The Cattamarra Coal Measures is an Early Jurassic geological unit in Western Australia. == Description == They are part of the Perth Basin, and are a sequence of non-marine, probably fluvial sandstones, shales and silts including bituminous coal, and are up to 300 m thick.
The Cattamarra Coal Measures is an Early Jurassic geological unit in Western Australia. == Description == They are part of the Perth Basin, and are a sequence of non-marine, probably fluvial sandstones, shales and silts including bituminous coal, and are up to 300 m thick.
Source: Wikipedia "Cattamarra Coal Measures" · CC BY-SA 4.0
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