The Beacon Limestone Formation, historically known as the Junction Bed, is a formation of the early Jurassic age (Pliensbachian–Toarcian). It lies above...

Sand Formation. These rocks sit upon strata forming the broader hill on which the Tor stands; the various layers of the Beacon Limestone Formation and...

(uppermost/youngest) Oystermouth Formation Oxwich Head Limestone Formation Penderyn Oolite Member Honeycombed Sandstone Member Dowlais Limestone Formation Abercriban Oolite...

the Marlstone Rock bed. The lowest part of the upper Lias, the Beacon Limestone Formation, formed during the Pliensbachian to Toarcian, around 182 Mya....

preserved head and forefin of Pachycormus from the Strawberry Bank Lagerstatte, part of the Beacon Limestone Formation in Somerset, UK. Scale bar equals 1 cm....

The Dyrham Formation is a geologic formation in England. It preserves fossils dating back to the early part of the Jurassic period (Pliensbachian). List...

main part of the Wessex Basin where the formation is at its thickest. The ferruginous facies consists of limestones cemented with goethite, ferroan calcite...

Handlirsch 1939 Posidonia Shale, Green Series, Germany, Toarcian, Beacon Limestone Formation, United Kingdom, Toarcian †Fulgoropsis Martynov 1937 Kyzyl-Kiya...

Kelly et al. 2018 Beacon Limestone Formation, United Kingdom, Early Jurassic (Toarcian) †Valdopteron Kelly et al. 2018 Weald Clay Formation, United Kingdom...

Toarcian Beacon Limestone Formation, Whitby Mudstone, United Kingdom, Toarcian Shiti Formation, China, Middle Jurassic (Bajocian) Itat Formation, Russia, Middle...

porous white limestone, deposited in a marine environment. Chalk is a limestone that consists of coccolith biomicrite. A biomicrite is a limestone composed...

Lias is divided into the following formations (from top to base): Bridport Sand Beacon Limestone Dyrham Formation Charmouth Mudstone Blue Lias In the...

headquarters in Guam. The hill is capped with limestone belonging to the Alifan limestone formation (Miocene). The limestone is up to 150 feet thick with the base...

This article describes the geology of the Brecon Beacons National Park in mid/south Wales. The area gained national park status in 1957 with the designated...

List of thalattosuchian-bearing stratigraphic units, or geologic formations. Thalattosuchia is the name given to a clade of marine crocodylomorphs from...

Mudstone Formation). The top of this formation is marked by a well-developed calcrete, the Chapel Point Limestone. The lowermost Devonian formation is the...

Formation Whitcliffe Formation (siltstone/mudstone/limestone, formerly Upper Ludlow Shales) Aymestry Limestone Formation (limestone/mudstone) Lower Ludlow...

West Formation (formerly the St Maughans beds) at the top of which lies a calcrete – a discontinuous limestone band known as the Ffynnon Limestone. Above...

Carboniferous Limestone in northeast Wales. In the south, poorly cemented sands occur sporadically in the central and western part of the Brecon Beacons National...

formations. Next in succession are the Pathhead Formation rocks which include cycles of sandstones, siltstones, mudstones, ironstones and limestone,...

granite. Part of the granite formations show evidence of strong coastal erosion, while in other areas there are limestone deposits embedded in the granite...

the Middle-Late Devonian boundary. The formation is the uppermost formation in the group and overlays the Beacon Heights Orthoquartzite and underlies the...

within Llanelly Formation limestone, dolomitised and close to Gully Oolite Formation limestone (crease limestone) and Black Rock Limestone a few tens of...

(formerly the St Maughans Formation). A calcrete, the Ffynnon Limestone can often be seen at the interface of the two formations and is associated with a...

Devonian period. A thin calcrete known as the Ffynnon Limestone occurs at the junction of the two formations in some places. The calcrete and the sandstone have...

the Glenthorne Site of Special Scientific Interest. The formation comprises slates and limestones of marine origin and sandstones and slates with a shallow...

and include the Neptune Group, Horlick Formation, the Crashsite Quartzite, and the Taylor Group within the Beacon Supergroup.: 32–33, 44–47  During the...

prominent calcrete known as the Ffynnon Limestone. Numerous landslips have occurred within the St Maughans Formation around the flanks of the hill. The entire...

Group or Formation Period Notes Alston Group / Knipe Scar Limestone Carboniferous Alston Group / Potts Beck Limestone Carboniferous Ampthill Clay Jurassic...

The summit and the eastern slopes of the hill fall within the Brecon Beacons National Park. A southern top of the hill, Mynydd Garn-wen achieves a height...