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Geology Of Anglesey
The geology of Anglesey, the largest (714 km2) island in Wales is some of the most complex in the country. Anglesey has relatively low relief, the 'grain' of which runs northeast–southwest, i.e. ridge and valley features extend in that direction reflecting not only the trend of the late Precambrian and Palaeozoic age bedrock geology but also the direction in which glacial ice traversed and scoured the island during the last ice age. It was realised in the 1980s that the island is composed of multiple terranes, recognition of which is key to understanding its Precambrian and lower Palaeozoic evolution. The interpretation of the island's geological complexity has been debated amongst geologists for decades and recent research continues in that vein. History of geological study The first geological map of Anglesey was published in 1822 by John Stevens Henslow. It was Edward Greenly who provided the first detailed map of the island in 1920, a year after the publication of a two- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in 2021 of 3,107,500 and has a total area of . Wales has over of coastline and is largely mountainous with its higher peaks in the north and central areas, including Snowdon (), its highest summit. The country lies within the Temperateness, north temperate zone and has a changeable, maritime climate. The capital and largest city is Cardiff. Welsh national identity emerged among the Celtic Britons after the Roman withdrawal from Britain in the 5th century, and Wales was formed as a Kingdom of Wales, kingdom under Gruffydd ap Llywelyn in 1055. Wales is regarded as one of the Celtic nations. The Conquest of Wales by Edward I, conquest of Wales by Edward I of England was completed by 1283, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ediacaran
The Ediacaran Period ( ) is a geological period that spans 96 million years from the end of the Cryogenian Period 635 million years ago (Mya), to the beginning of the Cambrian Period 538.8 Mya. It marks the end of the Proterozoic Eon, and the beginning of the Phanerozoic Eon. It is named after the Ediacara Hills of South Australia. The Ediacaran Period's status as an official geological period was ratified in 2004 by the International Union of Geological Sciences (IUGS), making it the first new geological period declared in 120 years. Although the period takes its name from the Ediacara Hills where geologist Reg Sprigg first discovered fossils of the eponymous Ediacaran biota in 1946, the type section is located in the bed of the Enorama Creek within Brachina Gorge in the Flinders Ranges of South Australia, at . The Ediacaran marks the first appearance of widespread multicellular fauna following the end of Snowball Earth glaciation events, the so-called Ediacaran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parys Mountain
Parys Mountain ( cy, Mynydd Parys) is located south of the town of Amlwch in north east Anglesey, Wales. It is the site of a large copper mine that was extensively exploited in the late 18th century. Parys Mountain is a mountain in name only, being a hill with an elevation of barely 150m. History Parys Mountain was mined for copper ore in the early Bronze Age, as shown by sub-surface debris nearly 4,000 years old revealed during excavations in 2002. Since then access has been regained to the sealed underground workings of the Parys mine revealing further evidence for this ancient mining. Parys Mountain is thus one of the few sites in Britain where there is evidence for the prehistoric beginnings of the British metal mining industry. The 18th century miners recognised that they were following in the steps of much earlier workers, an observation that was then linked to the discovery locally of copper ingots bearing Roman inscriptions. In 1764 Charles Roe of Macclesfield was gran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beaumaris
Beaumaris ( ; cy, Biwmares ) is a town and community on the Isle of Anglesey in Wales, of which it is the former county town of Anglesey. It is located at the eastern entrance to the Menai Strait, the tidal waterway separating Anglesey from the coast of North Wales. At the 2011 census, its population was 1,938. The community includes Llanfaes. History Beaumaris was originally a Viking settlement known as ("Port of the Vikings"), but the town itself began its development in 1295 when Edward I of England, having conquered Wales, commissioned the building of Beaumaris Castle as part of a chain of fortifications around the North Wales coast (others include Conwy, Caernarfon and Harlech). The castle was built on a marsh and that is where it found its name; the Norman-French builders called it , which translates as "fair marsh". The ancient village of Llanfaes, a mile to the north of Beaumaris, had been occupied by Anglo-Saxons in 818 but had been regained by Merf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llanfairynghornwy
Llanfair-yng-Nghornwy () is a village in Anglesey, in north-west Wales. See also *St Mary's Church, Llanfair-yng-Nghornwy St Mary's Church, Llanfair-yng-Nghornwy is a medieval parish church in the north-west of Anglesey, north Wales. The date of foundation of the church, which is in the village of Llanfair-yng-Nghornwy, is unknown, but the oldest parts date from the ... References Villages in Anglesey Cylch-y-Garn {{Anglesey-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mynydd Bodafon
Mynydd Bodafon (Bodafon Mountain) is a small collection of peaks including the Arwydd (The Sign or signal) which is the highest point on the island of Anglesey (although not in the county A county is a geographic region of a country used for administrative or other purposes Chambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ... of Anglesey — see Holyhead Mountain). It lies about 2½ miles west of the coastal town of Moelfre and ⅔ of a mile south-west of the hamlet of Brynrefail. The meaning of ''Bodafon'' is obscure. ''Bod'' is a common placename element meaning 'dwelling' and ''afon'' here is probably a corruption of the personal name A(e)ddan (''afon'' is Welsh for 'river' but topography rules that out). On the mountain is a lake named Gors Fawr (the big marsh), containing rudd, roach and recently pike. Originally, there were two lakes on either side of the ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llanfaethlu
