Recognising Mineral Deposits from Cover; A Case Study Using Zircon Chemistry in the Gawler Craton, South Australia

Detrital zircon grains preserved within clasts and the matrix of a basal diamictite sequence directly overlying the Carrapateena IOCG deposit in the Gawler Craton, South Australia are shown here to preserve U–Pb ages and geochemical signatures that can be related to underlying mineralisation. The zircon geochemical signature is characterised by elevated heavy rare-earth element fractionation values (GdN/YbN ≥ 0.15) and high Eu ratios (Eu/Eu* ≥ 0.6). This geochemical signature has previously been recognised within zircon derived from within the Carrapateena orebody and can be used to distinguish zircon associated with IOCG mineralisation from background zircon preserved within stratigraphically equivalent regionally unaltered and altered samples. The results demonstrate that zircon chemistry is preserved through processes of weathering, erosion, transport, and incorporation into cover sequence materials and, therefore, may be dispersed within the cover sequence, effectively increasing the geochemical footprint of the IOCG mineralisation. The zircon geochemical criteria have potential to be applied to whole-rock geochemical data for the cover sequence diamictite in the Carrapateena area; however, this requires understanding of the presence of minerals that may influence the HREE fractionation (GdN/YbN) and/or Eu/Eu* results (e.g., xenotime, feldspar).

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3D joint inversion of geophysical data with Gramian constraints: A case study from the Carrapateena IOCG deposit, South Australia

The Leading Edge ◽

10.1190/tle31111382.1 ◽

2012 ◽

Vol 31 (11) ◽

pp. 1382-1388 ◽

Cited By ~ 9

Author(s):

Michael S. Zhdanov ◽

Alexander V. Gribenko ◽

Glenn A. Wilson ◽

Charles Funk

Keyword(s):

Joint Inversion ◽

South Australia ◽

Geophysical Data ◽

Iocg Deposit

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Heavy Rare Earth Element (HREE) Enrichment in Carbonatites: A Case Study from a Xenotime-Bearing Carbonatite REE Deposit in Bachu, Xinjiang of China

10.46427/gold2020.2436 ◽

2020 ◽

Author(s):

Wenlei Song ◽

Cheng Xu ◽

Jindrich Kynicky ◽

Martin Smith

Keyword(s):

Rare Earth ◽

Rare Earth Element ◽

Earth Element ◽

Heavy Rare Earth ◽

Heavy Rare Earth Element ◽

Xinjiang Of China

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AUTOMATED DRILL CORE LOGGING USING VISIBLE AND NEAR-INFRARED REFLECTANCE SPECTROSCOPY: A CASE STUDY FROM THE OLYMPIC DAM IOCG DEPOSIT, SOUTH AUSTRALIA

Economic Geology ◽

10.2113/econgeo.106.2.289 ◽

2011 ◽

Vol 106 (2) ◽

pp. 289-296 ◽

Cited By ~ 27

Author(s):

M. Tappert ◽

B. Rivard ◽

D. Giles ◽

R. Tappert ◽

A. Mauger

Keyword(s):

Near Infrared ◽

South Australia ◽

Reflectance Spectroscopy ◽

Drill Core ◽

Near Infrared Reflectance Spectroscopy ◽

Near Infrared Reflectance ◽

Core Logging ◽

Iocg Deposit ◽

Olympic Dam

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Policing and Private Security in South Australia: A Case Study in Public/Private Cooperation

SSRN Electronic Journal ◽

10.2139/ssrn.2345128 ◽

2012 ◽

Author(s):

Rick Sarre

Keyword(s):

South Australia ◽

Private Security

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Investigation into the Cause of Iron-Related Clogging of Groundwater Bores Used for Viticulture in the Limestone Coast, South Australia

Water ◽

10.3390/w13050683 ◽

2021 ◽

Vol 13 (5) ◽

pp. 683

Author(s):

Birte Moser ◽

Meruyert Beknazarova ◽

Harriet Whiley ◽

Thilini Piushani Keerthirathne ◽

Nikki Harrington ◽

...

