Geologic units in Rusk county, Texas

Carizzo Sand (Eocene) at surface, covers 33 % of this area

Carizzo Sand

Wilcox Group, undivided (Paleocene to Eocene) at surface, covers 28 % of this area

Wilcox Group, undivided

Reklaw Formation (Eocene) at surface, covers 21 % of this area

Reklaw Formation

Alluvium (Holocene) at surface, covers 7 % of this area

Alluvium

Queen City Sand (Eocene) at surface, covers 7 % of this area

Queen City Sand

Weches Formation (Eocene) at surface, covers 2 % of this area

Weches Formation

Sparta Sand (Eocene) at surface, covers 1 % of this area

Sparta Sand

Terrace deposits (Pleistocene and Holocene) at surface, covers 0.8 % of this area

Terrace deposits