Relevant bibliographies by topics / Sediments (Geology) Victoria

Academic literature on the topic 'Sediments (Geology) Victoria'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Sediments (Geology) Victoria"

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Holdgate, G. R., T. A. G. Smith, S. J. Gallagher, and M. W. Wallace. "Geology of coal-bearing Palaeogene sediments, onshore Torquay Basin, Victoria." Australian Journal of Earth Sciences 48, no. 5 (October 2001): 657. http://dx.doi.org/10.1046/j.1440-0952.2001.00888.x.

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Holdgate, G. R., T. A. G. Smith, S. J. Gallagher, and M. W. Wallace. "Geology of coal-bearing Palaeogene sediments, onshore Torquay Basin, Victoria." Australian Journal of Earth Sciences 48, no. 5 (October 2001): 657–79. http://dx.doi.org/10.1046/j.1440-0952.2001.485888.x.

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Fegan, N. E., D. T. Long, W. B. Lyons, M. E. Hines, and P. G. Macumber. "Metal partitioning in acid hypersaline sediments: Lake Tyrrell, Victoria, Australia." Chemical Geology 96, no. 1-2 (March 1992): 167–81. http://dx.doi.org/10.1016/0009-2541(92)90127-q.

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Webster-Brown, J. G., and K. S. Webster. "Trace metals in cyanobacterial mats, phytoplankton and sediments of the Lake Vanda region, Antarctica." Antarctic Science 19, no. 3 (June 29, 2007): 311–19. http://dx.doi.org/10.1017/s0954102007000417.

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AbstractThe degree and nature of association between trace metals (Cu, Pb, Zn, Ni, Ag, & Cd) and cyanobacterial mats, phytoplankton and sediments has been assessed in the Lake Vanda region of the Wright Valley, Victoria Land. Trace metal:Fe ratios and SEM imaging confirmed that apparent trace metal enrichment in cyanobacterial mats, relative to the sediment beneath, was due to incorporation of fine (sub-micron) sediment particles in the muciligenous matrix of the mat. In suspended particulate material (SPM) filtered from the oxic water of Lake Vanda and the Onyx River, the degree of trace metal binding to the SPM did not appear to correlate with phytoplankton content. Instead a positive correlation was observed between Fe and trace metal content. The SPM at the top of the lake water column, where only the finest sediment remains suspended, had the highest trace metal concentrations. It is concluded that the trace metal content of cyanobacterial mats and phytoplankton samples is primarily due to incorporation of fine sediment particles of high surface area which therefore enhance trace metal adsorption capacity. This reinforces the existing hypothesis that trace metal solubility in this environment is primarily controlled by abiotic processes.
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Anderson, John G., and James N. Brune. "The Victoria Accelerogram for the 1980 Mexicali Valley Earthquake." Earthquake Spectra 7, no. 1 (February 1991): 29–43. http://dx.doi.org/10.1193/1.1585611.

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Most of the remarkable digital strong motion accelerogram from the June 9, 1980 Mexicali Valley earthquake (Mw = 6.4) has been recovered by careful analysis. Peak horizontal accelerations (.98g, .87g) and duration were similar to the values for the recent Superstition Hills earthquake. The vertical accelerogram clipped the 1g instrument several times. The records provide an important example of near fault accelerations from a second earthquake in the deep sediments of the Imperial Mexicali Valley (the other being the records from the 1979 Imperial Valley earthquake). The 1980 accelerograms are important because they were not affected by foundation filtering, as were the records for the Imperial Valley 1940 earthquake, and because they illustrate the damaging near-source, intermediate frequency velocity pulse associated with passage of the rupture front.
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Viezzoli, Andrea, and James Cull. "Electrical Methods for Detection and Discrimination of Saline Groundwater in Clay-Rich Sediments in Northern Victoria." Exploration Geophysics 36, no. 3 (September 2005): 294–300. http://dx.doi.org/10.1071/eg05294.

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Cook, Y. A. "Precambrian rift-related magmatism and sedimentation, south Victoria Land, Antarctica." Antarctic Science 19, no. 4 (August 16, 2007): 471–84. http://dx.doi.org/10.1017/s0954102007000612.

