Cretaceous aggregate and reservoir effect in dating of binding materials

Geochronometria

Małgorzata Szczepaniak¹  Danuta Michalska¹  Justyna Czernik²  Anna Pazdur³  Marta Å»urakowska⁴ 

[1] Adam Mickiewicz University;Poznań Radiocarbon Laboratory;Silesian University of Technology;University of The West of Scotland

关键词: mortar dating;    archaeometry;    charcoal;    radiocarbon dating;   

DOI  :  10.2478/s13386-012-0020-6

学科分类：社会科学、人文和艺术（综合）

来源: Politechnika Slaska * Instytut Fizyki

【 摘 要 】

Lime mortars may contain carbon from different origins. If the mortars are made of totally burnt lime, radiocarbon dating yields the true age of building construction. The presence of carbonaceous aggregates gives the so-called dead carbon effect, which may generate older ages. Another source of carbon is charcoal present in mortars. An attempt has been made to apply the radiocarbon method to mortars of archaeologically estimated age from the Dead Sea region. Petrographical analyses of these samples show the carbonaceous character of the binder and large amounts of limestone aggregate. Determination of the mineral composition of the mortars and comparison with the geology of the surrounding, allows the provenance of the raw materials to be identified. They probably represent the Cretaceous rocks of the Judea Group.

【 授权许可】

Unknown