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dc.contributor.author Hambrey, Michael J.
dc.contributor.author Smellie, John L.
dc.contributor.author Nelson, Anna E.
dc.contributor.author Johnson, Joanne S.
dc.date.accessioned 2009-05-19T09:14:36Z
dc.date.available 2009-05-19T09:14:36Z
dc.date.issued 2008
dc.identifier.citation Hambrey , M J , Smellie , J L , Nelson , A E & Johnson , J S 2008 , ' Late Cenozoic glacier-volcano interaction on James Ross Island and adjacent areas, Antarctic Peninsula region ' Geological Society of America Bulletin , vol 120 , no. 5-6 , pp. 709-731 . , 10.1130/B26242.1 en
dc.identifier.issn 0016-7606
dc.identifier.other PURE: 100780
dc.identifier.other dspace: 2160/2245
dc.identifier.uri http://hdl.handle.net/2160/2245
dc.identifier.uri http://bulletin.geoscienceworld.org/cgi/content/citation/120/5-6/709/I001676061205709F01 en
dc.description Hambrey, M.J., Smellie, John L., Nelson, Anna E., Johnson, Joanne S., (2008) Late Cenozoic glacier-volcano interaction on James Ross Island and adjacent areas, GeoAntarctic Peninsula region, Geological Society of America Bulletin 120 (5-6), 709-731 en
dc.description.abstract The northern Antarctic Peninsula region has undergone ~10 m.y. of eruptive activity by basaltic volcanoes, mainly in subglacial settings. Spectacular exposures of lava-fed deltas, capped by basalt flows and commonly underlain by glacigenic sediments on top of a Cretaceous sedimentary “basement,” characterize James Ross, Vega, and other islands and promontories in the region. Neogene strata are collectively known as the James Ross Island Volcanic Group and record a cryptic history of glaciation, with the timing of events determinable by argon-isotope dating. Focusing especially on the glacigenic sediments themselves, and their relationships with overlying or bounding volcanic rocks, we define facies associations related to (1) eruptions beneath thick ice (>200 m) that produced lava-fed deltas resting on, and intermingling with, diamictite; and (2) eruptions under marine conditions that typically culminated in the development of several tuff-cone successions, some on top of presumably relict glacially striated surfaces. A combination of provenance studies on clasts in the glacigenic sediments, some of which are derived from the Antarctic Peninsula, and geochronology, leads to the conclusion that an Antarctic Peninsula Ice Sheet extended over James Ross and Vega Islands at about the time that the main volcanic edifi ces began to grow, i.e., prior to ca. 6.2 Ma at least. Much of the subsequent development of the succession is attributed to the interaction between the growing volcanoes and local ice caps. Full resolution of glacial-interglacial events in this region promises to inform the debate about the stability of the most climatically sensitive part of the Antarctic Ice Sheet during the Neogene Period. en
dc.format.extent 23 en
dc.language.iso eng
dc.relation.ispartof Geological Society of America Bulletin en
dc.subject neogene glacial fluctuations en
dc.subject James Ross Island en
dc.subject Antarctic Peninsula ice Sheet en
dc.subject glacier-volcano interaction en
dc.subject glacigenic sediments en
dc.subject lava-fed deltas en
dc.subject argon dating en
dc.subject strontium dating en
dc.title Late Cenozoic glacier-volcano interaction on James Ross Island and adjacent areas, Antarctic Peninsula region en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1130/B26242.1
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Centre for Glaciology en
dc.description.status Peer reviewed en


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