“It has a situation in a basinlike hollow on a plateau some forty-five hundred feet above sea level.”

“These occur where rocks have been folded down into a basinlike form.”

“When bivalves diversified in the Middle to Upper Ordovician, both classes occupied a full range of environments, from nearshore to basinal.”

“The Nun Mine Member consists of thin-bedded calcareous mudstones locally with abundant radiolaria, and represents offshore, basinal environments.”

“It has been interpreted as having been deposited in an offshore, inner basinal to turbiditic basinal environment.”