Fabric

TBY A6

Clay: 
This is a sub-group of TBY A. The matrix is brown to reddish brown in plane polarized light (PPL) and crossed polarized light (XPL) with weak optical orientation. It characterized by very silty, foraminiferous, calcareou matrix. The most distinctive property of this group is very large volume (15-25%) of silt size to fine sand limestone and chalk grains. There are small quantities of basalt, plagioclase, olivine, shells fragments and chert as silt component. Both silty and temper assemblage are characterized by relatively good sorting.
Temper: 
Fine limestone and chalk sand accompanied by basalt, plagioclase, olivine, shells fragments and chert grains. The temper is poorly sorted and comprises about 7-25% of the groundmass. The inclusions are commonly accompanied by very rare fresh shell fragments, subangular to rounded quartz, plagioclase and clynopyroxene grains.
Characteristic Inclusions: 
Limestone
Chalk
Basalt
Plagioclase
Olivine
Shell
Chert
Mixed Clay: 
No
Mixed Temper: 
No