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Full-Text Articles in Social and Behavioral Sciences
Quaternary Calcarenite Stratigraphy On Lord Howe Island, Southwestern Pacific Ocean And The Record Of Coastal Carbonate Deposition, Brendan Brooke, Colin Woodroffe, Colin Murray-Wallace, H Heijnis, Brian Jones
Quaternary Calcarenite Stratigraphy On Lord Howe Island, Southwestern Pacific Ocean And The Record Of Coastal Carbonate Deposition, Brendan Brooke, Colin Woodroffe, Colin Murray-Wallace, H Heijnis, Brian Jones
B. G. Jones
Lord Howe Island is a small, mid-ocean volcanic and carbonate island in the southwestern Pacific Ocean. Skeletal carbonate eolianite and beach calcarenite on the island are divisible into two formations based on lithostratigraphy. The Searles Point Formation comprises eolianite units bounded by clay-rich paleosols. Pore-filling sparite and microsparite are the dominant cements in these eolianite units, and recrystallised grains are common. Outcrops exhibit karst features such as dolines, caves and subaerially exposed relict speleothems. The Neds Beach Formation overlies the Searles Point Formation and consists of dune and beach units bounded by weakly developed fossil soil horizons. These younger deposits …
A Review And Synthesis Of Glendonites (Pseudomorphs After Ikaite) With New Data: Assessing Applicability As Recorders Of Ancient Coldwater Conditions, Bruce Selleck, Paul Carr, Brian Jones
A Review And Synthesis Of Glendonites (Pseudomorphs After Ikaite) With New Data: Assessing Applicability As Recorders Of Ancient Coldwater Conditions, Bruce Selleck, Paul Carr, Brian Jones
B. G. Jones
No abstract provided.
Gpr Surveys Of Vegetated Linear Dune Stratigraphy In Central Australia: Evidence For Linear Dune Extension With Vertical And Lateral Accretion, Gerald Nanson, Brian Jones, David Price, C Bristow, Cameron Hollands, Maria Coleman
Gpr Surveys Of Vegetated Linear Dune Stratigraphy In Central Australia: Evidence For Linear Dune Extension With Vertical And Lateral Accretion, Gerald Nanson, Brian Jones, David Price, C Bristow, Cameron Hollands, Maria Coleman
B. G. Jones
No abstract provided.
Holocene Sea-Level Change On The Southeast Coast Of Australia: A Review, Colin Murray-Wallace, Brian Jones, Craig Sloss
Holocene Sea-Level Change On The Southeast Coast Of Australia: A Review, Colin Murray-Wallace, Brian Jones, Craig Sloss
B. G. Jones
No abstract provided.
Thermoluminescence Ages For A Reworked Coastal Barrier, Southeastern Vietnam: A Preliminary Report, Colin Murray-Wallace, Brian Jones, Tran Nghi, David Price, Vu Vinh, Trinh Tinh, Gerald Nanson
Thermoluminescence Ages For A Reworked Coastal Barrier, Southeastern Vietnam: A Preliminary Report, Colin Murray-Wallace, Brian Jones, Tran Nghi, David Price, Vu Vinh, Trinh Tinh, Gerald Nanson
B. G. Jones
Thermoluminescence dating of quartz sand (90-125 μm) from the coastal barrier successions between Phan Thiet and Tuy Phong, southeastern Vietnam, reveals that a substantial component was deposited during the last interglacial sensu lato (Oxygen Isotope Stage 5) between 108 and 85 ka. The barrier successions have subsequently, in places, experienced multiple phases of aeolian reworking during the last glacial cycle, and in particular between 62 and 19 ka, possibly related to reduced vegetation cover and landscape instability caused by climatic change. The difficulties of applying the thermoluminescence (TL) method in areas of intense tropical weathering are also examined.
