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National Geologic Map Database

Geologic Unit: Diamond Hill

Usage:

Diamond Hill Member of Rowland Formation (OR)


Geologic age:

Quaternary
Pleistocene


Type section, locality, area and/or origin of name:

Named from Diamond Hill Road which crosses Little Muddy Creek at type section of Rowland Formation, in NW/4 SW/4 sec. 9, T. 15 S., R. 3 W., Linn Co., OR (Balster and Parsons, 1969).


AAPG geologic province:

Cascades province


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).