34. The Bayesian network of claim 29 where the one or more root nodes comprise: one or more leaf nodes for sand-grain composition; and one or more leaf nodes for sand texture.
34. The Bayesian network of claim 29 where the one or more root nodes comprise: one or more leaf nodes for sand-grain composition; and one or more leaf nodes for sand texture. 35. The Bayesian network of claim 34 where the one or more root nodes for sand texture comprise: a leaf node for grain size; a leaf node for degree of sorting; and a leaf node for deposited matrix abundance.