Physical and observable evidence for geological subduction zones, or, transformed rock by electromagnetic geology forces and process?
Assemblages of pillow basalts and associated radiolarian cherts are often indicative of subduction zone processes where shallow marine rocks are deformed, metamorphosed, and plastered onto a continental margin to form a coastal mountain range.
The black rock with white speckles on the left is a pillow basalt lava that was extruded by submarine volcanoes, probably into relatively shallow water... Such voids are subsequently filled-in by light-colored minerals like zeolites, quartz, and calcite.
The red and green rocks on the right are banded radiolarian cherts that were originally deposited on top of the pillow basalts on the seafloor... If other sediments, such as clay, are excluded radiolarians may form extensive and thick deposits of relatively pure silica that are eventually converted into the sedimentary rock called chert. The red and green colors in these cherts are due to iron impurities.
Pillow Basalts and Radiolarian Cherts | Earth Science Picture of the Day
The geologists who now proposes the previously revolutionary and controversial plate tectonics theory have not been around long enough to observe the live processes of subduction zones. It is implied from scientific peer accepted interpretations of data, theories and models.
Subduction zone, oceanic trench area marginal to a continent in which, according to the theory of plate tectonics, older and denser seafloor underthrusts the continental mass, dragging downward into the Earth’s upper mantle the accumulated trench sediments. The subduction zone, accordingly, is the antithesis of the mid-oceanic ridge. New seafloor is generated from the upper mantle at the mid-oceanic ridges, spreads laterally outward, and is eventually subducted, or consumed, at the margins of ocean basins. Subduction may also occur between two regions of oceanic crust, with older, denser sections underthrusting younger, less-dense ones.
Subduction zone | Encyclopædia Britannica
How do cratons and material from just after the formation of our planet, according to the nebular hypothesis, survive these subduction processes.
Continents have collided and broken apart repeatedly over geologic time. When they separate, new ocean basins develop between the diverging pieces through the process of seafloor spreading. Spreading, which originates at oceanic ridges, is compensated (to conserve surface area on the planet) by subduction
Geologic History - North America Continent | Encyclopædia Britannica