Geologic units in Cass county, Texas

Queen City Sand (Eocene) at surface, covers 57 % of this area

Queen City Sand

Weches Formation (Eocene) at surface, covers 13 % of this area

Weches Formation

Alluvium (Holocene) at surface, covers 9 % of this area

Alluvium

Reklaw Formation (Eocene) at surface, covers 7 % of this area

Reklaw Formation

Wilcox Group, undivided (Paleocene to Eocene) at surface, covers 7 % of this area

Wilcox Group, undivided

Terrace deposits (Pleistocene and Holocene) at surface, covers 5 % of this area

Terrace deposits

Sparta Sand (Eocene) at surface, covers 3 % of this area

Sparta Sand