U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Bullfrog Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Till
    • Gravel
  • AAPG geologic province:
    • Cascades province
Publication:

Porter, S.C., 1976, Pleistocene glaciation in the southern part of the North Cascade Range, Washington: Geological Society of America Bulletin, v. 87, no. 1, p. 61-75.


Summary:

Named as lowest (of 4) member of Lakedale Drift for Bullfrog Pond, 2 km downstream from type. Type locality: Borrow pit beside south bank of Cle Elum River, NE/4 SW/4 sec.19 T20N R15E, Kittitas Co, WA. Consists of till and gravel moraines and outwash. Is from 25 to 80 m thick. Overlies Indian John Member (new) (Kittitas Drift); underlies Ronald Member (new) (Lakedale Drift). Age is Pleistocene (Fraser Glaciation, 15,000 to 13,500 yr B.P.)

Source: GNU records (USGS DDS-6; Menlo GNULEX).


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 ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 03:38:04 PM MDT