Superstructure 13 : The upper structural layer of an orogenic belt, which is subjected to relative shallow or near surface deformation processes, as distinct from an underlying and more profoundly deformed infrastructure
Intergovernmental Oceanographic Commission IOC technical series 37, Tsunami Glossary (A glossary of terms and acronyms used in the tsunami literature - English), , United Nations Educational, Scientific and Cultural Organization UNESCO, Paris, France 1991. http://unesdoc.unesco.org/images/0008/000885/08853 8eb.pdf, (ND/ Tsunami Sci - Brit) {590}