Period: |
Formation: |
members
and lenses: |
Holocene
Period: |
Qal
- Quaternary alluvium |
|
Pleistocene
Period: |
Qt
- Quaternary terrace deposits |
|
Cretaceous
Period: |
Ktm
- Twin mountains |
|
Pennsylvanian
Period: |
IPtg
- Graham and
Thrifty Formations |
IPbu - Bunger
limestone |
IPgc - Gonzales Creek
shale |
IPhc - Home
Creek |
(limestone and shale) |
IPcc - Colony
Creek shale |
(shale and sandstone) |
IPr - Ranger
Limestone |
(limestone and shale) |
IPpl -
Placid shale |
(shale, sandstone and
limestone) |
IPw -
Winchell limestone |
(limestone and shale) |
IPwm -
Wolf Mountain |
(shale, sandstone and
limestone) |
IPpp
- Palo Pinto |
IPwi - Wiles
limestone |
IPo - Oran
sandstone |
(limestones 1-6) |
IPf - Fambro
sandstone |
IPwy - Wynn
limestone |
IPmw -
Mineral Wells |
Keechi Creek shale |
IPtc - Turkey Creek
limestone |
Salesville shale |
IPdb - Dog Bend
limestone |
East Mountain
shale |
IPlp - Lake Pinto
sandstone |
IPvb - Village Bend
limestone |
IPc - Capps limestone |
ss1 - sandstone |
IPhm - Hog Mountain
sandstone |
IPbr -
Brazos River (expanded) |
|
IPm
- Mingus |
(Thurber coal) |
IPg - Goen limestone |
IPdv - Dobbs Valley
sandstone |
IPs - Santo
limestone |
IPgr
- Grindstone Creek |
IPbc - Buck Creek
Sandstone |
IPbb1-3 - Brannon
Bridge Limestones 1-3 |
IPlb
- Lazy Bend |
IPmb - Meek Bend
Limestone |
(limestone) |