Here's how it works:
* Glaciers carve landscapes: As massive sheets of ice, glaciers move and carve out valleys, erode bedrock, and deposit sediment. They leave behind unique features like U-shaped valleys and glacial moraines.
* Glacial striations: Glaciers also leave behind scratches and grooves on bedrock, called glacial striations. These striations are caused by rocks embedded in the ice scraping against the underlying rock.
* Distribution of glacial striations: Scientists have found glacial striations on different continents, indicating that these landmasses were once located much closer to the South Pole. The direction of the striations also suggests that the ice sheets were flowing in a similar direction, implying a contiguous ice sheet.
* Pangaea and glacial striations: The distribution of glacial striations across continents now separated by oceans, and the direction of these striations, are consistent with the theory of Pangaea. It suggests that these landmasses were once joined together near the South Pole, allowing a single, massive ice sheet to cover them.
In summary: While glaciers themselves don't directly "prove" Pangaea, the distribution and direction of glacial striations on continents now separated by oceans provide strong evidence that these landmasses were once connected, supporting the theory of Pangaea.
