Glacial polish forms when fine sediments smooth bedrock surfaces, often alongside striations. Unlike striations, it’s a fragile feature that erodes quickly, making it harder to spot. It’s commonly found on harder rocks like quartzite, such as at Snake Mountain's summit, but less so on softer stones like shale or marble. Unlike slickenlines from faults, glacial polish appears on a single rock surface due to glacier movement. Good examples exist at sites like Lessor’s Quarry and Rock Point.