Foraminifera as sea-level indicators

摘要: There are over 1000 foraminiferal species presently living in marine environments, but relatively few of these can be used as direct indicators sea level. We detail here certain assemblages occupying marsh environments that for purpose. Marsh have been shown to occur worldwide within narrowly defined vertical zones some which extend less than 10 cm total range. These assemblage zones, once known, relocated paleo-marsh deposits and accurately related paleo-sea The key success organisms sea-level is their primary controlling factor appears elevation above mean