Sandbody Geometry

Determining sediment transport directions from Anisotropy of Magnetic Susceptibility (AMS) measurements

Knowledge of sand transport directions can place important constraints on the positions of sand input points into sedimentary basins, thus facilitating prediction of sand distribution and the geometry and direction of elongation of sand bodies.

Grain long axes are usually aligned parallel with fluid shear, so that sand transport directions can be determined from the grain fabric of the formation.

The 3-D grain fabric of representative sets of core plug samples can be determined quickly and accurately from measurements of their anisotropy of magnetic susceptibility (AMS).

The directions are then refered to North by palaeomagnetic re-orientation.