Early Pennsylvanian paleotopography and depositional environments, Rock Island County, Illinois earlypennsylvani18lear Year: 1985 System Group Formation Pi Composite Section 7W ^kl. MC CORMICK CASEYVILLE rTTT7 1 ABBOTT Group Formation Composite Section cr 3 O co o O Q 3 rr SILURIAN DEVONIAN System NIAGARAN MIDDLE UPPER Series MARCUS RACINE WAPSIPINICON CEDAR VALLEY rTTT !SWEETLAND. _\QREEK ForiTiation WW I . I • I I 1 fc j m \& \~ hn hft|r- -rt-n- llllhil Composite section Figure 4. Composite section of Pennsylvanian, Devonian and Upper Silurian strata in the Rock Island County area. Penn
Early Pennsylvanian paleotopography and depositional environments, Rock Island County, Illinois earlypennsylvani18lear Year: 1985 System Group Formation Pi Composite Section 7W ^kl. MC CORMICK CASEYVILLE rTTT7 1 ABBOTT Group Formation Composite Section cr 3 O co o O Q 3 rr SILURIAN DEVONIAN System NIAGARAN MIDDLE UPPER Series MARCUS RACINE WAPSIPINICON CEDAR VALLEY rTTT !SWEETLAND. _\QREEK ForiTiation WW I . I • I I 1 fc j m \& \~ hn hft|r- -rt-n- llllhil Composite section Figure 4. Composite section of Pennsylvanian, Devonian and Upper Silurian strata in the Rock Island County area. Pennsylvanian section from Searight and Smith, 1969.
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