Search Results - "Halpin, J. A."

PetroChron Antarctica: A Geological Database for Interdisciplinary Use by G. Sanchez, J. A. Halpin, M. Gard, D. Hasterok, T. Stål, T. Raimondo, S. Peters, A. Burton‐Johnson

“…Abstract We present PetroChron Antarctica, a new relational database including petrological, geochemical and geochronological data sets along with computed…”
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Naturaliste Plateau: constraints on the timing and evolution of the Kerguelen Large Igneous Province and its role in Gondwana breakup by Direen, N. G., Cohen, B. E., Maas, R., Frey, F. A., Whittaker, J. M., Coffin, M. F., Meffre, S., Halpin, J. A., Crawford, A. J.

“…Volcanism associated with the Kerguelen Large Igneous Province is found scattered in southwestern Australia (the ca 136 to ca 130 Ma Bunbury Basalts, and ca…”
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Spatially-focussed melt formation in aluminous metapelites from Broken Hill, Australia by WHITE, R. W., POWELL, R., HALPIN, J. A.

“…Large garnet poikiloblasts hosted by leucosome in metapelitic gneiss from Broken Hill reflect complex mineral–melt relationships. The spatial relationship…”
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The Proterozoic P-T-t Evolution of the Kemp Land Coast, East Antarctica; Constraints from Si-saturated and Si-undersaturated Metapelites by Halpin, J. A., White, R. W., Clarke, G. L., Kelsey, D. E.

“…Integrated metamorphic and geochronological data place new constraints on the metamorphic evolution of a Neoproterozoic orogen in east Antarctica…”
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In-situ U–Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica by Halpin, J. A., Gerakiteys, C. L., Clarke, G. L., Belousova, E. A., Griffin, W. L.

“…In-situ zircon U-Pb and Hf isotopic analysis via laser ablation microprobe-inductively coupled plasma mass spectrometer (LAM-ICPMS) of samples from Kemp and…”
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A new heat flux model for the Antarctic Peninsula incorporating spatially variable upper crustal radiogenic heat production by Burton‐Johnson, A., Halpin, J. A., Whittaker, J. M., Graham, F. S., Watson, S. J.

“…A new method for modeling heat flux shows that the upper crust contributes up to 70% of the Antarctic Peninsula's subglacial heat flux and that heat flux…”
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Decoding near-concordant U–Pb zircon ages spanning several hundred million years: recrystallisation, metamictisation or diffusion? by Halpin, J. A., Daczko, N. R., Milan, L. A., Clarke, G. L.

“…In situ isotopic (U–Pb, Lu–Hf) and trace element analyses of zircon populations in six samples of the intrusive Mawson Charnockite, east Antarctica, emphasise…”
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Timing and style of high-temperature metamorphism across the Western Gawler Craton during the Paleo- to Mesoproterozoic by Reid, A. J., Halpin, J. A., Dutch, R. A.

“…Combined in situ monazite dating, mineral equilibria modelling and zircon U-Pb detrital zircon analysis provide insight into the pressure-temperature-time…”
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Thermal gradient and timing of high-T-low-P metamorphism in the Wongwibinda Metamorphic Complex, southern New England Orogen, Australia by CRAVEN, S. J., DACZKO, N. R., HALPIN, J. A.

“…The Wongwibinda Metamorphic Complex (WMC) is a high‐temperature, low‐pressure (HTLP) belt in the southern New England Orogen. It is characterized by a high…”
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Evidence for melt migration enhancing recrystallization of metastable assemblages in mafic lower crust, Fiordland, New Zealand by DACZKO, N. R., HALPIN, J. A.

“…A major arc batholith, the Western Fiordland Orthogneiss (WFO) in Fiordland, New Zealand, exhibits irregular, spatially restricted centimetre‐scale…”
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Depositional age and correlation of the Oonah Formation: refining the timing of Neoproterozoic basin formation in Tasmania by Mulder, J. A., Berry, R. F., Halpin, J. A., Meffre, S., Everard, J. L.

“…The Proterozoic Oonah Formation comprises a thick sequence of turbidites and mafic rocks that is widely exposed in western and northern Tasmania. The regional…”
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Eastern Indian Ocean microcontinent formation driven by plate motion changes by Whittaker, J.M., Williams, S.E., Halpin, J.A., Wild, T.J., Stilwell, J.D., Jourdan, F., Daczko, N.R.

“…The roles of plate tectonic or mantle dynamic forces in rupturing continental lithosphere remain controversial. Particularly enigmatic is the rifting of…”
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Exhumation of the Dayman dome metamorphic core complex, eastern Papua New Guinea by DACZKO, N. R., CAFFI, P., HALPIN, J. A., MANN, P.

“…The ∼750 km2 Dayman dome of the Late Cretaceous Suckling‐Dayman massif, eastern Papua New Guinea, is a domed landform that rises to an elevation of 2850 m. The…”
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Metastable persistence of pelitic metamorphic assemblages at the root of a Cretaceous magmatic arc - Fiordland, New Zealand by DACZKO, N. R., MILAN, L. A., HALPIN, J. A.

“…Four aluminosilicate‐bearing, amphibolite facies pelitic schists sampled from the root of the long‐lived eastern Gondwana continental magmatic arc now exposed…”
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Contrasting P–T–t paths for Neoproterozoic metamorphism in MacRobertson and Kemp Lands, east Antarctica by HALPIN, J. A., CLARKE, G. L., WHITE, R. W., KELSEY, D. E.

“…Mineral equilibria modelling and electron microprobe chemical dating of monazite in granulite facies metapelitic assemblages from the MacRobertson Land…”
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Spatial and Temporal Contributions to the Structure of Spatial Memory by McNamara, Timothy P, Halpin, John A, Hardy, James K

“…Three experiments investigated the effects of spatial and temporal contiguity in item recognition, location judgment, and distance estimation tasks. Ss learned…”
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The representation and integration in memory of spatial and nonspatial information by MCNAMARA, T. P, HALPIN, J. A, HARDY, J. K

“…A series of experiments investigated whether people could integrate nonspatial information about an object with their knowledge of the object's location in…”
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Global whole-rock geochemical database compilation by Gard, Matthew, Hasterok, Derrick, Halpin, Jacqueline A

“…Collation and dissemination of geochemical data are critical to promote rapid, creative, and accurate research and place new results in an appropriate global…”
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Provenance of rifted continental crust at the nexus of East Gondwana breakup by Halpin, J.A., Daczko, N.R., Direen, N.G., Mulder, J.A., Murphy, R.C., Ishihara, T.

“…The Bruce Rise, a prominent bathymetric feature offshore the Bunger Hills (East Antarctica), has basement of unknown crustal affinity and age. In East…”
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Glaciological history and structural evolution of the Shackleton Ice Shelf system, East Antarctica, over the past 60 years by Thompson, Sarah S, Kulessa, Bernd, Luckman, Adrian, Halpin, Jacqueline A, Greenbaum, Jamin S, Pelle, Tyler, Habbal, Feras, Guo, Jingxue, Jong, Lenneke M, Roberts, Jason L, Sun, Bo, Blankenship, Donald D

“…The discovery of Antarctica's deepest subglacial trough beneath the Denman Glacier, combined with high rates of basal melt at the grounding line, has caused…”
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