Things underclay often describes (“underclay ________”)
limestone
How underclay often is described (“________ underclay”)
arenaceous,
argillaceous,
thick,
hard,
stigmarian,
reddish,
gray,
lowest,
black,
upper,
soft,
true,
arenaceons,
boggy,
bituminous,
pennsylvanian,
dark,
greenish,
sandy
Commonly used words are shown in bold. Rare words are dimmed. Click on a word above to view its definition.
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