Figure 9. Mapped mineral distribution patterns in the Ravenglass Estuary, United Kingdom. (A) Quartz, (B) plagioclase, (C) K-feldspar, and (D) total carbonate. Note that plagioclase and carbonate abundance increase toward the margin of the inner estuary and central basin. Sediment is most quartz rich in outer-estuarine sediment. A slight depletion in K-feldspar is observed in the tidal inlet.