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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Contrasting geomorphic impacts of pre- and post-Columbian land-use changes in Anglo America

Physical geography of medium-sized rivers, focusing on the Southeastern and South-Central United States. Part I

Auteur(s) et Affiliation(s)

JAMES, L.A.
Dep. of Geography, Univ. of South Carolina, Columbia, Etats-Unis
MOSSA, J.
Dep. of Geography, Univ. of Florida, Gainesville, Etats-Unis
HEITMULLER, F.T.
Dep. of Geography and Geology, Univ. of Southern Mississippi, Hattiesburg, Etats-Unis


Description :
This review paper evaluates assumptions of pristine landscapes and European disruption from a geomorphic perspective, i.e., with regard to fluvial erosion and sedimentation rates. Geoarcheologic and sedimentologic evidence indicates that the potential for geomorphic change with land-use practices utilized by European settlers was potentially very effective in producing erosion and sedimentation in Anglo America (United States and Canada). A general lack of evidence of rapid sedimentation prior to the time of European contact implies that pre-Columbian agriculture was not highly disruptive geomorphically. Examples from northern California and the southeastern Piedmont support this interpretation by documenting geomorphically stable conditions followed by episodic fluvial sedimentation after colonization.


Type de document :
Congrès

Source :
Meeting of the Southeastern Division of the Association of American Geographers (SEDAAG), Birmingham, Etats-Unis, 2010-11, Physical geography, issn : 0272-3646, 2011, vol. 32, n°. 5, p. 399-422, nombre de pages : 24, Références bibliographiques : 6 p.

Date :
2011

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis

Langue :
Anglais
Droits :
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