沉积物重力流-深水牵引流沉积组合——鲍玛序列多解性探讨

Deposit Assemblage of Gravity Flow and Traction Current in Deep Water ——A Study of the Multiple interpretation of the Bouma Sequence

鲍玛序列各段都存在不同的成因解释 ,沉积物重力流及深水牵引流理论的发展要求重新审视鲍玛序列所代表的真正含义。等深流、内波流及内潮汐流等深水牵引流、沉积物重力流引发的牵引流对早期重力流沉积进行改造 ,可形成不同类型的沉积物重力流深水牵引流沉积组合 ,该组合类似于鲍玛序列的沉积特征 ,在实际解释中极可能将其归为具鲍玛序列的浊流沉积 。

Each section in the Bouma sequence has a different interpretation in genesis. It is necessary to reevaluate the implication of Bouma sequence with the development of the theory of sediment gravity flow and deep water traction current. Reworking of the early gravity flow deposits, which is caused by deep water current (contour current, internal-wave and interal-tide currents) and sediment gravity flow, results in various deposit assemblages formed by sediment gravity flows and deep water traction currents. The assemblages are similar to the Bouma sequence in depositional characteristics and regarded perhaps as turbidities with the Bouma sequence in actual interpretation, which may be the reason of multiple interpretation of the Bouma sequence.