Weathering rates of buried machine-polished rock disks, Kärkevagge, Swedish Lapland

Auteurs :
THORN, C.E.
DARMODY, R.G.
DIXON, J.C.
SCHLYTER, P.

Description :
Some 48 dolomite, 37 granite, and 19 limestone machine-polished disks were buried at soil horizon boundaries in 16 soil pits to maximum depths of 0.5-0.6 m within Kärkevagge, a presently periglacial, glaciated trough in Arctic Sweden. The objective of the ongoing study is to determine near-surface potential weathering rates beneath birch forest, Dryas heath, heath, meadow, solifluction meadow, and willow vegetation cover types. Selected disks were excavated after 1 year, and all disks were excavated after 4 or 5 years. Poor drainage and decreasing pH were found to promote dolomite weathering rates.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2002, vol. 27, n°. 8, p. 831-845, nombre de pages : 15, Collation : Illustration, Références bibliographiques : 32 ref.

Date :
2002

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley