Difference between revisions of "Kerton Creek coal bed"

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'''The Kerton Creek coal is demoted from a formal member to an informal name and is considered to be the [[Survant Coal Member]]'''.<br>
 
{{Tree
 
{{Tree
 
|category1=Paleozoic Erathem
 
|category1=Paleozoic Erathem
 
|category2=Pennsylvanian Subsystem
 
|category2=Pennsylvanian Subsystem
 
|category3=Absaroka Sequence
 
|category3=Absaroka Sequence
|category4=Kewanee Group
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|category4=Desmoinesian Series
|category5=Desmoinesian Series
+
|category5=Carbondale Formation
|category6=Carbondale Formation
+
|category6=Coal
|tree1=Kewanee Group
+
|tree1=Carbondale Formation
|tree2=Carbondale Formation
+
|tree2=Kerton Creek coal bed
|tree3=Kerton Creek Coal Member
 
 
|tree21=Paleozoic Erathem
 
|tree21=Paleozoic Erathem
 
|tree22=Pennsylvanian Subsystem
 
|tree22=Pennsylvanian Subsystem
Line 16: Line 16:
 
}}
 
}}
 
==Primary source==
 
==Primary source==
Willman, H. B., Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, and Jack A. Simon, 1975, Handbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
+
Nelson, W.J., 2020, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey Bulletin (in press). <br>
 +
Edited and figures drafted by Jennifer M. Obrad.
  
 
==Contributing author&#40;s&#41;==
 
==Contributing author&#40;s&#41;==
M. E. Hopkins and J. A. Simon
+
W.J. Nelson
  
 
==Name==
 
==Name==
  
 
===Original description===
 
===Original description===
The Kerton Creek Coal Member of the Carbondale Formation (Ekblaw, 1931 , p. 391).
+
In an unpublished manuscript, Searight (1925–1927) described the “Kerton Creek beds” in southern Fulton County, Illinois. First to mention the Kerton Creek coal in print was Ekblaw (1931), who presented no details. Wanless (1957) made the first detailed description of the Kerton Creek Coal; Kosanke et al. (1960) formalized the unit as a member.  
  
 
===Derivation===
 
===Derivation===
Named for Kerton Creek in Fulton County.
+
The name refers to the stream along which most of the exposures were found.
  
 
===Other names===
 
===Other names===
 
+
None.
===History&#47;background===
 
  
 
==Type section==
 
==Type section==
  
 
===Type location===
 
===Type location===
The type section is exposed along Kerton Creek (NE NE 15, 3N-2E) (Wanless, 1956, p. 10; 1957, p. 98, 189).
+
The type section consists of road cuts, stream banks, and mine openings near the center of the NE¼ sec. 15, T 3 N, R 2 E, Fulton County, on the Astoria 7.5' quadrangle.  
  
 
===Type author&#40;s&#41;===
 
===Type author&#40;s&#41;===
 +
Wanless (1957, geologic section 1, p. 189).
  
 
===Type status===
 
===Type status===
 +
Unknown.
  
 
==Reference section==
 
==Reference section==
 
+
None.
===Reference location===
 
 
 
===Reference author&#40;s&#41;===
 
 
 
===Reference status===
 
  
 
==Stratigraphic relationships==
 
==Stratigraphic relationships==
The Summum (No. 4) Coal, which also thickens in the same unfilled channels as the Kerton Creek, overlies the Kerton Creek by only a few feet. The Kerton Creek does not have an underclay but rests directly on the Pleasantview Sandstone.
+
[[file:Penn_carbondale_4-38.jpg|250px|{{file:Penn_carbondale_4-38.jpg}}|thumb]]
 +
[[file:Penn_carbondale_4-39.jpg|250px|{{file:Penn_carbondale_4-39.jpg}}|thumb]]
 +
Like the Cardiff coal bed and the Roodhouse coal bed, the Kerton Creek is a highly localized deposit confined to channels. As Wanless (1957, p. 98) wrote, “Not even a coaly streak is found to mark its position outside the limited areas where it is present, all of which are in areas of channel deposits of the Pleasantview Sandstone” (Figure 4-38). Wherever the Kerton Creek is present, the overlying Houchin Creek Coal occupies a “stacked” trough and thickens from its normal ≤0.5 ft (15 cm) to 4 ft (120 cm) or more. Smith and Berggren (1963) identified several localities in Fulton and Knox County where this relationship exists. Thus, like Wanless (1952), I interpret the Kerton Creek coal to be Survant Coal that developed as peat in abandoned channel(s). Being redundant, the name “Kerton Creek Coal Member” is dropped from formal usage, although “Kerton Creek coal bed” may be used informally with reference to the type area. The presence of a middle clastic layer at some localities (Figure 4-39) suggests that both Wheeler and Bevier coals may be present.  
  
