ORCID Profile
0000-0002-6357-5966
Current Organisation
La Trobe University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Archaeology | Archaeological Science | Water Resources Engineering | Photogrammetry and Remote Sensing | Surfacewater Hydrology | Mineralogy and Crystallography | Hydrogeology | Geology | Geochemistry | Physical Geography and Environmental Geoscience | Environmental Engineering | Archaeology Of Complex Societies: Asia, Africa, Oceania And The | Aboriginal and Torres Strait Islander Archaeology | Archaeology of Asia Africa and the Americas | Geochronology And Isotope Geochemistry | Archaeology of Europe, the Mediterranean and the Levant | Climatology (Incl. Palaeoclimatology) | Igneous and Metamorphic Petrology | Groundwater Hydrology | Geochronology | Archaeology | Environmental Engineering not elsewhere classified | Environmental Management | Materials Engineering | Metals and Alloy Materials | Geology not elsewhere classified | Geochemistry not elsewhere classified |
Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environments | Climate Change Mitigation Strategies | Understanding Australia's Past | Conserving Collections and Movable Cultural Heritage | Conserving Aboriginal and Torres Strait Islander Heritage | Environmentally Sustainable Manufacturing not elsewhere classified | Integration of Farm and Forestry | Earth sciences | Climate change | Land and water management | Social Impacts of Climate Change and Variability | Physical and Chemical Conditions of Water in Fresh, Ground and Surface Water Environments (excl. Urban and Industrial Use) | Expanding Knowledge in the Earth Sciences | Expanding Knowledge in the Physical Sciences | Expanding Knowledge in Engineering | Understanding Past Societies not elsewhere classified | Forest and Woodlands Water Management | Fresh, Ground and Surface Water Flora, Fauna and Biodiversity
Publisher: Elsevier BV
Date: 05-2017
Publisher: Springer Science and Business Media LLC
Date: 06-04-2011
Publisher: Informa UK Limited
Date: 04-1981
Publisher: Wiley
Date: 04-1996
Publisher: Springer Science and Business Media LLC
Date: 28-04-2011
Publisher: American Association for the Advancement of Science (AAAS)
Date: 14-08-2009
Abstract: For at least 72,000 years, humans have used heat treatment of stone materials to make more efficient tools.
Publisher: Public Library of Science (PLoS)
Date: 10-03-2021
DOI: 10.1371/JOURNAL.PONE.0247167
Abstract: The megalithic jar sites of Laos (often referred to as the Plain of Jars) remain one of Southeast Asia’s most mysterious and least understood archaeological cultures. The sites, recently inscribed as UNESCO World Heritage, host hollowed stone jars, up to three metres in height, which appear scattered across the landscape, alone or clustered in groups of up to more than 400. Until now, it has not been possible to estimate when the jars were first placed on the landscape or from where the stone was sourced. Geochronological analysis using the age of detrital zircons demonstrates a likely quarry source for one of the largest megalithic jar sites. Optically Stimulated Luminescence (OSL) dating suggests the jars were positioned at the sites potentially as early as the late second millennium BC. Radiocarbon dating of skeletal remains and charcoal s les places mortuary activity around the jars from the 9-13th century AD, suggesting the sites have maintained ritual significance from the period of their initial placement until historic times.
Publisher: Informa UK Limited
Date: 03-10-2017
Publisher: Springer US
Date: 2004
Publisher: Elsevier BV
Date: 12-2012
DOI: 10.1016/J.JENVMAN.2012.07.002
Abstract: In southwestern Victoria a large number of lakes are scattered across the volcanic plains many have problems with increasing salinity. To identify the hydrologic components behind this problem, three lakes, Burrumbeet, Linlithgow and Buninjon, were selected for detailed water and salt budget modelling using monthly values of rainfall, evaporation, surface inflow and outflow, and groundwater inflow and outflow (using the new modified difference method developed in this study). On average, rainfall begins to exceed evaporation with the onset of winter rainfall in May, so lake levels rise and lake salinities decline. The modelled lakes have become more saline over the last decade, a time of drought with below average rainfall, and all eventually dried out, their salinities rising to very high levels as they shallowed. Lake Burrumbeet is generally much less saline than Lakes Linlithgow and Buninjon, because it has substantial groundwater outflow, probably due to leakage through one or more volcanic necks. This limits the amount of time the lake water is subject to evaporation, and also allows significant salt export. The other lakes do not leak. The modelling indicates that when the lakes dry out, salt is lost from the lake-beds, probably due to wind deflation of salt crusts and leakage into the underlying groundwater. The removal of salt during drying-out phases resets the salinity of the lakes, limiting their ability to become more saline with time. Drying-out phases may therefore be essential in preventing the increased salinisation of lakes and wetland environments across the volcanic plains.