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AbstractPrecambrian continental extension is described in detail for the first time in the Victoria Land segment of the Transantarctic Mountains and is comparable with plume related intercontinental rifting of the Afar area, Africa. The Baronick Formation comprises igneous-derived conglomerate, marble and volcanic to sub-volcanic igneous layers. Volcanic and carbonate horizons were eroded in a fluvial or marine environment and provided debris for mass flow and slump deposits which formed in a marginal marine basin in the Precambrian. Clasts in these deposits include basalt, trachyte and comendite, and along with the interbedded volcanic layers of basalt, trachyte and quartz syenite, indicate proximity and contemporaneity of volcanic activity. Igneous layers and source rocks for clasts of the Baronick Formation have an enriched MORB chemistry and underwent albitization of calcic feldspar before erosion and conglomerate deposition. The Highway Suite forms a kilometre-scale body of gabbro and dolerite plugs and is interpreted as a slice of transitional continental oceanic crust. The chemistry of all igneous rocks suggests a continental rift environment and the associated sediments are consistent with such a setting. The Baronick Formation was locally intruded by sills of the Highway Suite; however, the main body of the Highway Suite was juxtaposed against the Baronick Formation during greenschist facies shearing before c. 551 Ma.
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Lemenkova, Polina. "Data-driven insights into correlation among geophysical setting, topography and seafloor sediments in the Ross Sea, Antarctic." Caderno de Geografia 31, no. 64 (December 9, 2020): 1. http://dx.doi.org/10.5752/p.2318-2962.2021v31n64p1.

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Detailed mapping based on the high-resolution grids, such as GEBCO, ETOPO1, GlobSed, EGM-2008 is crucial for various domains of Earth sciences: geophysics, glaciology, Quaternary, sedimentology, geology, environmental science, geomorphology, etc. The study presented a GMT-based scripting techniques of the cartographic data processing aimed at the comparative analysis of the bathymetry, sediment thickness, geologic objects and geophysical settings in the study area based on various datasets. The study area is located in the Ross Sea, Antarctic. The highest values of the sediment thickness over 7,500 m are dominating in the southwest segment of the Ross Sea closer to the Victoria Land, followed by the region over the Ross Ice Shelf with values between 5,500 to 7,000 m (170°-175°W). The increased sediment thickness (2,500 to 3,000 m) was also mapped seen in the region NE off the Sulzberger Bay (70-75°S to 140-155°W), caused by the closeness of the Marie Bird Land ice coasts. A remarkable correlation between the gravity and the topography of the sea-land border in the Marie Bird Land area is well reflected in the coastal line and a set of the higher values in the free-air gravity. On the contrary, negative values (–60 to -80 mGal) are notable along the submarine toughs stretching parallel in the western part of the basin: e.g. the trough stretching in NW-SE direction in the 170°W-175°E, 65°S-68°S, between the 167°W-175°W, 70°S-72°S. Such correlations are clearly visible on the map, indicating geological lineaments and bathymetric depressions correlating with gravity grids. The paper contributes to the regional studies of the Ross Sea, the Antarctic and Polar region, and development of the cartographic technical methodologies by presenting an application of the GMT for thematic mapping.
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Webb, J. A., D. Fabel, B. L. Finlayson, M. Ellaway, Li Shu, and H. P. Spiertz. "Denudation chronology from cave and river terrace levels: the case of the Buchan Karst, southeastern Australia." Geological Magazine 129, no. 3 (May 1992): 307–17. http://dx.doi.org/10.1017/s0016756800019245.

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AbstractDetailed 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.
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Ricci, C. A., F. Talarico, R. Palmeri, G. Di Vincenzo, and P. C. Pertusati. "Eclogite at the Antarctic palaeo-Pacific active margin of Gondwana (Lanterman Range, northern Victoria Land, Antarctica)." Antarctic Science 8, no. 3 (September 1996): 277–80. http://dx.doi.org/10.1017/s0954102096000399.