 
==Extent and thickness==
 
==Extent and thickness==
This coal is recognized only in Fulton County, where it occurs in channels that had been only partially filled with the underlying Pleasantview Sandstone. The coal is up to 5 feet thick.
+
Kerton Creek coal has been reported at several localities in Fulton County, Illinois, and it may occur in Knox County (Wanless 1957; Smith and Berggren 1963). All these deposits are highly localized. The coal dips into troughs 10 to 20 ft (3 to 6 m) deep and attains a maximum thickness of about 5 ft (1.5 m). Not enough information is at hand to determine channel trends or dimensions.  
  
 
==Lithology==
 
==Lithology==
This coal is either canneloid or quite high in ash.
+
The coal is commonly shaly and locally “canneloid.” At the type locality, a claystone layer about 1 ft (0.3 m) thick is near the middle of the seam (Figure 4-39). Wanless (1957) stated that the Kerton Creek has no underclay and is overlain by either “gray shale containing plant leaves” or by “black sheety shale with a limited marine fauna.
  
 
==Core&#40;s&#41;==
 
==Core&#40;s&#41;==
Line 64: Line 63:
  
 
==Contacts==
 
==Contacts==
 +
Little information has been published, but two sections in Wanless (1957) suggest sharp lower and upper contacts.
  
 
==Well log characteristics==
 
==Well log characteristics==
 +
No geophysical log showing the Kerton Creek coal is known.
  
 
==Fossils==
 
==Fossils==
 +
As mentioned above, shale overlying the Kerton Creek contains fossil leaves and an unspecified sparse marine fauna.
  
 
==Age and correlation==
 
==Age and correlation==
It is believed to correlate with the Roodhouse Coal of Greene County.
+
The Kerton Creek coal is herein interpreted to be the [[Survant Coal Member]]. It may include either the Wheeler and Bevier Coal Beds, or both.
  
 
==Environments of deposition==
 
==Environments of deposition==
 +
The Kerton Creek originated as peat that filled abandoned channels in the late stage of valley filling. Subsequent compaction of this peat maintained the trough that was filled with overthickened Houchin Creek peat.
  
 
==Economic importance==
 
==Economic importance==
 
+
Mines that worked this deposit were small, local affairs. The extent of the deposit is unknown but is probably small.
 
==Remarks==
 
==Remarks==
  
 
==References==
 
==References==
EKBLAW, S. E., 1931, Channel deposits of the Pleasantview Sandstone in western Illinois: Illinois Academy of Science Transactions, v. 23, p. 391-399.<br>
+
*Ekblaw, S.E., 1931, Channel deposits of the Pleasantview Sandstone in western Illinois: Illinois State Academy of Science Transactions, v. 23, p. 391–399.<br>
WANLESS, H. R., 1956, Classification of the Pennsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>
+
*Kosanke, R.M., J.A. Simon, H.R. Wanless, and H.B. Willman, 1960, Classification of the Pennsylvanian strata of Illinois: Illinois State Geological Survey, Report of Investigations 214, 84 p. and 1 pl.<br>
WANLESS, H. R., 1957, Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont Quadrangles: Illinois State Geological Survey Bulletin 82, 233 p.
+
*Searight, W.V., 1925–1927, Geology and mineral resources of Beardstown Quadrangle: Illinois State Geological Survey, unpublished manuscript, 282 p. plus illustrations.<br>
 +
*Smith, W.H., and D.J. Berggren, 1963, Strippable coal reserves of Illinois, Part 5A, Fulton, Henry, Knox, Peoria, Stark, Tazewell, and parts of Bureau, Marshall, Mercer, and Warren Counties: Illinois State Geological Survey, Circular 348, 59 p., 4 pls.<br>
 +
*Wanless, H.R., 1952, Studies of field relations of coal beds, in Second conference on the origin and constitution of coal, June 18–20, 1952, Crystal Cliffs, Nova Scotia: Nova Scotia Department of Mines, p. 148–180.<br>
 +
*Wanless, H.R., 1957, Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont Quadrangles: Illinois State Geological Survey, Bulletin 82, 233 p.<br>
  
 
{{Codes
 
{{Codes

Latest revision as of 21:10, 15 February 2021

The Kerton Creek coal is demoted from a formal member to an informal name and is considered to be the Survant Coal Member.
Lithostratigraphy: Carbondale Formation >>Kerton Creek coal bed
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence

Primary source

Nelson, W.J., 2020, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey Bulletin (in press).
Edited and figures drafted by Jennifer M. Obrad.

Contributing author(s)

W.J. Nelson

Name

Original description

In an unpublished manuscript, Searight (1925–1927) described the “Kerton Creek beds” in southern Fulton County, Illinois. First to mention the Kerton Creek coal in print was Ekblaw (1931), who presented no details. Wanless (1957) made the first detailed description of the Kerton Creek Coal; Kosanke et al. (1960) formalized the unit as a member.

