Abstract
Forty-six new K-Ar age determinations are presented on whole rock samples and mineral separates from volcanic and subvolcanic rocks of Gran Canaria. The main subaerial shield building basaltic volcanism with estimated volume of about 1000 km3 was confined to the interval about 13.7 m.y. to 13.5 m.y. ago in the middle Miocene. Substantial volume (∼100 km3) of silicic volcanics (trachyte and peralkaline rhyolite) were erupted with no detectable time break following the basaltic volcanism, essentially contemporaneous with formation of a large collapse caldera at 13.4±0.3 m.y. ago. Trachytic to phonolitic volcanism continued intermittently in the waning states of activity until about 9 m.y. ago.
Following a long hiatus there was resurgence of volcanism with eruption of about 100 km3 of basanitic to hauyne phonolitic rocks of the Roque Nublo Group between about 4.4 m.y. and 3.4 m.y. ago in the Pliocene. After a hiatus of less than 1.0 m.y., olivine nephelinite magmas were erupted and this activity continued intermittently until relatively recent times, the younger eruptives being mainly basanitic in composition. The volume of volcanic products in this phase probably does not exceed 10 km3. Thus the volume of all the resurgent volcanism comprises less than 10 percent of the subaerially exposed part of Gran Canaria.
The results show that the subaerial main shield building phase of volcanism in Gran Canaria, consisting of mildly alkali to transitional basalts, occurred over a time interval that was less than 0.5 m.y. Magmatic evolution on Gran Canaria appears to be similar to that found on other basaltic volcanoes in oceanic regions. Thus volcanoes in the Hawaiian, Marquesas and Society Islands all were built by basaltic lavas in similar short-lived episodes of volcanism. In some Hawaiian volcanoes, a resurgent phase of volcanism of strongly undersaturated basalts of small volume is recognized following a long hiatus, again similar to that found on Gran Canaria. The relatively large volume of silicic lavas erupted in Gran Canaria immediately following the main basaltic shield building phase is, however, not matched in the Pacific volcanoes mentioned.
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References
Abdel-Monem, A., Watkins, N. D. andGast, P. W., 1971,Potassium-argon Ages, Volcanic Stratigraphy, and Geomagnetic Polarity History of the Canary Islands: Lanzarote, Fuerteventura, Gran Canaria, and La Gomera. Am. J. Sci.,271, p. 490–521.
—————, ————— —————, 1972,Potassium-argon Ages, Volcanic Stratigraphy and Geomagnetic Polarity History of the Canary Islands: Tenerife, La Palma and Hierro. Am. J. Sci.,272, p. 805–825.
Anguita, F. andHernan, F., 1975,A Propagating Fracture Model versus Hot Spot Origin for the Canary Islands. Earth Planet. Sci. Lett.,27, p. 11–19.
Baksi, A. K., 1974,Isotopic Fractionation of a Loosely Held Atmospheric Argon Component in the Picture Gorge Basalts. Earth Planet. Sci. Lett.,21, p. 431–438.
Berggren, W. A. andVan Couvering, J. A. 1974,The Late Neogene. Biostratigraphy, Geochronology and Paleoclimatology of the Last 15 million Years in Marine and Continental Sequences. Palaeogeogr., Palaeoclimatol., Palaeoecol.,16, p. 1–216.
Bosshard, E. andMacfarlane, D. J., 1970.Crustal Structure of the Western Canary Islands from Seismic Refraction and Gravity Data. J. Geophys. Res.,75, p. 4901–4918.
Bourcart, J. andJeremine, E., 1937,La Grande Canarie. Bull. Volcanol.,2, p. 1–77.
Dash, B. P. andBosshard, E., 1969,Seismic and Gravity Investigations around the Western Canary Islands. Earth Planet. Sci. Lett.,7, p. 169–177.
Duncan, R. A. andMcDougall, I., 1974,Migration of Volcanism with Time in the Marquesas Islands, French Polynesia. Earth Planet. Sci. Lett.,21, p. 414–420.
————— —————, 1976,Linear Volcaninsm in French Polynesia. J. Volcanol. Geotherm. Res.,1, p. 191–227.