Publisher: Elsevier BV
Date: 03-2007
Publisher: Cambridge University Press (CUP)
Date: 1995
DOI: 10.1017/S0016756800011420
Abstract: The mid- to Upper Permian Radok Conglomerate, the lowermost formation of the Permo-Triassic Amery Group, crops out in the Beaver Lake area of the northern Prince Charles Mountains, East Antarctica. Outcrop is confined to a north-south elongate, fault-bounded corridor interpretedas a remnant of a continental extensional basin formed during Late Palaeozoic times. This basinforms a small part of the much larger Lambert Graben, a major continental rift system. The RadokConglomerate consists of interbedded conglomerates, argillaceous sandstones, siltstones, and minor, thin carbonaceous siltstones and coals. Textural, petrographic, palaeocurrent and other data suggestlocal derivation from Precambrian massifs to the immediate west, during a period of fault activity.The unit is a minimum of 400 m thick, the base being unexposed, and grossly fines upward. It isabruptly overlain by quartzo-feldspathic sandstone-dominated rocks of the Upper Permian Bainmedart Coal Measures. Seven recurrent lithofacies have been recognized with the Radok Conglomerate, and are interpreted as the products of poorly-confined stream flow, sheet flow and sediment gravity flow processes, suspension fallout in shallow standing water, and organic sediment accumulation in peat-forming wetlands. The unit as a whole is interpreted as having accumulated as a coarse alluvial apron along the western margin of a ?graben extensional trough. Similar, though poorly exposed, facies are exposed on the eastern margin of the basin and may reflect similar depositional systems. Towards the top of the Radok Conglomerate, typical Radok lithologies are interbedded with quartzo-feldspathic sandstones derived from the south, precursors of the overlying Bainmedart Coal Measures. Interference between transverse (Radok) and axial (Bainmedart) drainage is possibly related to progressive infilling of extensional topography, thereby allowing axially flowing rivers to avulse increasingly into the Beaver Lake region from the main Lambert Graben.
Publisher: Elsevier BV
Date: 07-2014
Publisher: Informa UK Limited
Date: 02-1995
Publisher: Informa UK Limited
Date: 04-1982
Publisher: Society for Sedimentary Geology
Date: 09-2007
DOI: 10.2110/JSR.2007.074
Publisher: Springer Science and Business Media LLC
Date: 23-04-2016
DOI: 10.1007/S10661-016-5310-7
Abstract: Forecast evaluation is an important topic that addresses the development of reliable hydrological probabilistic forecasts, mainly through the use of climate uncertainties. Often, validation has no place in hydrology for most of the times, despite the parameters of a model are uncertain. Similarly, the structure of the model can be incorrectly chosen. A calibrated and verified dynamic hydrologic water balance spreadsheet model has been used to assess the effect of climate variability on Lake Burrumbeet, southeastern Australia. The lake level has been verified to lake level, lake volume, lake surface area, surface outflow and lake salinity. The current study aims to increase lake level confidence model prediction through historical validation for the year 2008-2013, under different climatic scenario. Based on the observed climatic condition (2008-2013), it fairly matches with a hybridization of scenarios, being the period interval (2008-2013), corresponds to both dry and wet climatic condition. Besides to the hydrologic stresses uncertainty, uncertainty in the calibrated model is among the major drawbacks involved in making scenario simulations. In line with this, the uncertainty in the calibrated model was tested using sensitivity analysis and showed that errors in the model can largely be attributed to erroneous estimates of evaporation and rainfall, and surface inflow to a lesser. The study demonstrates that several climatic scenarios should be analysed, with a combination of extreme climate, stream flow and climate change instead of one assumed climatic sequence, to improve climate variability prediction in the future. Performing such scenario analysis is a valid exercise to comprehend the uncertainty with the model structure and hydrology, in a meaningful way, without missing those, even considered as less probable, ultimately turned to be crucial for decision making and will definitely increase the confidence of model prediction for management of the water resources.
