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It is a normal rock slide, AKA a landslide, they happen all the time. If a slope is not stable the rock collapses, landslides are very common and can be triggered by almost anything from rain, to imperceptible quakes, to simple erosion. It could be rotational or translational the two blur together anyway. Most likely just a shallow rotational landslide. The ...


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@Muze “What would the color be if all of the dirt on Earth was added equally to a palette?” The average color of dirt is Pantone Warm Grey #11C.


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Just to elaborate on David Hammen's correct comment: The granite is old. The mountain is fairly young. There is no contradiction Mountain belts like the Rockies are built by tectonic forces. Two plate collide, and mountains rise in between. The material that makes up the mountain does not have to form during the collision (although it sometime does). A &...


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They seem to be differentiated according to their morphology, Qof deposits being highly dissected and more consolidated than Qyf, thus older. From a random pamphlet of the map series: Qyf Alluvial fan deposits (Holocene)—Unconsolidated, heterogeneous layers of sand, silt, and gravel; relatively undissected; deposited by streams emanating from canyons onto ...


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Before the transform process of the San Andreas Fault zone we know today, there was indeed a subduction zone event taking place in this same region near now coastal California during the late Jurassic to late Cretaceous periods. Today the city of San Francisco physically represents the aftermath of the ancient clash of mighty tectonic titans as the city and ...


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