Grain size distributions of various materials in an abrasion mill

dc.contributor.advisorRogers, John J. W.en_US
dc.creatorSchubert, Carlos, 1938-en_US
dc.date.accessioned2016-04-22T21:58:56Zen_US
dc.date.available2016-04-22T21:58:56Zen_US
dc.date.issued1963en_US
dc.description.abstractWet abrasion of sand-sized quartz and orthoclase in polyethylene bottles for 912 hours showed that abrasion of fine material is practically negligible, in agreement with Kuenen (1959). The size distributions of the sand. sized quartz and orthoclase remained unchanged. The size distributions of sand-sized quartz, orthoclase, plagioclase, and hornblende abraded off of pebbles appear to be lognormal by number percentage. There is considerable question as to the accuracy of the method of counting grains. The size distributions of quartz and orthoclase crushed or abraded to sized less than 0.5 mm appears to be lognormal, which is in disagreement with Rogers, Krueger and Krog (1963). Several tentative reasons are given. Roundness and sphericity of both crushed sand-sized quartz and orthoclase and sand-sized quartz and orthoclase abraded off of pebbles increase with time in the abrasion mill, the rate of change being greater for the fine sand sizes than for the coarse sand sizes. One result of the experiments described in this report is the indication that the size distributions of natural materials seem to be determined by the size distributions of the source rocks. This result is the basis for criticism of the concept of tectonic control of grain size distribution used by Cadigan (1961). It is concluded that the processes of abrasion, sorting, mixing with other sediments, etc. are at least as important as tectonic environment in the production of particular size distributions in sediments.en_US
dc.format.digitalOriginreformatted digitalen_US
dc.format.extent104 ppen_US
dc.identifier.callnoThesis Geol. 1963 Schuberten_US
dc.identifier.citationSchubert, Carlos, 1938-. "Grain size distributions of various materials in an abrasion mill." (1963) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/89898">https://hdl.handle.net/1911/89898</a>.en_US
dc.identifier.digitalRICE0932en_US
dc.identifier.urihttps://hdl.handle.net/1911/89898en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.titleGrain size distributions of various materials in an abrasion millen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentEarth Scienceen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
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