| 翻訳と辞書 |
| Oldham Coalfield ： ウィキペディア英語版 |
Oldham Coalfield
The Oldham Coalfield is the most easterly part of the South Lancashire Coalfield. Its coal seams were laid down in the Carboniferous period and some easily accessible seams were worked on a small scale from the Middle Ages and extensively from the beginning of the Industrial Revolution in the early 19th century until the middle of the 20th century.
==Geology==
The Coal Measures lie above a bed of Millstone Grit and are interspersed with sandstones, mudstones, shales, and fireclays and outcrop in the Oldham district. The Gannister Beds or Lower Coal Measures occupy the high ground of the West Pennine Hills above Oldham where the most productive seam is the Mountain mine. The Lower Coal measures were worked north-east of a line from High Crompton to Greenacres and the Middle Coal Measures to the south-west. The deepest seam in the Middle Coal Measures is the Royley mine which is equivalent to the Arley mine of the Manchester Coalfield. The coal seams dipped in the direction of central Manchester and were broken by numerous faults including the Oldham Edge, Chamber, Oak and Great Faults.
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「Oldham Coalfield」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.
|
|