Publisher: Elsevier BV
Date: 06-2017
Publisher: Wiley
Date: 13-09-2020
DOI: 10.1002/ESP.4976
Abstract: A synthesis of the geochemistry of silcretes and their host sediments in the Kalahari Desert and Cape coastal zone, using isocon comparisons, shows that silcretes in the two regions are very different. Kalahari Desert silcretes outcrop along drainage‐lines and within pans, and formed by groundwater silicification of near‐surface Kalahari Group sands. Silicification was approximately isovolumetric. Few elements were lost silicon (Si) and potassium (K) were gained as microquartz precipitated in the sediment porosity and glauconite formed in the sub‐oxic groundwater conditions. The low titanium (Ti) content reflects the composition of the host sands. Additional elements in the Kalahari Desert silcretes were supplied in river water and derived from weathering of silicates in basement rocks. Evaporation under an arid climate produced high‐pH groundwater that mobilized and precipitated Si this process is still occurring. In the Cape coastal zone, pedogenic silcretes cap hills and plateaus, overlying deeply weathered argillaceous bedrock. Silicification resulted from intensive weathering that destroyed the bedrock silicates, almost completely removing most elements and causing a substantial volume decrease. Some of the silica released formed a microcrystalline quartz matrix, and most Ti precipitated as anatase, so the Cape silcretes contain relatively high Ti levels. The intense weathering that formed the Cape silcretes could have occurred in the Eocene, during and after the Palaeocene‐Eocene Thermal Maximum, when more acidic rainfall and high temperatures resulted in intensified silicate weathering worldwide. This could have been responsible for widespread formation of pedogenic silcretes elsewhere in Africa and around the globe. Trace element sourcing of silcrete artefacts to particular outcrops has most potential in the Cape, where differences between separate bedrock areas are reflected in the silcrete composition. In the Kalahari Desert, gains of some elements can override compositional differences of the parent material, and sourcing should be based on elements that show the least change during silicification. © 2020 John Wiley & Sons, Ltd.
Publisher: Springer Science and Business Media LLC
Date: 27-03-2009
Publisher: Informa UK Limited
Date: 1978
Publisher: Springer Science and Business Media LLC
Date: 02-12-2005
Publisher: Informa UK Limited
Date: 07-2010
Publisher: Wiley
Date: 12-2022
DOI: 10.1002/HYP.14784
Abstract: Land use affects evapotranspiration rates and is a primary driver of the catchment water balance. The water balance of two catchments in southeastern Australia dominated by either grazed pasture or blue gum ( Eucalyptus globulus ) plantation was studied, focusing on the patterns of evapotranspiration (ET) throughout the year. Rainfall, streamflow, and groundwater levels measured between 2015 and 2019 were combined to estimate annual ET using a water balance equation. In the pasture, eddy covariance was used to measure ET from the catchment. Sap flow measurements were used to estimate tree transpiration in May 2017–May 2018 and Feb 2019–Feb 2021 in two different plots within the plantation. The tree transpiration rates were added to interception, estimated as a percentage of annual rainfall, to calculate ET from the plantation catchment. ET in the pasture showed strong seasonal cycles with very low ET rates in summer and ET rates in spring that were larger than the transpiration rates in the plantation, where trees transpired consistently throughout the year. The estimated annual ET from the water balance equation was comparable to ET estimated from other measurements. In the pasture, ET on average accounted for 88% of annual rainfall, while ET in the plantation was on average 93% of rainfall, exceeding it in the years with annual rainfall lower than about 500 mm. The difference between the ET rates in the plantation and the pasture was approximately 30–50 mm y −1 . The larger ET rates in the plantation were reflected in a gradual decrease in the groundwater storage. The larger ET rates were enough to cause a decrease in groundwater storage in the plantation but not in the pasture, where groundwater levels remained stable.