Keyword(s):

Groundwater Resources ◽

South Australia ◽

Water Levels ◽

Clear Correlation ◽

Problem Analysis ◽

Persistent Problem ◽

Root Cause ◽

Complex Interactions ◽

Iron Manganese

Iron-related clogging of boreholes, pumps and dripper lines is a significant and costly problem for irrigators worldwide. The primary cause of iron-related clogging is still debated. Previous studies have described complex interactions between biological clogging and inorganic iron/manganese oxide precipitation. This case study examined groundwater bores used for viticulture irrigation in the Limestone Coast region, a highly productive wine growing area in the SE of South Australia. Iron clogging of bore screens, pumps and dripper systems has been a persistent problem in the region and the issue is perceived to be growing, with irrigators suggesting the widespread introduction of iron-related bacteria (IRB) through drilling equipment to be the root cause of the problem. Analysis of the groundwater microbiology and inorganic chemistry found no apparent correlation between the presence of IRB and the clogging status of wells. In fact, IRB proved to be widespread throughout the limestone aquifer. However, a clear correlation could be found between clogging affected bores and the redox potential of the groundwater with the most severely affected bores strongly oversaturated in respect to iron oxide minerals. Elevated dissolved concentrations of Fe(II) thereby tended to be found in deeper bores, which also were generally more recently drilled. Following decades of less than average rainfall, a tendency to deepen bores in response to widespread declines in water levels has been documented for the SE of South Australia. The gradually widening clogging problem in the region is postulated to be related to the changes in climate in the region, with irrigators increasingly driven to rely on deeper, anoxic iron-rich groundwater resources.

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Unitarity in KK-graviton production, a case study in warped extra-dimensions

Journal of High Energy Physics ◽

10.1007/jhep04(2021)143 ◽

2021 ◽

Vol 2021 (4) ◽

Author(s):

A. de Giorgi ◽

S. Vogl

Keyword(s):

Extra Dimensions ◽

Sum Rules ◽

Effective Theory ◽

Higher Dimensional ◽

Massive Spin ◽

The Matrix ◽

Dimensional Gravity ◽

Warped Extra Dimensions ◽

Kaluza Klein

Abstract The Kaluza-Klein (KK) decomposition of higher-dimensional gravity gives rise to a tower of KK-gravitons in the effective four-dimensional (4D) theory. Such massive spin-2 fields are known to be connected with unitarity issues and easily lead to a breakdown of the effective theory well below the naive scale of the interaction. However, the breakdown of the effective 4D theory is expected to be controlled by the parameters of the 5D theory. Working in a simplified Randall-Sundrum model we study the matrix elements for matter annihilations into massive gravitons. We find that truncating the KK-tower leads to an early breakdown of perturbative unitarity. However, by considering the full tower we obtain a set of sum rules for the couplings between the different KK-fields that restore unitarity up to the scale of the 5D theory. We prove analytically that these are fulfilled in the model under consideration and present numerical tests of their convergence. This work complements earlier studies that focused on graviton self-interactions and yields additional sum rules that are required if matter fields are incorporated into warped extra-dimensions.

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The role of the Australian Coastcare program in community-based coastal management: a case study from South Australia

Ocean & Coastal Management ◽

10.1016/s0964-5691(01)00045-x ◽

2001 ◽

Vol 44 (3-4) ◽

pp. 161-181 ◽

Cited By ~ 17

Author(s):

Nick Harvey ◽

Beverley D Clarke ◽

Patricia Carvalho

Keyword(s):

Coastal Management ◽

South Australia ◽

Community Based

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Flexible Theory and Flexible Regulation: Collaboration and Competition in the McLaren Vale Wine Industry in South Australia

Environment and Planning A Economy and Space ◽

10.1068/a270041 ◽

1995 ◽

Vol 27 (1) ◽

pp. 41-61 ◽

Cited By ~ 13

Author(s):

G Haughton ◽

J Browett

Keyword(s):

South Australia ◽

Wine Industry ◽

Social Regulation ◽

Regulatory Mechanisms ◽

Industrial Districts ◽

Key Features

A case study of the McLaren Vale wine industry is used to challenge four areas of the regulation debate. First, the uniqueness of some of the key features underpinning the periodisations of accumulation regimes and their associated modes of social regulation is questioned. Second, concern is raised over the extent to which ‘new industrial districts’ can really be described as engaging in ‘new’ practices. Third, the importance of local regulatory mechanisms is emphasised. Last, the importance of nonstate, nonlegislative forms of regulation are highlighted.

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