Tectonic Wall

A pretty famous geotope in the Allgäuer Alps with extreme folds and layering. The hundreds of meters thick top layer of mostly Dolomite belongs to the Lech valley thrust sheet (215 million years old) which got pushed above the Allgäu sheet below (190 million years old, here mostly covered by overgrown talus fields) and Radiolarite from the Ruhpolding formation even further below (160 million years old and originally 2000 meter below sea level — hard to imagine!).

#LandscapePhotography #NaturePhotography #Geology #Tectonics #Alps #Mountains #Rocks #BlackAndWhite #Monochrome #NoirCountry

`We also document the oldest known geomagnetic reversal at ~3.46 Ga, consistent with an axial dipolar dynamo that reversed less frequently than today’s. The existence and rates of these surface and core geophysical phenomena provide geodynamic context to Earth’s early geophysical and biological evolution.`

http://dx.doi.org/10.1126/science.adw9250

#tectonics #geology #geophysics

#QuizOfTheDay: Plate #Tectonics is the generally accepted scientific theory that considers the Earth's lithosphere to comprise a number of large tectonic plates which have been slowly moving since about 3.4 billion years ago.

How many major Tectonic Plates are there?

A. 5
B. 6
C. 7
D. 8

https://knowledgezone.co.in/resources/quiz?qId=6360c89b4387a56690a30cbb