Publisher: Elsevier BV
Date: 03-2017
Publisher: Wiley
Date: 05-1996
DOI: 10.1002/(SICI)1096-9837(199605)21:5<453::AID-ESP608>3.0.CO;2-4
Publisher: Informa UK Limited
Date: 06-2008
Publisher: Elsevier BV
Date: 09-1994
Publisher: Elsevier BV
Date: 10-2017
Publisher: Informa UK Limited
Date: 08-2011
Publisher: Elsevier BV
Date: 11-2007
Publisher: Wiley
Date: 26-11-2020
DOI: 10.1002/ESP.5037
Publisher: Elsevier BV
Date: 2015
Publisher: American Chemical Society (ACS)
Date: 04-03-2011
DOI: 10.1021/ES103535K
Abstract: The acid generation mechanisms and neutralizing capacities of sulfidic sediments from two inland wetlands have been studied in order to understand the response of these types of systems to drying events. The two systems show vastly different responses to oxidation, with one (Bottle Bend (BB) lagoon) having virtually no acid neutralizing capacity (ANC) and the other (Psyche Bend (PB) lagoon) an ANC that is an order of magnitude greater than the acid generation potential. While BB strongly acidifies during oxidation the free acid generation is less than that expected from the measured proton production and consumption processes, with additional proton consumption attributed to the formation of an acid-anion (chloride) FeIII (oxyhydr)oxide product, similar to akaganéite (Fe(OH)2.7Cl0.3). While such products can partially attenuate the acidification of these systems, resilience to acidification is primarily imparted by sediment ANC.
Publisher: Elsevier BV
Date: 08-2023
Publisher: Elsevier BV
Date: 09-2023
Publisher: Copernicus GmbH
Date: 13-08-2012
DOI: 10.5194/HESS-16-2703-2012
Abstract: Abstract. The development of laser-scan techniques provides opportunity for detailed terrain analysis in hydrologic studies. Ground based scans were used to model the ground surface elevation in the area of a stream gauge weir over an area of 240 m2 at a resolution of 0.05 m. The terrain model was used to assess the possibility of flow bypassing the weir and to calculate stream flow during filling of the weir pool, prior to flow through the weir notch. The mapped surface shows a subtle low-lying area at the south end of the structure where flow could bypass the weir. The flow calculations quantify low-flows that do not reach the weir notch during small rain events and flow at the beginning of larger events in the ephemeral stream.
Publisher: Informa UK Limited
Date: 08-2000
Publisher: Cambridge University Press (CUP)
Date: 05-1992
DOI: 10.1017/S0016756800019245
Abstract: Detailed mapping of surface and underground karst features at Buchan, in eastern Victoria, has shown that the three river terraces along the Buchan River can be correlated with three levels of epiphreatic development in the nearby caves. Each level represents a stillstand in the denudational history of the area. Uranium series dating of speleothems and palaeomagnetic studies of cave sediments indicate that all three stilistands are more than 730 ka old. The periods of incision separating the stillstands were probably the result of active tectonic uplift. This contrasts with some northern parts of the Southeastern Highlands, which have been stable since the Eocene. The overall amount of incision and uplift at Buchan is small, indicating that the majority of scarp retreat in this section of the highlands must have occurred earlier. The denudation history of the Buchan area over the last 730 ka has seen only 2–3 m of incision, despite the major climatic and sea-level changes that have occurred in that time. Whereas most karst landscapes in the Northern Hemisphere have been extensively modified during the late Pleistocene, the Buchan karst was little affected, and its geomorphology has an older origin.
Publisher: Informa UK Limited
Date: 12-2012
Publisher: Elsevier BV
Date: 2009
Publisher: Informa UK Limited
Date: 1994
Publisher: Cambridge University Press (CUP)
Date: 03-1995
DOI: 10.1017/S0954102095000095
Abstract: Megafloral remains recovered from the Jetty Member and the upper part of the Flagstone Bench Formation, Amery Group include Dicroidium and Pagiophyllum . Dicroidium zuberi and D. crassinervis forma stelznerianum occur with Pteruchus dubius and support a Mid to Late Triassic age. A new species of conifer, Pagiophyllum papillatus , is recognized along with an undetermined conifer pollen cone.