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Well-preserved eclogites were found for the first time in Antarctica, at the Lanterman Range, northern Victoria Land. They are part of a mafic–ultramafic belt that lies between the Wilson Terrane, representing part of the palaeo-Pacific margin of Gondwana, and the Bowers Terrane, a Cambro-Ordovician volcanic are and related sediments, accreted to the margin during the Ross Orogeny. The eclogites formed at temperatures in the range 750–850°C and pressures above 15 kbar and subsequently experienced a decompressional path to low pressure amphibolite facies conditions. The formation and exhumation of eclogites and the attainment of the metamorphic peak in adjacent rock units is consistent with a plate convergent setting model at the palaeo-Pacific margin of Gondwana.
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Dissertations / Theses on the topic "Sediments (Geology) Victoria"

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Sharpe, David Robert. "Glacial sediments and landforms, southern Victoria Island, Northwest Territories, Canada." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7846.

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Wollaston Peninsula and most of southern Victoria Island comprise Palaeozoic carbonate lowlands, scarps, and tableland situated between rises and arches of underlying Precambrian sedimentary and igneous rocks. Quaternary sediments are hummocky, thick and ice-cored near escarpments where ice flow resistance, thrusting and meltwater concentrated glacial debris; thinner, streamlined drift occurs in lowlands. Quaternary sediments are mainly Late Wisconsinan in age. Glacial sediments predominate but surficial raised marine and periglacial sediments are noted. Fluvial modification of the landscape is minor. Many of the spectacular glacial landforms on Wollaston Peninsula are streamlined and indicate formation under thick, warm-based (i.e. free subglacial water) glaciers. A set of distinctive landforms, including ground moraine (with small moraines and marginal channels), hummocky moraine, lateral moraines, and streamlined forms, relates to varying flow conditions within one major glacial advance. Stratified drift within moraines indicates the importance of glaciofluvial processes in addition to ice action. Collectively, these landforms record ice-marginal retreat, marginal stagnation following compressional flow, surging, flooding and regional stagnation during deglaciation. Freeze-on and ice stagnation trapped extensive bodies of drift-rich ice in zones of hummocky moraine. Arborescent networks of narrow eskers record subglacial meltwater drainage beneath major ice lobes and long broad eskers record subaerial deposition by meltwater of mainly supraglacial derivation. Late glacial events are dated relative to the incursion of the sea during deglaciation of northwest areas of Wollaston Peninsula by about 12 000 BP. Active ice-marginal conditions existed just before 10 000 BP, during formation of the large Colville moraines. Ice downwasted in the area causing glacier thinning. Prominent ground-ice features include pingos, thermokarst scars, and debris-flow lobes. Ground ice occurs as massive icy bodies, ice-wedge ice, and buried pingo ice. Based on its setting in hummocky moraine, its stratigraphy, debris content, and isotopic composition, the massive ice is likely buried glacial ice. Landscape modification by thermokarst erosion has produced ubiquitous diamictons similar to till, and landforms similar to glacial forms. Thick ground ice bodies exist only above marine limit and the limits of streamlined landforms because permafrost degradation occurred below these limits. Widespread thaw slumps and large-scale thermal contraction cracks also indicate ice-cored terrain.
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Basapuram, Laxmi Gayatri Devi. "Lake Victoria - Carbon, Nitrogen, Phosphorus and Stable Isotope (δ13C) comparison between lake and catchment sediments." Thesis, Linköpings universitet, Tema Miljöförändring, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149283.

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Lake Victoria situated in East Africa faces an acute problem with eutrophication. Many reasons like agricultural production, industrialization, anthropogenic processes, the introduction of species, and economic activities have caused a stress to the overall well-being of the lake. Excess carbon, nitrogen, and phosphorus drive an increase in productivity which affects eutrophication. Previous studies on sediments and nutrient concentrations in the lake have concluded that nutrient concentrations increase due to release from the catchment. This study focuses on catchment sediments collected from four different sites and compares the results with sediments from two additional sites in the lake. The sediment core from Siaya indicates the highest concentrations of TOC (180 g/kg), TN (13 g/kg) and TP (17000μg/L). It is a rural site and poor agricultural practices such as the burn and slash, use of too many fertilizers, clearance of land, atmospheric deposition and precipitation increase elemental concentrations in the sediments compared to the more urban sites. In the lake sediments, the BILL core had higher concentrations of TP (430g/kg) and TN (16 g/kg) compared to the other site (LV-95) which is located far away from the margins of the lake. This core, however, had high TOC levels (180g/kg). The increase of nutrient levels in lake sediments is thought to be due to non-point sources from the catchment. Analyses of stable carbon isotope were used to infer the different organic matter source in the sediments. Based on the range of values for δ13C vs. C/N it is inferred that aquatic algal production and C4 vascular plants are the dominant sources for the organic matter input. The chemical characterization of catchment and lake sediments provides a qualitative link to nutrient influx and eutrophication in the lake.
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Jones, Katie Elizabeth. "Contemporary sediment delivery ratios for small catchments subject to shallow rainfall triggered earthflows in the Waipaoa catchment, North Island, New Zealand : a thesis submitted to the Victoria University of Wellington as partial fulfilment of the requirements for the degree of Master of Science with Honours in Physical Geography /." ResearchArchive@Victoria e-thesis, 2009. http://hdl.handle.net/10063/1197.

