Small grooves and scratches on rock surfaces, often caused by the movement of glaciers over in situ material.
Fossils, geology and minerals. The highly acclaimed international earth science magazine with over 450 articles and book reviews.
Fossils, geology and minerals. The highly acclaimed international earth science magazine with over 450 articles and book reviews.
Small grooves and scratches on rock surfaces, often caused by the movement of glaciers over in situ material.