Abstrakt
On seismic panels from southwestern Jutland a specific seismic facies, characterized by high amplitude, steeply dipping reflectors is recognized within a background of low-angle seismic reflection pattern. The prograding interval, interpreted as a prograding delta, records a distinct shift in facies during the deposition of offshore to shallow marine shelf deposits and is therefore interpreted as belonging to a lowstand systems tract. Correlative outcrops of nearshore sandy sediments in eastern Jutland also show a marked facies change characterized by a 1 m thick gravel layer sandwiched between fine-grained marine sands. This gravel is interpreted as having been deposited under subaerial conditions in a fluvial environment that was coeval with the lowstand delta in southwest Jutland. Clay mineral studies support this interpretation of the gravel layer. The marine sediments are characterized by having a smectite clay mineral association; in contrast, the gravel layer contains no smectite, but has a clay mineral suite that is characteristic of rivers draining the hinterland east of the study area.
Originalsprog | Engelsk |
---|---|
Titel | Sequence stratigraphy - concepts and applications |
Redaktører | F.M. Gradstein, K.O. Sandvik, N.J. Milton |
Forlag | Elsevier |
Sider | 413-421 |
Antal sider | 9 |
ISBN (Trykt) | 0444827803 |
Status | Udgivet - 1995 |
Programområde
- Programområde 3: Energiressourcer