Mesozoic • Triassic

Tredian Formation

Middle Triassic (Anisian)

Stratigraphic position

In the Salt Range column

LimestoneSandstoneMixedFossils recordedConformable

Band colour = period; texture = dominant rock type. Lines between bands mark the contact type. True scale makes height ∝ recorded thickness; hatched = thickness not recorded. Ages approximate, for ordering.

This unit (highlighted) within its province column; faded ends continue above and below. Line style marks the contact type.

Continental red bed sequence indicating arid to semi-arid conditions. Forms colorful outcrops throughout the Salt Range. Part of the Musakhel Group.

Significance. Records regression and continental conditions; distinctive marker horizon

Lithology: Red and purple sandstone with green mottling
Thickness: 50-100 m
Type locality: Tredian, Salt Range

Fossils

Plant fragmentsVertebrate bones (rare)

Provinces

Salt Range Kohat Basin Potwar Basin

Related units

Below · older

Mianwali Formation

Triassic

Above · younger

Kingriali Formation

Triassic