Figure 1: Location
map of the sections studied in the North Khorasan Province (NE Iran). A: first
spot with borings, 6 km NE of the Chal Bash village; B: "Behkadeh Razavi"
section, 2.5 km SE of the Chal Bash village; C: type section of the Zard
Formation, 2 km South of the Zard village.