URI,prefLabel,Definition,Source
http://resource.geosciml.org/classifier/cgi/particleaspectratio/any_form,Any form,"Particle has some form, but it is not specified.",
http://resource.geosciml.org/classifier/cgi/particleaspectratio/bladed,Bladed,"Bladed group in Sneed&Folk, (1958), S/L is less than 0.7 and (L-I)/(L-S) is between 0.33 and 0.66.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/bladed_medium,Bladed medium,"S/L is between 0.3 and 0.5 and (L-I)/(L-S) is between 0.33 and 0.66 Sneed&Folk, (1958).","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/compact_bladed,Compact bladed,"S/L is between 0.5 and 0.7 and (L-I)/(L-S) is between 0.33 and 0.66 Sneed&Folk, (1958).","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/equant,Equant,"Particles are compact in Sneed & Folk (1958), ratio of S/L is greater than 0.7.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/fibrous,Fibrous,Particles are so elongate they are fibrous.,"Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/form_not_specified,Form not specified,Particle form may take any or no value. For use in normative descriptions.,this vocabulary
http://resource.geosciml.org/classifier/cgi/particleaspectratio/oblate,Oblate,"Particles are in 'platy group' in Sneed&Folk, (1958), S/L is less than 0.7 and (L-I)/(L-S) is less than 0.33.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/oblate_medium,Oblate medium,"Particles are 'just platy' in Sneed&Folk, (1958), S/L is between 0.3 and 0.5 and (L-I)/(L-S) is less than 0.33.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/particle_geometry_uncertain,Particle form indeterminate,"Particle form is uncertain or not categorizable, generally obscured by overprinting deformation, metamorphism, or alteration, but reason is not specified.",this vocabulary
http://resource.geosciml.org/classifier/cgi/particleaspectratio/prolate,Prolate,"Particles are in 'elongated group' in Sneed & Folk, (1958), S/L is less than 0.7 and (L-I)/(L-S) is greater than 0.66.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/prolate_medium,Prolate medium,"Particle are 'just elongated' in Sneed&Folk, (1958), S/L is between 0.3 and 0.5 and (L-I)/(L-S) is greater than 0.66.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/slightly_flattened,Slightly flattened,"Particles are 'Compact-platy' in Sneed&Folk, (1958), S/L is between 0.5 and 0.7 and (L-I)/(L-S) is less than 0.33.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/slightly_prolate,Slightly prolate,"Particles are compact-elongated in Sneed&Folk, (1958), S/L is between 0.5 and 0.7 and (L-I)/(L-S) is greater than 0.66.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/strongly_flattened,Strongly flattened,"Particles are 'very platy' in Sneed&Folk, (1958), S/L is less than 0.3 and (L-I)/(L-S) is less than 0.33.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/strongly_prolate,Strongly prolate,"Particles are very elongated in Sneed&Folk, (1958), S/L is less than 0.3 and (L-I)/(L-S) is greater than 0.66.","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifier/cgi/particleaspectratio/very_bladed,Very bladed,"S/L is less than 0.3 and (L-I)/(L-S) is between 0.33 and 0.66 Sneed&Folk, (1958).","Sneed and Folk, 1958, Pettijohn et al., 1972, NADM SLTTs, 2004"
http://resource.geosciml.org/classifierscheme/cgi/201202/particleaspectratio,CGI Particle Aspect Ratio Term Vocabulary,"This file contains the CGI Particle Aspect Ratio vocabulary. AspectRatio describes the geometry of particles based on the ratios of lengths of long, intermediate and short axes of grains. Equates to sphericity in sedimentary rocks (ie: the degree to which the shape of a particle approximates a sphere). A quantitative specification is based on the ratio of lengths of long, intermediate and short axes of grain shape (Sneed and Folk, 1958, Zingg, 1935). This vocabulary includes terms for specifying average shape of some collection of particles.(eg: prolate, slightly flattened, very bladed, equant, acicular, tabular). Numeric shape values from Sneed and Folk (1958) are best understood by looking at the pictures of particles with the different shapes there and in Pettijohn et al. (1972).@en .","2009-12-07 SMR Update metadata properties for version, creator, title, and format.  Change skos:HistoryNote to  for information on origin of terms and definitions."