| Abstract: | Soils collected in 2004 along two North American continental-scale transects were subjected to geochemical and mineralogical analyses. In previous interpretations of these analyses, data were expressed in weight percent and parts per million, and thus were subject to the effect of the constant-sum phenomenon. In a new approach to the data, this effect was removed by using centered log-ratio transformations to ‘open‘ the mineralogical and geochemical arrays. Multivariate analyses, including principal component and linear discriminant analyses, of the centered log-ratio data reveal the effects of soil-forming processes, including soil parent material, weathering, and soil age, at the continental-scale of the data arrays that were not readily apparent in the more conventionally presented data. Linear discriminant analysis of the data arrays indicates that the majority of the soil samples collected along the transects can be more successfully classified with Level 1 ecological regional-scale classification by the soil geochemistry than soil mineralogy. A primary objective of this study is to discover and describe, in a parsimonious way, geochemical processes that are both independent and inter-dependent and manifested through compositional data including estimates of the elements and corresponding mineralogy. ?? 2010. |
| Genre: | Article |
| ProdID: | 70037661 |
| Citation Author: | Drew, L. J.; Grunsky, E. C.; Sutphin, D. M.; Woodruff, L. G. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 227 |
| Citation Issue: | 1 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Science of the Total Environment |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 10 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Multivariate analysis of the geochemistry and mineralogy of soils along two continental-scale transects in North America; 2010; Article; Journal; Science of the Total Environment; Drew, L. J.; Grunsky, E. C.; Sutphin, D. M.; Woodruff, L. G. |
| Citation Start Page: | 218 |
| Citation Volume: | 409 |
| Citation Year: | 2010 |
| Type: | citation/reference |
| Text: | Multivariate analysis of the geochemistry and mineralogy of soils along two continental-scale transects in North America; 2010; Article; Journal; Science of the Total Environment; Drew, L. J.; Grunsky, E. C.; Sutphin, D. M.; Woodruff, L. G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/j.scitotenv.2010.08.004 |
| Date Other: | Fri, 1 Jan 2010 00:00 -0600 |
| Publisher: | |
