13/03/2023
WorLD CuP RocK 💝⚒️
Falsuri (Atocha), Bolivia 🇧🇴
Desc-
The geology of Bolivia comprises a variety of different lithologies as well as tectonic and sedimentary environments. The country is divided into a mountainous western area affected by the subduction processes in the Pacific and an eastern lowlands of stable platforms and shields.
This spectacular rock formation, located in the so-called Valley of the Rocks, is about 10 meters high, and the massive sphere on top rest upon a base, which acts as its support. The truly unique and rare shape of this rock, which resembles hands holding a globe, has even been likened to the biggest World Cup.
During the last ice age, peaking around 21,000 years ago, the large boulders you see on top of these stacks were pushed along by the advancing glaciers. Some of them were rolled along creating the round shape. When the glaciers retreated, they left the boulders where they stand. These boulders are made of a harder rock than the surrounding area they were deposited.
ERRATIC:
Glaciers can pick up chunks of rocks and transport them over long distances. When they drop these rocks, they are often far from their origin—the outcrop or bedrock from which they were plucked. These rocks are known as glacial erratics.
Erratics record the story of a glacier's travels. Looking for the bedrock units that correspond with erratics can reveal complex flow patterns.
Geologists identify erratics by studying the rocks surrounding the position of the erratic and the composition of the erratic itself. Erratics are significant because they can be transported by glaciers, and they are thereby one of a series of indicators which mark the path of prehistoric glacier movement.
📸-© Tourismo Camargo Bolivia (FB)