linking the Hiltaba Suite intrusive rocks to the Gawler Range Volcanics, Gawler Craton, South Australia." Precambrian Research 321 (February 2019): 103–22. http://dx.doi.org/10.1016/j.precamres.2018.11.015.

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12

Peucat, J. J., R. Capdevila, C. M. Fanning, R. P. Ménot, L. Pécora, and L. Testut. "1.60 Ga felsic volcanic blocks in the moraines of the Terre Adélie Craton, Antarctica: Comparisons with the Gawler Range Volcanics, South Australia." Australian Journal of Earth Sciences 49, no. 5 (October 2002): 831–45. http://dx.doi.org/10.1046/j.1440-0952.2002.00956.x.

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13

Creaser, Robert A. "Neodymium isotopic constraints for the origin of Mesoproterozoic felsic magmatism, Gawler Craton, South Australia." Canadian Journal of Earth Sciences 32, no. 4 (April 1, 1995): 460–71. http://dx.doi.org/10.1139/e95-039.

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Анотація:

Mesoproterozoic felsic magmatism of the Gawler Range Volcanics and Hiltaba Suite granites occurred at 1585–1595 Ma across much of the Gawler Craton, South Australia. Nd isotopic analysis of this felsic magmatism, combined with petrological and geochemical arguments, suggest derivation by partial melting of both Paleoproterozoic and Archean crust. The majority of samples analyzed have Nd isotopic and geochemical characteristics compatible with the involvement of Paleoproterozoic crust stabilized during the 1.85–1.71 Ga Kimban orogeny as sources for the Mesoproterozoic magmatism; others require derivation from sources dominated by Archean rocks. This cycle of Paleoproterozoic crustal stabilization followed by involvement of this crust Mesoproterozoic felsic magmatism is one previously documented from many parts of Mesoproterozoic Laurentia. On the basis of models proposing East Australia–Antarctica to be the conjugate landmass at the rifted margin of western North America, it appears that the voluminous magmatism of South Australia is another example of a typically Mesoproterozoic style of magmatism linked to Laurentia. This Mesoproterozoic magmatism appears temporally linked to regional high-temperature, low-pressure metamorphism of the region, and together with the presence of mantle-derived magmas, implicates the operation of large-scale tectono-thermal processes in the origin of felsic magmatism at 1590 Ma.

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14

Garner, A., and J. McPhie. "Partially melted lithic megablocks in the Yardea Dacite, Gawler Range Volcanics, Australia: implications for eruption and emplacement mechanisms." Bulletin of Volcanology 61, no. 6 (November 23, 1999): 396–410. http://dx.doi.org/10.1007/s004450050281.

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15

Allen, S. R., and J. McPhie. "The Eucarro Rhyolite, Gawler Range Volcanics, South Australia: A >675 km3, compositionally zoned lava of Mesoproterozoic age." Geological Society of America Bulletin 114, no. 12 (December 2002): 1592–609. http://dx.doi.org/10.1130/0016-7606(2002)114<1592:tergrv>2.0.co;2.

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16

McPhie, Jocelyn, Fernando DellaPasqua, Sharon Allen, and Mark Lackie. "New constraints on source location and emplacement mechanisms of extensive felsic units in the Gawler Range Volcanics, South Australia." ASEG Extended Abstracts 2006, no. 1 (December 2006): 1–3. http://dx.doi.org/10.1071/aseg2006ab109.

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17

Roache, M. W., S. R. Allen, and J. McPhie. "Surface and subsurface facies architecture of a small hydroexplosive, rhyolitic centre in the Mesoproterozoic Gawler Range Volcanics, South Australia." Journal of Volcanology and Geothermal Research 104, no. 1-4 (December 2000): 237–59. http://dx.doi.org/10.1016/s0377-0273(00)00208-0.

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18

Ferguson, Matthew R. M., Kathy Ehrig, Sebastien Meffre, and Sandrin Feig. "From magma to mush to lava: Crystal history of voluminous felsic lavas in the Gawler Range Volcanics, South Australia." Lithos 346-347 (November 2019): 105148. http://dx.doi.org/10.1016/j.lithos.2019.105148.

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19

Allen, S. R., J. McPhie, G. Ferris, and C. Simpson. "Evolution and architecture of a large felsic Igneous Province in western Laurentia: The 1.6 Ga Gawler Range Volcanics, South Australia." Journal of Volcanology and Geothermal Research 172, no. 1-2 (May 2008): 132–47. http://dx.doi.org/10.1016/j.jvolgeores.2005.09.027.

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20

Curtis, S., C. Wade, and A. Reid. "Sedimentary basin formation associated with a silicic large igneous province: stratigraphy and provenance of the Mesoproterozoic Roopena Basin, Gawler Range Volcanics." Australian Journal of Earth Sciences 65, no. 4 (May 3, 2018): 447–63. http://dx.doi.org/10.1080/08120099.2018.1460398.

