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Late Llandovery (Early Silurian) Dendroid Graptolites From The Cotton Formation Near Forbes, New South Wales, R B. Rickards, Anthony J. Wright, G Thomas
Late Llandovery (Early Silurian) Dendroid Graptolites From The Cotton Formation Near Forbes, New South Wales, R B. Rickards, Anthony J. Wright, G Thomas
Faculty of Science - Papers (Archive)
A well-preserved dendroid graptolite fauna of Early Silurian (late Llandovery: probable turriculatus graptolite zone) age is described from the Cotton Formation near Forbes, New South Wales. A possible rhabdopleuran hemichordate is described from Australia for the fi rst time. The fauna consists of 13 taxa as follows: Dendrograptus sp. aff. D. avonleaensis, Dictyonema zalasiewiczi sp. nov., Dictyonema sp. aff. D. paululum australis, Dictyonema paululum australis, Dictyonema sp. aff. D. sp. cf. D. venustus of Bulman (?ssp. nov.), Dictyonema venustum, Dictyonema sp. cf. D. falciferum, Callograptus bridgecreekensis, Callograptus rigbyae, Callograptus sp. aff. C. ulahensis, Stelechocladia sp. cf. S. praeattenuata, Acanthograptus praedeckeri …
Interactions Between Deformation And Fluids In The Frontal Thrust Region Of The Nantroseize Transect Offshore The Kii Peninsula, Japan: Results From Iodp Expedition 316 Sites C0006 And C0007, E Screaton, G Kimura, D Curewitz, G Moore, F Chester, O Fabbri, Christopher L. Fergusson, F Girault, D Goldsby, R Harris, F Inagaki, T Jiang, Y Kitamura, M Knuth, C-F Li, L Claesson Liljedahl, L Louis, K Milliken, U Nicholson, N Riedinger, A Sakaguchi, E Solomon, M Strasser, X Su, A Tsutsumi, A Yamaguchi, K Ujiee, X. Zhao
Interactions Between Deformation And Fluids In The Frontal Thrust Region Of The Nantroseize Transect Offshore The Kii Peninsula, Japan: Results From Iodp Expedition 316 Sites C0006 And C0007, E Screaton, G Kimura, D Curewitz, G Moore, F Chester, O Fabbri, Christopher L. Fergusson, F Girault, D Goldsby, R Harris, F Inagaki, T Jiang, Y Kitamura, M Knuth, C-F Li, L Claesson Liljedahl, L Louis, K Milliken, U Nicholson, N Riedinger, A Sakaguchi, E Solomon, M Strasser, X Su, A Tsutsumi, A Yamaguchi, K Ujiee, X. Zhao
Faculty of Science - Papers (Archive)
Integrated Ocean Drilling Program (IODP) Expedition 316 Sites C0006 and C0007 examined the deformation front of the Nankai accretionary prism offshore the Kii Peninsula, Japan. In the drilling area, the frontal thrust shows unusual behavior as compared to other regions of the Nankai Trough. Drilling results, integrated with observations from seismic reflection profiles, suggest that the frontal thrust has been active since similar to 0.78-0.436 Ma and accommodated similar to 13 to 34% of the estimated plate convergence during that time. The remainder has likely been distributed among out-of-sequence thrusts further landward and/or accommodated through diffuse shortening. Unlike results of …
Validation Of Ozone Measurements From The Atmospheric Chemistry Experiment (Ace), Nicholas B. Jones, David W. Griffith, M Wolff, E Mahieu, G Bodeker, I Boyd, M De Maziere, P Demoulin, T Blumenstock, Y. Murayama, A. Kagawa, J Jin, Christopher Mcelroy, J Hannigan, M Coffey, M Hopfner, H W. Fischer, T Kerzenmacher, I Kramer, J Mellqvist, R Sussmann, K Strong, J R. Taylor, K Mizutani, Y Kasai, J Urban, D Murtagh, E Dupuy, V Catoire, S Chabrillat, P Baron, C Brogniez, G L. Manney, C Piccolo, C Randall, C Robert, C Senten, C Tetard, N J. Livesey, A Kleinbohl, S Godin-Beekmann, T Borsdorff, James Drummond, C De Clercq, J C. Lambert, U Cortesi, K W. Jucks, C Boone, H Oelhaf, M Schneider, T Steck, K A. Walker, P Bernath, T Von Clarmann, R Hughes, C Vigouroux, J Kuttippurath, A Bracher, J Mcconnell, C Mclinden, H Kullmann, L Froidevaux, J Dodion, F Vanhellemont, J