Flows are landslides that involve the movement of material down a slope in the form of a fluid. Flows often leave behind a distinctive, upside-down funnel shaped deposit where the landslide material has stopped moving. There are different types of flows: mud, debris and rock.
Trees tend to grow straight up. This is especially true in the forest when there is competition for light. If you look around the slope, you will see some bent trees. Trees with trunks that curve in one direction before eventually straightening out. This typically doesn't happen on flat ground, but on a slope, and the outward side of the bend always angles downhill. The reason for this is the movement of the soil. "Soil creep" is the gradual movement of the substrate downhill over time. It’s a slow process, but all the soil on a slope is moving. Importantly for trees, the soil moves more quickly on the surface than deeper down. Because of this, there’s more soil pushing the tree at ground level than below – and gradually, eventually, this tilts the tree. To compensate, trees will put on thicker growth – wider rings – on the downhill side, slowly changing the angle of the trunk to regain an upright posture. Eventually, the roots grow deep enough and strong enough that the soil can no longer tilt the tree. At this point, the growth will even out to correct the angle, and the curve straightens! You can even find trees that apparently overcorrected, and you get what looks like a very stretched-out S-shape before the tree goes fully vertical.
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1: What type of landslide happened here?
2: Is it still sliding?
3: What do you see that supports your answer for #2?
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references
https://www.mtpr.org/
https://www.bgs.ac.uk/
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