Llanfaethlu is a village and community in the north west of Anglesey, in north-west Wales. The community population taken at the 2011 Census was 553. The village takes its name from the Church of Saint Maethlu. The community includes Llanfwrog. History There are two prehistoric scheduled monuments within Llanfaethlu Community. A hill fort with a single bank and ditch lies on a headland near the coastal hamlet of Tre-Fadog, overlooking the sandy bay of Port Trefadog. To the east of the village is the Capel Soar Standing Stone, a large and prominent standing stone visible from the A5025 and close to Soar Baptist Chapel. It is a slab, 3.2 metres (10 ft) high, and 1.7 metres (5.6 ft) wide at its base, tapering to a rounded top. Roman activity was shown by a small hoard of Roman coins, found in 1929 on a hill to the west of the church, some having been minted when Domitian was emperor, around 90 AD. The village is built around the Church of Saint Maethlu. This church is dedicate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuff
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash is lithified into a solid rock. Rock that contains greater than 75% ash is considered tuff, while rock containing 25% to 75% ash is described as tuffaceous (for example, ''tuffaceous sandstone''). Tuff composed of sandy volcanic material can be referred to as volcanic sandstone. Tuff is a relatively soft rock, so it has been used for construction since ancient times. Because it is common in Italy, the Romans used it often for construction. The Rapa Nui people used it to make most of the '' moai'' statues on Easter Island. Tuff can be classified as either igneous or sedimentary rock. It is usually studied in the context of igneous petrology, although it is sometimes described using sedimentological terms. Tuff is often erroneously called tufa in guidebooks and in television programmes. Volcanic ash The material that is expelled in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentraeth
Pentraeth (; ) is a village and community on the island of Anglesey (''Ynys Môn''), North Wales, at . The Royal Mail postcode begins LL75. The community population taken at the 2011 census was 1,178. The village itself having a population of 557. Its Welsh name means ''at the end of (or head of) a beach'', and it is located near Traeth Coch (Red Wharf Bay). There is a small river, Afon Nodwydd which runs through it. The village's ancient name was ''Llanfair Betws Geraint''. In 1170 it was the site of a battle when Hywel ab Owain Gwynedd landed with an army raised in Ireland in an attempt to claim a share of the kingdom of Gwynedd following the death of his father Owain Gwynedd. He was defeated and killed here by the forces of his half-brothers Dafydd ab Owain Gwynedd and Rhodri. In 1859, Charles Dickens stayed in the village on his trip, as a journalist for ''The Times'', to visit the wreck of the ''Royal Charter'' in Moelfre. Between 1908 and 1950 it was served by Pentraet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llanddwyn Island
Ynys Llanddwyn (also known as Llanddwyn Island) is a small tidal island off the west coast of Anglesey (Welsh: Ynys Môn), northwest Wales. The nearest settlement is the village of Newborough. Geology and geography The island is of geological interest with pillow lava, jasper formations and aeolian sand deposits. The island forms part of the National Nature Reserve of Newborough Warren which includes the extensive and floristically rich sand dune system. Ynys Llanddwyn is a tidal island; it remains attached to the mainland except at high tide. It provides views of Snowdonia and the Llŷn Peninsula. Tŵr Mawr lighthouse marks the western entrance to the Menai Strait. IUGS geological heritage site In respect of the site having 'spectacular, accessible and well-preserved exposures of late Neoproterozoic-Cambrian mélange with more than 200 years of study', the International Union of Geological Sciences (IUGS) included the 'Ynys Llanddwyn late Neoproterozoic-Cambrian Mélange' in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cefni Reservoir
Llyn Cefni is a small reservoir in the centre of Anglesey, Wales which is managed by Welsh Water and Hamdden Ltd, while the fishery is managed by the Cefni Angling Association. The reservoir is located just northwest of the island's county town of Llangefni. History During World War II, a water scheme was devised for the town of Llangefni in central Anglesey. It involved water from a local source being pumped to two settling tanks in the Dingle part of the town. From here the water was pumped across the river to a reservoir and water tower, on the site of the present Pennant Estate. These arrangements became redundant with the building of the Cefni Reservoir, which was completed in 1951, but the settling tanks and pumping station survive in Llangefni to this day. The new scheme was designed to supply most of the water needs for the people of Anglesey for the foreseeable future. Geography The Afon Cefni is one of the main rivers of Anglesey. It was dammed about northwest of Llan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberffraw Bay
Aberffraw is a village and community on the south west coast of the Isle of Anglesey ( cy, Ynys Môn), in Wales, by the west bank of the Afon Ffraw (Ffraw River). The community includes Soar and Dothan. Located near the A4080 and the nearest rail station is Bodorgan. History In the early Middle Ages, Aberffraw was the capital of the Kingdom of Gwynedd from c.860 AD until c.1170. Under the House of Aberffraw it came to be the most important political centre in medieval Wales. The '' Llys'' remained the symbolic throne of the Kings of Gwynedd from the 9th century to the 13th century. The Royal Annals of Edward I of England show the Llys was dismantled in 1315 to provide building materials for nearby Beaumaris Castle. ...appeared to demonstrate the presence of a two-phase, round-angled, rectangular enclosure, at least 70m NNE-SSW, thought to represent a Roman military work, refurnished in the early medieval period as a llys (Princely court) enclosure; although a radio- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