Geochemical Comparisons Between Estuaries With Non-Industrialised And Industrialised Catchments: The Huon And Derwent River Estuaries, Tasmania, Brian Jones, Bryan Chenhall, F Debretsion, Adrian Hutton
Geochemical Comparisons Between Estuaries With Non-Industrialised And Industrialised Catchments: The Huon And Derwent River Estuaries, Tasmania, Brian Jones, Bryan Chenhall, F Debretsion, Adrian Hutton
B. G. Jones
The adjacent Huon and Derwent estuaries in Tasmania have similar climatic and physical characteristics, and provide a good comparison between relatively uncontaminated and industrially polluted estuaries, respectively. Representative samples were collected from both estuaries and analysed for grainsize and trace‐element content (using X‐ray fluorescence and neutron activation analyses). The Huon estuary drains a predominantly forested and agricultural catchment and contains low (baseline) concentrations of trace elements, including lead, zinc and copper. In contrast, the Derwent estuary has a geologically similar yet larger catchment and it passes through an industrialised area in the midestuarine reach. A zinc refinery has, in the …
Morphological And Stratigraphic Evolution Of Wandandian Creek Delta, St Georges Basin, New South Wales, Carl Hopley, Brian Jones
Morphological And Stratigraphic Evolution Of Wandandian Creek Delta, St Georges Basin, New South Wales, Carl Hopley, Brian Jones
B. G. Jones
No abstract provided.
Late Quaternary Mega-Lakes Fed By The Northern And Southern River Systems Of Central Australia: Varying Moisture Sources And Increased Continental Aridity, T Cohen, G Nanson, John Jansen, B Jones, Z Jacobs, J Larsen, J.-H May, P Treble, D Price, A Smith
Late Quaternary Mega-Lakes Fed By The Northern And Southern River Systems Of Central Australia: Varying Moisture Sources And Increased Continental Aridity, T Cohen, G Nanson, John Jansen, B Jones, Z Jacobs, J Larsen, J.-H May, P Treble, D Price, A Smith
B. G. Jones
Optically stimulated and thermoluminescence ages from relict shorelines, along with accelerator mass spectrometer 14C ages from freshwater molluscs reveal a record of variable moisture sources supplied by northern and southern river systems to Lake Mega-Frome in southern central Australia during the late Quaternary. Additional lacustrine, palynological and terrestrial proxies are used to reconstruct a record that extends back to 105 ka, confirming that Lakes Mega-Frome and Mega-Eyre were joined to create the largest system of palaeolakes on the Australian continent as recently as 50-47 ka. The palaeohydrological record indicates a progressive shift to more arid conditions, with marked drying after …
Use Of 210pb And 137cs To Simultaneously Constrain Ages And Sources Of Post-Dam Sediments In The Cordeaux Reservoir, Sydney, Australia, Ava Simms, Colin Woodroffe, Brian Jones, H Heijnis, Rob Mann, J. Harrison
Use Of 210pb And 137cs To Simultaneously Constrain Ages And Sources Of Post-Dam Sediments In The Cordeaux Reservoir, Sydney, Australia, Ava Simms, Colin Woodroffe, Brian Jones, H Heijnis, Rob Mann, J. Harrison
B. G. Jones
Environmental radionuclides can be employed as tracers of sediment movement and delivery to water bodies such as lakes and reservoirs. The chronologies of sediments that have accumulated in the Cordeaux reservoir in Sydney, Australia, were determined by the rate of change of 210Pbex with depth and indicate slow accretion in the reservoir. The ratio of enrichment of radionuclides in sediment cores to 210Pbex and 137Cs concentrations in a reference soil sample within the Cordeaux catchment indicates that the dominant source of sediment in the Cordeaux reservoir is surface erosion (detachment and removal of sediment at depths less than 30 cm). …
On The Possible Origins Of An Unusual (Mid To Late Holocene) Coastal Deposit, Old Punt Bay, South-East Australia, Brian Jones, Adam Switzer, S Haslett, Dale Dominey-Howes, D Everett, C Courtney, B Mamo, L Strotz
