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  • Moraines: Understanding Glacier-Formed Ridges
    The winding ridge left by a melting glacier is called a moraine.

    There are different types of moraines, depending on their location and how they formed:

    * Lateral Moraine: A ridge of debris that forms along the sides of a glacier. These ridges are formed by rock and sediment that falls from the valley walls onto the glacier.

    * Medial Moraine: A ridge of debris that forms in the middle of a glacier. These ridges are formed when two lateral moraines merge as two glaciers flow together.

    * Terminal Moraine: A ridge of debris that marks the furthest point of a glacier's advance. These moraines are formed when the glacier melts and deposits its load of sediment at its terminus.

    * Recessional Moraine: Similar to a terminal moraine, but formed when a glacier retreats and pauses for a period of time before continuing to retreat. These moraines are often found in a series, marking the different stages of a glacier's retreat.

    So, the next time you see a winding ridge in a mountainous area, it could be a moraine, a powerful testament to the force of glaciers!

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