Derivation

The name refers to the stream along which most of the exposures were found.

Other names

None.

Type section

Type location

The type section consists of road cuts, stream banks, and mine openings near the center of the NE¼ sec. 15, T 3 N, R 2 E, Fulton County, on the Astoria 7.5' quadrangle.

Type author(s)

Wanless (1957, geologic section 1, p. 189).

Type status

Unknown.

Reference section

None.

Stratigraphic relationships

Figure 4-38. Block diagram showing stratigraphic relationships of the lenticular Kerton Creek and Summum (now Houchin Creek) coals to adjacent strata and the channel of Pleasantview sandstone cutting to Colchester Coal. From Wanless (1952, figure 3). Used with permission of the Nova Scotia Geological Survey.
Figure 4-39. Drawing showing the Kerton Creek Coal with middle clastic layer, which may be the division between the Wheeler and Bevier Coals. From Searight (unpublished manuscript, 1925-1927, figure 22).

Like the Cardiff coal bed and the Roodhouse coal bed, the Kerton Creek is a highly localized deposit confined to channels. As Wanless (1957, p. 98) wrote, “Not even a coaly streak is found to mark its position outside the limited areas where it is present, all of which are in areas of channel deposits of the Pleasantview Sandstone” (Figure 4-38). Wherever the Kerton Creek is present, the overlying Houchin Creek Coal occupies a “stacked” trough and thickens from its normal ≤0.5 ft (15 cm) to 4 ft (120 cm) or more. Smith and Berggren (1963) identified several localities in Fulton and Knox County where this relationship exists. Thus, like Wanless (1952), I interpret the Kerton Creek coal to be Survant Coal that developed as peat in abandoned channel(s). Being redundant, the name “Kerton Creek Coal Member” is dropped from formal usage, although “Kerton Creek coal bed” may be used informally with reference to the type area. The presence of a middle clastic layer at some localities (Figure 4-39) suggests that both Wheeler and Bevier coals may be present.

Extent and thickness

Kerton Creek coal has been reported at several localities in Fulton County, Illinois, and it may occur in Knox County (Wanless 1957; Smith and Berggren 1963). All these deposits are highly localized. The coal dips into troughs 10 to 20 ft (3 to 6 m) deep and attains a maximum thickness of about 5 ft (1.5 m). Not enough information is at hand to determine channel trends or dimensions.

Lithology

The coal is commonly shaly and locally “canneloid.” At the type locality, a claystone layer about 1 ft (0.3 m) thick is near the middle of the seam (Figure 4-39). Wanless (1957) stated that the Kerton Creek has no underclay and is overlain by either “gray shale containing plant leaves” or by “black sheety shale with a limited marine fauna.”

Core(s)

Photograph(s)

Contacts

Little information has been published, but two sections in Wanless (1957) suggest sharp lower and upper contacts.

Well log characteristics

No geophysical log showing the Kerton Creek coal is known.

Fossils

As mentioned above, shale overlying the Kerton Creek contains fossil leaves and an unspecified sparse marine fauna.

Age and correlation

The Kerton Creek coal is herein interpreted to be the Survant Coal Member. It may include either the Wheeler and Bevier Coal Beds, or both.

Environments of deposition

The Kerton Creek originated as peat that filled abandoned channels in the late stage of valley filling. Subsequent compaction of this peat maintained the trough that was filled with overthickened Houchin Creek peat.

Economic importance

Mines that worked this deposit were small, local affairs. The extent of the deposit is unknown but is probably small.

Remarks

References

  • Ekblaw, S.E., 1931, Channel deposits of the Pleasantview Sandstone in western Illinois: Illinois State Academy of Science Transactions, v. 23, p. 391–399.
  • Kosanke, R.M., J.A. Simon, H.R. Wanless, and H.B. Willman, 1960, Classification of the Pennsylvanian strata of Illinois: Illinois State Geological Survey, Report of Investigations 214, 84 p. and 1 pl.
  • Searight, W.V., 1925–1927, Geology and mineral resources of Beardstown Quadrangle: Illinois State Geological Survey, unpublished manuscript, 282 p. plus illustrations.
  • Smith, W.H., and D.J. Berggren, 1963, Strippable coal reserves of Illinois, Part 5A, Fulton, Henry, Knox, Peoria, Stark, Tazewell, and parts of Bureau, Marshall, Mercer, and Warren Counties: Illinois State Geological Survey, Circular 348, 59 p., 4 pls.
  • Wanless, H.R., 1952, Studies of field relations of coal beds, in Second conference on the origin and constitution of coal, June 18–20, 1952, Crystal Cliffs, Nova Scotia: Nova Scotia Department of Mines, p. 148–180.
  • Wanless, H.R., 1957, Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont Quadrangles: Illinois State Geological Survey, Bulletin 82, 233 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation
2870
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