niagara period

English - English

Definition of niagara period in English English dictionary

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

A subdivision or the American Upper Silurian system, embracing the Medina, Clinton, and Niagara epoch

Hyphenation

Ni·ag·a·ra pe·ri·od

Turkish pronunciation

nayägrı pîriıd

Pronunciation

/nīˈagrə ˈpərēəd/ /naɪˈæɡrə ˈpɪriːəd/