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The Athabasca basin, a historical fluvial siliciclastic basin with sediments from the Hudsonian mountains with the occasional rare marine sequence. [16] [dead link ] The Athabasca basin was formed during the Statherian or Paleohelikian 1.7 to 1.6 billion years ago when coarse fluvial and marine clastic sediments were laid down containing gold, copper, lead, zinc, and uranium oxides.
The low sulfur content and acceptable ash levels of these bituminous coals make them attractive as coking feedstocks, and large quantities are mined for that purpose. However, the lack of heavy industry in Western Canada means that only a limited amount of this coal is consumed in Canada, and most is exported to Japan, Korea and other countries.
The coal seams of the Ravenscrag Formation are of lignitic rank and have a low sulphur content. They are mined at several locations in southern Saskatchewan to fuel mine-mouth electrical power stations. [4] Clay has been produced from the Ravenscrag Formation and used primarily for the manufacture of various types of brick. [12] [13]
In Saskatchewan, underground mining of potash is conducted to depths of about 1,100 metres (3,610 ft), and solution mining is used at greater depths. Reserves suitable for underground and solution mining have been estimated at 14 billion tonnes (15 billion short tons) and more than 42 billion tonnes (46 billion short tons), respectively.
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Carswell is an impact structure within the Athabasca Basin of the Canadian Shield in northern Saskatchewan, Canada. [1] It is 39 kilometres (24 mi) in diameter and the age is estimated to be 115 ± 10 million years (Lower Cretaceous). The impact structure is exposed at the surface. Landsat image with crater structure overlain.
Gow is an impact crater in Saskatchewan, Canada. It is 5 km (3 mi) in diameter and the age is estimated to be less than 250 million years (Triassic or later). The crater contains a classic crater lake (Gow Lake [1]) with an island (Calder Island) formed by the central uplift. [2] [3] It is the smallest known crater in Canada with an uplift ...
The weather associated with an occluded front includes a variety of cloud and precipitation patterns, including dry slots and banded precipitation. Cold, warm and occluded fronts often meet at the point of occlusion or triple point. [28] A guide to the symbols for weather fronts that may be found on a weather map: 1. cold front 2. warm front