Sedimentary facies Flashcards
(10 cards)
a body of sediment with distinctive physical, chemical, and biological attributes
Sedimentary Facies
sea level rise with respect to the land.
Marine Transgression
shoreline migrates landward
Marine Transgression
the facies that formed in offshore environments become superposed on facies deposited in nearshore environments
Marine transgression
Another aspect of a marine transgression is that the rocks making up each facies become ___ in a ____.
Younger ; Landward direction
when sea level fell with respect to the continent and the environments that paralleled the shoreline migrated seaward
Marine Regression
Another aspect of a marine Regression is that the rocks making up each facies become ___ in a ____.
Younger ; seaward direction
This law states that the facies seen in a conformable vertical sequence will also replace one another laterally
Walther’s law
Who developed the Walther’s law?
Johannes Walther
3 causes of marine transgression and regression
- Uplift and Subsidence
- The amount of Water frozen in Glaciers
- Rates of seafloor spreading