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(Article of periodic en Anglais - 2013)

Document title

Schmidt hammer exposure-age dating (SHD) of late Quaternary fluvial terraces in New Zealand

Authors(s) and Affiliation(s)

STAHL T. (1) ; WINKLER S. (1) ; QUIGLEY M. (1) ; BEBBINGTON M. (2) ; DUFFY B. (1) ; DUKE D. (1) ;
(1) Dept. of Geological Sciences, Univ. of Canterbury, Christchurch, NOUVELLE-ZELANDE
(2) Volcanic Risk Solutions, Massey Univ., Palmerston North, NOUVELLE-ZELANDE

Abstract

Schmidt hammer (SH) R-values are reported for surface clasts from numerically dated Holocene and Pleistocene fluvial terraces in the South Island of New Zealand. The R-values are combined with previously obtained weathering rind, radiocarbon, terrestrial cosmogenic nuclide and luminescence terrace ages to derive SH R-value chronofunctions for greywacke clasts from 4 distinct locations. The results show that different weathering rates affect the form of the SH R-value versus Age curve. Power law scaling constants suggest changes in clast weathering rates are primarily affected by climatic (precipitation and temperature) and sedimentologic variables (source terrane petrology). Age uncertainties of ~22% of the surface age suggest that Schmidt hammer exposure-age dating (SHD) is a reliable calibrated-age dating technique for fluvial terraces

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no15 [pp. 1831-1850]

Bibliographic references : 2 p.

Collation : 6 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3427

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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