Publisher: Elsevier BV
Date: 08-2020
Publisher: Copernicus GmbH
Date: 04-08-2014
Abstract: Abstract. The chemical composition of groundwater and surface water is often considered to be dominated by water–rock interactions, particularly weathering however, it has been increasingly realised that plant uptake can deplete groundwater and surface water of nutrient elements. Here we show, using geochemical mass balance techniques, that water–rock interactions do not control the hydrochemistry at our study site within a granite terrain in southwest Victoria, Australia. Instead the chemical species provided by rainfall are depleted by plant biomass uptake and exported, predominantly through fire. Regular landscape burning by Aboriginal land users is hypothesized to have caused the depletion of chemical species in groundwater for at least the past 20 000 yr by accelerating the export of elements that would otherwise have been stored within the local biomass. These findings are likely to be applicable to silicate terrains throughout southeast Australia, as well as similar lithological and climatic regions elsewhere in the globe, and contrast with studies of groundwater and surface water chemistry in higher rainfall areas of the Northern Hemisphere, where water–rock interactions are the dominant hydrochemical control.
Publisher: Informa UK Limited
Date: 16-05-2017
Publisher: Elsevier BV
Date: 08-2015
Publisher: Informa UK Limited
Date: 2007
Publisher: Wiley
Date: 23-09-2004
DOI: 10.1002/ESP.1138
Publisher: Elsevier BV
Date: 10-2014
Publisher: Elsevier BV
Date: 07-2016
Publisher: Geological Society of America
Date: 2006
Publisher: Elsevier BV
Date: 07-2006
Publisher: Elsevier BV
Date: 07-2021
Publisher: Elsevier BV
Date: 04-1999
Publisher: Elsevier BV
Date: 02-1996
Publisher: Elsevier BV
Date: 06-2020
Publisher: Informa UK Limited
Date: 16-10-2014
Publisher: Wiley
Date: 07-2008
Publisher: Cambridge University Press (CUP)
Date: 12-1993
DOI: 10.1017/S0954102093000549
Abstract: The East Antarctic Craton contains only one substantial outcrop of Palaeozoic–Mesozoic strata between 0° and 150°E this lies in Mac. Robertson Land, on the eastern margin of the northern Prince Charles Mountains. These rocks are known as the Amery Group (Mond 1972, McKelvey & Stephenson 1990) and comprise dominantly fluviatile sandstones, with subordinate shales, coals and conglomerates. The lower formations of the Amery Group, the Radok Conglomerate and Bainmedart Coal Measures, contain a erse Stage 5 palynomorph assemblage indicating a Baigendzhinian–Tatarian age (late Early–Late Permian, hereafter abbreviated as mid–Late Permian Dibner 1978).
Publisher: Springer Science and Business Media LLC
Date: 21-09-2014
Publisher: Informa UK Limited
Date: 04-1994
Publisher: Wiley
Date: 08-1994
Publisher: Wiley
Date: 10-06-2013
DOI: 10.1002/ARCO.5014
Publisher: Informa UK Limited
Date: 1982
Publisher: Society for Sedimentary Geology
Date: 09-1998
DOI: 10.2110/JSR.68.981
Publisher: American Geophysical Union (AGU)
Date: 06-2016
DOI: 10.1002/2016WR018663
Publisher: American Chemical Society (ACS)
Date: 16-02-2006
DOI: 10.1021/ES0515194
Abstract: To assess the chemical stability of sludges generated by neutralizing acid rock drainage (ARD) with alkaline reagents, synthetic ARD was treated with hydrated lime (batch and high-density sludge process), limestone, and two proprietary reagents (KB-1 and Bauxsol). The amorphous metal hydroxide sludge produced was leached using deionized water, U.S. EPA methods (toxicity characteristic leaching procedure, synthetic precipitation leaching procedure), and the new strong acid leach test (SALT), which leaches the sludge with a series of sulfuric acid extractant solutions the pH decreases by approximately 1 pH unit with each test, until the final pH is approximately 2. Sludges precipitated by all reagents had very similar leachabilities except for KB-1 and Bauxsol, which released more aluminum. SALT showed that lowering the pH of the leaching solution mobilized more metals from the sludges. Iron, aluminum, copper, and zinc began to leach at pH 2.5-3, approximately 4.5, approximately 5.5, and 6-6.5, respectively. The leachability of ARD treatment sludges is determined by the final pH of the leachate. A higher neutralization potential (e.g., a greater content of unreacted neutralizing agent) makes sludges inherently more chemically stable. Thus, when ARD or any acidic metalliferous wastewater is treated, a choice must be made between efficient reagent use and resistance to acid attack.
