Geologic units in Van Zandt county, Texas

Wilcox Group, undivided (Paleocene to Eocene) at surface, covers 58 % of this area

Wilcox Group, undivided

Wills Point Formation (Paleocene) at surface, covers 13 % of this area

Wills Point Formation

Queen City Sand (Eocene) at surface, covers 11 % of this area

Queen City Sand

Alluvium (Holocene) at surface, covers 8 % of this area

Alluvium

Carizzo Sand (Eocene) at surface, covers 5 % of this area

Carizzo Sand

Reklaw Formation (Eocene) at surface, covers 3 % of this area

Reklaw Formation

Kincaid Formation (Paleocene) at surface, covers 0.9 % of this area

Kincaid Formation

Weches Formation (Eocene) at surface, covers 0.4 % of this area

Weches Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 0.3 % of this area

Terrace deposits

Sparta Sand (Eocene) at surface, covers < 0.1 % of this area

Sparta Sand