Late Oligocene and early Miocene glacimarine sedimentation in the SW Ross Sea, Antarctica: the record from offshore drilling

H...............H

Show simple item record

dc.contributor.author Hambrey, Michael J.
dc.contributor.author Barret, P. J.
dc.contributor.author Powell, R. D.
dc.date.accessioned 2011-09-12T10:07:30Z
dc.date.available 2011-09-12T10:07:30Z
dc.date.issued 2011-09-12
dc.identifier.citation Hambrey , M J , Barret , P J & Powell , R D 2011 , ' Late Oligocene and early Miocene glacimarine sedimentation in the SW Ross Sea, Antarctica: the record from offshore drilling ' Journal of the Geological Society , pp. 105-128 . en
dc.identifier.issn 0016-7649
dc.identifier.other PURE: 170649
dc.identifier.other dspace: 2160/7573
dc.identifier.uri http://hdl.handle.net/2160/7573
dc.description Hambrey, M. J., Barret, P. J., Powell, R. D. (2002). Late Oligocene and early Miocene glacimarine sedimentation in the SW Ross Sea, Antarctica: the record from offshore drilling. Glacier-Influenced Sedimentation on High-Latitude Continental Margins, 203, 105-128. Geological Society Special Publication Meeting on Glacier-Influenced Sedimentation on High-Latitude Continental Margins Location: University of Bristol. en
dc.description.abstract Recent offshore drilling in the SW Ross Sea has recovered three cores with a cumulative thickness of 1500 in of Oligocene-early Miocene strata. Together with data from earlier drilling, notably from the CIROS-1 drillhole 70 kin to the south (702 in of core), the cores record shallow marine glacigenic sedimentation at the margin of a rift basin bordering a mountain range that was breached by outlet glaciers from an ice sheet. This paper focuses on the late Oligocene-early Miocene record, which preserves sedimentary facies that represent warmer glacier ice and climatic conditions than are evident in the Antarctic today. Strata were cored near the South Victoria Land coast, and sedimentary facies include diamictite, conglomerate, breccia, sandstone, siltstone, mudstone and rhythmite. Facies associations, combined with seismic stratigraphic data, indicate an alternating proximal and distal marine record of glacigenic sedimentation, including phases of glacier grounding and variable degrees of iceberg rafting. Reworking by gravity-flow processes and near-shore submarine currents is also evident. These facies, together with evidence for periglacial vegetation, provide evidence of a late Oligocene-early Miocene climatic regime resembling that in the high-Arctic today. Thus, the climate was transitional between cool-temperate conditions of early Oligocene and cold-polar conditions of Quaternary time. en
dc.format.extent 24 en
dc.language.iso eng
dc.relation.ispartof Journal of the Geological Society en
dc.title Late Oligocene and early Miocene glacimarine sedimentation in the SW Ross Sea, Antarctica: the record from offshore drilling en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1144/GSL.SP.2002.203.01.07
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Centre for Glaciology en
dc.description.status Peer reviewed en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair


Advanced Search

Browse

My Account