APIM - Accessory Protocol Interface Module, All Acronyms, viewed August 14, 2016, <https://www.allacronyms.com/APIM/Accessory_Protocol_Interface_Module>.
Volcanic activity in rift valleys is important in several different ways to both geology and. archaeology. First, the rocks, such as rhyolite and basalt, and also ashes are important for. correlation and dating the deposits and archaeological sites in rift valleys.olcanic activity in rift valleys is important in several different ways to both geology and. archaeology. First, the rocks, such as rhyolite and basalt, and also ashes are important for. correlation and dating the deposits and archaeological sites in rift valleys.
As the plates separate along the boundary, the block between the faults cracks and drops down into the soft, plastic interior (the asthenosphere). The sinking of the block forms a central valley called a rift. Magma (liquid rock) seeps upward to fill the cracks. In this way, new crust is formed along the boundary.Earthquakes occur along the faults, and volcanoes form where the magma reaches the surface. Where a divergent boundary crosses the land, the rift valleys which form are typically 30 to 50 kilometers wide.Examples include th e East Africa rift in Kenya and Ethiopia, and the Rio Grande rift in New Mexico.here a divergent boundary crosses the land, the rift valleys which form are typically 30 to 50 kilometers wide. Examples include th e East Africa rift in Kenya and Ethiopia, and the Rio Grande rift in New Mexico.