* Glacial striations: These are scratches or grooves carved into bedrock by rocks embedded in the base of a moving glacier. These are definitely a glacial feature caused by erosion.

* Striations in other contexts, like muscle striations, rock striations (which can be caused by other erosive forces), or striations in wood are not specifically related to glaciers or erosion.

So, the answer is: It depends on the context. If you're talking about the scratches on bedrock caused by glaciers, then yes, striations are a glacial feature caused by erosion. Otherwise, you need to provide more information.