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Probing the deep critical zone beneath the Luquillo Experimental Forest, Puerto Rico

Auteur(s) et Affiliation(s)

BUSS, H.L.
School of Earth Sciences, Univ., Bristol, Royaume-Uni
BRANTLEY, S.L.
Earth and Environmental Systems Inst., The Pennsylvania State Univ., Park, Etats-Unis
SCATENA, F.N.
Dept. of Earth and Environmental Sciences, Univ. of Pennsylvania, Philadephia, Etats-Unis
Earth and Environmental Systems Inst., The Pennsylvania State Univ., Park, Etats-Unis
BLUM, A.
U.S. Geological Survey, Boulder, Etats-Unis
SCHULZ, M.
U.S. Geological Survey, Menlo Park, Etats-Unis
JIMÉNEZ, R.
Dept. of Earth and Environmental Sciences, Univ. of Pennsylvania, Philadephia, Etats-Unis
WHITE, A.F.
U.S. Geological Survey, Menlo Park, Etats-Unis
ROTHER, G.
Chemical Sciences Division, National Lab., Oak Ridge, Etats-Unis
COLE, D.
School of Earth Sciences, Ohio State Univ., Columbus, Etats-Unis


Description :
The AA. investigate the chemical weathering, fracturing and geomorphology of the deep critical zone in the Bisley watershed in the Luquillo Critical Zone Observatory, Puerto Rico, from 2 boreholes. Weathered rinds developed on exposed corestones aboveground and along fracture surfaces on subsurface rocks. Such corestones at the land surface are assumed to be what remains after exhumation of similar, fractured bedrock pieces that were observed in the drilled cores between thick layers of regolith. Some of these subsurface corestones are massive and others are highly fractured, whereas aboveground corestones are generally massive with little to no apparent fracturing. Subsurface corestones are larger and less fractured in the borehole drilled on a road where it crosses a ridge compared with the borehole drilled where the road crosses the stream channel. Both borehole profiles indicate that the weathering zone extends to well below the stream channel in this upland catchment; hence weathering depth is not controlled by the stream level within the catchment and not all of the water in the watershed is discharged to the stream.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2013, vol. 38, n°. 10, p. 1170-1186, nombre de pages : 17, Références bibliographiques : 2 p.

Date :
2013

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

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)