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Paleoclimate Data-Model Comparison And The Role Of Climate Forcings Over The Past 1500 Years, Steven J. Phipps, Helen V. Mcgregor, Joelle Gergis, Ailie J. E Gallant, Raphael Neukom, Samantha Stevenson, Duncan Ackerley, Josephine R. Brown, Matt J. Fischer, Tas D. Van Ommen
Paleoclimate Data-Model Comparison And The Role Of Climate Forcings Over The Past 1500 Years, Steven J. Phipps, Helen V. Mcgregor, Joelle Gergis, Ailie J. E Gallant, Raphael Neukom, Samantha Stevenson, Duncan Ackerley, Josephine R. Brown, Matt J. Fischer, Tas D. Van Ommen
Faculty of Science, Medicine and Health - Papers: part A
The past 1500 years provide a valuable opportunity to study the response of the climate system to external forcings. However, the integration of paleoclimate proxies with climate modeling is critical to improving the understanding of climate dynamics. In this paper, a climate system model and proxy records are therefore used to study the role of natural and anthropogenic forcings in driving the global climate. The inverse and forward approaches to paleoclimate data–model comparison are applied, and sources of uncertainty are identified and discussed. In the first of two case studies, the climate model simulations are compared with multiproxy temperature reconstructions. …
Morphology And Taxonomy Of The Late Silurian Rhynchonellide Brachiopod Notoconchidium, Anthony J. Wright, Michael J. Garratt
Morphology And Taxonomy Of The Late Silurian Rhynchonellide Brachiopod Notoconchidium, Anthony J. Wright, Michael J. Garratt
Faculty of Science, Medicine and Health - Papers: part A
The distinctive brachiopod genus Notoconchidium is known from late Silurian, mostly sandy, shallow marine strata in Tasmania, Victoria and New Zealand. Material from the Zeehan and Wynyard areas (Tasmania), the Whittlesea-Wallan and Heathcote areas (Victoria), and the Wangapeka River area (New Zealand), permits further insight into detailed aspects of morphology and relationships between the previously named species N. tasmaniense, N. florencense and N. thomasi. We conclude that N. thomasi is a junior synonym of N. tasmaniense, but N. florencense is retained as a separate species. New species described are N. talenti and N. argentium. The diamond-shaped septalium of Notoconchidium exhibits, …
Coral Microatoll Reconstructions Of El Niño-Southern Oscillation: New Windows On Seasonal And Interannual Processes, Helen V. Mcgregor, C D. Woodroffe, M Fischer, M K. Gagan, David Fink
Coral Microatoll Reconstructions Of El Niño-Southern Oscillation: New Windows On Seasonal And Interannual Processes, Helen V. Mcgregor, C D. Woodroffe, M Fischer, M K. Gagan, David Fink
Faculty of Science, Medicine and Health - Papers: part A
Porites coral microatolls show δ18O signal reproducibility and fidelity comparable to more conventional coral growth forms. Longer-lived and fossil microatolls, which grow in suitably flushed environments, contain δ18O signals that can significantly extend instrumental records of the El Niño-Southern Oscillation. Porites corals are the most commonly used genus for reconstructing El Niño- Southern Oscillation (ENSO). This hermatypic coral is found in all tropical reef environments (Veron 2000) with a variety of growth forms. Climate reconstructions of a century or more have been obtained from the most common, dome-shaped Porites growth form, whereby the colonies, beginning from the substrate, grow outward …
Notes On The Early Devonian Brachiopod Leptaena Ouralensis De Verneuil, 1845, Anthony J. Wright
Notes On The Early Devonian Brachiopod Leptaena Ouralensis De Verneuil, 1845, Anthony J. Wright
Faculty of Science, Medicine and Health - Papers: part A
On the basis of the type material, an attempt is made to review the widely reported brachiopod Leptaena ouralensis de Verneuil, 1845, much more commonly known as Megastrophia uralensis (de Verneuil, 1845). Assignment of this species to Megastrophia is still tentative, and many reports of the species, especially those based on crack-out material, must remain doubtful. The species has an established narrow geographic and stratigraphic range to the upper Emsian (upper Lower Devonian) of mostly Siberia, Mongolia and China.
The Itsaq Gneiss Complex Of Greenland: Episodic 3900 To 3660 Ma Juvenile Crust Formation And Recycling In The 3660 To 3600 Ma Isukasian Orogeny, Allen P. Nutman, Vickie C. Bennett, Clark R. L Friend, Hiroshi Hidaka, Keewook Yi, Seung Ryeol Lee, Tomoyuki Kamiichi
The Itsaq Gneiss Complex Of Greenland: Episodic 3900 To 3660 Ma Juvenile Crust Formation And Recycling In The 3660 To 3600 Ma Isukasian Orogeny, Allen P. Nutman, Vickie C. Bennett, Clark R. L Friend, Hiroshi Hidaka, Keewook Yi, Seung Ryeol Lee, Tomoyuki Kamiichi
Faculty of Science, Medicine and Health - Papers: part A
From the 3000 km2 Eoarchean Itsaq Gneiss Complex (IGC) of Greenland, zircon U-Pb dating of numerous meta-granitoid and orthogneiss samples is integrated with geologic observations, whole rock geochemistry and a strategic subset of zircon Hf and whole rock Nd isotopic measurements. This shows that there are multiple episodes of TTG suite formation from ∼3890 to 3660 Ma, characterized by zircon initial εHf≈0 and whole rock initial εNd of > +2. These rocks mostly have geochemical signatures of partial melting of eclogitized mafic sources, with a subset of high magnesian, low silica rocks indicating fusion by fluid fluxing of upper mantle sources. …
The Emergence Of The Eoarchaean Proto-Arc: Evolution Of A C. 3700 Ma Convergent Plate Boundary At Isua, Southern West Greenland, Allen Phillip Nutman, Vickie C. Bennett, Clark R L Friend
The Emergence Of The Eoarchaean Proto-Arc: Evolution Of A C. 3700 Ma Convergent Plate Boundary At Isua, Southern West Greenland, Allen Phillip Nutman, Vickie C. Bennett, Clark R L Friend
Faculty of Science, Medicine and Health - Papers: part A
Eoarchaean juvenile crust formed as ‘proto-arcs’. The northern side of the Isua supracrustal belt is an archetypal proto-arc, with ≥3720 Ma boninites, c. 3720 Ma basalts and gabbros, 3720–3710 Ma andesites, diorites and mafic tonalites, 3710–3700 Ma intermediate-felsic volcanic and sedimentary rocks and 3700–3690 Ma chemical sedimentary rocks. On its northern side there is an extensive body of 3700–3690 Ma tonalite. During its evolution, the c. 3700 Ma Isua volcanic–sedimentary assemblage was partitioned into tectonic slices, with intercalation of mantle dunites with pillow basalts, prior to intrusion of c. 3710 Ma quartz diorites. Partitioning also occurred at 3690–3660 Ma, when …
Middle Carboniferous-Early Triassic Eclogite-Blueschist Blocks Within A Serpentinite Mélange At Port Macquarie, Eastern Australia: Implications For The Evolution Of Gondwana's Eastern Margin, Allen P. Nutman, Solomon Buckman, Hiroshi Hidaka, Tomoyuki Kamiichi, Elena Belousova, Jonathan Aitchison
Middle Carboniferous-Early Triassic Eclogite-Blueschist Blocks Within A Serpentinite Mélange At Port Macquarie, Eastern Australia: Implications For The Evolution Of Gondwana's Eastern Margin, Allen P. Nutman, Solomon Buckman, Hiroshi Hidaka, Tomoyuki Kamiichi, Elena Belousova, Jonathan Aitchison
Faculty of Science, Medicine and Health - Papers: part A
The New England Orogen of easternmost Australia is dominated by suites of Palaeozoic to earliest Mesozoic rocks that formed in supra-subduction zone settings at Gondwana's eastern margin. On the northern New South Wales coast at Rocky Beach, Port Macquarie, a serpentinite mélange carries rare tectonic blocks of low-grade, high-pressure, metamorphic rocks derived from sedimentary and igneous protoliths. Dominant assemblages are glaucophane. +. phengite. ±. garnet. ±. lawsonite. ±. calcite. ±. albite blueschists and lawsonite-bearing retrogressed garnet. +. omphacite eclogites. In some blocks with sedimentary protoliths, eclogite forms folded layers within the blueschists, which is interpreted as Mn/(Mn. +. Fe) compositional …
Determining The Impact Of The Holocene Highstand At The Coastal-Fluvial Interface, Shoalhaven River, South-Eastern Australia, Stephanie J. Kermode, Martin R. Gibling, Brian G. Jones, Tim J. Cohen, David M. Price, James S. Daley
Determining The Impact Of The Holocene Highstand At The Coastal-Fluvial Interface, Shoalhaven River, South-Eastern Australia, Stephanie J. Kermode, Martin R. Gibling, Brian G. Jones, Tim J. Cohen, David M. Price, James S. Daley
Faculty of Science, Medicine and Health - Papers: part A
