Pages authored by John B. Droste:

1. Rock Unit Names / Muscatatuck Group
   Type and reference sections and use of name: The Muscatatuck Group was named for its many exposures along the forks and tributaries of the Muscatatuck River particularly in Jefferson and Jennings Counties, southeastern Indiana (Shaver, 1974a, p. 3-6).
2. Rock Unit Names / New Harmony Group
   Type section and use of name: The name New Harmony Group was given by Becker and Droste (1978, p. 4) to the subsurface Lower Devonian rocks that are penetrated between the depths of 4,987 and 5,478 feet (4,996 and 5,480 feet on electric log) (1,521 and 1,671 m) in the Superior No. C-17 Ford well, White County, Ill.
3. Rock Unit Names / Potsdam Supergroup
   Type locality and use of name: The Potsdam Sandstone was named by Emmons in 1838 (p. 214-217, 230) for Potsdam, St. Lawrence County, N.Y. It was then considered to consist of sandstones lying above primary (Precambrian) rocks.
4. Rock Unit Names / Tioga Bentonite Bed
   and Detroit River Formation,Type area and reference section and use of name in Indiana: The altered volcanic ash that was noted by Fettke (1931, p. 8) in the Tioga Gas Field of Pennsylvania was named the Tioga Bentonite by Ebright, Fettke, and Ingham (1949, p. 10).
5. Rock Unit Names / Waldron Shale, Formation, Member
   Type section and history of name: The name Waldron Shale was used by N. M. Elrod (1883, p. 111) to replace the earlier designations Waldron beds and Waldron fossil bed that were used for the thinly interbedded clay, shale, and limestone overlying the quarry stone (presently known as the Laurel Member of the Salamonie Dolomite)...
6. Ancell Group / St. Peter Sandstone
   Type section and use of name: The St. Peter Sandstone was named by Owen (1847, p. 169-170) for the exposures along the river then called St. Peter (now the Minnesota River) in southern Minnesota.
7. Bainbridge Group / Bailey Limestone
   Type area and use of name in the Illinois Basin: The Bailey Limestone was named for exposures of argillaceous limestones and shales along the Mississippi River between Bailey's Landing and Red Rock Landing in Perry County, Mo. (E. O. Ulrich as published by Buckley and Buehler, 1904, p. 110).
8. Black River Group / Plattin Formation
   Type locality and history of name: According to reviews by Templeton and Willman (1963) and Buckley and Buehler (1904, p. 111), the name Plattin was originally proposed, but not published, by E. O. Ulrich for exposures along Plattin Creek, Jefferson County, Mo.
9. Buffalo Wallow Group / Grove Church Shale
   Type locality: The Grove Church Shale was named by Swann (1963) for Cedar Grove Church, Johnson County, Ill. Sixteen feet (4.9 m) of shale and interbedded limestone are exposed in a road cut and in gullies about 1 mile (1.6 km) east of Lick Creek, Ill. No other surface exposures have been reported.
10. Jeffersonville Limestone / Dutch Creek Sandstone Member
    Type locality and use of name: The Dutch Creek Sandstone was named by Savage (1920, p. 175) for exposures along Dutch Creek in central Union County, southern Illinois.
11. Jeffersonville Limestone / Geneva Dolomite Member
    Type locality, reference sections, and use of name: The name Geneva Limestone was first used by Collett (1882, p. 63, 81, 82) for exposures of a buff dolomitic limestone exposed along the Flat Rock River near Geneva, Shelby County, Ind. The same rocks were later called the Shelby Bed (Foerste, 1898, p. 234-235).
12. Jeffersonville Limestone / Vernon Fork Member
    Type area, principal reference section, and use of name: The name Vernon Fork Member was given by Droste and Shaver (1975a, p. 404-406) to the rocks often called the laminated beds. Laminated Zone, chalk beds, or fine-grained dolomite of the Jeffersonville Limestone.
13. Knox Supergroup / Potosi Dolomite
    Type locality and use of name: The Potosi Dolomite was named for cherty carbonate rocks exposed at Potosi, Washington County, Mo. (Winslow, 1894, p. 331, 351, 355).
14. Knox Supergroup / Prairie du Chien Group
    Type locality and use of name: The term Prairie du Chien Formation was introduced by Bain (1906, p. 18) to replace “Lower Magnesian” of earlier reports that referred to exposures near Prairie du Chien, Crawford County, Wis., where this unit consists of as much as 300 feet (91 m) of dolomite and sandstone.