P. Burrows, J Kar, F Goutail, D G. Dufour, J M. Zawodny, F Nichitiu, J-P Pommereau, C Nowlan, D Fussen, J Zou, A R Klekociuk, G Forbes, H Bovensmann, R M Bevilacqua, C Haley, S Ceccherini, S D Mcleod, P Gerard, R Skelton, B Firanski, A E Bourassa, D A Degenstein, J Davies, T Christensen, J Granville, A Parrish, C Roth, J W. Waters, C Von Savigny, A Standberg, M Mchugh, A M. Thompson, E J Llewellyn, P Von Der Gathen, M B. Tully, J C. Witte, C Roth, B T. Marshall, K B. Strawbridge, E Kyrola, M P. Mccormick, D P J Swart, N D Lloyd, D W. Tarasick, S V. Petelina, L W. Thomason, A Jones, I S. Mcdermid
Validation Of Ozone Measurements From The Atmospheric Chemistry Experiment (Ace), Nicholas B. Jones, David W. Griffith, M Wolff, E Mahieu, G Bodeker, I Boyd, M De Maziere, P Demoulin, T Blumenstock, Y. Murayama, A. Kagawa, J Jin, Christopher Mcelroy, J Hannigan, M Coffey, M Hopfner, H W. Fischer, T Kerzenmacher, I Kramer, J Mellqvist, R Sussmann, K Strong, J R. Taylor, K Mizutani, Y Kasai, J Urban, D Murtagh, E Dupuy, V Catoire, S Chabrillat, P Baron, C Brogniez, G L. Manney, C Piccolo, C Randall, C Robert, C Senten, C Tetard, N J. Livesey, A Kleinbohl, S Godin-Beekmann, T Borsdorff, James Drummond, C De Clercq, J C. Lambert, U Cortesi, K W. Jucks, C Boone, H Oelhaf, M Schneider, T Steck, K A. Walker, P Bernath, T Von Clarmann, R Hughes, C Vigouroux, J Kuttippurath, A Bracher, J Mcconnell, C Mclinden, H Kullmann, L Froidevaux, J Dodion, F Vanhellemont, J P. Burrows, J Kar, F Goutail, D G. Dufour, J M. Zawodny, F Nichitiu, J-P Pommereau, C Nowlan, D Fussen, J Zou, A R Klekociuk, G Forbes, H Bovensmann, R M Bevilacqua, C Haley, S Ceccherini, S D Mcleod, P Gerard, R Skelton, B Firanski, A E Bourassa, D A Degenstein, J Davies, T Christensen, J Granville, A Parrish, C Roth, J W. Waters, C Von Savigny, A Standberg, M Mchugh, A M. Thompson, E J Llewellyn, P Von Der Gathen, M B. Tully, J C. Witte, C Roth, B T. Marshall, K B. Strawbridge, E Kyrola, M P. Mccormick, D P J Swart, N D Lloyd, D W. Tarasick, S V. Petelina, L W. Thomason, A Jones, I S. Mcdermid
Faculty of Science - Papers (Archive)
This paper presents extensive bias determination analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. Here we compare the latest ozone data products from ACE-FTS and ACE-MAESTRO with coincident observations from nearly 20 satellite-borne, airborne, balloonborne and ground-based instruments, by analysing volume mixing ratio profiles and partial column densities. The ACEFTS version 2.2 Ozone Update product reports more ozone than most correlative measurements from the upper troposphere to the lower mesosphere. At altitude levels from …
A Hybrid Approach To Estuary Modelling, O. Gould, J. Hinwood, Errol J. Mclean
A Hybrid Approach To Estuary Modelling, O. Gould, J. Hinwood, Errol J. Mclean
Faculty of Science - Papers (Archive)
A hybrid model incorporating process and system modelling characteristics has been developed and applied to the evolution of a theoretical estuary with a small lake basin, partially enclosed by a barrier with an entrance open to the sea. The one-dimensional model is capable of modelling changes in sedimentation both spatially and temporally and hence, tracks changes in crosssection dimensions along the estuary. The model structure is a series of linked modules to solve the hydrodynamics, the sediment transport equation and a distribution of the sediment to bed and bank. An evolution simulation was conducted for a generic coastal lagoon over …
Infrared Spectra Of Mass-Selected Mg+-H2 And Mg +-D2 Complexes, Viktoras Dryza, Berwyck L. Poad, Evan J. Bieske
Infrared Spectra Of Mass-Selected Mg+-H2 And Mg +-D2 Complexes, Viktoras Dryza, Berwyck L. Poad, Evan J. Bieske
Faculty of Science - Papers (Archive)
