Definitions for niagara period
This page provides all possible meanings and translations of the word niagara period
a subdivision or the American Upper Silurian system, embracing the Medina, Clinton, and Niagara epoch. The rocks of the Niagara epoch, mostly limestones, are extensively distributed, and at Niagara Falls consist of about eighty feet of shale supporting a greater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology
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"niagara period." Definitions.net. STANDS4 LLC, 2014. Web. 20 Dec. 2014. <http://www.definitions.net/definition/niagara period>.