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Monogenetic volcanic fields; origin, sedimentary record, and relationship with polygenetic volcanism

Karoly Nemeth
Monogenetic volcanic fields; origin, sedimentary record, and relationship with polygenetic volcanism (in What is a volcano?, Edgardo Canon-Tapia (editor) and Alexandru Szakacs (editor))
Special Paper - Geological Society of America (August 2010) 470: 43-66


Monogenetic volcanism is commonly represented by evolution of clusters of individual volcanoes. Whereas the eruption duration of an individual volcano of a volcanic field is generally short, the life of the entire volcanic field is longer than that of a composite volcano (e.g., stratovolcano). The magmatic output of an individual center in a volcanic field is 1-3 orders of magnitude less than that of a composite volcano, although the total field may be of the same volume as a composite volcano in any composition. These features suggest that the magma source feeding both monogenetic volcanic fields and composite volcanoes are in the same range. Monogenetic volcanic fields therefore are an important and enigmatic manifestation of magmatism at the Earth's surface. The long eruption duration for an entire volcanic field makes this type of volcanism important for understanding sedimentary basin evolution. Accumulated eruptive products may not be significant from a single volcano, but the collective field may contribute significant sediment to a basin. The eruptive history of volcanic fields may span millions of years, during which dramatic climatic and paleoenvironmental changes can take place. Through systematic study of individual volcanoes in a field, detailed paleoenvironmental reconstructions can be made as well as paleogeographic evaluations and erosion-rate estimates. Monogenetic volcanoes are typically considered to erupt only once and to be short-lived; recent studies, however, demonstrate that the general architecture of a monogenetic volcano can be very complex and exhibit longer eruption durations than expected. In this way, monogenetic volcanic fields should be viewed as a complex, long-lasting volcanism that in many respects carries the basic characteristics similar to those known from composite volcanoes.

ISSN: 0072-1077
EISSN: 2331-219X
Serial Title: Special Paper - Geological Society of America
Serial Volume: 470
Title: Monogenetic volcanic fields; origin, sedimentary record, and relationship with polygenetic volcanism
Title: What is a volcano?
Author(s): Nemeth, Karoly
Author(s): Canon-Tapia, Edgardoeditor
Author(s): Szakacs, Alexandrueditor
Affiliation: Volcanic Risk Solutions, Institute of Natural Resources, Palmerston North, New Zealand
Affiliation: Centro de Investigacion Cenitifica y de Educaction Superior de Ensendada, Department of Geology, Ensenada, Mexico
Pages: 43-66
Published: 201008
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 300
Accession Number: 2011-004534
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
S55°00'00" - S22°00'00", W73°00'00" - W53°30'00"
N42°00'00" - N49°00'00", W117°15'00" - W111°04'60"
N47°45'00" - N49°40'00", E16°49'00" - E22°30'00"
Secondary Affiliation: Sapientia University, ROM, Romania
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201103
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