Rotationally resolved infrared spectra of Mg(+)-H(2) and Mg(+)-D(2) are recorded in the H-H (4025-4080 cm(-1)) and D-D (2895-2945 cm(-1)) stretch regions by monitoring Mg(+) photofragments. The nu(HH) and nu(DD) transitions of Mg(+)-H(2) and Mg(+)-D(2) are red-shifted by 106.2 +/- 1.5 and 76.0 +/- 0.1 cm(-1) respectively from the fundamental vibrational transitions of the free H(2) and D(2) molecules. The spectra are consistent with a T-shaped equilibrium structure in which the Mg(+) ion interacts with a slightly perturbed H(2) or D(2) molecule. From the spectroscopic constants, a vibrationally averaged intermolecular separation of 2.716 A (2.687 A) is deduced for the ground …
Spectroscopic Study Of The Benchmark Mn+-H2 Complex, Viktoras Dryza, Berwyck L. J Poad, Evan J. Bieske
Spectroscopic Study Of The Benchmark Mn+-H2 Complex, Viktoras Dryza, Berwyck L. J Poad, Evan J. Bieske
Faculty of Science - Papers (Archive)
We have recorded the rotationally resolved infrared spectrum of the weakly bound Mn+-H2 complex in the H-H stretch region (4022-4078 cm(-1)) by monitoring Mn+ photodissociation products. The band center of Mn+-H2, the H-H stretch transition, is shifted by -111.8 cm(-1) from the transition of the free H2 molecule. The spectroscopic data suggest that the Mn+-H2 complex consists of a slightly perturbed H2 molecule attached to the Mn+ ion in a T-shaped configuration with a vibrationally averaged intermolecular separation of 2.73 A. Together with the measured Mn+...H2 binding energy of 7.9 kJ/mol (Weis, P.; et al. J. Phys. Chem. A 1997, …
Sandy Creek Gorge; Humans, Palaeofloods And Landscape Evolution, John D. Jansen, Derek Fabel
Sandy Creek Gorge; Humans, Palaeofloods And Landscape Evolution, John D. Jansen, Derek Fabel
Faculty of Science - Papers (Archive)
No abstract provided.
Exploring Co Pollution Episodes Observed At Rishiri Island By Chemical Weather Simulations And Airs Satellite Measurements: Long-Range Transport Of Burning Plumes And Implications For Emissions Inventories, Hiroshi Tanimoto, Keiichi Sato, Tim Butler, Mark G. Lawrence, Jenny A. Fisher, M Kopacz, Robert M. Yantosca, Yugo Kanaya, Shungo Kato, Tomoaki Okuda, Shigeru Tanaka, Jiye Zeng
Exploring Co Pollution Episodes Observed At Rishiri Island By Chemical Weather Simulations And Airs Satellite Measurements: Long-Range Transport Of Burning Plumes And Implications For Emissions Inventories, Hiroshi Tanimoto, Keiichi Sato, Tim Butler, Mark G. Lawrence, Jenny A. Fisher, M Kopacz, Robert M. Yantosca, Yugo Kanaya, Shungo Kato, Tomoaki Okuda, Shigeru Tanaka, Jiye Zeng
Faculty of Science - Papers (Archive)
The summer of 2003 was an active forest fire season in Siberia. Several events of elevated carbon monoxide (CO) were observed at Rishiri Island in northern Japan during an intensive field campaign in September 2003. A simulation with a global chemistry-transport model is able to reproduce the general features of the baseline levels and variability in the observed CO, and a source attribution for CO in the model suggests that the contribution from North Asia dominated, accounting for approximately 50% on average, with contributions of 7% from North America and 8% from Europe and 30% from oxidation of hydrocarbons. With …
North Polar Frontal Clouds And Dust Storms On Mars During Spring And Summer, Huiqun Wang, Jenny A. Fisher
North Polar Frontal Clouds And Dust Storms On Mars During Spring And Summer, Huiqun Wang, Jenny A. Fisher
Faculty of Science - Papers (Archive)
