Podrobnosti záznamu

Název
    Landscape evolution and ice-sheet behaviour in a semi-arid polar environment: James Ross Island, NE Antarctic Peninsula
Autor
    Carrivick, Jonathan
    Davies, Bethan
    Glasser, Neil
    Hambrey, Mike
    Nývlt, Daniel
    Smellie, John
Jazyk
    anglicky
Typ dokumentu
    část monografie (kapitola)
Rok
    2013
Zdrojový dokument - monografie
    Antarctic Palaeoenvironments and Earth-Surface Processes
Poznámky
    Počet výtisků: 2000
Výraz tezauru
    James Ross Island, glaciation, sediment-landform assemblages, semi-arid polar environments, landsystem model
Klíčové slovo
    Antarctic
    Behaviour
    Environment
    Evolution
    Ice-sheet
    Island
    James
    Landscape
    NE
    Peninsula
    Polar
    Ross
    Semi-arid
Abstrakt (anglicky)
   This study of landscape evolution presents both new modern and palaeo processlandform data, and analyses the behaviour of the Antarctic Peninsula Ice Sheet through the Last Glacial Maximum (LGM), the Holocene and to the present day. Six sediment-landform assemblages are described and interpreted for Ulu Peninsula, James Ross Island, NE Antarctic Peninsula: (1) the Glacier Ice and Snow Assemblage; (2) the Glacigenic Assemblage, which relates to LGM sediments and comprises both erratic-poor and erratic-rich drift, deposited by cold-based and wetbased ice and ice streams respectively; (3) the Boulder Train Assemblage, deposited during a Mid-Holocene glacier readvance; (4) the Ice-cored Moraine Assemblage, found in front of small cirque glaciers; (5) the Paraglacial Assemblage including scree, pebble-boulder lags, and littoral and fluvial processes; and (6) the Periglacial Assemblage including rock glaciers, protalus ramparts, blockfields, solifluction lobes and extensive patterned ground.
    The interplay between glacial, paraglacial and periglacial processes in this semi-arid polar environment is important in understanding polygenetic landforms. Crucially, cold-based ice was capable of sediment and landform genesis and modification. This landsystem model can aid the interpretation of past environments, but also provides new data to aid the reconstruction of the last ice sheet to overrun James Ross Island.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014