Volcanological applications of pyroclastic studies in Tephra studies.
Pyroclastic studies can help determine the internal plumbing systems and magma release mechanisms of volcanoes, for example where they yield the magma output rate and provide evidence for magma mixing, and fall deposits supply the best means
of studying compositionally-zoned magma chambers. They are also important in volcanic hazard studies, where the past pattern of explosive activity is used as a guide to the probable future behaviour of a volcano.
Tephrochronology and palaeoecology: the value of isochrones in Tephra studies.
The applications of tephrochronology to the correlation of temporally similar yet spatially disjunct flora and fauna are discussed, using as examples recent work in Iceland and Kenya. The paucity of such studies is noted and its relevance to studies
The application of tephrochronology in Iceland in Tephra studies.
The situation in Iceland for establishing a tephrochronological time scale is very good... Tephrochronology has been applied to studies of the eruption history of the most active volcanoes. It has also been utilised in archaeological research
and palynology, studies of fluvial erosion, wind erosion, and in cryopedological and glaciological research. A tephrochronology correlation between Iceland, the European continent and Greenland has been established.
A dark tephra layer, named a, is found in soils in East and Northeast Iceland. Its volume is approximately 2 km and it covers about 40 % of Iceland. An isopach map and grain-size study suggests that the tephra deposit forms a distinctly two-lobed