PREFACE: Quarry operators in the dimension-stone district of south-central Indiana are using a new type of saw that imparts a rough "polish" to the quarry walls. The saws are producing outcrops of the physical and biological sedimentary structures in the Salem Limestone that have never been seen before. The 3-dimensional distributions of physical sedimentary structures on the quarry walls can be mapped and architectural elements of these structures that comprise the shoal body can be defined. This "clastic" approach to the study of carbonate shoal and tidal channel deposits is yielding a more detailed view of the types of deposits that are preserved in an ancient carbonate shoal and the types of processes that formed them. Recent study of fauna and trace fossils in the Salem complement the sedimentological studies, providing the needed paleoecological constraints on the system. The field trip will examine physical and biological sedimentary structures and fauna in two quarries near Bedford, Indiana and in an outcrop between Bedford and Bloomington. Concentration will be placed on the physical characteristics of the Salem Limestone and discussions will be focused on the processes that influenced the system and paleoecological responses. The field trip has 5 leaders and will be helped along by several individuals from the Indiana Geological Survey and the Department of Geosciences of Indiana University. I hope the diversity of people conducting and helping with the trip will stimulate discussions about many aspects of the Salem Limestone in the Friday evening meeting and during the Saturday field trip. Although the trip will focus on physical sedimentology and paleoecology of the Salem along the outcrop belt, I feel that there are many other aspects of the Salem Limestone that would be of interest to the field trip participants. Short papers about the Salem are included in the back of the guidebook.

Thompson, T. A. 1990, Architectural elements and paleoecology of carbonate shoal and intershoal deposits in the Salem Limestone (Mississippian) in south-central Indiana: Indiana Geological Survey Guidebook 14, 75 p., 36 fig.

You may also like:

Keywords: field guide, Salem Limestone, Mississippian, sedimentology, paleoecology, Sanders Group, tidalite, bedform, cross bed

Can't find what you're looking for? Feel free to contact us directly:

Publication Sales Office
Indiana Geological and Water Survey
420 N. Walnut St.
Bloomington, IN 47404
812-855-7636 (phone)
812-855-2862 (fax)

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.