(Article of periodic en Anglais - 2013)

Document title

Lichenometric dating of rock surfaces in the Northern Cascade Range, USA

Authors(s) and Affiliation(s)

O'NEAL M.A. (1 2) ; LEGG N.T. (3) ; HANSON B. (2) ; MORGAN D.J. (4) ; ROTHGEB A. (2) ;
(1) Dep. of Geological Sciences, Univ. Delaware, Newark, ETATS-UNIS
(2) Dept. of Geography, Univ. of Delaware, Newark, ETATS-UNIS
(3) College of Earth, Ocean, and Atmospheric Sciences (CEOAS), Oregon State Univ., Corvallis, ETATS-UNIS
(4) Dept. of Earth and Environmental Sciences, Univ., Vanderbilt, ETATS-UNIS


This study presents a growth curve developed from direct and indirect growth rates of Rhizocarpon geographicum lichens from study sites on Mounts Baker, Rainier, Adams, and Hood in the northern Cascade Range of the western USA. The observations of direct growth rates are based on 31 measurements of 11 lichens growing on different surfaces. This direct growth rate dataset is complemented by indirect growth rates based on measurements of the largest lichen observed on 20 different surfaces over 24-33 yr periods. The revised growth curve for the study area extends the applicable range for dating rock surface in the study area to the seventeenth century, approximately 175 years longer than previous calibrated curves


Article of periodic

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2013, vol. 95, no3 [pp. 241-248-]

Bibliographic references : 35 ref.

Collation : 5 fig., 2 tabl.




Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/geoa.12012

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27740548 : Permanent link - XML version
Powered by Pxxo