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The Falls, circa 1929. The area is located at the Falls of the Ohio, which was the only navigational barrier on the river in earlier times. The falls were a series of rapids formed by the relatively recent erosion of the Ohio River operating on 386-million-year-old Devonian hard limestone rock shelves.
Fossil formations (Devonian Jeffersonville Limestone) found along the shores of the Ohio River. View of the fossil bed from the overlook. The park includes an interpretive center open to the public. In 1990, the Indiana state government hired Terry Chase, a well-established exhibit developer, to design the center's displays.
The Ohio River at Cairo is 281,500 cu ft/s (7,960 m 3 /s); [1] and the Mississippi River at Thebes, Illinois, which is upstream of the confluence, is 208,200 cu ft/s (5,897 m 3 /s). [66] The Ohio River flow is greater than that of the Mississippi River, so hydrologically the Ohio River is the main stream of the river system.
Pepper, et al., hypothesized that the river flowed first into the Ohio basin before switching course to the Michigan basin, thus the Michigan Berea Sandstone would be slightly younger. [14] There is a downwarp in the Cincinnati arch, called the Ontario sag, that if it was present at the formation of Berea Sandstone, could mean that it formed a ...
The Indian Head Rock is an eight-ton sandstone boulder, which had rested at the bottom of the Ohio River, [1] until September 2007 when it was retrieved by a group of local divers, led by amateur historian Steve Shaffer [2] of Ironton, Ohio. The recovery of the perennially submerged rock, which was the subject of local lore since the 1800s, was ...
The local Facebook group HVL Rocks has members painting and hiding rocks. They have been found all across the U.S. and even overseas.
In 1912, farmer Craig Crecelius found the stone artifact in a field near the Ohio River in Brandenburg, Kentucky. The oolite stone measures 29 inches (74 cm) long by 15.5 inches (39 cm) wide and varies in thickness from 1 to 3 inches (2.5 to 7.6 cm). [2] For more than 50 years, Crecelius displayed the stone at local fairs.
The Mississippian Borden Group (sometimes Borden Formation) is a mapped bedrock unit in Kentucky, Indiana, Illinois, Ohio, West Virginia, [7] and Tennessee.It has many members, which has led some geologists to consider it a group (for example in Indiana [8]) rather than a formation (for example in Kentucky [1] [4]).