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Dean, C. E. "Lake carbonate geochemistry as a proxy for paleohydrology: a validation-in-time at West Basin Lake, Victoria." Thesis, 2019. https://hdl.handle.net/2440/136950.

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There is a lack of extensive historical climate data in Australia, meaning high-resolution paleoclimate studies are essential for a more comprehensive understanding of natural climate variability. The majority of paleohydrology records in south-eastern Australia region are low resolution, millennial time-scale reconstructions, resulting in a lack of understanding of climate variability at shorter time-scales relevant to human life spans. Here, we attempt to validate the use of geochemical analysis of lake sediments from West Basin, Victoria, as a way to create a high resolution paleohydrology reconstruction. The isotopic composition of the lake water in West Basin is primarily controlled by the precipitation to evaporation ratio (P:E). Ostracod calcite and bulk inorganic carbonates (BIC) that form within the water column reflect these changes and thus are used as proxies of past changes in P:E. This reconstruction is supported by a 210Pb- and 240/230Pu-based chronology which estimates a sediment accumulation rate of 0.3 to 0.4 cm/year and a maximum age at 40 cm of 118 years. This enables the resulting oxygen and carbon profiles to be validated against instrumental records of annual rainfall and temperature. The oxygen profile exhibits good agreement with this climate record, with peaks in δ18O values often coinciding with periods of low annual rainfall. Based on this, the ostracod record was determined to be capable of recording reliable, high resolution changes in P:E. The BIC record, though less consistent, can produce a detailed profile where ostracods are unavailable. Studies of this kind are vital to improving the accuracy of proxy system models which allow for reconstructions to be extended further in the geological record. Such models would allow for contextual understanding of the severity of drought occurrences and the assessment of the possible impacts of human induced climate change.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2019
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Lockier, E. R. "Hydroclimate variability during the past millennium: a new record from West Basin Lake, Victoria." Thesis, 2015. http://hdl.handle.net/2440/118187.

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Our understanding of the long-term climate variability in Australia is limited by the number of high-resolution climate reconstructions. High-resolution palaeoenvironmental studies in Australia spanning more than a millennium are required to identify regional coherency among records and to recognise the relationships between climate and environmental conditions. This research project aims to investigate the nature of decadal-centennial scale climate and hydroclimate variability in south-eastern Australia. A record of hydrological change is established for the past millennium at West Basin Lake, a maar lake located in western Victoria. Palaeoclimate variability is inferred from sedimentary diatom analysis and is used to reconstruct lake water salinity. These data are interpreted in conjunction with element concentration data. The record indicates that West Basin Lake underwent hydrological variability on a decadal-centennial timescale. The diatom record shows evidence of a more variable climate during 932-550 cal BP and less saline conditions from 500-100 cal BP. The record also identifies a multi-decadal period of increased salinity from 625-575 cal BP. This suggests a more variable climate during the past millennium than observed since European settlement. The record established from this study provides a regionally coherent palaeoclimate reconstruction of the last millennium for western Victoria, Australia.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2015
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Books on the topic "Sediments (Geology) Victoria"

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Azza, N. G. T. The Dynamics of Shoreline Wetlands and Sediments of Northern Lake Victoria. Taylor & Francis Ltd, 2006.

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