The complete archive of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) Mars Daily Global Maps (MDGM) are used to study north polar clouds and dust storms that exhibit frontal structures during the spring and summer (Ls 0–180°). Results show that frontal events generally follow the edge of the polar cap during spring and mid/late summer with a gap in the distribution in early summer. The exact duration and timing of the gap vary from year to year. Twww.lw20.comen to twenty percent of spring and summer time frontal events exhibit complex morphologies. Distinct temperature signatures are associated with features observed …
Factors Governing Performance Of Continuous Fungal Reactor During Non-Sterile Operation - The Case Of A Membrane Bioreactor Treating Textile Wastewater, Faisal I. Hai, Kazuo Yamamoto, Fumiyuki Nakajima, Kensuke Fukushi
Factors Governing Performance Of Continuous Fungal Reactor During Non-Sterile Operation - The Case Of A Membrane Bioreactor Treating Textile Wastewater, Faisal I. Hai, Kazuo Yamamoto, Fumiyuki Nakajima, Kensuke Fukushi
Faculty of Science - Papers (Archive)
White-rot fungi, unlike bacteria in conventional activated sludge system, can degrade wide varieties of textile dyes. Their large scale implementation, however, has been impeded due to lack of appropriate reactor system that can sustain stable performance under non-sterile environment. In this study, contrary to virtually complete decoloration of an azo dye (Acid Orange II, 100 mg L−1) in pure culture batch test, a fungal membrane bioreactor (MBR) achieved 93% removal during long-term non-sterile operation at a hydraulic retention time (HRT) of 1 d. Through a set of novel observations made in MBR and parallel batch tests, the interrelated factors responsible …
Using Lidar To Assess The Effect Of Fire And Floods On Upland Peat Bogs, Waterfall Gully, Mount Lofty Ranges, South Australia, Javier Leon Patino, Solomon Buckman, Robert P. Bourman, Rowena Morris, Katherine C. Brownlie
Using Lidar To Assess The Effect Of Fire And Floods On Upland Peat Bogs, Waterfall Gully, Mount Lofty Ranges, South Australia, Javier Leon Patino, Solomon Buckman, Robert P. Bourman, Rowena Morris, Katherine C. Brownlie
Faculty of Science - Papers (Archive)
A flood exceeding the 100 year average recurrence interval in November 2005 led to the failure of an upland peat bog in Waterfall Gully. The area is prone to severe bushfire and flood events and the control dam at the base of First Falls was filled with sediment sourced from Wilson Bog. A resistant quartzite bar at Fourth Falls has formed a natural constriction point against which burnt logs and debris have collected following previous fire events forming a natural dam resulting in sediment/peat accumulation upstream. The failure of the bog was inevitable as the vegetative material in the log-jam …
The Soils Of Kiritimati (Christmas) Island, Kiribati, Central Pacific: New Information And Comparison With Previous Studies, Colin D. Woodroffe, Robert John Morrison
The Soils Of Kiritimati (Christmas) Island, Kiribati, Central Pacific: New Information And Comparison With Previous Studies, Colin D. Woodroffe, Robert John Morrison
Faculty of Science - Papers (Archive)
No abstract provided.
Martellia And Associated Middle Ordovician Brachiopods From The Katkoyeh Formation, East-Central Iran, Ian G. Percival, Anthony J. Wright, Robert S. Nicoll, Mir Alireza Hamedi
Martellia And Associated Middle Ordovician Brachiopods From The Katkoyeh Formation, East-Central Iran, Ian G. Percival, Anthony J. Wright, Robert S. Nicoll, Mir Alireza Hamedi
Faculty of Science - Papers (Archive)
The palaeontology and stratigraphy of the Ordovician if Iran has been the subject of considerable research over the past 15 years, revealing biogeographically significant faunas whose affinities are shared both with peri-Gondwanian terranes and continental blocks. Documentation of the composition and ages of these faunas, many of which are still poorly known, is critical to constraining palaeogeographic reconstructions of the time.
