SISSVoc Default

gravel

http://resource.geosciml.org/classifier/cgi/lithology/gravel

broader
http://resource.geosciml.org/classifier/cgi/lithology/clastic_sediment original
narrower gravel original
gravel_size_sediment original
narrower gravel original
definition Clastic sediment containing greater than 30 percent gravel-size particles (greater than 2.0 mm diameter). Gravel in which more than half of the particles are of epiclastic origin more like this
source definition of gravel from SLTTs 2004; particle sizes defined from Krumbein phi scale (W C Krumbein and L L Sloss, Stratigraphy and Sedimentation, 2nd edition, Freeman, San Francisco, 1963; Krumbein and Pettijohn, 1938, Manual of Sedimentary Petrography: New York, Appleton Century Co., Inc.) more like this
type
Resource original
Concept original
in scheme simplelithology original
is primary topic of gravel