argillaceous rocks, composed essentially of particles of mud.
From clay and chalk, or argillaceous river-mud and chalk or limestone, calcined together, and then ground to powder.
Roggenstein, rog′en-stīn, n. a kind of oolite in which the grains are cemented by argillaceous matter.
argillaceous or marly limestone is also of common occurrence.
It must also not be full of argillaceous and iron-oxide infillings.
argillaceous Rocks are rocks in which clay prevails (including shales and slates).
It alternates with both these rocks, and in like manner with argillaceous schist.
The substratum of these ridges is an argillaceous, compact soil of the eldest formation.
Its powder is a light red, and emits an argillaceous odor when wetted.
The soil of this bottom is an argillaceous or a silicious loam, according as clay or sand happens to predominate in its formation.