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Title: Physical Weathering
Authors: Pinho, António B.
Andrade, Pedro S.
Duarte, Isabel M.R.
Editors: Bobrowsky, Peter T.
Marker, Brian
Keywords: Physical weathering
Issue Date: Feb-2017
Publisher: Springer International Publishing AG
Citation: Pinho A.B., Andrade P.S., Duarte I.M.R. (2017) Physical Weathering. In: Bobrowsky P., Marker B. (eds) Encyclopedia of Engineering Geology. Encyclopedia of Earth Sciences Series. Springer, Cham, Germany: Springer International Publishing, 5 p. (Published online: 13 February 2017).
Abstract: Living reference work entry First Online: 13 February 2017 Synonyms: Disintegration; Fragmentation; Mechanical weathering; Slaking Definition: Physical weathering of rocks consists of their physical disintegration, without chemical weathering, by several physical actions such as (a) significant diurnal and/or seasonal thermal variations, (b) expansion and fracturing of rock due either to stress relief or increase of pressure in rock pores and fissures by expansion volume associated with water freezing, and (c) mechanical actions of several weathering agents such as water flow, glaciers, wind, living organisms (e.g., roots of trees, cavities made by rodents), and the growth of poorly soluble salts, in rock pores, either by crystallization pressure, such as hydration pressure or by differential thermal expansion. These are of fundamental importance in the breakdown and fragmentation of rocks. Introduction:The weathering of rocks is an important geological phenomenon because it leads to the formation of soils (whether residual or sedimentary),... This is a preview of subscription content, log in to check access Copyright information © Springer International Publishing AG 2017
ISBN: Online ISBN 978-3-319-12127-7
ISSN: 1388-4360
Type: bookPart
Appears in Collections:GEO - Publicações - Capítulos de Livros

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