Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain

A. Demény, R. Casillas, T. W. Vennemann, E. Hegner, G. Nagy, A. Ahijado, J. De la Nuez, P. Sipos, S. Pilet, J. Milton

Research output: Chapter in Book/Report/Conference proceedingChapter

9 Citations (Scopus)

Abstract

Chemical and isotopic compositions of amphiboles, biotites, pyroxenes and feldspars from gabbros and basalts of La Palma, Canary Islands, were studied to determine primary, plume-related compositions and effects of late-stage water-rock interactions. All the studied amphiboles have Sr isotope ratios close to those typical for the mantle, excluding the possibility of significant seawater influence. The pyroxenes and amphiboles also have stable isotope compositions that are typical for mantle-derived phases, whereas biotites and feldspars show signs of interaction with meteoric water. On the basis of the oxygen isotopic compositions, the infiltrating meteoric water derived from precipitation at an approximate elevation of 3500 m above sea level, indicating that La Palma reached this height when the gabbro complexes were formed. The unaltered hydrogen and oxygen isotope compositions of amphiboles show a trend from normal mantle ranges to -90‰ and 5.1‰, respectively; these values are very close to compositions found in other Canary Island complexes by earlier studies, and support the theory that these compositions reflect a plume component originating from depth, rather than local phenomena.

Original languageEnglish
Title of host publicationGeological Society Special Publication
Pages155-175
Number of pages21
Volume293
DOIs
Publication statusPublished - 2008

Publication series

NameGeological Society Special Publication
Volume293
ISSN (Print)03058719

Fingerprint

amphibole
Isotopes
stable isotope
plume
Rocks
Fluids
fluid
mantle
meteoric water
Chemical analysis
rock
isotopic composition
hydrogen isotope
water-rock interaction
gabbro
oxygen isotope
basalt
chemical composition
Water
sea level

ASJC Scopus subject areas

  • Ocean Engineering
  • Water Science and Technology
  • Geology

Cite this

Demény, A., Casillas, R., Vennemann, T. W., Hegner, E., Nagy, G., Ahijado, A., ... Milton, J. (2008). Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain. In Geological Society Special Publication (Vol. 293, pp. 155-175). (Geological Society Special Publication; Vol. 293). https://doi.org/10.1144/SP293.8

Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain. / Demény, A.; Casillas, R.; Vennemann, T. W.; Hegner, E.; Nagy, G.; Ahijado, A.; De la Nuez, J.; Sipos, P.; Pilet, S.; Milton, J.

Geological Society Special Publication. Vol. 293 2008. p. 155-175 (Geological Society Special Publication; Vol. 293).

Research output: Chapter in Book/Report/Conference proceedingChapter

Demény, A, Casillas, R, Vennemann, TW, Hegner, E, Nagy, G, Ahijado, A, De la Nuez, J, Sipos, P, Pilet, S & Milton, J 2008, Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain. in Geological Society Special Publication. vol. 293, Geological Society Special Publication, vol. 293, pp. 155-175. https://doi.org/10.1144/SP293.8
Demény A, Casillas R, Vennemann TW, Hegner E, Nagy G, Ahijado A et al. Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain. In Geological Society Special Publication. Vol. 293. 2008. p. 155-175. (Geological Society Special Publication). https://doi.org/10.1144/SP293.8
Demény, A. ; Casillas, R. ; Vennemann, T. W. ; Hegner, E. ; Nagy, G. ; Ahijado, A. ; De la Nuez, J. ; Sipos, P. ; Pilet, S. ; Milton, J. / Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain. Geological Society Special Publication. Vol. 293 2008. pp. 155-175 (Geological Society Special Publication).
@inbook{dc0cfd03444f470b983c4450269ac8e6,
title = "Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain",
abstract = "Chemical and isotopic compositions of amphiboles, biotites, pyroxenes and feldspars from gabbros and basalts of La Palma, Canary Islands, were studied to determine primary, plume-related compositions and effects of late-stage water-rock interactions. All the studied amphiboles have Sr isotope ratios close to those typical for the mantle, excluding the possibility of significant seawater influence. The pyroxenes and amphiboles also have stable isotope compositions that are typical for mantle-derived phases, whereas biotites and feldspars show signs of interaction with meteoric water. On the basis of the oxygen isotopic compositions, the infiltrating meteoric water derived from precipitation at an approximate elevation of 3500 m above sea level, indicating that La Palma reached this height when the gabbro complexes were formed. The unaltered hydrogen and oxygen isotope compositions of amphiboles show a trend from normal mantle ranges to -90‰ and 5.1‰, respectively; these values are very close to compositions found in other Canary Island complexes by earlier studies, and support the theory that these compositions reflect a plume component originating from depth, rather than local phenomena.",
author = "A. Dem{\'e}ny and R. Casillas and Vennemann, {T. W.} and E. Hegner and G. Nagy and A. Ahijado and {De la Nuez}, J. and P. Sipos and S. Pilet and J. Milton",
year = "2008",
doi = "10.1144/SP293.8",
language = "English",
isbn = "9781862392427",
volume = "293",
series = "Geological Society Special Publication",
pages = "155--175",
booktitle = "Geological Society Special Publication",

