Arenig Fawr, the mountain which lends its name to the geological series
In geology, the Arenig (or Arenigian) is a time interval during the Ordovician period and also the suite of rocks which were deposited during this interval.
reference to the "Arenig Ashes and Porphyries" in the neighbourhood of Arenig Fawr, in Merioneth, North Wales. The rock-succession in the Arenig district has...
Arenigs is an informal term for a group of mountains in central Snowdonia, in north Wales. They are not strictly defined, but normally include at least...
alongside the A4212 between Trawsfynydd and Bala. Arenig Fawr is the highest member of the Arenig range, with Arenig Fach (Welsh for 'small high ground'), a smaller...
Arenig Fach is a mountain in southern Snowdonia, north Wales. It is a peak in the Arenig range and lies to the north of its parent peak Arenig Fawr. It...
Llyn Arenig Fawr is a lake and reservoir located near the summit of Arenig Fawr, a mountain in North Wales. The lake's primary purpose is to supply water...
Arenig Fawr South Ridge Top is a top of Arenig Fawr in southern Snowdonia, North Wales. It lies in area of rocky knolls and small tarns, found on the broad...
Arenig Fawr South Top is the twin top of Arenig Fawr in southern Snowdonia, North Wales. It is the second highest member of the Arenig range, being 18...
Arenig railway station stood beneath Arenig Fawr on the Great Western Railway's Bala Ffestiniog Line in Gwynedd, Wales. It served this thinly populated...
Period in Britain was traditionally broken into Early (Tremadocian and Arenig), Middle (Llanvirn (subdivided into Abereiddian and Llandeilian) and Llandeilo)...
gwyniad. As a conservation measure, eggs of gwyniad were transferred to Llyn Arenig Fawr, a nearby reservoir, between 2003 and 2007. The taxonomy of the genus...
Wales. It is part of the Migneint-Arenig-Dduallt Special Area of Conservation, along with the mountains Arenig Fawr, Arenig Fach and Dduallt, covering a range...
located in the Migneint in Snowdonia, North Wales. It forms part of the Arenig mountain range being separated from the Moelwynion range at the head of...
a craggy ridge of quartzite called the Stiperstones (early Ordovician – Arenig Epoch, 500 Ma) runs parallel with the Pontesford-Linley fault, 6 km north-west...
James Dickson Innes painted in the Arenig valley, in particular one of Innes's favourite subjects, the mountain Arenig Fawr. In 2011 this period was made...
various guidebook writers have assigned them into groups such as the 'Arenigs', the 'Tarrens' and the 'Dyfi hills'. Snowdon's summit at 1,085 metres...
marine arthropods, the trilobites. It lived during the later part of the Arenig stage of the Ordovician Period, approximately 478 to 471 million years ago...
marine arthropods, the trilobites. It lived during the early part of the Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately...
marine arthropods, the trilobites. It lived during the early part of the Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately...
Mendolaspis is an extinct genus of trilobites. It lived during the Arenig stage of the Ordovician Period, approximately 478 to 471 million years ago. Sepkoski...
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