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The earthquake-disturbed sites of particular interest were paleoliquefaction dikes , a relict of soil carried upward through other layers of geologic materials when seismic waves rapidly moved through water-saturated soils causing water to seek an escape route to the surface . In others , thick layers of gessolike material ( gofun ) have been piled up to give the petals of the flowers a dimensionality . For hot composting , mix together or alternate layers of green materials such as grass clippings and brown materials such as dead leaves . In simple terms , transistors and data pathways ( internal wires ) are created in semiconductors by applying different layers of various materials at exact places , one after the other . Because very few exposures of geologic materials exist in the region , most of the geology cannot be seen or interpreted from the surface but is hidden from view under complex layers of glacial materials .