Radiocarbon dating pedogenic carbonates
Pedogenic carbonates in the relict fluvial soil, which has by far the longest exposure period, showed the greatest range in vegetation became dominant at ∼9 ka, prior to significant strengthening of the summer monsoon.
This study illustrates that the stable isotope values of carbonate nodules and clusters from relict soils and/or slowly buried palaeosols can be used for palaeoenvironmental reconstructions in the context of a detailed chronologic framework.
The period Göbekli Tepe was built in is addressed as the Pre-Pottery Neolithic (PPN) after one of its main cultural traits, the absence of pottery vessels (there are clay figurines later in the PPN, however).
The general chronological division for the Early Neolithic was developed in the Southern Levant, by Kathleen Kenyon on the basis of the stratigraphy of Jericho.
These questions are absolutely legitimate (as actually really most of them are), and even more so with a site that claims to be the ‘first’ or ‘oldest’ (yet known) in many respects, the accuracy of dating becomes paramount.
Of course we have a larger number of scientific publications on the topic, and more are under way as we type this.
Datations AMS du radiocarbone des ciments carbonatés des conglomérats alluviaux fini-pléistocènes de la rivière Verdouble.
Implications paléoenvironnementales relatives au site paléolithique de Tautavel (Pyrénées-Orientales) The Pleistocene alluvial conglomerates of the Verdouble River valley, close to the famous Palaeolithic site of Tautavel, were the object of lithologic determinations including microtextural analysis intended to define their provenance, their sedimentary facies and their calcite cement.
She further based her subdivision on differences in the material culture.
Stable isotope values and radiocarbon ages were determined for pedogenic carbonate microsamples from relict soils and palaeosols from the Rio Grande Rift region of New Mexico.
Carbonate nodules and clusters were sampled from fluvial and piedmont soils and palaeosols with widely varying exposure durations (7–900 ky).
Radiocarbon dates from pedogenic carbonate in the southern Strzelecki Desert of South Australia are several thousand years too young, a conclusion contrary to previous work which suggested dates on such material were reasonably reliable within the semi-arid zone, or several thousand years too old in the arid zone.
Multiple dates from the same horizon, and from carbonates in vertical sequence in the same exposure, were used to test the reliability of those dates.