Publisher: Elsevier BV
Date: 06-1998
Publisher: Elsevier BV
Date: 2020
Publisher: Informa UK Limited
Date: 20-11-2015
Publisher: Elsevier BV
Date: 06-2010
Publisher: Wiley
Date: 20-10-2015
DOI: 10.1002/GEA.21530
Publisher: Elsevier BV
Date: 2015
Publisher: Wiley
Date: 18-10-2011
DOI: 10.1002/ESP.2233
Publisher: Wiley
Date: 1996
DOI: 10.1002/(SICI)1099-1417(199601/02)11:1<1::AID-JQS219>3.0.CO;2-2
Publisher: MDPI AG
Date: 13-02-2017
Publisher: Informa UK Limited
Date: 12-1993
Publisher: Elsevier BV
Date: 07-2003
Publisher: Elsevier BV
Date: 07-2020
Publisher: CSIRO Publishing
Date: 2015
DOI: 10.1071/RS15020
Abstract: The Pleistocene Bridgewater Formation is well exposed at Cape Bridgewater and surrounding areas in south-western Victoria, where field studies, mineralogical and isotopic analyses and OSL dating have shown that it can be ided into three members, here named (in stratigraphic order) the Descartes Bay, Bats Ridge and Duquesne members. Each member consists of aeolian calcarenite deposited as a coastal dune, that was karstified (with solution pipe development) and then overlain by a red or purple palaeosol. The aeolianites were deposited in three distinct phases corresponding to interglacials MIS 11, MIS 9 and MIS 7, respectively, when the shoreline was near present sea level. Karstification occurred as a result of the high effective precipitation characteristic of the transition between interglacial and glacial periods, followed by aeolian dust accession and palaeosol formation during the drier, windier glacial climates. Comparison with the coeval Tamala Limestone in south-western Western Australia shows simultaneous changes in palaeoclimate: high effective precipitation during the transition from MIS 11 to MIS 10, and a relatively dry transition from MIS 9 to MIS 8. Abundant rainfall during MIS 5 caused extensive limestone dissolution (solution pipes in Victoria, pinnacles in Western Australia) and the resulting quartz sand residue was redeposited during MIS 2-4.
Publisher: SEPM Society for Sedimentary Geology
Date: 2007
Publisher: Elsevier BV
Date: 04-2009
Publisher: Elsevier BV
Date: 11-2020
Publisher: Elsevier BV
Date: 09-2018
Publisher: Wiley
Date: 06-2004
Publisher: Wiley
Date: 10-2003
Publisher: Wiley
Date: 21-10-2021
DOI: 10.1002/GEA.21887
Abstract: Hornfels was commonly utilised by Aboriginal people in southeastern Tasmania for stone artefact manufacture. Sourcing of hornfels artefacts in this region using pXRF analysis is potentially compromised by the weathering patina generally present on this lithology. To understand the impact of weathering on hornfels composition, the mineralogy and chemical composition of weathered and unweathered hornfels were analysed, and weathering was simulated in column experiments. The results demonstrate that the cordierite and, to a lesser extent, plagioclase present in the hornfels transform very rapidly into kaolinite, which is the dominant component of the pale, porous weathering patina. Weathering simulation experiments and isocon comparisons of major and trace element analyses show that this alteration is accompanied by a substantial loss of Mg, Na and Ca (≥50%). For the trace elements, 25%–35% are removed (except Zr, which is relatively immobile), with the remainder retained in unaltered minerals or adsorbed to the neoformed kaolinite. Rb and Nb are more stable than Sr, which demonstrates the highest absolute mobility, but even this element shows relatively little loss, provided that the weathering patina is mm thick. For Rb, Sr, Y, Zn and Nb, the percentage loss during weathering is similar (25%–35%), so bivariate plots of these trace elements show a spread due to weathering, but with a more or less constant ratio. As a result, pXRF analyses of these elements can be used to successfully differentiate hornfels artefacts from different sites in southeastern Tasmania. This study showed that Rb, Sr, Y and Nb, which are commonly used to source igneous artefacts, are also effective in sourcing hornfels, even though they are mobile during weathering. This study also demonstrated the importance of isocon plots in identifying the trace elements best suited to artefact sourcing using pXRF, if the analyses are affected by chemical weathering.