On The Possible Origins Of An Unusual (Mid To Late Holocene) Coastal Deposit, Old Punt Bay, South-East Australia, Brian Jones, Adam Switzer, S Haslett, Dale Dominey-Howes, D Everett, C Courtney, B Mamo, L Strotz
B. G. Jones
An unusual coarse, shelly sedimentary unit is found elevated above present mean sea level in a sheltered pocket embayment at Old Punt Bay in south-eastern Australia. The coarse sediments, diverse microfauna, and large shelly macrofauna of mixed affinity suggest that the deposit is the result of high-energy deposition. The deposit was previously thought to have been deposited 1000-1300 cal bp based on one shell dated using 14C and amino acid racemisation. However, additional 14C dating indicates a likely age of ~2500 cal bp. Regardless of age constraints, the presence of rock-encrusting oyster shells and large articulated bivalves, suggests that the …
Patterns And Rates Of Sedimentary Infill In The Minnamurra River Estuary, South-Eastern Australia, K Panayotou, Colin Woodroffe, Brian Jones, Bryan Chenhall, Errol Mclean, H Heijnis
Patterns And Rates Of Sedimentary Infill In The Minnamurra River Estuary, South-Eastern Australia, K Panayotou, Colin Woodroffe, Brian Jones, Bryan Chenhall, Errol Mclean, H Heijnis
B. G. Jones
This paper presents a revised process-based model that explores aspects of estuarine geomorphology and the rates and patterns of sedimentary infill based upon the Minnamurra River estuary, a mature barrier estuary in south-eastern Australia. The Minnamurra River is located on the south coast of New South Wales and is characterised by three main facies: a marine flood tide delta/barrier, a central lagoon/estuary and a fluvial delta. The sedimentary record in this system was examined in detail to quantify the rate of estuarine infill. This predominantly infilled mature barrier estuary is now largely dominated by river influence. In the early stages …
Mobility Of Sediment Grain Size Distributions On A Wave Dominated Continental Shelf, Southeastern Australia, Brian Jones, Jonathan Griffin, Mark Hemer
Mobility Of Sediment Grain Size Distributions On A Wave Dominated Continental Shelf, Southeastern Australia, Brian Jones, Jonathan Griffin, Mark Hemer
B. G. Jones
No abstract provided.
Contrasting Sedimentation Rates In Lake Illawarra And St Georges Basin, Two Large Barrier Estuaries On The Southeast Coast Of Australia, Colin Murray-Wallace, Brian Jones, Craig Sloss, H Heijnis, B Brooke
Contrasting Sedimentation Rates In Lake Illawarra And St Georges Basin, Two Large Barrier Estuaries On The Southeast Coast Of Australia, Colin Murray-Wallace, Brian Jones, Craig Sloss, H Heijnis, B Brooke
B. G. Jones
Sedimentation rates over the last 100 years within two lagoons on the southeast coast of Australia, Lake Illawarra and St Georges Basin, have been quantified to determine the effects of catchment land use change and native vegetation clearance on infill rates, and spatial variations in the rate at which the estuaries have filled. Both catchments have similar lake and catchment area but have experience different degrees of modification due to land clearing for agriculture practices, urbanisation and industrialisation. Results indicate that in the heavily modified catchment of Lake Illawarra sedimentation rates close to fluvial deltas can be in excess of …
Reconstructing Recent Sedimentation In Two Urbanised Coastal Lagoons (Nsw, Australia) Using Radioisotopes And Geochemistry, Brian Jones, H Heijnis, J. Harrison, Suzanne Hollins, S Hankin, Atun Zawadzki
Reconstructing Recent Sedimentation In Two Urbanised Coastal Lagoons (Nsw, Australia) Using Radioisotopes And Geochemistry, Brian Jones, H Heijnis, J. Harrison, Suzanne Hollins, S Hankin, Atun Zawadzki
B. G. Jones
