Bernadotte sandstone. Coarse-grained massive sandstone at base of Carbondale formation [as he proposed restricting Carbondale] in Fulton Co. Fills erosion channel in Pottsville formation. Age is Pennsylvanian.
[Origin of name not stated, but probably town of Bernadotte, Fulton Co., IL.]
Source: US geologic names lexicon (USGS Bull. 896, p. 168-169).
Pg. 804. Bernadotte sandstone in Pottsville formation. Showed top of Bernadotte sandstone lying 50+/- feet below coal No. 2 and as cutting out beds down to and into coal No. 1. Recognized in Fulton Co., central western Illinois. Age is Pennsylvanian.
Source: US geologic names lexicon (USGS Bull. 896, p. 168-169).
Bernadotte sandstone in Pottsville formation. In places cuts out underlying beds down to coal No. 1. Recognized in Fulton Co., central western Illinois. Age is Pennsylvanian.
Source: US geologic names lexicon (USGS Bull. 896, p. 168-169).
Pg. 50 (fig. 22), 70-72, 203. Bernadotte sandstone of Tradewater group. In original description, Savage correlated this bed with massive sandstone that terminates outcrop of No. 1 coal and Seville limestone at type outcrop of Seville cyclothem. At south end of this cyclothem, sandstone thickens to about 16 feet and rests directly on a coal. Savage believed this was No. 1 coal and considered Seville limestone cut out by sandstone. Outcrops now available show that No. 1 coal and Seville limestone thin out as they rise above sandstone and that coal that underlies sandstone in Pope Creek is Tarter coal. Bernadotte is older than No. 1 coal rather than younger. Occurs at base of Seville cyclothem. Age is Pennsylvanian. Type outcrop given.
Type section: road and ravine just southwest of Bernadotte, in SW/4 sec. 19, T. 5 N., R. 2 E., Vermont quadrangle, Fulton Co., northern IL.
Source: US geologic names lexicon (USGS Bull. 1200, p. 312).
Pg. 31, 45 (table 1), 63, pl. 1. Bernadotte sandstone member of Abbott formation (new) of McCormick group (new). Recognized in northern and western Illinois. Thickness about 16 inches. Occurs above Pope Creek coal member (new) of Abbott and below Rock Island (No. 1) coal member of Spoon formation (new). Age is Pennsylvanian. Report presents new rock-stratigraphic classification of Pennsylvanian strata in Illinois. Cyclical classification retained but is entirely independent of rock-stratigraphic classification.
Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 312).
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