Abstract The maximum chronostratigraphic range of the Tippecanoe sequence in the Illinois basin area is from Whiterockian (early Middle Ordovician) through Ulsterian (Early Devonian), a duration of approximately 95 m.y. The base of the sequence is marked by a major, cratonwide unconformity that represents a long period of erosion at the margins of the basin during late Canadian and Whiterockian time. The gap in the stratigraphic record at the unconformity appears to diminish toward the center of the basin, which is situated over the New Madrid rift complex. The upper boundary of the sequence is a major, widespread unconformity that is overlain by the Kaskaskia sequence. Within the basin, the Tippecanoe sequence consists of about 70% carbonates; in decreasing order of abundance, other major lithologies include shale, sandstone, and chert. Tippecanoe strata range in thickness from about 600 ft (180 m) in the northwestern part of the basin to 3200 ft (1000 m) in the south (Figure 2-10). In Tippecanoe rocks, hydrocarbons are produced from the Galena Group/Trenton Limestone/Calloway Creek Limestone (Upper Ordovician), the Kankakee Formation, the Moccasin Springs Formation, Brassfield Dolomite, Laurel Dolomite, Louisville Limestone, the Brownsport Formation (Silurian), and the Clear Creek and Grassy Knob limestones (Lower Devonian) (Figures 1-13, 5-1, and 6-1). Tippecanoe formations were deposited in a relatively stable tectonic setting. The formations overlie truncated and slightly deformed rocks of the Sauk sequence and, in turn, were deformed and partly truncated before being overlapped by the Kaskaskia sequence (Willman et aI., 1975). TheTippecanoe consists primarily of carbonate

Abstract The Greensburg Consolidated oil pool of central Kentucky was discovered in 1955 downdip from the depleted Campbellsville gas field. The Silurian Laurel Dolomite is the reservoir rock, and the Devonian Sellersburg Limestone and New Albany (Chattanooga) Shale are the cropping rocks. A wedge of porosity resulted from erosional beveling of the Silurian rocks, forming a stratigraphic trap with an accumulation of gas and oil beneath the Middle Devonian unconformity.

ABSTRACT This walking trip examines local and imported stones used for a wide variety of monuments, museums, skyscrapers, and other structures in downtown Indianapolis. These include Christ Church Cathedral, the Indiana War Memorial, the Indiana Statehouse, the Indiana State Museum, the Eiteljorg Museum of American Indian Art, and an assortment of skyscrapers and other buildings of interest because of the local and imported stones used in their construction. Special attention is given to the spectacular use of stone for the Indiana War Memorial, which is patterned after the tomb of Mausoleus. The origin, composition, weathering, and in some cases replacement of stone used for these varied structures built over a span of a century-and-a-half is discussed. Attention is also given to the use of faux stone, use of stone versus glass, weathering and cleaning of stone, bowing of marble, and biocolonization of building stone.