The sign is for scale.
The outcrop exposes folds in the Franciscan Complex melange. Sediment and rock scraped off the subducting plate - called an accretionary wedge -- have caused the folding of mostly cherts (ribbon cherts) .
In geology, a mélange is a large-scale breccia, a mappable body of rock characterized by a lack of continuous bedding and the inclusion of fragments of rock of all sizes, contained in a fine-grained deformed matrix. The mélange typically consists of a jumble of large blocks of varied lithologies. Large-scale melanges formed in active continental margin settings generally consist of altered oceanic crustal material and blocks of continental slope sediments in a sheared mudstone matrix. The mixing mechanisms in such settings may include tectonic shearing forces, ductile flow of a water-charged or deformable matrix (such as serpentinite), sedimentary action (such as slumping, gravity-flow, and olistostromal action), or some combination of these. Some larger blocks of rock may be as much as 1 kilometre (0.62 mi) across. Smaller-scale localized mélanges may also occur in shear or fault zones, where coherent rock has been disrupted and mixed by shearing forces.
क्या आप के पास ऐसा प्रपत्र है जिसे आप एक अनुप्रयोग के रूप मैं बदलना चाहतें है?
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