What type of unconformity is produced when layers of sandstone and conglomerate bury an eroded surface of an igneous or metamorphic rock?

The process of sedimentation is defined by the process by which the materials transported by different agents run off, glaciers, the wind and coming from the erosion and weathering of the rocks are deposited, becoming sediments. Carrying out the process of formation of the different rocks this process goes hand in hand with erosion