15. Muscatatuck Group / North Vernon Limestone
    Type locality and reference sections: The North Vernon Limestone was named (Borden, 1876, p. 148, 160) for North Vernon, Jennings County, Ind., where blue and gray limestone was exposed below the New Albany Shale and above the Jeffersonville Limestone (then called the Corniferous Limestone) in quarry exposures.
16. Muscatatuck Group / Traverse Formation
    Type area and use of name: A sequence of thick-bedded buff granular magnesian limestones exposed around Little Traverse Bay in the northwestern part of the Lower Peninsula of Michigan was named the Little Traverse Group by N. H. Winchell (1871, p. 26-33).
17. Detroit River Formation / Cranberry Marsh Member
    Type and reference section: The Cranberry Marsh Member was named by Doheny, Droste, and Shaver (1975, p. 32-33) for pertinent rocks that were cored in the Northern Public Service Co. August Taelman No. 1 well, eastern LaPorte County, Ind. (NE¼ sec.
18. Detroit River Formation / Milan Center Dolomite Member
    Type and reference sections: The Milan Center Dolomite Member was named for the middle Detroit River dolomite that is exposed in the Woodburn Quarry of May Stone and Sand, lnc., and that was cut in Indiana Geological Survey drill hole 188, eastern Allen County, Ind. (NE¼ sec. 23, T. 31 N., R. 14 E.).
19. North Vernon Limestone / Beechwood Member
    Type locality and reference sections: The name Beechwood Limestone Member was given by Butts (1915, p. 120) to several feet of gray thick-bedded coarse-grained crinoidal limestone exposed near Beechwood Station east of Louisville, Jefferson County, Ky.
20. North Vernon Limestone / Silver Creek Member
    Type locality, reference section, synonyms, and use of name: The name Silver Creek Hydraulic Limestone was given (Siebenthal, 1901b, p. 345-346) to gray dense massive argillaceous dolomitic limestone exposed along Silver Creek northwest of the Falls of the Ohio, Clark County, Ind.
21. New Harmony Group / Backbone Limestone
    Type section and use of name in Indiana: The Backbone Limestone was named for the ridge called the Devil's Backbone Ridge along the Mississippi River north of Grand Tower, Jackson County, southwestern Illinois (Savage, 1920, p. 173). There in the type section in a quarry (SE¼SW¼SW¼ sec.
22. New Harmony Group / Grassy Knob Chert
    Type locality, identification problems, and use of name in Indiana: The Grassy Knob Chert was named (Savage, 1925, p. 139) for Grassy Knob, a prominent high area on the Mississippi River bluffs in Jackson County, southwestern Illinois, where more than 100 feet (30 m) of chert and sandy and siliceous limestone were exposed.
23. Potsdam Supergroup / Mount Simon Sandstone
    Type locality and use of name: In a provisional classification given by Walcott (1914, p. 354), the Mount Simon Sandstone was credited to a manuscript by E. O. Ulrich. General consensus indicates that the name is taken from an escarpment called Mount Simon near Eau Claire, Eau Claire County, Wis.
24. Pleasant Mills Formation / Limberlost Dolomite Member
    Type and reference sections and use of name: The Limberlost Dolomite Member was originally named as a formation (Droste and Shaver, 1976, p. 4) for exposures of dolomite in the Limberlost area (for example, including Limberlost Church and Limberlost Creek) near Geneva in Adams and Jay Counties, Ind.
25. Wabash Formation / Kenneth Limestone Member
    Type section and use of name: The Kenneth Limestone Member was named as a formation by Cumings and Shrock (1927, p. 77) for about 30 feet (9 m) of light-colored dense to fine-grained bedded to massive cherry lime-stone that is typically exposed in an abandoned France Stone Co. quarry near Kenneth, Cass County, Ind.
26. Wabash Formation / Kokomo Limestone Member
    Type and reference sections, synonyms, and use of name: The Kokomo Limestone Member was considered by Cumings and Shrock (1927, p. 76) as a formation and was named for about 50 feet (15 m) of color-banded, thinly laminated eurypterid-bearing Waterlime Beds of Foerste (1904b, p. 33) that were exposed in the Markland Avenue Quarry in...
27. Wabash Formation / Mississinewa Shale Member
    Type area and history of name: The Mississinewa Shale Member, originally having formation rank, was named by Cumings and Shrock (1927, p. 72) for shaly weathering argillaceous silty dolomite and dolomitic siltstone, more than 50 feet (15 m) thick in single exposure, along the Mississinewa River between Marion, Grant County, and the...