Publisher: Elsevier BV
Date: 11-2013
Publisher: Springer Science and Business Media LLC
Date: 19-12-2015
Publisher: Elsevier BV
Date: 04-2019
Publisher: Elsevier BV
Date: 04-2013
Publisher: Informa UK Limited
Date: 09-1986
Publisher: SEPM (Society for Sedimentary Geology)
Date: 1997
Publisher: Elsevier BV
Date: 11-1987
Publisher: Informa UK Limited
Date: 02-04-2020
Publisher: Informa UK Limited
Date: 03-04-2021
Publisher: Springer Science and Business Media LLC
Date: 11-08-2007
Publisher: BRILL
Date: 2013
Publisher: Elsevier BV
Date: 1987
Publisher: Elsevier BV
Date: 08-2019
Publisher: Geological Society of America
Date: 05-1988
Publisher: Elsevier
Date: 2013
Publisher: Wiley
Date: 02-2017
Publisher: MDPI AG
Date: 25-04-2023
DOI: 10.3390/MIN13050592
Abstract: Neutral mine drainage (NMD) at Force Crag mine in north-west England has a circumneutral pH and high levels of Zn contamination. A long-term geochemical and hydrological dataset from this site was analysed using a novel molar mass balance approach, which demonstrated that the water chemistry is dominated by species released by the oxidation of sulphides: sphalerite (Zn, Cd, Ni), galena (Pb, mostly removed by adsorption to ferrihydrite) and pyrite (Fe, mostly precipitates as ferrihydrite). The calculations show that the sphalerite:galena:pyrite oxidation ratio is ~1:2:1, but the mine water chemistry is dominated by Zn due to the removal of Pb and Fe by adsorption recipitation. The acidity released by pyrite oxidation is neutralised by the dissolution of calcite and, to a lesser extent, chlorite. The presence of pyrite is responsible both for the release of acidity and the removal of some contaminant metals by adsorption on ferrihydrite. The concentrations of sulphate, Zn, Cd and Ni in the mine water decrease with increasing flow due to dilution modest increases in metal flux with flow probably reflect increased oxidation due to greater amounts of oxygenated water flowing through the mine. In contrast, Al, Pb and Cu concentrations are positively correlated with flow due to the flushing of these metals adsorbed to ferrihydrite particles. The influence of temperature is relatively subtle metal fluxes are a balance between abiotic oxidation (which increases at higher temperatures and flows) and bacterially mediated oxidation (which is depressed at high flow rates when temperatures decrease below 10 °C). These conclusions apply to NMD mine water throughout the UK and elsewhere in the world, including mines hosted in both limestone and silicate rocks. The molar mass balance approach, together with synchronous flow and geochemistry data, provides crucial information for effective mine-water-treatment system design by elucidating the critical roles of flow rate and temperature in determining contaminant concentrations and loads.
Publisher: SPIE
Date: 11-05-2016
DOI: 10.1117/12.2223725
Publisher: Elsevier BV
Date: 11-1992
Publisher: Copernicus GmbH
Date: 26-02-2015
DOI: 10.5194/HESS-19-1107-2015
Abstract: Abstract. Despite the many studies that consider the impacts of plantation forestry on groundwater recharge, and others that explore the spatial heterogeneity of recharge in low-rainfall regions, there is little marriage of the two subjects in forestry management guidelines and legislation. Here we carry out an in-depth analysis of the impact of reforestation on groundwater recharge in a low-rainfall ( 700 mm annually), high-evapotranspiration paired catchment characterized by ephemeral streams. Water table fluctuation (WTF) estimates of modern recharge indicate that little groundwater recharge occurs along the topographic highs of the catchments (average 18 mm yr−1) instead the steeper slopes in these areas direct runoff downslope to the lowland areas, where most recharge occurs (average 78 mm yr−1). Recharge estimates using the chloride mass balance (CMB) method were corrected by replacing the rainfall input Cl− value with that for streamflow, because most recharge occurs from infiltration of runoff through the streambed and adjacent low gradient slopes. The calculated CMB recharge values (average 10 mm yr−1) are lower than the WTF recharge values (average 47 mm yr−1), because they are representative of groundwater that was mostly recharged prior to European land clearance ( BP 200 years). The tree plantation has caused a progressive drawdown in groundwater levels due to tree water use the decline is less in the upland areas. The results of this study show that spatial variations in recharge are important considerations for locating tree plantations. To conserve water resources for downstream users in low-rainfall, high-evapotranspiration regions, tree planting should be avoided in the dominant zone of recharge, i.e. the topographically low areas and along the drainage lines, and should be concentrated on the upper slopes, although this may negatively impact the economic viability of the plantation.
