Author
George Papadellis | SG Head
The Meteora unusual enormous (up to 313 m.) columns of rock is not an easy-to-explain geological phenomenon. These types of formations, in other areas, are usually volcanic of hard igneous rock. But the Meteora Greece is not. The geology of Meteora is a composition of a mixture of sandstone and conglomerate.
Photo by: iStock.com | JordeAngjelovik
How was Meteora formed?
Hundreds of millions of years ago there was a delta at the edge of a lake, into which there was a constant flow of stone, sand and mud from streams. Over millions of years this flow formed the conglomerate. Then, around 60 million years ago, during the Paleogene period, earthquakes and earth movement pushed the seabed upward.
Rocks around Agia Moni | Photo by: Falk2, J26 588 Ágia Moní, CC BY-SA 4.0
This phenomenon created a high plateau and caused vertical faults. Then came the weather phenomena. The water, the severe change of temperatures and the wind "worked" for millions of years, widening the faults and forming the rocks.
Photo by: Mzmona, Meteora Greece, CC BY-SA 3.0
Geology of Meteora
Rock formations with weathering processes have been created in several areas throughout the world. The unique thing with Meteora Greece is the uniformity of the sedimentary rock constituents deposited over millions of years without vertical layering.
Rockfalls
Although extremely rare, rockfalls (usually after earthquakes) constitute an existing threat for the pilgrims and for tourists. The fierce earthquake of 1954 shook the rocks and the rockfall of 2005 blocked access to the Meteora in Greece top for many days.
Very similar to Olgas rock formation in Central Australia which is 10 times older than this .
These huge formations are like if they have been put there by someone. They are so strange.
A geological playground for scientists!!
According to historical data, the Meteora rocks were formed about 60 million years ago, during the Paleogene Period.