Search results
Results from the WOW.Com Content Network
While Lamb's analysis assumed a straight wavefront, it has been shown [8] that the same characteristic equations apply to cylindrical plate waves (i.e. waves propagating outwards from a line source, the line lying perpendicular to the plate). The difference is that whereas the "carrier" for the straight wavefront is a sinusoid, the "carrier ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
Locations of quakes magnitude 2.5 or greater in the Wabash Valley (upper right) and New Madrid (lower left) Seismic Zones. The Wabash Valley seismic zone (also known as the Wabash Valley fault system or fault zone) is a tectonic region located in the Midwestern United States, centered on the valley of the lower Wabash River, along the state line between southeastern Illinois and southwestern ...
A map showing approximate areas of various Mississippian and related cultures (c. 800-1500 CE) This is a list of Mississippian sites. The Mississippian culture was a mound-building Native American culture that flourished in what is now the Midwestern, inland-Eastern, and Southeastern United States from approximately 800 CE to 1500 CE, varying regionally. [1]
The Kincaid Mounds Historic Site (11MX2-11; 11PO2-10) [3] c. 1050–1400 CE, [4] is a Mississippian culture archaeological site located at the southern tip of present-day U.S. state of Illinois, along the Ohio River.
In the United States before 1865, a slave state was a state in which slavery and the internal or domestic slave trade were legal, while a free state was one in which they were prohibited. Between 1812 and 1850, it was considered by the slave states to be politically imperative that the number of free states not exceed the number of slave states ...
Illinois: White embossed serial number and border on black base; "ILL 30" at far right Indiana: Iowa: Kansas: Kentucky: Pair of plates, each with white base with red embossed lettering and border. Front: top of plate emblazoned with "19 KENTUCKY 30" with county name at bottom and registration digits in center.
The Cumberland Plateau is a deeply dissected plateau, with topographic relief commonly of about 400 feet (120 metres), and frequent sandstone outcroppings and bluffs.. At Kentucky's Pottsville Escarpment, which is the transition from the Cumberland Plateau to the Bluegrass in the north and the Pennyrile in the south, there are many spectacular cliffs, gorges, rockhouses, natural bridges, and ...