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Pettijohn gives the following descriptive terms based on grain size, avoiding the use of terms such as "clay" or "argillaceous", which carry an implication of chemical composition:
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composed of fragments that are coarser than sand and which are enclosed in a matrix that varies in kind and amount. It is equivalent to a
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216:(5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp.
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58:, would all be considered psephites. It is equivalent to the
62:-derived term rudite. Psephite is more commonly used for a
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30:, "pebble") is either a
196:A Greek–English Lexicon
73:Descriptive size terms
272:-related article is a
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158:(lutaceous)
126:(psammitic)
110:(rudaceous)
102:(psephitic)
328:Rock stubs
317:Categories
166:References
95:gravel(ly)
150:(pelitic)
235:(1975),
143:clay(ey)
123:psammite
99:psephite
66:rudite.
32:sediment
20:Psephite
199:at the
131:arenite
119:sand(y)
116:Medium
92:Coarse
78:Texture
52:breccia
44:Shingle
28:psephos
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155:lutite
147:pelite
107:rudite
87:Latin
81:Common
48:gravel
40:rudite
268:This
181:ψῆφος
140:Fine
84:Greek
60:Latin
24:Greek
274:stub
241:ISBN
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