In this study, we combined grain size and geochemical analyses with radioisotope analysis of lead-210 (210Pb), caesium-137 (137Cs) and radiocarbon (14C) ages to reconstruct the sedimentation history of two urbanised coastal lagoons in south-east Australia. Towradgi and Fairy Lagoons were both found to exhibit slow initial sedimentation of less than 1 mm year-1 prior to anthropogenic influences. Land clearing in the catchments increased runoff and erosion in the creeks feeding into the estuaries, and has resulted in progradation of fluvial material into the estuarine systems with a marked increase in sedimentation to between 2 and 7 mm year-1. The upper …
Geochemical Consequences Of The Permian-Triassic Mass Extinction In A Non-Marine Succession, Sydney Basin, Australia, M Williams, B Jones, P Carr
Geochemical Consequences Of The Permian-Triassic Mass Extinction In A Non-Marine Succession, Sydney Basin, Australia, M Williams, B Jones, P Carr
B. G. Jones
The identification of the Permian–Triassic boundary (PTB) and Permian–Triassic mass extinction event (PTME) in eastern Australia is based primarily on palynological and plant fossil evidence with limited δ13Corg data from the northern part of the Sydney Basin. Consequently, the PTB in the Sydney Basin has been placed at the top of the last Permian coal measures. Here we report carbon and nitrogen isotopic data, together with major element, trace element and mineralogical data, for a continuous non‐marine Permian–Triassic (P–Tr) section from the southern Sydney Basin. The PTME is identified by a negative shift in δ13Corg of ~ 3.8‰ occurring approximately …
The Geomorphology Of The Flanks Of The Lord Howe Island Volcano, Tasman Sea, Australia, D. Kennedy, B. Brooke, Colin Woodroffe, Brian Jones, C. Waikari, S. Nichol
The Geomorphology Of The Flanks Of The Lord Howe Island Volcano, Tasman Sea, Australia, D. Kennedy, B. Brooke, Colin Woodroffe, Brian Jones, C. Waikari, S. Nichol
B. G. Jones
No abstract provided.
Assessing The Recent (1834-2002) Morphological Evolution Of A Rapidly Prograding Delta Within A Gis Framework: Macquarie Rivulet Delta, Lake Illawarra, New South Wales, Marjetta Puotinen, Brian Jones, Carl Hopley
Assessing The Recent (1834-2002) Morphological Evolution Of A Rapidly Prograding Delta Within A Gis Framework: Macquarie Rivulet Delta, Lake Illawarra, New South Wales, Marjetta Puotinen, Brian Jones, Carl Hopley
B. G. Jones
No abstract provided.
Geomorphic Evidence For Mid-Late Holocene Higher Sea Level From Southeastern Australia, Adam Switzer, Craig Sloss, Brian Jones, C. Bristow
Geomorphic Evidence For Mid-Late Holocene Higher Sea Level From Southeastern Australia, Adam Switzer, Craig Sloss, Brian Jones, C. Bristow
B. G. Jones
No abstract provided.
The Influence Of Palaeoenvironment And Lava Flux On The Emplacement Of Submarine, Near-Shore Late Permian Basalt Lavas, Sydney Basin (Australia), Paul Carr, Brian Jones
The Influence Of Palaeoenvironment And Lava Flux On The Emplacement Of Submarine, Near-Shore Late Permian Basalt Lavas, Sydney Basin (Australia), Paul Carr, Brian Jones
B. G. Jones
Lava flux and a low palaeoslope were the critical factors in determining the development of different facies in the Late Permian Blow Hole flow, which comprises a series of shoshonitic basalt lavas and associated volcaniclastic detritus in the southern Sydney Basin of eastern Australia. The unit consists of a lower lobe and sheet facies, a middle tube and breccia facies, and an upper columnar-jointed facies. Close similarities in petrography and geochemistry between the basalt lavas from the three facies suggest similar viscosities at similar temperatures. Sedimentological and palaeontological evidence from the sedimentary units immediately below the Blow Hole flow suggests …
The Holocene Infill Of Lake Conjola, A Narrow Incised Valley System On The Southeast Coast Of Australia, Craig Sloss, Brian Jones, Adam Switzer, Scott Nichol, Alastair Clement, William Nicholas
The Holocene Infill Of Lake Conjola, A Narrow Incised Valley System On The Southeast Coast Of Australia, Craig Sloss, Brian Jones, Adam Switzer, Scott Nichol, Alastair Clement, William Nicholas
B. G. Jones
No abstract provided.
