GEOCHEMISTRY AND ORGANIC PETROGRAPHY OF THE ANNA SHALE (PENNSYLVANIAN) AND THE OCCURENCE OF PYRITE “SUNS” IN SOUTHWESTERN ILLINOIS
The Anna Shale (Pennsylvanian) is an organic-rich, marine black shale that commonly overlies the Herrin (No. 6) Coal of the Carbondale Formation, Illinois Basin. Disk-shaped iron sulfide concretions, called pyrite suns, which are commonly up to 10 cm or more across are found in the lowest few centim...
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| Format: | Others |
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OpenSIUC
2019
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| Online Access: | https://opensiuc.lib.siu.edu/theses/2579 https://opensiuc.lib.siu.edu/cgi/viewcontent.cgi?article=3593&context=theses |