https://ilstratwiki.web.illinois.edu/index.php?title=Historical:Springfield_Coal_Member&feed=atom&action=historyHistorical:Springfield Coal Member - Revision history2024-03-29T10:37:31ZRevision history for this page on the wikiMediaWiki 1.38.4https://ilstratwiki.web.illinois.edu/index.php?title=Historical:Springfield_Coal_Member&diff=19552&oldid=prevJennifer.Obrad at 22:44, 18 February 20212021-02-18T22:44:46Z<p></p>
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</table>Jennifer.Obradhttps://ilstratwiki.web.illinois.edu/index.php?title=Historical:Springfield_Coal_Member&diff=19551&oldid=prevJennifer.Obrad: IlLex moved page Historical:Springfield and Harrisburg Coal Members to Historical:Springfield Coal Member without leaving a redirect2021-02-18T22:43:40Z<p>IlLex moved page <a href="/index.php?title=Historical:Springfield_and_Harrisburg_Coal_Members&action=edit&redlink=1" class="new" title="Historical:Springfield and Harrisburg Coal Members (page does not exist)">Historical:Springfield and Harrisburg Coal Members</a> to <a href="/wiki/Historical:Springfield_Coal_Member" title="Historical:Springfield Coal Member">Historical:Springfield Coal Member</a> without leaving a redirect</p>
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|category5=Desmoinesian Series<br />
|category6=Carbondale Formation<br />
|category7=Coal<br />
}}<br />
==Authors==<br />
M. E. Hopkins and J. A. Simon<br />
<br />
==Name Origin==<br />
The Springfield (No. 5) Coal Member and the Harrisburg (No. 5) Coal Member of the Carbondale Formation are the same unit, but separate names are retained because of long-established usage-- "Springfield" in central, northern, and western Illinois and "Harrisburg" in southern and eastern Illinois. The term "No. 5" was first applied to this coal by Worthen (1870, p. 93) in his description of the geology of Fulton County. It was later applied to the coal mined in the Springfield, Sangamon County, district (Shaw and Savage, 1913, p. 3). The Harrisburg (No. 5) Coal Member (Shaw and Savage, 1912, p. 7) is named for Harrisburg, Saline County, where it is mined.<br />
<br />
==Type Section==<br />
Underground exposures in coal mines in Springfield were made the type section (16, 16N-4W) (Wanless, 1956, p. 10).<br />
<br />
==Correlation==<br />
The No. 5 Coal is the most important coal in Indiana, where it is now called the Springfield Coal Member (V), and in western Kentucky, where it is called the No. 9 (Mulford) coal. It is correlated with the Summit coal in Missouri.<br />
<br />
==Extent and Thickness==<br />
It is commonly 4-8 feet thick (fig P-12). The coal is absent along the northern margin of the Pennsylvanian rocks.<br />
<center><br />
{| class="wikitable" style="text-align: center;"<br />
|-<br />
|<gallery caption="" widths=250px heights=250px perrow=4><br />
Figure P-12.jpg|{{file:Figure P-12.jpg}}<br />
</gallery><br />
|}<br />
</center><br />
<br />
==Description==<br />
The No. 5 Coal is second only to the Herrin (No. 6) Coal in commercial importance in Illinois. In southwestern Illinois it has been strip mined in a few pits where the Herrin is the principal coal. It is normally overlain by a black fissile shale, but in southeastern Illinois, in a belt several miles wide that trends southwestward, the coal is thick and it is overlain by the gray silty Dykersburg Shale. In that belt the coal is more commonly split by shale partings, and contains less pyrite than where it is overlain by the black fissile shale (Hopkins, 1968).<br />
<br />
==References==<br />
HOPKINS, M. E., 1968, Harrisburg (No. 5) Coal reserves of southeastern Illinois: Illinois State Geological Survey Circular 431, 25 p.<br><br />
SHAW, E. W., and T. E. SAVAGE, 1912, Murphysboro and Herrin Quadrangles: USGS Geological Atlas Folio 185, 15 p.<br><br />
SHAW, E. W., and T. E. SAVAGE, 1913, Tallula and Springfield Quadrangles: USGS Geological Atlas Folio 188, 12 p.<br><br />
WANLESS, H. R., 1956, Classification of the Pennsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br><br />
WORTHEN, A. H., 1870, Geology and paleontology: Geological Survey of Illinois, v. 4, 508 p.<br />
{{Codes <br />
| membercode = 2790<br />
| geo_unit = Pc-s<br />
| geo_image =<br />
}}</div>Jennifer.Obrad