Evaporation And Carbon Dioxide Exchange By Sugar Cane Crops, G Bryant, Travis A. Naylor, Stephen R. Wilson, O T Denmead, David W. Griffith, B.C.T. Macdonald, I. White
Evaporation And Carbon Dioxide Exchange By Sugar Cane Crops, G Bryant, Travis A. Naylor, Stephen R. Wilson, O T Denmead, David W. Griffith, B.C.T. Macdonald, I. White
Faculty of Science - Papers (Archive)
RECENT developments in water and carbon trading and biofuel production highlight the need to document the water and carbon balances of Australia’s cropping systems including sugarcane. This paper presents the results of studies of evaporation and CO2 exchange throughout the growing seasons of two sugarcane crops, a 1st ratoon crop at Murwillumbah where burnt-cane was practised and a 5th ratoon crop at Mackay where trash blanketing was employed. At both locations, a micrometeorological eddy covariance technique was employed to measure water vapour and CO2 exchange between crop and atmosphere and manual and automatic chambers to measure CO2 emission from the …
Eoarchaean Crustal Growth In West Greenland (Itsaq Gneiss Complex) And In Northeastern China (Anshan Area): Review And Synthesis, Allen P. Nutman, Vickie C. Bennett, Clark R L Friend, Frances Jenner, Yusheng Wan, Dunyi Liu
Eoarchaean Crustal Growth In West Greenland (Itsaq Gneiss Complex) And In Northeastern China (Anshan Area): Review And Synthesis, Allen P. Nutman, Vickie C. Bennett, Clark R L Friend, Frances Jenner, Yusheng Wan, Dunyi Liu
Faculty of Science - Papers (Archive)
Eoarchaean crust in West Greenland (the Itsaq Gneiss Complex, 3870-3600 Ma) is >80% by volume orthogneisses derived from plutonic tonalite-trondhjemite-granodiorite (TTG) suites,3850, c. 3810 and c. 3710 Mahave some compositional similarities to modern island arc basalts (IAB), suggesting their origin by hydrous fluxing of a suprasubduction-zone upper mantle wedge. Most of the Eoarchaean tonalites match in composition high-silica, low-magnesian adakites, whose petrogenesis is dominated by partial melting of garnetiferous mafic rocks at high pressure. However, associated with the tonalites are volumetrically minor more magnesian quartz diorites, whose genesis probably involved melting of depleted mantle to which some slab-derived component had …
Detrital Zircon Sedimentary Provenance Ages For The Eoarchaean Isua Supracrustal Belt Southern West Greenland: Juxtaposition Of An Imbricated Ca. 3700 Ma Juvenile Arc Against An Older Complex With 3920-3760 Ma Components, Allen P. Nutman, Clark R L Friend, Shane Paxton
Detrital Zircon Sedimentary Provenance Ages For The Eoarchaean Isua Supracrustal Belt Southern West Greenland: Juxtaposition Of An Imbricated Ca. 3700 Ma Juvenile Arc Against An Older Complex With 3920-3760 Ma Components, Allen P. Nutman, Clark R L Friend, Shane Paxton
Faculty of Science - Papers (Archive)
The amphibolite facies Eoarchaean Isua supracrustal belt (northern part of the Nuuk region, southern West Greenland) is dominated by strongly deformed metabasalts, with chert, banded iron formation, felsic volcanic and volcano-sedimentary rocks and minor gabbro and sedimentary carbonates. It comprises a suture zone between a northern terrane formed at ca. 3700 Ma and a southern one formed at ca. 3800 Ma. At the junction between these two terranes is a strongly tectonised, thin unit of metachert, BIF and carbonate-bearing rocks with minor detrital components, named the dividing sedimentary unit. Away from the belt, the northern terrane is dominated by ca. …
The Whole Rock Sm-Nd 'Age' For The 2825 Ma Ikkattoq Gneisses (Greenland) Is 800 Ma Too Young: Insights Into Archaean Ttg Petrogenesis, Clark R L Friend, Allen Phillip Nutman, Halfdan Baadsgaard, M John M Duke
The Whole Rock Sm-Nd 'Age' For The 2825 Ma Ikkattoq Gneisses (Greenland) Is 800 Ma Too Young: Insights Into Archaean Ttg Petrogenesis, Clark R L Friend, Allen Phillip Nutman, Halfdan Baadsgaard, M John M Duke
