Charles Lyell and modern changes of the Earth the Milledgeville gully

Auteur :
KENNEDY, B.A.

Description :
One major emphasis of Lyell's Principles of Geology was on the abundance and efficacy of present or modern causes in producing geologic change. A key example of Lyell's interest in the modern was his examination of a 20-year-old gully at Milledgeville, Georgia, in January 1846. He explicitely related its ultimate cause to the laying bare of the clayey surface horizons as a result of recent forest clearance and its proximate formation to sunbaked cracks in the clay and erosion by rainfall-induced runoff. Lyell's interest in such short-term erosional features stands in contrast to his successors' focus on geological scale features such as Niagara Falls.


Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 2001, vol. 40, n°. 1-2, p. 91-98, Collation : Illustration, Références bibliographiques : 22 ref.

Date :
2001

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier