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. Tuesday, 06 December 2022, 17:43 (05:43 PM) CST, day 340 of 2022 .
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Archaeological stratigraphy of a prehistoric Native American site along the Susquehanna River in Pensylvania.

"Archaeological stratigraphy of a prehistoric Native American site along the Susquehanna River in Pensylvania. Spannign 6,000 years of prehistory, the trata bearing numbered tags represent periods during which people occupied the site. The intervening layers are natural flood deposits laid down by river overflows."
Lewis, Jumain, Kilgore 2007, p. 180

 

Principles of Geoloty.

 

In the News . . .

  • Map That Changed the World Has Its 200th Birthday -- New Scientist (15 January 2015)

  • Minnesota Geological Survey

    [Established in 1872 by the State of Minnesota as part of the University of Minnesota, the Minnesota Geological Survey (MGS) serves the people of Minnesota by providing systematic geoscience information to support the stewardship of water, land, and mineral resources. This rather lovely digital collection brings together a record of all items published by the MGS since its creation. Here, visitors will find documents, reports, maps, and GIS data for online viewing or downloading as well. The thematic collections here include the Aeromagnetic Map Series, the annual reports of the Minnesota Geological and Natural History Survey, and the wonderful county atlas series. Visitors with a penchant for geology, natural history, and geography will find much to enjoy here. KMG -- The Scout Report]]

See also BBC News Science and Environment


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