Faculty of Science - Papers (Archive)
The Ikkattoq gneisses of the Archaean gneiss complex in the Nuuk region, southern West Greenland, are the orthogneiss component within the amphibolite facies Tre Brodre terrane. They have mostly granodioritic compositions, with a small amount of quartz diorite. Sm-Nd isotopic data for a quartz diorite and five granodiorite Ikkattoq gneiss samples from within 5 km of the Ikkattoq (fjord) type locality yielded a regression with a slope equivalent to 2005 +/- 52 Ma (MSWD = 0.72). Regardless of the low MSWD, this cannot be the true age of the Ikkattoq gneisses, because all Ikkattoq gneisses yield U-Pb zircon dates of …
Tectonic Evolution Of The Ordovician Macquarie Arc, Central New South Wales: Arguments For Subduction Polarity And Anticlockwise Rotation, Christopher L. Fergusson
Tectonic Evolution Of The Ordovician Macquarie Arc, Central New South Wales: Arguments For Subduction Polarity And Anticlockwise Rotation, Christopher L. Fergusson
Faculty of Science - Papers (Archive)
The Ordovician Macquarie Arc is most widely exposed in the Lachlan Fold Belt of central New South Wales. Complex relationships between the arc and the Ordovician turbidite mega-fan are partly explained by anticlockwise rotation of the arc during the Ordovician. Thus, initially two lobes of the mega-fan formed to the north and south of the east-west trending arc, using present-day coordinates. The arc consists of the western Goonumbla-Trangie Volcanic Belt, replacing the inappropriate term Junee-Narromine Volcanic Belt, and an eastern composite of the Molong, Rockley-Gulgong and Kiandra Volcanic Belts. These two major segments of the arc are separated by Ordovician …
In Situ U-Pb, O And Hf Isotopic Compositions Of Zircon And Olivine From Eoarchaean Rocks, West Greenland: New Insights To Making Old Crust, Joe Hiess, Vickie C. Bennett, Allen P. Nutman, Ian S. Williams
In Situ U-Pb, O And Hf Isotopic Compositions Of Zircon And Olivine From Eoarchaean Rocks, West Greenland: New Insights To Making Old Crust, Joe Hiess, Vickie C. Bennett, Allen P. Nutman, Ian S. Williams
Faculty of Science - Papers (Archive)
The sources and petrogenetic processes that generated some of the Earth's oldest continental crust have been more tightly constrained via an integrated, in situ (U-Pb, O and Hf) isotopic approach. The minerals analysed were representative zircon from four Eoarchaean TTG tonalites and two felsic volcanic rocks, and olivine from one harzburgite/dunite of the Itsaq Gneiss Complex (IGC), southern West Greenland. The samples were carefully chosen from localities with least migmatisation, metasomatism and strain. Zircon was thoroughly characterized prior to analysis using cathodoluminescence, scanning electron, reflected and transmitted light imaging. The zircon from all but one sample showed only minor post-magmatic …
Data Report: Clast Counts And Petrography Of Gravels From Site C0007, Iodp Expedition 316, Nankai Trough, Christopher L. Fergusson
Data Report: Clast Counts And Petrography Of Gravels From Site C0007, Iodp Expedition 316, Nankai Trough, Christopher L. Fergusson
Faculty of Science - Papers (Archive)
Gravel beds drilled during Integrated Ocean Drilling Program Expedition 316 at Site C0007 in the eastern Nankai Trough, ~100km offshore from the Kii Peninsula of Honshu, southwest Japan, have been investigated using 26 samples from two horizons (Cores 316-C0007C/C-17H and 316-C0007D-12R). The gravel from Core 316-C0007c-17H is from a 1.7m thick layer, whereas the gravel from Core 316-C0007D-12R is from a layer 4.55m thick. The upper parts of both layers are normally graded. The gravel is clast-supported, polymictic, of granule to pebble size, moderately to poorly sorted, and with subrounded to angular fragments. Clast types are similar from both cores …
