Environments of deposition—coal balls, cuticular shale, and gray-shale floras in Fountain and Parke Counties, Indiana (1982)
INTRODUCTION: In the Illinois Basin (western parts of Indiana and Kentucky and most of Illinois) 99 percent of the identified bituminous coal resources occur in the Middle Pennsylvanian Series (Phillips and others, 1980). During deposition of this stratigraphic interval there was a marked rise and fall in the extent of successive coal-swamp environments because of changes in rainfall and freshwater availability as well as in local environmental factors. In early Middle Pennsylvanian time swamp environments were varied; they were usually small scale, and many were discontinuous in distribution. In western Indiana two such areas of coal deposits were comparatively studied to interrelate environments of deposition, plant assemblages with their ecologic implications, and coal qualities. The two areas were chosen because the fossil plants of exceptional preservational modes and quality associated with coal were abundant and because the deposits were stratigraphically and geographically close enough to provide valid paleobotanic comparisons according to differences in environments of growth and deposition. The exposed coals of the two areas thin, thicken, or pinch out over relatively short distances within the mines or other exposures, and therefore their stratigraphic determinations are uncertain to some degree.
Eggert, D. L., Phillips, T. L., DiMichele, W. A., Johnson, P. R., Peppers, R. A. 1982, Environments of deposition—coal balls, cuticular shale, and gray-shale floras in Fountain and Parke Counties, Indiana: Indiana Geological Survey Special Report 30, 43 p., 12 fig., 6 pl.
You may also like:
Can't find what you're looking for? Feel free to contact us directly:
Publication Sales Office
Indiana Geological and Water Survey
611 North Walnut Grove
Bloomington, IN 47405-2208
IGS Return Policy
All sales are final. Materials may not be returned after they have been accepted by the customer. Any discrepencies in mail orders must be reported to IGWS within 10 days of receipt of order.
The Indiana Geological and Water Survey will refund the purchase price and sales tax of products if returned with the original sales receipt within 10 days of receipt of order. Refunds will be issued with the same method of payment as indicated on the original receipt except for cash purchases, which will be refunded by check. Items must be returned in the same condition as purchased. Refunds on digital products and services are not allowed, except for defective media such as CD-ROMs, flash drives, and so on. The customer is responsible for paying shipping costs to return items.