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The Marietta Earthworks is an archaeological site located at the confluence of the Muskingum and Ohio Rivers in Washington County, Ohio, United States. Most of this Hopewellian complex of earthworks is now covered by the modern city of Marietta. Archaeologists have dated the ceremonial site's construction to approximately 100 BCE to 500 CE.
Map of the Muskingum River watershed Aerial view of the Ohio and Muskingum Rivers at Marietta, Ohio. The Muskingum River (/ m ə ˈ s k ɪ ŋ (ɡ) ə m / mə-SKING-(g)əm; Shawnee: Wakatamothiipi) [4] is a tributary of the Ohio River, approximately 111 miles (179 km) long, in southeastern Ohio in the United States. An important commercial route ...
The Putnam Bridge, also known as the Marietta Bridge and the Marietta Street Bridge, is a historic United States river crossing that connects Marietta, Ohio, with its Fort Harmar district. The original 1880 bridge was the first free crossing of the Muskingum River. The 1913 bridge was a contributing structure to the Harmar Historic District.
The geology of Ohio formed beginning more than one billion years ago in the Proterozoic eon of the Precambrian. The igneous and metamorphic crystalline basement rock is poorly understood except through deep boreholes and does not outcrop at the surface. The basement rock is divided between the Grenville Province and Superior Province.
The annual Ohio River Sternwheel Festival was founded in 1976, [43] and features Sternwheeler ships gathering on the Ohio River in Marietta. The event attracts an estimated 100,000 attendees per year. [ 44 ]
Researchers from Mass General Brigham, a health care system in Boston, Massachusetts, shared with Fox News Digital some of the scientific developments and breakthroughs they expect to see in 2025.
In the case of hydrothermal fluids, host rocks are older than the predominantly aqueous fluids that carry and deposit metals and thus complicate defining a host rock associated with gold fluid formation. A number of rock types have been suggested as the source of orogenic gold, but due to the variability of host rocks in Earth’s history and ...
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