Estimation of Late Glacial and Holocene chemical erosion rates, Lake Chambon watershed, Massif Central, France

Authors
Gay, I Macaire, JJ
Citation
I. Gay et Jj. Macaire, Estimation of Late Glacial and Holocene chemical erosion rates, Lake Chambon watershed, Massif Central, France, CR AC S IIA, 328(6), 1999, pp. 387-392
Citations number
22
Categorie Soggetti
Earth Sciences
Journal title
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DELA TERRE ET DES PLANETES
ISSN journal
12518050 → ACNP
Volume
328
Issue
6
Year of publication
1999
Pages
387 - 392
Database
ISI
SICI code
1251-8050(199903)328:6<387:EOLGAH>2.0.ZU;2-5
Abstract
The method consists of comparing the chemical composition of lacustrine sed iments with the chemical composition of their source-rocks in a watershed ( the Lake Chambon watershed), using the usual method of isoelement (Al) chem ical weathering budget. Chemical losses (P#4 to 13 %) and mean chemical ero sion rates (E-c = 8 to 43 t.km(-2).yr(-1)) were calculated for some phases of the Late Glacial and Holocene periods. These values show climatic and an thropic impacts on chemical weathering, in relation to mechanical erosion. ((C) Academie des sciences/Elsevier, Paris.)