Gases of Icelandic hydrothermae

S. A. Arnorsson; V. I. Kononov; B. G. Polak

doi:10.1007/BF02596942

Gases of Icelandic hydrothermae

S. A. Arnorsson
, V. I. Kononov
, B. G. Polak

Faculty of Earth Sciences

University of Iceland

Research output: Contribution to journal › Article › peer-review

Abstract

The main hydrochemical types of Icelandic hydrothermae are recognized as well as the reguliarities in their distribution. Nitrogenous thermae are spread mainly in the areas of Pre-Quaternary flood-basalts; carbon-dioxide thermae are peculiar of the volcanic zone of Snaefellsnes peninsula, whereas nitrogenous-carbon-dioxide thermae are characteristic of the areas of Pre-Holocene volcanic activity in the Median neovolcanic zone and some adjacent areas. The special hydrochemical feature of the axial parts of Median neovolcanic zone is the presence of high-temperature hydrothermal systems with great amount of H₂ in the gas composition. Hydrogenous thermae of Iceland are considered to be a specific genetic type of hydrothermae, being formed in the zones of mid-oceanic ridges. The origin of H₂ is discussed.

Original language	English
Pages (from-to)	2-14
Number of pages	13
Journal	Bulletin Volcanologique
Volume	39
Issue number	1
DOIs	https://doi.org/10.1007/BF02596942
Publication status	Published - Mar 1975

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AU - Arnorsson, S. A.

AU - Kononov, V. I.

AU - Polak, B. G.

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AB - The main hydrochemical types of Icelandic hydrothermae are recognized as well as the reguliarities in their distribution. Nitrogenous thermae are spread mainly in the areas of Pre-Quaternary flood-basalts; carbon-dioxide thermae are peculiar of the volcanic zone of Snaefellsnes peninsula, whereas nitrogenous-carbon-dioxide thermae are characteristic of the areas of Pre-Holocene volcanic activity in the Median neovolcanic zone and some adjacent areas. The special hydrochemical feature of the axial parts of Median neovolcanic zone is the presence of high-temperature hydrothermal systems with great amount of H2 in the gas composition. Hydrogenous thermae of Iceland are considered to be a specific genetic type of hydrothermae, being formed in the zones of mid-oceanic ridges. The origin of H2 is discussed.

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Gases of Icelandic hydrothermae

Abstract

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