| 翻訳と辞書 |
Hay Bluff
Hay Bluff (Welsh: ''Penybegwn'')〔Welsh Academy Dictionary〕 is a prominent hill at the northern tip of the Black Mountains, an extensive upland massif which straddles the border between south-east Wales and England. The mountain sits on an escarpment which faces north and runs roughly east-west, the next peak in the west being the Twmpa. The flat summit of Hay bluff overlooks the middle Wye Valley and the book town of Hay-on-Wye is marked by a triangulation pillar at a height of .
The hill is largely within the Welsh county of Powys though parts of its eastern flanks lie within the English county of Herefordshire.
== Geology ==
The base and indeed greater part of the hill is formed from mudstones of the St Maughans Formation whilst the upper part is formed from the sandstones and mudstones of the Senni Formation (formerly known as the 'Senni Beds'), both of which are assigned to the Old Red Sandstone laid down during the Devonian period. A number of small quarries have been worked on its slopes in the past, not least for the Ffynnon Limestone, a calcrete which crops out along the northeastern and northwestern flanks of the hill at the base of the Senni Formation.〔British Geological Survey 1:50,000 map sheet 214 ''Talgarth'' & accompanying sheet explanation〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Hay Bluff」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|