Sunday, June 03, 2018

NEW DATING TECHNIQUE USED ON SITE OF GRAN DOLINA


To obtain this dating and overcome the different challenges which arose over the study duration of almost three years, collaboration was needed from specialists in different scientific disciplines such as geochronologists, geologists, archaeologists and paleoanthropologists, among whom are included several researchers from the CENIEH such as Josep María Parés and José María Bermúdez de Castro, coordinators of the program, as well as Laura Martín-Francés and Isidoro Campaña.

With the constant improvement over time of the analytical techniques and dating methods, it has been possible to progressively refine the chronology of the archaeological site of Gran Dolina since its initial study, published in 1995.

The present work joins other recent studies centering on the lower levels. In fact, relatively recently the chronology of the level TD4, where the oldest lithic industries of the site were identified, was successfully refined.

In TD1, it has likewise been possible to date a level at the base of the sedimentary fillings, where a change of magnetic polarity, identified as the Jaramillo event, was observed: this is very difficult to detect at archaeological sites in caves and it marks a very well-defined moment approximately one million years ago.

"Gran Dolina thus becomes one of the best-dated archaeological sites in the world, adding this new direct dating of a human fossil," says Bermúdez de Castro.



Read more at: https://phys.org/news/2018-05-dating-homo-antecessor.html#jCp

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