In lithostratigraphy, coal measures are coal-bearing strata, with the term typically applied to European units of the Upper Carboniferous System. In the United Kingdom, the term is equivalent to regional components of the Westphalian-age Coal Measures Group.
In lithostratigraphy, coal measures are coal-bearing strata, with the term typically applied to European units of the Upper Carboniferous System. In the United Kingdom, the term is equivalent to regional components of the Westphalian-age Coal Measures Group.
Source: Wikipedia "Coal measures" · CC BY-SA 4.0
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