Search Results - "Jackson, G M"

Seawater cycled throughout Earth’s mantle in partially serpentinized lithosphere by Kendrick, M. A., Hémond, C., Kamenetsky, V. S., Danyushevsky, L., Devey, C. W., Rodemann, T., Jackson, M. G., Perfit, M. R.

“…The extent to which water and halogens in Earth’s mantle have primordial origins, or are dominated by seawater-derived components introduced by subduction is…”
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Primordial helium entrained by the hottest mantle plumes by Jackson, M. G., Konter, J. G., Becker, T.W.

“…Analysis of helium isotope ratios in volcanic hotspot lavas suggests that hotter, more buoyant plumes upwelling from the deep mantle entrain high- 3 He/ 4 He…”
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Connections between the bulk composition, geodynamics and habitability of Earth by Jellinek, A. M., Jackson, M. G.

“…Earth's composition differs from its meteoritic precursors. An evaluation of the evidence suggests that some material could have been lost to space during…”
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Spatial Characteristics of Recycled and Primordial Reservoirs in the Deep Mantle by M. G. Jackson, T. W. Becker, B. Steinberger

“…Abstract The spatial distribution of the geochemical domains hosting recycled crust and primordial (high‐3He/4He) reservoirs, and how they are linked to mantle…”
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Helium and lead isotopes reveal the geochemical geometry of the Samoan plume by Jackson, M. G., Hart, S. R., Konter, J. G., Kurz, M. D., Blusztajn, J., Farley, K. A.

“…Analysis of the lead and helium isotopes in Samoan hotspot lavas reveals four low- 3 He/ 4 He types of lava that do not mix much with each other but do mix…”
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Carbonatite Versus Silicate Melt Metasomatism Impacts Grain Scale 87Sr/86Sr and 143Nd/144Nd Heterogeneity in Polynesian Mantle Peridotite Xenoliths by Benjamin L. Byerly, M. G. Jackson, M. Bizimis

“…Abstract The Earth's upper mantle is isotopically heterogeneous over large lengthscales, but the lower limit of these heterogeneities is not well quantified…”
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Isotopic Evidence for Multiple Recycled Sulfur Reservoirs in the Mangaia Mantle Plume by J. W. Dottin III, J. Labidi, M. G. Jackson, J. Woodhead, J. Farquhar

“…Abstract Mangaia, an ocean island in the Cook‐Austral volcanic chain, is the type locality for the HIMU mantle reservoir and has also been shown to exhibit…”
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Contrasting Old and Young Volcanism from Aitutaki, Cook Islands: Implications for the Origins of the Cook–Austral Volcanic Chain by Jackson, M G, Halldórsson, S A, Price, A, Kurz, M D, Konter, J G, Koppers, A A P, Day, J M D

“…Abstract The Cook–Austral volcanic lineament is thought to be the product of three overlapping South Pacific hotspot tracks: Macdonald, Arago, and Rarotonga…”
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Trachytic Melt Inclusions Hosted in Clinopyroxene Offer a Glimpse Into Samoan EM2‐Endmember Melts by J. V. Adams, F. J. Spera, M. G. Jackson

“…Abstract We present major and trace element data on clinopyroxene‐hosted, glassy melt inclusions (MIs) from a highly enriched (high 87Sr/86Sr = 0.71856) lava…”
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Hemispheric Geochemical Dichotomy of the Mantle Is a Legacy of Austral Supercontinent Assembly and Onset of Deep Continental Crust Subduction by Jackson, M. G., Macdonald, F. A.

“…Oceanic hotspots with extreme enriched mantle radiogenic isotopic signatures—including low 143Nd/144Nd indicative of subducted continental crust—are linked to…”
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When a Plateau Suppresses a Plume: Disappearance of the Samoan Plume Under the Ontong Java Plateau by Jackson, M. G., Finlayson, V. A., Steinberger, Bernhard, Konrad, Kevin

“…The Samoan hotspot generated an age‐progressive volcanic track that can be traced back to 24 Ma at Alexa Bank, but the trace of the older portion (>24 Ma) of…”
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Testing the Recycled Gabbro Hypothesis for the Origin of “Ghost Plagioclase” Melt Signatures Using 87Sr/86Sr of Individual Olivine‐Hosted Melt Inclusions From Hawai'i by O. E. Anderson, M. G. Jackson, E. F. Rose‐Koga, J. P. Marske, M. E. Peterson, A. A. Price, B. L. Byerly, A. A. Reinhard

“…Abstract Melt inclusions with large, positive Sr anomalies have been described in multiple tectonic settings, and the origins of this unusual geochemical…”
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Cognitive control mechanisms revealed by ERP and fMRI: evidence from repeated task-switching by Swainson, R, Cunnington, R, Jackson, G M, Rorden, C, Peters, A M, Morris, P G, Jackson, S R

“…We investigated the extent to which a common neural mechanism is involved in task set-switching and response withholding, factors that are frequently…”
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Enhanced cognitive control in Tourette Syndrome during task uncertainty by JACKSON, G. M, MUELLER, S. C, HAMBLETON, K, HOLLIS, C. P

“…Tourette Syndrome (TS) is a developmental neurological condition that is characterised by the presence of multiple motor and one or more vocal tics. Tics are…”
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Using advance information in dynamic cognitive control: An ERP study of task-switching by Swainson, R., Jackson, S.R., Jackson, G.M.

“…Ensuring that behavior remains appropriate over time requires dynamic, flexible control. We used the task-switching procedure to investigate the mechanisms…”
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Dissociating neural indices of dynamic cognitive control in advance task-set preparation: An ERP study of task switching by Astle, D.E., Jackson, G.M., Swainson, R.

“…Switching between different tasks is associated with performance deficits, or ‘switch costs’, relative to repeating the same task. Recent evidence suggests…”
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ERP indices of persisting and current inhibitory control: A study of saccadic task switching by Mueller, S.C., Swainson, R., Jackson, G.M.

“…Previous studies have found that inhibition of a biologically dominant prepotent response tendency is required during the execution of a less familiar,…”
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Cognitive deficits in early-onset schizophrenia spectrum patients and their non-psychotic siblings: A comparison with ADHD by Groom, M.J, Jackson, G.M, Calton, T.G, Andrews, H.K, Bates, A.T, Liddle, P.F, Hollis, C

“…Abstract Background Previous research has shown cognitive deficits in patients with schizophrenia spectrum disorders in the areas of executive function, verbal…”
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Inefficient cerebral recruitment as a vulnerability marker for schizophrenia by Liddle, E B, Bates, A T, Das, D, White, T P, Groom, M J, Jansen, M, Jackson, G M, Hollis, C, Liddle, P F

“…Patients with schizophrenia and their first-degree relatives exhibit both abnormally diminished and increased neural activation during cognitive tasks. In…”
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Behavioural and neurophysiological correlates of bivalent and univalent responses during task switching by Mueller, S.C, Swainson, R, Jackson, G.M

“…Abstract A hallmark of human behaviour is its flexibility. In any given circumstance there is typically a range of possible responses that could be selected…”
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