Radiocarbon dating of east america lake levels

When the lake level was at this height, the petroglyph-peppered boulders were submerged and therefore not accessible for carving, said Benson, an adjunct curator of anthropology at the University of Colorado Museum of Natural History. According to Benson, a white layer of carbonate made of limestone precipitated from the ancient, overflowing Winnemucca Lake had coated some of the petroglyph carvings near the base of the boulders.

A paper on the subject was published this month in the . Previous work by Benson showed the carbonate coating elsewhere in the basin at that elevation had a radiocarbon date of roughly 11,000 years ago.

American Association of Stratigraphic Palynologists Foundation, Dallas Texas, 423 p.

Pollen Records of Late-Quaternary North American Sediments.

Palaeoecological Events during the last 15000 years.

Every region has its own standard pollen stratigraphy, but these are now correlated approximately with the Blytt–Sernander framework.

The lake bed lies between the Lake Range on the west and the Nightingale Mountains and Selenite Range to the east.

Winnemucca Lake is about 45 km (28 mi) long and about 7 km (4.3 mi) wide.

To some extent this is even true for remote areas such as Patagonia and Like pollen, macrobotanical remains by themselves do not establish chronologies.

Absolute dating of these remains does, however, provide a chronology of floral changes throughout the Holocene.

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