Particle Shape

sub-angular

http://resource.geosciml.org/classifier/cgi/particleshape/sub_angular

definition A clastic sedimentary particle showing definite effects of slight abrasion, retaining its original general form, and having faces that are virtually untouched and edges and corners that are rounded off to some extent, such as a glacial boulder with numerous (10-20) secondary corners and a roundness value between 0.25 and 0.35 (midpoint at 0.300). more like this
source Powers, M. C., 1953 A new roundness scale for sedimentary particles. Journal of Sedimentary Petrology, v. 23, p. 117-119 more like this
type
Resource
Concept
in scheme particleshape
has top concept
sub angular
is primary topic of sub angular
top concept of particleshape