Publisher: Informa UK Limited
Date: 06-2008
Publisher: Springer Science and Business Media LLC
Date: 10-08-2014
Publisher: Elsevier BV
Date: 08-1998
Publisher: Cambridge University Press (CUP)
Date: 12-2000
DOI: 10.1017/S0003598X00060476
Abstract: The technical and aesthetic qualities of the many varieties of Polish flint utilized from the Middle Palaeolithic to the Bronze Age are analysed and assessed, and show how different flints were selected for different purposes.
Publisher: BRILL
Date: 2013
Publisher: Wiley
Date: 04-2022
DOI: 10.1002/ESP.5245
Publisher: Informa UK Limited
Date: 02-01-2020
Publisher: Wiley
Date: 12-08-2014
DOI: 10.1002/HYP.10281
Publisher: Elsevier BV
Date: 07-2017
Publisher: IWA Publishing
Date: 04-10-2017
DOI: 10.2166/WCC.2017.139
Abstract: Much attention has been paid to establish accurately open water evaporation since the lake itself is the largest consumer of water. The aim of this study is to assess the discrepancy in the measured (pan evaporation) and estimated (Penman) evaporation rate, seasonally, based on the results from a 37-year energy budget analysis of Lake Burrumbeet, Australia. The detailed analysis of meteorological data showed that evaporation is fully radiation driven and that the effect of wind is minimal. Sensitivity analysis shows that evaporation estimation is more sensitive to shortwave radiation followed by relative humidity. An increase or decrease of estimated shortwave radiation by 10% could result in an increase or decrease of estimated evaporation up to 18%. The Penman combination method is relatively the least sensitive to wind speed but could bring a significant effect on the lake level fluctuation since a 10% increase of wind speed increases the estimated evaporation by 2.3%. The current analysis highlights the relative roles of radiation, temperature, humidity, and wind speed in modulating the rate of evaporation from the lake surface, by employing an inter-monthly seasonal adjustment factor to the estimated evaporation in the lake water budget analysis, with implications for the inter-monthly variability and short-term trends assessment of water resource through various meteorological parameters.
Publisher: Informa UK Limited
Date: 09-1984
Publisher: Elsevier BV
Date: 2011
Publisher: Springer Science and Business Media LLC
Date: 21-09-2013
Publisher: Wiley
Date: 06-04-2001
Publisher: Geological Society of London
Date: 2000
Publisher: Elsevier BV
Date: 10-2015
Publisher: Wiley
Date: 04-2001
Publisher: Elsevier BV
Date: 05-2006
Publisher: Informa UK Limited
Date: 1987
Publisher: Elsevier BV
Date: 07-2009
Publisher: Elsevier BV
Date: 04-2019
DOI: 10.1016/J.JHAZMAT.2018.12.035
Abstract: To test the effects of secondary mineral formation on cement neutralisation of acid mine drainage (AMD), cement s les were leached with AMD and dilute sulfuric acid of approximately equal acidity. In both cases the neutralising efficiency of the cements, due to dissolution of portlandite as well as the hydrated calcium silicate and aluminate phases, decreased as secondary minerals accumulated on the cement surfaces. The AMD-leached cement became coated with Fe hydroxides, whereas the H
Publisher: Wiley
Date: 12-1993
Start Date: 03-2004
End Date: 12-2010
Amount: $570,400.00
Funder: Australian Research Council
View Funded ActivityStart Date: 02-2015
End Date: 12-2023
Amount: $356,322.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2001
End Date: 12-2002
Amount: $100,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2015
End Date: 12-2018
Amount: $970,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 01-2021
End Date: 01-2024
Amount: $340,357.00
Funder: Australian Research Council
View Funded ActivityStart Date: 11-2014
End Date: 12-2018
Amount: $186,351.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2014
End Date: 12-2018
Amount: $333,363.00
Funder: Australian Research Council
View Funded ActivityStart Date: 12-2023
End Date: 12-2028
Amount: $513,598.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2013
End Date: 12-2014
Amount: $350,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 07-2009
End Date: 12-2015
Amount: $14,999,996.00
Funder: Australian Research Council
View Funded Activity