Lectionary Calendar
Wednesday, September 10th, 2025
the Week of Proper 18 / Ordinary 23
Attention!
Take your personal ministry to the Next Level by helping StudyLight build churches and supporting pastors in Uganda.
Click here to join the effort!

Bible Dictionaries
Niagara Period

Webster's Dictionary

Search for…
or
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Prev Entry
Ngina
Next Entry
Nias
Resource Toolbox

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.

Bibliography Information
Webster, Noah. Entry for 'Niagara Period'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​n/niagara-period.html. 1828.
 
adsfree-icon
Ads FreeProfile