Absolute Calibration Of The Intramolecular Site Preference Of 15n Fractionation In Tropospheric N2o By Ft-Ir Spectroscopy, David W. T Griffith, Stephen D. Parkes, Vanessa Haverd, Clare Paton-Walsh, Stephen R. Wilson
Absolute Calibration Of The Intramolecular Site Preference Of 15n Fractionation In Tropospheric N2o By Ft-Ir Spectroscopy, David W. T Griffith, Stephen D. Parkes, Vanessa Haverd, Clare Paton-Walsh, Stephen R. Wilson
Faculty of Science - Papers (Archive)
Nitrous oxide (N2O) plays important roles in atmospheric chemistry both as a greenhouse gas and in stratospheric ozone depletion. Isotopic measurements of N2O have provided an invaluable insight into understanding its atmospheric sources and sinks. The preference for 15N fractionation between the central and terminal positions (the “site preference”) is particularly valuable because it depends principally on the processes involved in N2O production or consumption, rather than the 15N content of the substrate from which it is formed. Despite the value of measurements of the site preference, there is no internationally recognized standard reference material of accurately known and accepted …
Darriwilian (Middle Ordovician) Conodonts From Thompson Creek, Nelson Province, New Zealand, Yong Yi Zhen, Ian G. Percival, Roger A. Cooper, John E. Simes, Anthony J. Wright
Darriwilian (Middle Ordovician) Conodonts From Thompson Creek, Nelson Province, New Zealand, Yong Yi Zhen, Ian G. Percival, Roger A. Cooper, John E. Simes, Anthony J. Wright
Faculty of Science - Papers (Archive)
A well preserved Middle Ordovician conodont fauna of 24 species has been recovered from seven samples of a small limestone lens exposed in Thompson Creek, northwest of Nelson, on the South Island of New Zealand. The presence of Histiodella holodentata, Baltoniodus? sp., Paroistodus originalis, P. horridus, Periodon macrodentatus, Protopanderodus sp. cf. P. varicostatus, Costiconus ethingtoni and Venoistodus balticus in the fauna indicates a Darriwilian (late Da2 to mid Da3) age. The occurrence of Ansella jemtlandica, Baltoniodus? sp., Periodon macrodentatus, Spinodus sp., Spinodus? sp. and Histiodella holodentata suggests a relatively deeper water (outer shelf to slope) setting, comparable with contemporaneous faunas, …
Late Neoproterozoic Passive Margin Of East Gondwana: Geochemical Constraints From The Anakie Inlier, Central Queensland, Australia, Christopher L. Fergusson, R Offler, T Green
Late Neoproterozoic Passive Margin Of East Gondwana: Geochemical Constraints From The Anakie Inlier, Central Queensland, Australia, Christopher L. Fergusson, R Offler, T Green
Faculty of Science - Papers (Archive)
Development of the East Gondwana passive margin and when it occurred are constrained by the composition of low grade mafic schists and U-Pb ages of detrital zircons in psammitic schists from the Bathampton Metamorphics in the Anakie Inlier of central Queensland. These rocks show considerable variation in light lithophile elements due to post-magmatic processes. They have flat heavy rare earth element patterns, low-TiO2 (<2 wt%) contents and their immobile element Ti, V, Y, La, Nb, Th and Zr values, indicate that they have an NMORB- like magmatic affinity. However, they differ from N-MORB in that they show light rare earth depleted patterns and lower incompatible trace element contents. Their relative low abundance and association with metasediments suggest they formed in a magma-poor rifted margin setting. They are associated with psammitic rocks with detrital zircon ages indicating probable deposition in the late Neoproterozoic at ca 600 Ma. A magma-poor rifted margin in northeastern Australia differs from the volcanic passive setting that occurred in southeastern Australia at this time. These findings support development of the East Gondwana margin at 600 Ma that may have been related to rifting of a microcontinent off East Gondwana well after the breakup of Rodinia at ca 750 Ma.
