Meadowcroft dating

18-Mar-2020 10:38

It means that people were living in North America prior to the end of the last ice age.The Meadowcroft Rockshelter was named a National Historic Landmark in 2005.A roof collapse 13,000 to 14,000 years ago trapped beneath it a wealth of material uncovered in excavations.Adovasio says roughly 700 pieces of stone, some of them tools made from jasper and chert were recovered from the deepest units at the site.Dennis Jenkins, a leading archaeologist from the University of Oregon, agrees with Adovasio's broader points about the Clovis debate, but said some still have questions about Meadowcroft's exact age.Jenkins said the main concerns are whether the earliest plant remains that helped date the Meadowcroft site are accurate, but he added that it looks like Adovasio "has done very meticulous work at Meadowcroft." A recent poll of archaeologists found that opinions on Meadowcroft are still divided, with about 38 percent agreeing with Adovasio's dates, the same number unsure, and about 20 percent saying it isn't that old, according to a study published last year in the Society for American Archaeology.Other critics hypothesize that there was natural contamination of his radiocarbon dates, for instance, from water leaching coal from below the archaeological deposits.

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To archaeologists it was a stunning discovery that contradicted the so-called Clovis first theory, which dated the first settlement in the Americas to New Mexico about 13,000 years ago.

The question is important because it ties into bigger questions on how and why so many different cultures developed in the Americas, and whether they all descended from one group that came across from Asia or arrived in multiple waves.

[pullquote] On that question, Adovasio's theory of multiple visits has mostly won out since other pre-Clovis sites have been discovered in North and South America.

Stone tools provide some insights into ancient cultures as evidence of subsistence activities, such as hunting, fishing, and wild plant gathering.

In addition, stone tools can provide some information about connections with other peoples and geographic regions.

To archaeologists it was a stunning discovery that contradicted the so-called Clovis first theory, which dated the first settlement in the Americas to New Mexico about 13,000 years ago.

The question is important because it ties into bigger questions on how and why so many different cultures developed in the Americas, and whether they all descended from one group that came across from Asia or arrived in multiple waves.

[pullquote] On that question, Adovasio's theory of multiple visits has mostly won out since other pre-Clovis sites have been discovered in North and South America.

Stone tools provide some insights into ancient cultures as evidence of subsistence activities, such as hunting, fishing, and wild plant gathering.

In addition, stone tools can provide some information about connections with other peoples and geographic regions.

"It has all the attractions of a prehistoric Holiday Inn, and that's why they used it," Adovasio said, noting that some early groups stayed for only a few days, but the spot was passed down through oral histories and people returned, eventually for longer periods.