- Usage in publication:
-
- Marjum formation*
- Modifications:
-
- Original reference
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Great Basin province
Summary:
Pg. 9, 10. Marjum formation. Gray to dark, more or less thin-bedded arenaceous limestone, 1,092 feet thick. Underlies Weeks formation and overlies Wheeler formation. Age is Middle Cambrian. [Marjum limestone adopted by the USGS.]
Type locality: in cliffs on south side of Marjum Pass, House Range, [Millard Co.], western UT.
Source: US geologic names lexicon (USGS Bull. 896, p. 1302).
- Usage in publication:
-
- Marjum limestone
- Modifications:
-
- Revised
- Dominant lithology:
-
- Limestone
- Shale
- AAPG geologic province:
-
- Great Basin province
Summary:
Pg. 1129-1132, 1141 (fig. 5), 1147. Marjum limestone. Thickness emended section 1,530 feet [= 448 feet more than Walcott's Marjum]. Overlies Wheeler shale; underlies Weeks limestone. [Age is Middle Cambrian (Albertan).] Middle-Upper Cambrian boundary lies at base of Weeks.
Type locality (emended): on spur which forms west side of Rainbow Valley [now Marjum Canyon], House Range, [Notch Peak 7.5-min quadrangle, Millard Co.], western UT.
Source: US geologic names lexicon (USGS Bull. 1200, p. 2383).
- Usage in publication:
-
- Marjum Formation
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Great Basin province
Summary:
Is a valid map unit only in central House Range, UT, Great Basin province. Name should not be extended into other areas. Correlates with Pierson Cove Formation (new) and part of Trippe Limestone (revised) in Fish Springs, northern and southern House and Cricket Ranges, west-central UT. Overlies Wheeler Shale; underlies Weeks Limestone. Middle Cambrian age.
Source: GNU records (USGS DDS-6; Denver 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 ([ ]).