Category:Geologic formations in Wales

• Geologic formations in Wales by geochronology‎ (13 C)

*

• Fossil bearing geologic formations in Wales‎ (17 C)

A

• Aber Mawr Formation‎ (1 F)
• Allt Ddu Formation‎ (2 C, 1 F)
• Amlwch Beds‎ (2 F)

B

• Bedded Pyroclastic Formation‎ (1 F)
• Bettisfield Formation‎ (1 C)
• Black Rock Limestone‎ (5 C, 2 F)
• Blue Lias‎ (5 C, 37 F)
• Broad Vein Mudstone Formation‎ (1 C, 1 F)
• Brownstones Formation‎ (1 C, 6 F)

C

• Caer Bwdy Bay Formation‎ (1 C)
• Caerbwdi Sandstone‎ (1 C, 1 F)
• Caerfai Bay Formation‎ (1 C)
• Capel Curig Volcanic Formation‎ (1 F)
• Carnedd Iago Formation‎ (1 C)
• Cefn Mawr Limestone Formation‎ (1 C)
• Coed-yr-Allt Formation‎ (1 C)
• Conwy Castle Grit‎ (1 F)
• Conwy Rhyolite Formation‎ (1 C, 4 F)
• Cwm Eigiau Formation‎ (4 F)

D

• Dolhir Formation‎ (1 F)

F

• Ffestiniog Flags‎ (2 F)
• Foel Fras Volcanic Formation‎ (1 C)
• Foel Grach Basalt Formation‎ (1 C)

G

• Garnedd-Wen Formation‎ (1 C, 1 F)
• Gelliswick Bay Formation‎ (2 F)
• Glyn Gower Formation‎ (1 C)
• Gully Oolite Formation‎ (1 C, 3 F)
• Gwespyr Sandstone‎ (2 C)
• Gwna Mélange‎ (1 C, 1 F)

H

• Hells Mouth Grits‎ (1 C, 1 F)
• High Tor Limestone‎ (1 C, 1 F)
• Holywell Shale‎ (1 C)
• Hunts Bay Oolite‎ (3 F)

L

• Lingula Flags Formation‎ (1 C, 2 F)
• Llanarmon Limestone Formation‎ (1 C, 1 F)
• Llanbedr Formation‎ (empty)
• Llanfallteg Formation‎ (2 C, 1 F)
• Llanrian Volcanic Formation‎ (1 C)
• Llanvirn-Caradoc Black Mudstone‎ (1 C, 1 F)
• Llyn Conwy Formation‎ (3 C)
• Loggerheads Limestone Formation‎ (1 F)
• Lower Rhyolitic Tuff Formation‎ (4 F)

M

• Marchlyn Formation‎ (1 F)
• May Hill Sandstone‎ (2 C, 5 F)

N

• Nant Ffrancon Formation‎ (3 F)
• Nant Hir Formation‎ (1 C)
• Nantglyn Flags‎ (2 F)
• Nnat Ffrancon Formation‎ (1 F)

O

• Ogof Golchfa Formation‎ (1 F)
• Old Red Sandstone in Wales‎ (13 C, 15 F)

P

• Penmon Limestone‎ (2 C, 1 F)
• Plateau Beds Formation‎ (2 F)
• Porth Clais Formation‎ (1 C)

R

• Red Wharf Limestone Formation‎ (1 C, 2 F)
• Rhinog Formation‎ (1 C)
• Rhoscolyn Formation‎ (1 C, 2 F)
• Riwlas Formation‎ (1 C)

S

• Sandy Haven Formation‎ (1 C)
• Senni Beds, Old Red Sandstone‎ (3 C, 2 F)
• South Stack Formation‎ (1 C, 7 F)
• St Non’s Formation‎ (1 C)
• St. Maughan's Formation‎ (3 C, 4 F)
• Sully Beds‎ (1 C)
• Sutton Stone‎ (2 F)

T

• Tal y Fan Volcanic Formation‎ (1 C, 4 F)
• Telpyn Point Sandstone Formation‎ (1 C)
• Twrch Sandstone‎ (9 F)

U

• Upper Rhyolitic Tuff Formation‎ (1 F)

W

• Woolhope Limestone‎ (7 F)