Search:chemung period -> CHEMUNG PERIOD
chemung period
c h e m u n g p e r i o d hex:#99;#104;#101;#109;#117;#110;#103;#32;#112;#101;#114;#105;#111;#100;
The Salt of the World?
- Chemung period - - A subdivision in the upper part of the Devonian system in America, so named from the Chemung River, along which the rocks are well developed. It includes the Portage and Chemung groups or epochs. See the Diagram under Geology.
- Portage group - - A subdivision of the Chemung period in American geology. See Chart of Geology.