- Usage in publication:
-
- Highland Mills member
- Modifications:
-
- Original reference
- Dominant lithology:
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- Sandstone
- Shale
- AAPG geologic province:
-
- Appalachian basin
Summary:
Pg. 728, 731 (fig. 2), 732-733. Highland Mills member of Esopus formation. Name applied to strata that overlie Connelly conglomerate and grade up into middle member (unnamed) of Esopus formation. Consists of interbedded yellow to gray sandstone and dark-gray shale. Sandstone beds thicken and thin rapidly and are not continuous along strike. Basal bed is layer of dark-bluish-gray paper-thin shale which makes abrupt contacts with Connelly conglomerate below and with sandstone above. Fossiliferous. Thickness about 50 feet. Age is Early Devonian.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1759).
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 ([ ]).