ЛАГУННО-ТРАНСГРЕССИВНЫЕ ТЕРРАСЫ

Аннотация

During the sea-level rise lagoon formation is taking place if the dip of the coastal land is less than the dip of the offshore. Under such condition lagoon and coastal bar appear simultaneously. They are genetically associated and form joint transgressive system. The sediments of bar and lagoon are of different types, though their accumulation occurs at the same hypsometric level. Thence, lagoon sediments in the transgressive train have a seat rock from previous regressive phase; they are overlay by shelly and sandy loose beach deposits of the same transgressive stage as lagoon loam and have the same age. Such paragenesis should be taken into account while interpreting geological data and paleogeographical reconstructing.