Bouma sequence

The resulting deposition can create graded deposits similar to those found Bouma sequences.

The sandstone beds within this member commonly exhibit full or partial Bouma sequences.

The Bouma Sequence specifically describes the medium grained variety, which are usually found in the continental slope or rise setting.

In a real Bouma sequence, some beds may be missing - Bouma describes the ideal sequence.

This final result is a series of graded sediments of sand, silt and mud and these are known as turbidites, as described by the Bouma sequence.

The Bouma Sequence (after Arnold H. Bouma, 1932-2011) describes a classic set of sedimentary beds (turbidites) deposited by a sediment-water turbidity current.

The Bouma Sequence is divided into 5 distinct beds labelled A through E, with A being at the bottom and E being at the top; each bed is described by Bouma as having a specific lithology (see below).