Contributions to the chronology of the Basal Complex of Fuerteventura, Canary Islands

K. Balogh, A. Ahijado, R. Casillas, C. Fernández

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

K-Ar and Ar-Ar analyses of the Basal Complex of Fuerteventura confirm the early start of magmatism in the Late Cretaceous. Plateau ages of 63.1 ± 0.8 Ma and 64.2 ± 1.0 Ma have been obtained for the oldest syenite intrusions indicating the minimum age of these plutonics. The emplacement of carbonatites and syenites along ductile shear zones took place during a relatively short period of time between 23.2 ± 1.0 and 22.1 ± 0.9 Ma. This episode is synchronous all over the island. Younger plutons were intruded around 21.1 ± 0.8 Ma ago and 20.7 ± 0.9 Ma and are probably related to the building of Miocene subaerial edifices. Almost all the minerals and rocks of the Basal Complex show a clear effect of excess argon. Some was acquired during the hydrothermal stage but also some excess argon was trapped during the early crystallization stage of the magma. Moreover, only a part of the radiogenic Ar which had accumulated in pre-Miocene rocks was released during the Miocene magmatism.

Original languageEnglish
Pages (from-to)81-101
Number of pages21
JournalJournal of Volcanology and Geothermal Research
Volume90
Issue number1-2
Publication statusPublished - May 1999

Fingerprint

Canary Islands
chronology
Argon
Rocks
Miocene
argon
rocks
syenite
magmatism
Crystallization
intrusion
magma
Minerals
plateaus
minerals
crystallization
shear
rock
pluton
shear zone

Keywords

  • Carbonatites
  • Magmatism
  • Syenites

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Contributions to the chronology of the Basal Complex of Fuerteventura, Canary Islands. / Balogh, K.; Ahijado, A.; Casillas, R.; Fernández, C.

In: Journal of Volcanology and Geothermal Research, Vol. 90, No. 1-2, 05.1999, p. 81-101.

Research output: Contribution to journalArticle

@article{9a248d5fcd9b459c8b8ff2c5e6722adb,
title = "Contributions to the chronology of the Basal Complex of Fuerteventura, Canary Islands",
abstract = "K-Ar and Ar-Ar analyses of the Basal Complex of Fuerteventura confirm the early start of magmatism in the Late Cretaceous. Plateau ages of 63.1 ± 0.8 Ma and 64.2 ± 1.0 Ma have been obtained for the oldest syenite intrusions indicating the minimum age of these plutonics. The emplacement of carbonatites and syenites along ductile shear zones took place during a relatively short period of time between 23.2 ± 1.0 and 22.1 ± 0.9 Ma. This episode is synchronous all over the island. Younger plutons were intruded around 21.1 ± 0.8 Ma ago and 20.7 ± 0.9 Ma and are probably related to the building of Miocene subaerial edifices. Almost all the minerals and rocks of the Basal Complex show a clear effect of excess argon. Some was acquired during the hydrothermal stage but also some excess argon was trapped during the early crystallization stage of the magma. Moreover, only a part of the radiogenic Ar which had accumulated in pre-Miocene rocks was released during the Miocene magmatism.",
keywords = "Carbonatites, Magmatism, Syenites",
author = "K. Balogh and A. Ahijado and R. Casillas and C. Fern{\'a}ndez",
year = "1999",
month = "5",
language = "English",
volume = "90",
pages = "81--101",
journal = "Journal of Volcanology and Geothermal Research",
issn = "0377-0273",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Contributions to the chronology of the Basal Complex of Fuerteventura, Canary Islands

AU - Balogh, K.

AU - Ahijado, A.

AU - Casillas, R.

AU - Fernández, C.

PY - 1999/5

Y1 - 1999/5

N2 - K-Ar and Ar-Ar analyses of the Basal Complex of Fuerteventura confirm the early start of magmatism in the Late Cretaceous. Plateau ages of 63.1 ± 0.8 Ma and 64.2 ± 1.0 Ma have been obtained for the oldest syenite intrusions indicating the minimum age of these plutonics. The emplacement of carbonatites and syenites along ductile shear zones took place during a relatively short period of time between 23.2 ± 1.0 and 22.1 ± 0.9 Ma. This episode is synchronous all over the island. Younger plutons were intruded around 21.1 ± 0.8 Ma ago and 20.7 ± 0.9 Ma and are probably related to the building of Miocene subaerial edifices. Almost all the minerals and rocks of the Basal Complex show a clear effect of excess argon. Some was acquired during the hydrothermal stage but also some excess argon was trapped during the early crystallization stage of the magma. Moreover, only a part of the radiogenic Ar which had accumulated in pre-Miocene rocks was released during the Miocene magmatism.

AB - K-Ar and Ar-Ar analyses of the Basal Complex of Fuerteventura confirm the early start of magmatism in the Late Cretaceous. Plateau ages of 63.1 ± 0.8 Ma and 64.2 ± 1.0 Ma have been obtained for the oldest syenite intrusions indicating the minimum age of these plutonics. The emplacement of carbonatites and syenites along ductile shear zones took place during a relatively short period of time between 23.2 ± 1.0 and 22.1 ± 0.9 Ma. This episode is synchronous all over the island. Younger plutons were intruded around 21.1 ± 0.8 Ma ago and 20.7 ± 0.9 Ma and are probably related to the building of Miocene subaerial edifices. Almost all the minerals and rocks of the Basal Complex show a clear effect of excess argon. Some was acquired during the hydrothermal stage but also some excess argon was trapped during the early crystallization stage of the magma. Moreover, only a part of the radiogenic Ar which had accumulated in pre-Miocene rocks was released during the Miocene magmatism.

KW - Carbonatites

KW - Magmatism

KW - Syenites

UR - http://www.scopus.com/inward/record.url?scp=0032724763&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032724763&partnerID=8YFLogxK

M3 - Article

VL - 90

SP - 81

EP - 101

JO - Journal of Volcanology and Geothermal Research

JF - Journal of Volcanology and Geothermal Research

SN - 0377-0273

IS - 1-2

ER -