georefid:2002-061383SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1029/2000TC001260<gco:CharacterString>Structural and tectonic evolution of the Ross Sea Rift in the Cape Colbeck region, eastern Ross Sea, Antarctica</gco:CharacterString>2001-01-01publicationgeorefid:2002-061383doi:10.1029/2000TC001260Luyendyk, Bruce P.University of California at Santa Barbara, Department of Geological Sciences, Santa Barbara, CA, United StatesauthorSorlien, Christopher C.University of Alabama, United StatesauthorWilson, Douglas S.Colorado College, United StatesauthorBartek, Louis R.authorSiddoway, Christine S.authorAmerican Geophysical Union, Washington, DC, United StatespublisherdocumentDigitalTectonics20 (6)933-958Marine geophysics was used to investigate the structural framework and tectonic history of the eastern border of the Ross Sea Rift and to integrate this with what is known of Marie Byrd Land. The region is characterized by a passive margin with a flat shelf cut by the Miocene Colbeck Trough. Seismic sequences and unconformities of the Ross Sea areas were correlated with the Colbeck region. Late Oligocene and younger sections unconformably overlay Early to Late Cretaceous and early Tertiary sequences. This unconformity is underlain by two units interpreted as syn-rift units. The onshore and offshore region was widely faulted in Early and Late Cretaceous time and subsided during Late Cretaceous and Cenozoic time. Detachment-style extension is indicated for the late Early Cretaceous. Tilting of the shelf occurred in late Cenozoic due to continued subsidence of the shelf and uplift in western Marie Byrd Land. Further study of the dating of the units sampled in this study will provide additional correlation. (Mod. auth. abstr.)completedStructural geologyAfricaAntarctic OceanAntarcticabasementbedrockCape Colbeckcontinental marginCretaceousfaultsgeophysical methodsGhanagravity methodsIvory CoastLeg 159mantlemantle plumesMarie Byrd LandMesozoicmetamorphic rocksmylonitesOcean Drilling Programpassive marginsplate tectonicsreflection methodsrheologyriftingRoss Ice ShelfRoss SeaRoss Sea Riftsamplingseismic methodsSouthern Oceantectonic elementstectonicsWest Africaurn:org.iodp:exp:159urnlargerWorkCitationcampaignEnglishgeoscientificInformation-180.0000180.0000-90.000012.0000AntarcticaGhanaIvory CoastRoss Seaapplication/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www.agu.org/journals/tc/v020/i006/2000TC001260/2000TC001260.pdfdownload