A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes

dc.contributor.authorVaughn, A P M
dc.contributor.authorPankhurst, Robert J
dc.contributor.authorFanning, Christopher
dc.date.accessioned2015-12-13T23:25:14Z
dc.date.issued2002
dc.date.updated2015-12-12T09:24:07Z
dc.description.abstractNew structural and age data suggest that West Gondwana may have been at lower palaeolatitudes than previously interpreted from Albian sequences in Gondwana marginal suspect terranes. The Palmer Land event, which juxtaposed Mesozoic terranes on the Gondwana margin, deformed granitoids in the southern Antarctic Peninsula. U-Pb SHRIMP dating of zircons from a microgranite dyke yields a crystallization age of 106.9 ± 1.1 Ma. This result and re-interpretation of the structural position of another granite pluton date the Palmer Land event, and probable terrane collision, as late Early Cretaceous, and not latest Jurassic as formerly interpreted.
dc.identifier.issn0016-7649
dc.identifier.urihttp://hdl.handle.net/1885/92577
dc.publisherGeological Society of London
dc.sourceJournal of the Geological Society
dc.subjectKeywords: Cretaceous; dating method; Gondwana; granite; paleoclimate; paleolatitude; plate motion; Antarctica Gondwana; Palaeolatitude; Superplumes; West Antarctic
dc.titleA mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes
dc.typeJournal article
local.bibliographicCitation.lastpage116
local.bibliographicCitation.startpage113
local.contributor.affiliationVaughn, A P M, Natural Environment Research Council
local.contributor.affiliationPankhurst, Robert J, British Geological Survey
local.contributor.affiliationFanning, Christopher, College of Physical and Mathematical Sciences, ANU
local.contributor.authoremailu4029993@anu.edu.au
local.contributor.authoruidFanning, Christopher, u4029993
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor040303 - Geochronology
local.identifier.ariespublicationMigratedxPub23701
local.identifier.citationvolume159
local.identifier.doi10.1144/0016-764901-090
local.identifier.scopusID2-s2.0-0036184193
local.identifier.uidSubmittedByMigrated
local.type.statusPublished Version

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