Show simple item record

dc.contributor.authorHayes, Jorden L.en
dc.contributor.authorRiebe, Clifford S.en
dc.contributor.authorHolbrook, W. Stevenen
dc.contributor.authorFlinchum, Brady A.en
dc.contributor.authorHartsough, Peter C.en
dc.date.accessioned2019-11-14T16:04:22Z
dc.date.available2019-11-14T16:04:22Z
dc.date.issued2019-09en
dc.identifier.othereaao0834en
dc.identifier.urihttp://hdl.handle.net/10919/95549
dc.description.abstractWeathering in the critical zone causes volumetric strain and mass loss, thereby creating subsurface porosity that is vital to overlying ecosystems. We used geochemical and geophysical measurements to quantify the relative importance of volumetric strain and mass loss-the physical and chemical components of porosity-in weathering of granitic saprolite of the southern Sierra Nevada, California, USA. Porosity and strain decrease with depth and imply that saprolite more than doubles in volume during exhumation to the surface by erosion. Chemical depletion is relatively uniform, indicating that changes in porosity are dominated by processes that cause strain with little mass loss. Strain-induced porosity production at our site may arise from root wedging, biotite weathering, frost cracking, and the opening of fractures under ambient topographic stresses. Our analysis challenges the conventional view that volumetric strain can be assumed to be negligible as a porosity-producing mechanism in saprolite.en
dc.description.sponsorshipNSFNational Science Foundation (NSF) [EAR-1331939, EPS-1208909]; Dickinson College Research and Developmenten
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherAAASen
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.titlePorosity production in weathered rock: Where volumetric strain dominates over chemical mass lossen
dc.typeArticle - Refereeden
dc.description.notesJ.L.H., C.S.R., W.S.H., and B.A.F. were supported by NSF EPS-1208909. C.S.R. and P.C.H. were supported by NSF EAR-1331939. J.L.H. acknowledges support from Dickinson College Research and Development.en
dc.title.serialScience Advancesen
dc.identifier.doihttps://doi.org/10.1126/sciadv.aao0834en
dc.identifier.volume5en
dc.identifier.issue9en
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen
dc.identifier.pmid31555724en
dc.identifier.eissn2375-2548en


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Creative Commons Attribution-NonCommercial 4.0 International
License: Creative Commons Attribution-NonCommercial 4.0 International