- Usage in publication:
-
- Cardiff quartz conglomerate*
- Modifications:
-
- Named
- Dominant lithology:
-
- Conglomerate
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Named for Cardiff, Harford Co., northeastern MD. Present in strongly synclinal basin with greatest depth in vicinity of Cardiff, MD. Consists of somewhat intermittent, poorly developed, quartzitic conglomerate. Underlies Peach Bottom slates; overlies Wissahickon phyllite, mica schist, and mica gneiss.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Cardiff Metaconglomerate*
- Modifications:
-
- Revised
- Age modified
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Cardiff Metaconglomerate designated a formation of Glenarm Series. Underlies Wissahickon Formation (quartzite facies); overlies Peach Bottom Slate. Includes rocks previously assigned to metaconglomerate lithofacies (here abandoned) of Wissahickon (Southwick and Fisher, 1967). Age of Cardiff changed from Ordovician(?) to latest Precambrian.
Source: GNU records (USGS DDS-6; Reston 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 ([ ]).