Bayport International Holdings Inc. (BAYP)

[CHA-RU]

The pay streaks of placer deposits may rest on or near bedrock or on some stratum above bedrock. The bedrock in placer deposits is commonly referred to as the 'true bottom', although the term is little used today. When the streaks rest on a well-defined stratum of sand, gravel, or clay above the bedrock they are said to be on a 'false bottom'.

Placers have been variously categorized, but here we shall use a simple nomenclature based upon whether the placers are formed by concentration of gold in situ over or in the immediate vicinity of primary deposits, namely 'residual' or 'eluvial placers', or by agencies that have concentrated the gold in the near vicinity or at some distance from the primary source. In the latter category we recognize 'alluvial', 'beach' and 'aeolian placers'. The terms 'saprolite' or 'saprolitic placer' were formerly used for certain types of eluvial placers, mainly in the eastern United States.

Eluvial, alluvial, beach and aeolian placers may become buried after their formation and are sometimes referred to as 'buried placers'.

These placers may be buried under:

•(1) volcanic deposits as in California and Australia;
•(2) glacial deposits as in Canada and Russia;
•(3) talus and other slope deposits;
•(4) aeolian deposits as in Australia;
•(5) alluvial sands and gravels;
•(6) marine and lacustrine deposits.