Composed of a clay-rich foraminiferous calcareous marl. The matrix of this petrofabric has a very fine texture and a soapy feel and is generally coarse, containing 15-22% non-plastic inclusions. There is a wide variation among samples from the different ware groups that are composed of this petrofabric, probably because of different practices in clay refinement and tempering. The occurrence of voids is also variable.
This petrofabric is associated with the P202 fabrics identified for EBA combed ware jars from Egypt (see Sowada et al. 2020; Sowada et al. 2021a, 2021b; Badreshany et al. 2022).
The aplastic inclusions are always poorly sorted but can exhibit a bimodal distribution. The naturally occurring grains exhibit a high to moderate sphericity and are rounded to well rounded. Rarely grains occur that are elongated. Silt-sized planktonic foraminifera are found occasionally (1-3%). In some instances, there are very high levels of foraminifers, indicating a greater contribution of chalk sources. They occur in the clay matrix and are found in pieces of fossiliferous limestone (chalk). The fossils often contain sparites. The overwhelming majority of microfossils in the samples represent various species of the Genus Globigerina, include Globotruncana gagnebibi and Globorotalia pseudobulloides. Pieces of micritic lime mudstone occur in the samples occasionally to moderately. They occur in fine to coarse sand sized grains. Rarely, examples of silty limestones are found. Chalky limestones composed of Globigerina occur rarely. Rounded grains of fine to coarse sand sized calcite occur rarely. Rounded grains of quartz with a moderate to high sphericity occurred occasionally in the samples. Quartz most commonly occurs in fine to medium sand sized grains that are anhedral. Sand sized grains of hematite occurrs in trace amounts.
Composed of a clay-rich foraminiferous calcareous marl. The matrix of this petrofabric has a very fine texture and a soapy feel and is generally coarse, containing 15-22% non-plastic inclusions. There is a wide variation among samples from the different ware groups that are composed of this petrofabric, probably because of different practices in clay refinement and tempering. The occurrence of voids is also variable.
This petrofabric is associated with the P202 fabrics identi...