With enhanced rates of sea-level rise predicted for the next century, the upstream extent of sea-level influence across coastal plains is a topic of public importance. Australian coastal rivers provide a testing ground for exploring this issue because the area is tectonically stable, was not glaciated, and experienced a Holocene highstand between 7.4 and 2ka of up to 1.5m above Australian Height Datum (AHD). In the Shoalhaven River of New South Wales, investigation of a confined bedrock reach at Wogamia, 32km inland, has identified a unit of dark, cohesive silt and sand with marine diatoms, shell fragments, and enhanced pyrite …
Polycyclic Evolution Of Camboriú Complex Migmatites, Santa Catarina, Southern Brazil: Integrated Hf Isotopic And U-Pb Age Zircon Evidence Of Episodic Reworking Of A Mesoarchean Juvenile Crust, Miguel Angelo Stipp Basei, Mario Da Costa Campos Neto, Angela Pacheco Lopes, Allen Phillip Nutman, Dunyi Liu, Kei Sato
Polycyclic Evolution Of Camboriú Complex Migmatites, Santa Catarina, Southern Brazil: Integrated Hf Isotopic And U-Pb Age Zircon Evidence Of Episodic Reworking Of A Mesoarchean Juvenile Crust, Miguel Angelo Stipp Basei, Mario Da Costa Campos Neto, Angela Pacheco Lopes, Allen Phillip Nutman, Dunyi Liu, Kei Sato
Faculty of Science, Medicine and Health - Papers: part A
The Camboriú Complex is the only gneissic-migmatitic inlier within the Neoproterozoic Brusque Group supracrustal rocks, in the northernmost part of the Dom Feliciano Belt, southern Brazil. It comprises the Morro do Boi migmatites and the diatexitic Ponta do Cabeço Granite. Zircon U-Pb dating of migmatites and associated granitic neosomes shows that crustal evolution started in the Paleo- Mesoarchean (3.3-3.0 Ga), continued with events through the Neoarchean and Paleoproterozoic and ended in the Neoproterozoic (0.64-0.61 Ga). Integration of zircon Hf isotopic data and U-Pb ages indicate that juvenile crustal accretion was restricted to the Archean and that afterwards intracrustal reworking predominated. …
Removal Of Trace Organic Contaminants By Nitrifying Activated Sludge And Whole-Cell And Crude Enzyme Extract Of Trametes Versicolor, Shufan Yang, Faisal I. Hai, Long D. Nghiem, Felicity Roddick, William E. Price
Removal Of Trace Organic Contaminants By Nitrifying Activated Sludge And Whole-Cell And Crude Enzyme Extract Of Trametes Versicolor, Shufan Yang, Faisal I. Hai, Long D. Nghiem, Felicity Roddick, William E. Price
Faculty of Science, Medicine and Health - Papers: part A
The resistance of certain anthropogenic trace organic contaminants (TrOCs) to conventional wastewater treatment and their potential adverse effects on human and ecological health raise significant concerns and have prompted research on their bioremediation by white-rot fungi. This study compared the removal efficiencies of four widespread TrOCs: carbamazepine (CBZ), sulfamethoxazole (SMX), bisphenol A (BPA) and diclofenac (DCF), by nitrifying activated sludge as well as whole-cell and extracellular enzyme (laccase) extract of the white-rot fungus Trametes versicolor. Fungal whole-cell culture removed only BPA and DCF but with high efficiencies (>90%) while the mixed nitrifying culture removed all compounds, although by levels …
Factors Driving Mercury Variability In The Arctic Atmosphere And Ocean Over The Past 30 Years, Jenny A. Fisher, Daniel J. Jacob, Anne L. Soerensen, Helen M. Amos, Elizabeth S. Corbitt, David G. Streets, Qiaoqiao Wang, Robert M. Yantosca, Elsie M. Sunderland
Factors Driving Mercury Variability In The Arctic Atmosphere And Ocean Over The Past 30 Years, Jenny A. Fisher, Daniel J. Jacob, Anne L. Soerensen, Helen M. Amos, Elizabeth S. Corbitt, David G. Streets, Qiaoqiao Wang, Robert M. Yantosca, Elsie M. Sunderland
Faculty of Science, Medicine and Health - Papers: part A
[1] Long-term observations at Arctic sites (Alert and Zeppelin) show large interannual variability (IAV) in atmospheric mercury (Hg), implying a strong sensitivity of Hg to environmental factors and potentially to climate change. We use the GEOS-Chem global biogeochemical Hg model to interpret these observations and identify the principal drivers of spring and summer IAV in the Arctic atmosphere and surface ocean from 1979–2008. The model has moderate skill in simulating the observed atmospheric IAV at the two sites (r ~ 0.4) and successfully reproduces a long-term shift at Alert in the timing of the spring minimum from May to April …