Sea Level, Storm, Or Tsunami: Engimatic Sand Sheet Deposits In A Sheltered Coastal Embayment From Southeastern New South Wales, Australia, Edward Bryant, Brian Jones, Kevin Pucillo, Rabea Haredy, Adam Switzer
Sea Level, Storm, Or Tsunami: Engimatic Sand Sheet Deposits In A Sheltered Coastal Embayment From Southeastern New South Wales, Australia, Edward Bryant, Brian Jones, Kevin Pucillo, Rabea Haredy, Adam Switzer
B. G. Jones
No abstract provided.
The Sedimentary Record Of Palaeoenvironments And Sea-Level Change In The Gulf Of Carpentaria, Australia, Through The Last Glacial Cycle, Jessica Reeves, Allan Chivas, Adriana Garcia, Sabine Holt, Martine Couapel, Brian Jones, Dionisio Cendon, David Fink
The Sedimentary Record Of Palaeoenvironments And Sea-Level Change In The Gulf Of Carpentaria, Australia, Through The Last Glacial Cycle, Jessica Reeves, Allan Chivas, Adriana Garcia, Sabine Holt, Martine Couapel, Brian Jones, Dionisio Cendon, David Fink
B. G. Jones
Environmental evolution of the Gulf of Carpentaria region, the world's largest tropical epicontinental seaway, through the last glacial cycle has been determined from a series of six sediment cores. These cores form the focus of a multi-disciplinary study to elucidate sea level, climate and environmental change in the region. The sedimentary record reveals a series of facies including open shallow marine, marginal marine, estuarine, lacustrine and subaerial exposure, throughout the extent of the basin during this period. The partial or complete closure of the central basin from marine waters results from sea level falling below the height of one or …
Aspartic Acid Racemisation Dating Of Mid-Holocene To Recent Estuarine Sedimentation In New South Wales, Australia: A Pilot Study, C Sloss, C Murray-Wallace, B Jones, T Wallin
Aspartic Acid Racemisation Dating Of Mid-Holocene To Recent Estuarine Sedimentation In New South Wales, Australia: A Pilot Study, C Sloss, C Murray-Wallace, B Jones, T Wallin
B. G. Jones
The degree of aspartic acid racemisation measured in radiocarbon-dated specimens of fossil estuarine molluscs, collected from Lake Illawarra, a Holocene barrier estuary in New South Wales, Australia, is evaluated in the context of results of laboratory-induced racemisation established in heating (simulated ageing) experiments. The general kinetic trend of aspartic acid racemisation in both heating experiments and fossil molluscs Anadara trapezia and Notospisula trigonella conforms to a model of apparent parabolic kinetics. Using the apparent parabolic kinetic model, numeric ages based on the degree of aspartic acid racemisation in the fossil molluscs have been calculated. An aminostratigraphy of the Lake Illawarra …
Holocene Sea Level Fluctuations And The Sedimentary Evolution Of A Barrier Estuary: Lake Illawarra, New South Wales, Australia, Colin Murray-Wallace, Brian Jones, Craig Sloss, C.E. Mcclennen
Holocene Sea Level Fluctuations And The Sedimentary Evolution Of A Barrier Estuary: Lake Illawarra, New South Wales, Australia, Colin Murray-Wallace, Brian Jones, Craig Sloss, C.E. Mcclennen
B. G. Jones
No abstract provided.
Holocene Evolution Of The Minnamurra River Estuary, Southeast Australia: Foraminiferal Evidence, S. Haslett, R. Davies-Burrows, K. Panayotou, Brian Jones, Colin Woodroffe
Holocene Evolution Of The Minnamurra River Estuary, Southeast Australia: Foraminiferal Evidence, S. Haslett, R. Davies-Burrows, K. Panayotou, Brian Jones, Colin Woodroffe
B. G. Jones
No abstract provided.
