2024-03-28T19:44:08Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/126892015-06-01T10:59:22Zcom_10261_48com_10261_5col_10261_301
Soil volatile mercury, boron and ammonium distribution at Cañadas caldera, Tenerife, Canary Islands, Spain
Hernández, Pedro A.
Pérez, Nemesio
Salazar, José M. L.
Ferrell, Ray
Álvarez, Carlos Enrique
Gobierno de Canarias
North Atlantic Treaty Organization
16 pages, 15 figures, 7 tables.-- Printed version published Jun 2004.
Spatial distribution of soil Hg, B and NH4 was investigated in the soils of Cañadas caldera, Canary Islands, in the summer of 1992. Soil Hg, B and NH4 were also studied over several transects intersecting structural features. Soil Hg concentration ranged from 10.83 to 45,000 μg kg−1 whereas those of B and NH4 ranged from 8.45 to 4512 μg kg−1 and from 0.31 to 181 mg kg−1, respectively. Probability plot analysis identified 3 geochemical populations for Hg and B whereas only 2 were detected for NH4. Multivariate analysis (cluster, factor and multiple regression analysis) was used to identify subtle geochemical characteristics of the groups and factors and to determine the relationship between Hg, B and NH4 and the soil secondary parameters. High soil Hg, B and NH4 concentrations are interpreted as being related to areas where a convection system has developed, coinciding with the most recent volcanic centers located along the basaltic rift zones and with the main features inside Cañadas caldera: Teide volcano and Roques de García. Background levels of soil volatiles are present in locations where no indication of subsurface thermal activity occurs. Generally, the secondary controls on Hg, B and NH4 are subtle and are overwhelmed in areas characterized by subsurface geothermal activity.
We are grateful to the Patronato del Parque Nacional de Las Cañadas del Teide and Teleférico Pico Teide S.A. for their assistance and logistical support. This research was carried out with financial support by the Cabildo Insular de Tenerife and NATO CRG #940882 (C.E.A. & N.C.S.).
2009-04-29T09:56:01Z
2009-04-29T09:56:01Z
2004-02-25
artículo
http://purl.org/coar/resource_type/c_6501
Applied Geochemistry 19(6): 819-834 (2004)
0883-2927
http://hdl.handle.net/10261/12689
10.1016/j.apgeochem.2003.12.003
http://dx.doi.org/10.13039/100004415
en
http://dx.doi.org/10.1016/j.apgeochem.2003.12.003
none
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Elsevier