Record of Holocene glacial oscillations in Bransfield Basin as revealed by siliceous microfossil assemblages

  title={Record of Holocene glacial oscillations in Bransfield Basin as revealed by siliceous microfossil assemblages},
  author={Mar{\'i}a Angeles B{\'a}rcena and Rainer Gersonde and Santiago Ledesma and Joan Fabres and Antoni M. Calafat and Miquel Canals and Francisco Javier Sierro and Jos{\'e}-Abel Flores},
  journal={Antarctic Science},
  pages={269 - 285}
Two gravity cores, Gebra-1 and Gebra-2 from the central and eastern basins of Bransfield Strait, West Antarctica, consist mainly of hemipelagic, laminated muds with black layers rich in sand-sized volcanic ash. Micropalaeontological (diatoms and radiolarians) and geochemical (organic and inorganic) analyses, together with radiometric dating (U/Th, 14C and 210Pb) have been performed on both cores. AMS analyses on Total Organic Carbon yielded a 14C-age older than expected, 2810 yr BP for the core… 
Holocene neoglacial events in the Bransfield Strait (Antarctica). Palaeocenographic and paleoclimatic significance
Geochemical analysis, micropalaeontological analysis and radiometric dating techniques were performed on four gravity cores, G-1, G-2, A-3 and A-6, recovered during the BIO Hesperides expeditions
Bransfield Basin fine-grained sediments: late-Holocene sedimentary processes and Antarctic oceanographic conditions
The Antarctic Peninsula is sensitive to climatic change due to its northerly position and to the relatively reduced volume and character of its ice cover. High-resolution palaeoclimatic records from
Late Holocene climate change recorded in proxy records from a Bransfield Basin sediment core, Antarctic Peninsula
The glacimarine environment of the Antarctic Peninsula region is one of the fastest warming places on Earth today, but details of changes in the recent past remain unknown. Large distances and
Holocene climate change in the Bransfield Basin, Antarctic Peninsula: evidence from sediment and diatom analysis
Abstract We present the first study from the Bransfield Basin that extends through the Holocene, recording the variable climate history back to the decoupling of the ice sheet from the continental
Unstable Climate Oscillations during the Late Holocene in the Eastern Bransfield Basin, Antarctic Peninsula
Abstract Core A9-EB2 from the eastern Bransfield Basin, Antarctic Peninsula, consists of pelagic (diatom ooze-clay couplets and bioturbated diatom ooze) and hemipelagic (bioturbated mud) sediments
Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica)
The Late Quaternary climate history of the Larsemann Hills has been reconstructed using siliceous microfossils (diatoms, chrysophytes and silicoflagellates) in sediment cores extracted from three
Holocene sea ice-ocean-climate variability from Adélie Land, East Antarctica
Marine sedimentation from the Adelie Land continental margin of East Antarctica provides unique high resolution records of Holocene environmental change. The subannually resolved sediment cores
Glacial contourites on the Antarctic Peninsula margin: insight for palaeoenvironmental and palaeoclimatic conditions
  • R. Lucchi, M. Rebesco
  • Environmental Science, Geography
    Geological Society, London, Special Publications
  • 2007
Abstract Deep-sea finely laminated and barren glacial sediments occur in the sediment drift field offshore the Pacific margin of the Antarctic Peninsula where a weak contour current flows at present
Late Holocene stable isotope chronology and meltwater discharge event in Maxwell and Admiralty bays, King George Island, Antarctica
Two short gravity cores were retrieved to obtain palaeoclimatic information from Maxwell and Admiralty bays, King George Island, South Shetland Islands. AMS 14C age dates, sediment properties (grain


Recent diatom record of McMurdo Sound, Antarctica: Implications for history of sea ice extent
Analyses of diatom assemblages within surface sediments from McMurdo Sound, Antarctica, document the regional circulation patterns in this large embayment in the southwestern Ross Sea. Thalassiosira
Productivity cycles of 200–300 years in the Antarctic Peninsula region: Understanding linkages among the sun, atmosphere, oceans, sea ice, and biota
Compared to the rest of the world9s oceans, high-resolution late Holocene paleoclimatic data from the Southern Ocean are still rare. We present a multiproxy record from a sediment core retrieved from
Tectonic and sedimentary evolution of the Bransfield Basin, Antarctica
The Bransfield basin is the youngest and best developed of a series of extensional marginal basins on the Pacific margin of the Antarctic Peninsular. Marine geophysical data collected over five
Sequence Stratigraphy of the Bransfield Basin, Antarctica: Implications for Tectonic History and Hydrocarbon Potential: Chapter 2
Application of sequence stratigraphic concepts to seismic reflection profiles from the Bransfield Basin indicates that this modern backarc basin began to form during the waning stages of subduction
Diatom distribution in the Weddell Gyre region during late winter
Diatoms from the water column and sea-ice were analyzed in a data set collected from the Soviet icebreaker MIKHAIL SOMOV in late austral winter (October-November) 1981 in the Weddell Gyre region. Two
Late Pleistocene Eucampia antarctica abundance stratigraphy in the Atlantic sector of the Southern Ocean
A stratigraphy based upon abundance changes in the marine diatom Eucampia antarctica (Castr.) Mangin is presented for Late Pleistocene sediments of the Atlantic sector of the Southern Ocean south of