Middle Ordovician (Darriwilian) Brachiopods And Trilobites From Thompson Creek, Northwest Nelson, New Zealand, Ian G. Percival, Anthony J. Wright, Roger A. Cooper, John E. Simes, Yong Yi Zhen
Middle Ordovician (Darriwilian) Brachiopods And Trilobites From Thompson Creek, Northwest Nelson, New Zealand, Ian G. Percival, Anthony J. Wright, Roger A. Cooper, John E. Simes, Yong Yi Zhen
Faculty of Science - Papers (Archive)
A well preserved Middle Ordovician shelly fauna, represented by twelve species of lingulate brachiopods and one trilobite genus, was recovered from an allochthonous limestone lens exposed in Thompson Creek, northwest of Nelson, on the South Island of New Zealand. The stratigraphic setting is unclear as the limestone is situated in the Takaka Terrane adjacent to the Anatoki Fault, separating this terrane from the Buller Terrane. The original depositional environment of the limestone is interpreted as relatively deep water (outer shelf to upper slope). Lingulate brachiopods described include the new species Hyperobolus? thompsonensis sp. nov., Cyrtonotreta robusta sp. nov., Scaphelasma paturauensis …
The Asaphid Trilobite Ogygites Collingwoodensis Reed, 1926 From The Late Ordovician Of New Zealand, Anthony J. Wright
The Asaphid Trilobite Ogygites Collingwoodensis Reed, 1926 From The Late Ordovician Of New Zealand, Anthony J. Wright
Faculty of Science - Papers (Archive)
The New Zealand asaphid trilobite Ogygites collingwoodensis is redescribed on the basis of the type material and new collections, and its assignment to Basiliella is confirmed. The species occurs with the trinucleid trilobite Incaia bishopi and graptolites indicative of the Nemagraptus gracilis zone (early Late Ordovician, early Sandbian/Gisbornian), mostly as disarticulated material in intensely bioturbated siltstone of the Douglas Formation. Comparison with coeval faunas is limited due to the low diversity of this fauna, but B. collingwoodensis shows some limited similarity to contemporaneous eastern Australian faunas, whereas Incaia also occurs in South America and South China.
Development And Application Of A System For The Analysis Of Atmospheric, Water And Sediment Nitrogen And Carbon, Ann Stavert, Stephen R. Wilson, Dianne F. Jolley
Development And Application Of A System For The Analysis Of Atmospheric, Water And Sediment Nitrogen And Carbon, Ann Stavert, Stephen R. Wilson, Dianne F. Jolley
Faculty of Science - Papers (Archive)
Eutrophication and climate change, key environmental concerns, are both linked to the carbon and nitrogen cycles hence the improved understanding of these cycles is essential. Currently, there is no system that simultaneously measures the fluxes of the three key gas phase products of nitrogen and carbon cycling (CO2, CH4 and N2O) in submerged ecosystems with hourly time resolution. A “Lake-in-a-box” (mesocosm) was developed in the laboratory which allowed the monitoring of key components of the carbon and nitrogen cycles within the air, water and sediments. The approach is automated, simple and time efficient and novel in its ability to examine …
Climate Change In The Dead Heart Of Australia, Joshua Larsen, Gerald C. Nanson, Timothy J. Cohen, Brian G. Jones, John D. Jansen, Jan-Hendrik May
Climate Change In The Dead Heart Of Australia, Joshua Larsen, Gerald C. Nanson, Timothy J. Cohen, Brian G. Jones, John D. Jansen, Jan-Hendrik May
Faculty of Science - Papers (Archive)
Despite the absence of large-scale glaciation, the Australian continent has experienced substantial environmental change throughout the Quaternary period. This is especially pronounced in central Australia, where one seventh of the continent is drained internally to the depocentre, and lowest point in Australia, Lake Eyre (Figure 1). Research has shown that at one time, large sandy braided and meandering rivers carried water through dunefields to a large freshwater lake system. Today, the rivers are hostage to the dunefield, and floodwaters might only reach Lake Eyre once every ten years or so. In order to understand the development of this arid desert …
Reconstructing Annual Inflows To The Headwater Catchments Of The Murray River, Australia, Using The Pacific Decadal Oscillation, Hamish A. Mcgowan, Samuel K. Marx, John Denholm, Joshua Soderholm, Balz S. Kamber
Reconstructing Annual Inflows To The Headwater Catchments Of The Murray River, Australia, Using The Pacific Decadal Oscillation, Hamish A. Mcgowan, Samuel K. Marx, John Denholm, Joshua Soderholm, Balz S. Kamber
Faculty of Science - Papers (Archive)
The Pacific Decadal Oscillation (PDO) is a major forcing of inter-decadal to quasi-centennial variability of the hydroclimatology of the Pacific Basin. Its effects are most pronounced in the extra-tropical regions, while it modulates the El Nino Southern Oscillation (ENSO), the largest forcing of global inter-annual climate variability. PalaeoPDO indices are now available for at least the past 500 years. Here we show that the >500 year PDO index of Shen et al. (2006) is highly correlated with inflows to the headwaters of Australia's longest river system, the Murray-Darling. We then use the PDO to reconstruct annual inflows to the Murray …