Buried or Fossil Alluviums

Auriferous Conglomerates

Residual Alluviums
They are accumulations of one place only, generated by mechanic action of the meteorization; in other words, they are found near to the original pendent, in the skirts of the mountains in the form of triptical material, as a consequence of the disintegration of the geological layers by the already mentioned agents, as heat and cold. To these deposits they will be denominated Eluvia and, according to Allan Bateman they can be considered as an intermediate or embryonic phase in the formation of the placing of beaches or of the fluvial.

Transported Alluviums
They are deposits which are found in the beds of the water currents or in the valleys, they constitute the most important deposits. These deposits are denominated colluvial or diluvia, defining them as the clastic accumulations proceeding from intermittent action of the dis-iced water, of wind and of gravity, which have been transported through short distances. These deposits appear in a reduced form. In base of the type of people who have intervened in the formation of these deposits, they can subdivide in glacial and eolic alluviums. 

Fluvial, Alluvial or Prolusion deposits
A lythological group is denominated and inconsolidated which consists in sand, gravel, clay and lime, which have been deposited and/or are being deposited mainly along the different river beds which drain in some regions.

These deposits confirm transported grounds of etherogenic composition, permeable and of varied potency.