Formation and architecture of the quaternary glacial succession
The locis of persistent deposition and consequently increased thickness are confined to the areas of persistent subsidence and uplift during the Quaternary time. The succession is statigraphically more complete within this kind of structures. The areas showing less active neotectonic vertical moveme...
| Main Author: | |
|---|---|
| Format: | Article in Journal/Newspaper |
| Language: | Lithuanian English |
| Published: |
2003
|
| Subjects: | |
| Online Access: | http://lsmu.lvb.lt/LSMU:ELABAPDB5389719&prefLang=en_US |
| Summary: | The locis of persistent deposition and consequently increased thickness are confined to the areas of persistent subsidence and uplift during the Quaternary time. The succession is statigraphically more complete within this kind of structures. The areas showing less active neotectonic vertical movements represent plains, low-relief uplifts and have played an important role in the migration of the ice sheet. These areas were subjected to intense transportation and removal of the material. Only a thin cover has been preserved, mainly accumulated during the last glaciation. The boundaries of the minimum thickness in some way mark the zones of the high gradient of the neotectonic vertical movements. It is very likely that these areas were not subjected to maximum exaration, but represent the pathways of the most intense transit of the material. The composition and architecture of the Quaternary succession are closely related to the neotectonic structures and vertical movements of the earth's crust. The block-type architecture of the Quaternary succession is ascribed to activity of the tectonic blocks. Therefore, data on the Quaternary continental glacial, melt-water, lacustrine-alluvial and other deposits are essential for reconstruction of the evolution and character of vertical movements of the earth's crust during the Quaternary, as well as of the linear and areal neotectonic structures. |
|---|