Recognition Of Late Cretaceous Hasanbag Ophiolite-Arc Rocks In The Kurdistan Region Of The Iraqi Zagros Suture Zone: A Missing Link In The Paleogeography Of The Closing Neotethys Ocean, Sarmad Ali, S Buckman, K Aswad, B Jones, S Ismail, A Nutman
Recognition Of Late Cretaceous Hasanbag Ophiolite-Arc Rocks In The Kurdistan Region Of The Iraqi Zagros Suture Zone: A Missing Link In The Paleogeography Of The Closing Neotethys Ocean, Sarmad Ali, S Buckman, K Aswad, B Jones, S Ismail, A Nutman
B. G. Jones
The Hasanbag igneous complex is situated near Sidekan, 100 km northeast of Erbil city, Kurdistan Region, within the Iraqi Zagros suture zone. It forms part of an ophiolite-bearing terrane referred to as the "Upper Allochthon" or Gemo-Qandil Group. The Hasanbag igneous complex consists predominantly of calc-alkaline basaltic andesites to andesites cut by microgabbro and diorite dikes, which previously were interpreted as a part of the Eocene Walash volcanic group. However, 40Ar-39Ar dates on Hasanbag igneous complex kaersutite (magmatic hornblende) indicate an Albian-Cenomanian age (106-92 Ma). This reveals a previously unrecognized portion of the Late Cretaceous, Neotethyan ophiolite-arc complexes in the …
Morphological Changes, Assessed Within A Gis Framework, In The Prograding Macquarie Rivulet Delta, New South Wales, Carl Hopley, Brian Jones, Marjetta Puotinen
Morphological Changes, Assessed Within A Gis Framework, In The Prograding Macquarie Rivulet Delta, New South Wales, Carl Hopley, Brian Jones, Marjetta Puotinen
B. G. Jones
No abstract provided.
The Charophyte Lamprothamnium Succinctum As An Environmental Indicator: A Holocene Example From Tom Thumbs Lagoon, Eastern Australia, Adriana Garcia, Brian Jones, Bryan Chenhall, Colin Murray-Wallace
The Charophyte Lamprothamnium Succinctum As An Environmental Indicator: A Holocene Example From Tom Thumbs Lagoon, Eastern Australia, Adriana Garcia, Brian Jones, Bryan Chenhall, Colin Murray-Wallace
B. G. Jones
The palaeobiota from a middle to late Holocene succession in Tom Thumbs Lagoon, N.S.W., Australia, reflects a range of environmental conditions caused by sea-level changes and active estuarine sedimentation. At the base of the succession (~ -0.4 m AHD) a thin bed, containing molluscs dated at 6.7 ka B.P. by radiocarbon and amino acid racemisation, and foraminifers is indicative of open estuarine conditions. From +0.35 m AHD towards the top of the sequence the charophyte Lamprotharanium succinctum occurs in subrecent deposits. This species is charactedsed here by statistical measurements, and new characters are described and illustrated. The charophytes record a …
Identification Of The Permian-Triassic Boundary In The Southern Sydney Basin, Megan Williams, Paul Carr, Brian Jones
Identification Of The Permian-Triassic Boundary In The Southern Sydney Basin, Megan Williams, Paul Carr, Brian Jones
B. G. Jones
No abstract provided.
Anthropogenic Effects In A Coastal Lagoon: Geochemical Characterization Of Burrill Lake, Nsw, Australia, Brian Jones, Hannah Killian, Bryan Chenhall, Craig Sloss
Anthropogenic Effects In A Coastal Lagoon: Geochemical Characterization Of Burrill Lake, Nsw, Australia, Brian Jones, Hannah Killian, Bryan Chenhall, Craig Sloss
B. G. Jones
Burrill Lake, a small coastal lagoon on the south coast of New South Wales, developed as an impounded drowned river valley following the post-glacial marine transgression. Marine sand fills the entrance to the lagoon whereas the back-barrier basin has accumulated organic-rich mud and sandy bayhead deltas. The bilobate form of the estuary coincides with two different catchment lithologies and land use patterns. The northern lobe drains an agricultural catchment and has a much larger bayhead delta than the southern lobs that drains natural and state forest. Sedimentation rates within the muddy lagoonal deposits are about 1.7 mm/yr. The distributions of …