Interpretation of Ash Analysis
Ash is an important indicator of clastic input, likely derived from marine or fluvial deposition of clay, silt, and sand during peat development. When comparing ash contents of subsurface samples with outcrop samples, ash content on average appears to be lower for outcrop samples. Lower ash contents of outcrop samples may be due to coal deposits being up dip and further away from a marine influence than samples down-dip.
Read more about this topic: Coal Bed Methane Extraction
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