"Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation
It has been proposed that deformation tills have fractal particle-size distributions, reflecting scale-invariant debris-comminution processes. Numerical simulations, however, show that fractal dimensions (m) typical of deformation tills can be produced by the mixing of Gaussian parent populations, a...
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/838c8331-49b8-4887-a74a-56cbdedafcfc 2023-05-15T16:21:45+02:00 "Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation Benn, Douglas Iain Gemmell, AMD 2002-05 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/fractal-dimensions-of-diamictic-particlesize-distributions-simulations-and-evaluation(838c8331-49b8-4887-a74a-56cbdedafcfc).html http://www.scopus.com/inward/record.url?scp=0036075491&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Benn , D I & Gemmell , AMD 2002 , ' "Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation ' , Geological Society of America Bulletin , vol. 114 , pp. 528-532 . deformation till fractals particle-size analysis SUBGLACIAL TILL DEFORMATION SEDIMENTS CHARACTER ICELAND GLACIER FACIES GOUGE article 2002 ftunstandrewcris 2021-12-26T14:11:24Z It has been proposed that deformation tills have fractal particle-size distributions, reflecting scale-invariant debris-comminution processes. Numerical simulations, however, show that fractal dimensions (m) typical of deformation tills can be produced by the mixing of Gaussian parent populations, analogous to the mechanical mixing of coarse-, medium- and fine-grained sorted sediments. The simulated distributions have high r(2) values (>0.98) and narrow 95% confidence limits, indicating that fractal analysis cannot distinguish diamictons that have been created by shearing from those formed by other mechanisms, such as the mixing of preexisting sediments. The fractal dimensions of diamictons reflect the relative amounts of coarse and fine material in the distribution, but are not uniquely diagnostic of particular genetic processes. Article in Journal/Newspaper glacier Iceland University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
deformation till fractals particle-size analysis SUBGLACIAL TILL DEFORMATION SEDIMENTS CHARACTER ICELAND GLACIER FACIES GOUGE |
spellingShingle |
deformation till fractals particle-size analysis SUBGLACIAL TILL DEFORMATION SEDIMENTS CHARACTER ICELAND GLACIER FACIES GOUGE Benn, Douglas Iain Gemmell, AMD "Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation |
topic_facet |
deformation till fractals particle-size analysis SUBGLACIAL TILL DEFORMATION SEDIMENTS CHARACTER ICELAND GLACIER FACIES GOUGE |
description |
It has been proposed that deformation tills have fractal particle-size distributions, reflecting scale-invariant debris-comminution processes. Numerical simulations, however, show that fractal dimensions (m) typical of deformation tills can be produced by the mixing of Gaussian parent populations, analogous to the mechanical mixing of coarse-, medium- and fine-grained sorted sediments. The simulated distributions have high r(2) values (>0.98) and narrow 95% confidence limits, indicating that fractal analysis cannot distinguish diamictons that have been created by shearing from those formed by other mechanisms, such as the mixing of preexisting sediments. The fractal dimensions of diamictons reflect the relative amounts of coarse and fine material in the distribution, but are not uniquely diagnostic of particular genetic processes. |
format |
Article in Journal/Newspaper |
author |
Benn, Douglas Iain Gemmell, AMD |
author_facet |
Benn, Douglas Iain Gemmell, AMD |
author_sort |
Benn, Douglas Iain |
title |
"Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation |
title_short |
"Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation |
title_full |
"Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation |
title_fullStr |
"Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation |
title_full_unstemmed |
"Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation |
title_sort |
"fractal dimensions" of diamictic particle-size distributions: simulations and evaluation |
publishDate |
2002 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/fractal-dimensions-of-diamictic-particlesize-distributions-simulations-and-evaluation(838c8331-49b8-4887-a74a-56cbdedafcfc).html http://www.scopus.com/inward/record.url?scp=0036075491&partnerID=8YFLogxK |
genre |
glacier Iceland |
genre_facet |
glacier Iceland |
op_source |
Benn , D I & Gemmell , AMD 2002 , ' "Fractal dimensions" of diamictic particle-size distributions: simulations and evaluation ' , Geological Society of America Bulletin , vol. 114 , pp. 528-532 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766009733309792256 |