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21

Agangi, Andrea, Vadim S. Kamenetsky, and Jocelyn McPhie. "The role of fluorine in the concentration and transport of lithophile trace elements in felsic magmas: Insights from the Gawler Range Volcanics, South Australia." Chemical Geology 273, no. 3-4 (May 2010): 314–25. http://dx.doi.org/10.1016/j.chemgeo.2010.03.008.

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22

Kamenetsky, V. S., N. Morrow, and J. McPhie. "Origin of high-Si dacite from rhyolitic melt: evidence from melt inclusions in mingled lavas of the 1.6 Ga Gawler Range Volcanics, South Australia." Mineralogy and Petrology 69, no. 3-4 (June 26, 2000): 183–95. http://dx.doi.org/10.1007/s007100070020.

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23

Wade, Claire E., Anthony J. Reid, Michael T. D. Wingate, Elizabeth A. Jagodzinski, and Karin Barovich. "Geochemistry and geochronology of the c. 1585Ma Benagerie Volcanic Suite, southern Australia: Relationship to the Gawler Range Volcanics and implications for the petrogenesis of a Mesoproterozoic silicic large igneous province." Precambrian Research 206-207 (June 2012): 17–35. http://dx.doi.org/10.1016/j.precamres.2012.02.020.

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24

Wade, C. E., J. L. Payne, K. Barovich, S. Gilbert, B. P. Wade, J. L. Crowley, A. Reid, and E. A. Jagodzinski. "ZIRCON TRACE ELEMENT GEOCHEMISTRY AS AN INDICATOR OF MAGMA FERTILITY IN IRON OXIDE COPPER-GOLD PROVINCES." Economic Geology 117, no. 3 (May 1, 2022): 703–18. http://dx.doi.org/10.5382/econgeo.4886.

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Анотація:

Abstract Extrusive and intrusive felsic magmas occur throughout the evolution of silicic-dominated large igneous province magmatism that is temporally related to numerous economically significant iron oxide copper-gold (IOCG) deposits in southern Australia. We investigate zircon trace element signatures of the felsic magmas to assess whether zircon composition can be related to fertility of the volcanic and intrusive suites within IOCG-hosted mineral provinces. Consistent with zircon forming in oxidizing magmatic conditions, the rare earth element (REE) patterns of zircon sourced from both extrusive and intrusive magmatic rocks are characterized by light REE depletions and a range of positive Ce and negative Eu anomalies. The timing of the major phase of IOCG mineralization overlaps with the early part of the first phase of Lower Gawler Range Volcanics magmatism (1593.6–1590.4 Ma) and older intrusive magmatism of the Hiltaba Suite (1593.06–1590.50 Ma). Zircon in these mineralization-related intrusives and extrusives is distinguished from zircon in younger, mineralization-absent rocks by higher Eu/Eu*, Ce/Ce*, and Ti values and separate magma evolution paths with respect to Hf. These zircon characteristics correspond to lower degrees of fractionation and/or crustal assimilation, more oxidizing magmatic conditions, and higher magmatic temperatures, respectively, in magmas coeval with mineralization. In this respect, we consider higher oxidation state, lower degrees of fractionation, and higher magmatic temperatures to be features of fertile magmas in southern Australian IOCG terrains. Similar zircon REE characteristics are shared between magmas associated with southern Australian IOCG and iron oxide-apatite (IOA) rhyolites from the St. Francois Mountains, Missouri, namely high Ce/Ce* and high Dy/Yb, indicative of oxidized and dry magmas, respectively. The dry and more fractionated nature of the IOCG- and IOA-associated magmas contrasts with the hydrous and unfractionated nature of fertile porphyry Cu deposit magmas. As indicated by high Ce/Ce* ratios, the oxidized nature is considered a key element in magma fertility in IOCG-IOA terrains. In both IOCG and IOA terrains, the trace element compositions of zircon are able to broadly differentiate fertile from nonfertile magmatic rocks.

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25

Campbell, E. M., and C. R. Twidale. "The gawler ranges, South Australia: an unusual volcanic massif." Australian Geographer 22, no. 1 (May 1991): 24–33. http://dx.doi.org/10.1080/00049189108703018.

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26

Rajagopalan, Shanti, Shi Zhiqun, and Robert Major. "Geophysical Investigations of Volcanic Terrains: A Case History from the Gawler Range Volcanic Province, South Australia." Exploration Geophysics 24, no. 3-4 (September 1993): 769–78. http://dx.doi.org/10.1071/eg993769.

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27

Campbell, E. M., and C. R. Twidale. "The evolution of bornhardts in silicic volcanic rocks in the gawler ranges." Australian Journal of Earth Sciences 38, no. 1 (February 1991): 79–93. http://dx.doi.org/10.1080/08120099108727957.

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