}

TY - CHAP

T1 - Plume-related stable isotope compositions and fluid-rock interaction processes in the Basal Complex of La Palma, Canary Islands, Spain

AU - Demény, A.

AU - Casillas, R.

AU - Vennemann, T. W.

AU - Hegner, E.

AU - Nagy, G.

AU - Ahijado, A.

AU - De la Nuez, J.

AU - Sipos, P.

AU - Pilet, S.

AU - Milton, J.

PY - 2008

Y1 - 2008

N2 - Chemical and isotopic compositions of amphiboles, biotites, pyroxenes and feldspars from gabbros and basalts of La Palma, Canary Islands, were studied to determine primary, plume-related compositions and effects of late-stage water-rock interactions. All the studied amphiboles have Sr isotope ratios close to those typical for the mantle, excluding the possibility of significant seawater influence. The pyroxenes and amphiboles also have stable isotope compositions that are typical for mantle-derived phases, whereas biotites and feldspars show signs of interaction with meteoric water. On the basis of the oxygen isotopic compositions, the infiltrating meteoric water derived from precipitation at an approximate elevation of 3500 m above sea level, indicating that La Palma reached this height when the gabbro complexes were formed. The unaltered hydrogen and oxygen isotope compositions of amphiboles show a trend from normal mantle ranges to -90‰ and 5.1‰, respectively; these values are very close to compositions found in other Canary Island complexes by earlier studies, and support the theory that these compositions reflect a plume component originating from depth, rather than local phenomena.

AB - Chemical and isotopic compositions of amphiboles, biotites, pyroxenes and feldspars from gabbros and basalts of La Palma, Canary Islands, were studied to determine primary, plume-related compositions and effects of late-stage water-rock interactions. All the studied amphiboles have Sr isotope ratios close to those typical for the mantle, excluding the possibility of significant seawater influence. The pyroxenes and amphiboles also have stable isotope compositions that are typical for mantle-derived phases, whereas biotites and feldspars show signs of interaction with meteoric water. On the basis of the oxygen isotopic compositions, the infiltrating meteoric water derived from precipitation at an approximate elevation of 3500 m above sea level, indicating that La Palma reached this height when the gabbro complexes were formed. The unaltered hydrogen and oxygen isotope compositions of amphiboles show a trend from normal mantle ranges to -90‰ and 5.1‰, respectively; these values are very close to compositions found in other Canary Island complexes by earlier studies, and support the theory that these compositions reflect a plume component originating from depth, rather than local phenomena.

UR - http://www.scopus.com/inward/record.url?scp=38349145338&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38349145338&partnerID=8YFLogxK

U2 - 10.1144/SP293.8

DO - 10.1144/SP293.8

M3 - Chapter

AN - SCOPUS:38349145338

SN - 9781862392427

VL - 293

T3 - Geological Society Special Publication

SP - 155

EP - 175

BT - Geological Society Special Publication

ER -