SUBDUCTION ZONES and ISLAND ARCS. Subduction Zones are where cool lithospheric plates sink back into the mantle. It takes about 50 my for the ocean lithosphere that formed in the hot (>1000C) environment at mid-ocean ridges to cool to an equilibrium state and sink to its maximum depth below sea-level.
Ebola hemorrhagic fever is a viral disease caused by Ebola virus that results in nonspecific symptoms (see symptom section of this article) early in the disease and often causes internal and external hemorrhage (bleeding) as the disease progresses.
Subsequent person-to-person transmission is based on direct physical contact with the body fluids of a living or deceased patient. Detailed discussions of the epidemiology and pathogenesis of Ebola virus disease are found elsewhere (see Epidemiology and pathogenesis of Ebola virus disease). Patients with Ebola virus disease typically present with a nonspecific febrile syndrome that may include headache, muscle aches, and fatigue.