GTW7: Mortar after Porta S. Ubaldo in the north direction.

Mortar containing coarse aggregate grains (1-2 cm) of calcareous lithotypes (wackestone with planktonic foraminifers – probably Scaglia formation; calcareous breccia composed of Radiolarian bearing wackestone - Maiolica formation – and chert fragments cemented by sparite). Fine aggregate grains consist of limestone, quartz, white mica, foraminifera skeletons, and cocciopesto fragments. The binder is a poorly homogeneous lime micritic matrix with uncarbonated lumps of lime and porosity (about 5-10%vol) due to irregular-shaped voids and fissures (see pictures below).

The picture below shows the diffraction spectrography of material GTW7.