Search Results - "Vaughan, Alan P.M."

Tectonic overview of the West Gondwana margin by Vaughan, Alan P.M., Pankhurst, Robert J.

“…The oceanic southern margin of Gondwana, from southern South America through South Africa, West Antarctica, New Zealand (in its pre break-up position), and…”
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Ophiolite obduction pulses as a proxy indicator of superplume events? by Vaughan, Alan P.M., Scarrow, Jane H.

“…A major new synthesis of ophiolite geochronology and map of global Phanerozoic distribution indicates that previously noted pulses of ophiolite obduction can…”
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A window on West Antarctic crustal boundaries: the junction between the Antarctic Peninsula, the Filchner Block, and Weddell Sea oceanic lithosphere by Ferris, Julie K, Vaughan, Alan P.M, King, Edward C

“…A new airborne magnetic survey of the southeastern Antarctic Peninsula and adjacent Weddell Sea embayment (WSE) region suggests a continuity of geological…”
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Melting at the base of the Greenland ice sheet explained by Iceland hotspot history by Rogozhina, Irina, Petrunin, Alexey G., Vaughan, Alan P. M., Steinberger, Bernhard, Johnson, Jesse V., Kaban, Mikhail K., Calov, Reinhard, Rickers, Florian, Thomas, Maik, Koulakov, Ivan

“…Basal melting is widespread in the north-central Greenland ice sheet. Geophysical data and numerical modelling suggest a geothermal anomaly in this region…”
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Evidence for a two-phase Palmer Land event from crosscutting structural relationships and emplacement timing of the Lassiter Coast Intrusive Suite, Antarctic Peninsula: Implications for mid-Cretaceous Southern Ocean plate configuration by Vaughan, Alan P. M., Eagles, Graeme, Flowerdew, Michael J.

“…New analysis of the relationships between geological structural data and radiometric ages for the Lassiter Coast Intrusive Suite indicate that the collisional…”
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Lamprophyre dikes as tectonic markers of late orogenic transtension timing and kinematics: A case study from the Central Iberian Zone by Scarrow, Jane H., Molina, José Francisco, Bea, Fernando, Montero, Pilar, Vaughan, Alan P. M.

“…Variscan Central Iberian Zone lamprophyre dikes cut synorogenic to late orogenic peraluminous S‐type granitoids marking an important shift in regional tectonic…”
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Crustal thickening along the West Antarctic Gondwana margin during mid-Cretaceous deformation of the Triassic intra-oceanic Dyer Arc by Vaughan, Alan P.M., Leat, Philip T., Dean, Alison A., Millar, Ian L.

“…Subduction-related Mesozoic mafic dykes in eastern Palmer Land, Antarctic Peninsula, record the development of an intra-oceanic arc terrane, the Dyer Arc,…”
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Magnetic susceptibilities of rocks of the Antarctic Peninsula: Implications for the redox state of the batholith and the extent of metamorphic zones by Wendt, Anke S., Vaughan, Alan P.M., Ferraccioli, Fausto, Grunow, Anne M.

“…A combination of 1555 magnetic susceptibility measurements from the Antarctic Peninsula between 65°S to 72°S (for which the raw data are made available), and…”
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Gondwana breakup and plate kinematics: Business as usual by Eagles, Graeme, Vaughan, Alan P. M.

“…A tectonic model of the Weddell Sea is built by composing a simple circuit with optimized rotations describing the growth of the South Atlantic and SW Indian…”
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West Antarctic Rift System in the Antarctic Peninsula by Eagles, Graeme, Larter, Robert D., Gohl, Karsten, Vaughan, Alan P. M.

“…Decades after the recognition of the West Antarctic Rift System, and in spite of its global importance, the location and nature of the plate boundary it formed…”
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Synkinematic emplacement of Lassiter Coast Intrusive Suite plutons during the Palmer Land Event; evidence for mid-Cretaceous sinistral transpression at the Beaumont Glacier in eastern Palmer Land by Vaughan, Alan P. M, Storey, Craig, Kelley, Simon P, Barry, Tiffany L, Curtis, Michael L

“…New structural and geochronological data from the Eastern Palmer Land Shear Zone, in the vicinity of Beaumont Glacier, provide the first evidence of dated…”
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A new supercontinent self-destruct mechanism; evidence from the Late Triassic-Early Jurassic by Vaughan, Alan P. M, Storey, Bryan C

“…We present a new conceptual model where supercontinents, by focusing subduction on narrow areas of the 670 km mantle discontinuity, trigger superplume events…”
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K-rich mantle metasomatism control of localization and initiation of lithospheric strike-slip faulting by Vaughan, Alan P. M., Scarrow, Jane H.

“…ABSTRACT A conceptual model is proposed in which bulk transtension, or local transtension during bulk simple shear (resulting from mantle anisotropy contrasts…”
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A Mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula; implications for terrane accretion timing and Gondwana palaeolatitudes by Vaughan, Alan P. M, Pankhurst, Robert J, Fanning, C. Mark

“…New structural and age data suggest that West Gondwana may have been at lower palaeolatitudes than previously interpreted from Albian sequences in Gondwana…”
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The Dufek and Forrestal intrusions, Antarctica: A centre for Ferrar Large Igneous Province dike emplacement? by Ferris, Julie K., Storey, Bryan C., Vaughan, Alan P. M., Kyle, Philip R., Jones, Phil C.

“…Newly acquired aeromagnetic data indicate the presence of a dike swarm that may have acted as a magma transport and feeder system from the plume impact site up…”
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The generation of sodic granite magmas, western Palmer Land, Antarctic Peninsula by Wareham, Christopher D., Millar, Ian L., Vaughan, Alan P. M.

“…It is shown that subduction-related Mesozoic to Cainozoic granites in western Palmer Land of Antarctica have similar chemical compositions to Archean…”
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The Auriga Nunataks shear zone: Mesozoic transfer faulting and arc deformation in northwest Palmer Land, Antarctica by Vaughan, Alan P. M., Millar, Ian L., Thistlewood, Laurence

“…The Auriga Nunataks shear zone places new tectonic and temporal constraints on the Mesozoic evolution of West Antarctica. The shear zone is a long‐lived,…”
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Granitoid pluton formation by spreading of continental crust: the Wiley Glacier complex, northwest Palmer Land, Antarctica by Vaughan, Alan P.M., Wareham, Christopher D., Millar, Ian L.

“…The emplacement mechanism, geometry, and isotope geochemistry of plutons of the Wiley Glacier complex suggest that new continental crust grew by multiple…”
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The Wiley Glacier complex, Antarctic Peninsula: pluton growth by pulsing of granitoid magmas by Wareham, Christopher D., Vaughan, Alan P.M., Millar, Ian L.

“…Early Cretaceous gabbro, quartz-diorite-granodiorite, and tonalite-granodiorite plutons of the Wiley Glacier complex, in the Antarctic Peninsula magmatic arc,…”
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A tectonomagmatic model for the genesis and emplacement of Caledonian calc-alkaline lamprophyres by Vaughan, Alan P. M

“…Petrogenetically related, Caledonian calc-alkaline lamprophyric and shoshonitic dykes exposed in a 10 km wide zone trending SW from Clogher Head, E Ireland,…”
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