Long-term rates of denudation in the Dry Valleys, Transantarctic Mountains, southern Victoria Land, Antarctica based on in-situ-produced cosmogenic 21Ne
published at : Cosmogenic isotopes in geomorphology
Concentrations of cosmogenic 21Ne measured in quartz have been used to estimate long-term rates of denudation for contrasting landscape components in the Dry Valleys area. Samples of Beacon Supergroup sandstones and granitic basement were collected from 2 contrasting landscape elements to assess variations in rates of denudation with topographic position. The sample sites for rectilinear slopes were selected because of proximity to 40Ar/39Ar-dated lavas and ash-avalanche deposits. Combined with the preservation of volcanic deposits dating back to the mid-Miocene, these 21Ne data demonstrate that only minimal modification of the landscape has occurred in the Dry Valleys over at least the past 15 Ma
published at : Geomorphology / ISSN 0169-555X
Editor : Elsevier, Amsterdam - PAYS-BAS (1987)
Millesime : 1999, vol. 27, no 1-2 [pp. 113-129]
Bibliographic references : 52 ref.
INIST-CNRS, Cote INIST : 21151