Fuster, J. M., Hernandez-Pacheco, A., Muñoz, M., Rodringuez Badiola, E. andGarcia Cacho, L., 1968,Geology and Volcanology of the Canary Islands, Gran Canaria. Inst. Lucas Mallada, Madrid, p. 1–243.
Gramlich, J. W., Lewis, V. A. andNaughton, J. J., 1971,Potassium-argon Dating of Holocene Basalts of the Honolulu Series. Geol. Soc. Am. Bull.,82, p. 1399–1404.
Green, D. H., 1971,Composition of Basaltic Magmas as Indicators of Origin: Application to Oceanic Volcanism. Phil. Trans. R. Soc. London. Ser. A.,268, p. 707–725.
Hausen, H., 1962,New Contributions to the Geology of Gran Canaria. Soc. Sci. Fenn. Comm. Phys. Math.,27, p. 1–418.
Heirtzler, J. R. andHayes, D. E., 1967,Magnetic Boundaries in the North Atlantic Ocean. Science,157, p. 185–187.
Lietz, J. andSchmincke, H-U., 1975,Miocene-Pliocene Sea-level Changes and Volcanic Phases on Gran Canaria (Canary Islands) in the Light of New K-Ar Ages. Palaeogeogr., Palaeoclimatol., Palaeoecol.,18, p. 213–239.
McDougall, I., 1964,Potassium-argon Ages from Lavas of the Hawaiian Islands. Geol. Soc. Am. Bull.,75, p. 107–128.
—————, 1971a, The Geochronology and Evolution of the Young Volcanic Island of Reunion, Indian Ocean. Geochim. Cosmochim. Acta,35, p. 261–288.
—————, 1971b, Volcanic Island Chains and Sea Floor Spreading. Nature Phys. Sci.,231, p. 141–144.
————— andChamalaun, F. H., 1969,Isotopic Dating and Geomagnetic Studies on Volcanic Rocks from Mauritius, Indian Ocean. Geol. Soc. Am. Bull.,80, p. 1419–1442.
————— andStipp, J. J., 1969,Excess Radiogenic Argon in Young Subaerial Basalts from the Auckland Volcanic Field, New Zealand. Geochim. Cosmochim.Acta, 33, p. 1485–1520.
————— andKristjansson, L., 1976,Geochronology and Paleomagnetism of a Miocene-Pliocene Lava Sequence at Bessastadaa, Eastern Iceland. Am. J. Sci.276, p. 1078–1095.
Rona, P. A., Brakl, J. andHeirtzler, J. R.,Plumes and Plate Motions. Bull. Am. Assoc. Petrol. Geol.,56, p. 203–213.
Rona, P. A., Brakl, J. andHeirtzler, J. R., 1970,Magnetic Anomalies in the Northeast Atlantic between the Canary and Cape Verde Islands. J. Geophys. Res.,75, p. 7412–7420.
Schmincke, H-U., 1967,Cone Sheet Swarm, Resurgence of Tejeda Caldera, and the Early Geologic History of Gran Canaria. Bull. Volcanol.,31, p. 153–162.
—————, 1968,Faulting versus Erosion and the Reconstruction of the mid-Miocene Shield Volcano of Gran Canaria. Geol. Mitt.,8, p. 23–50.
—————, 1969,Ignimbrite Sequence on Gran Canaria. Bull. Volcanol.,33, p. 1199–1219.
—————, 1973,Magmatic Evolution and Tectonic Regime in the Canary, Madeira, and Azores Island Groups. Geol. Soc. Am. Bull.,84, p. 633–648.
—————, 1976,The Geology of the Canary Islands, p. 67–184in G. Kunkel (Editor)Biogeography and Ecology in the Canary Islands. Junk, the Hague.
Turcotte, D. L. andOxburgh, E. R., 1973,Mid-plate Tectonics. Nature,244, p. 337–339.
Upton, B. G. J. andWadsworth, W. J., 1966,The Basalts of Reunion Island, Indian Ocean. Bull. Volcanol.,29, p. 7–24.
Wilson, J. T., 1963,A Possible Origin of the Hawaiian Islands. Can. J. Phys.,41, p. 863–870.
York, D., 1969,Least Squares Fitting of a Straight Line with Correlated Errors. Earth Planet. Sci. Letters,5, p. 320–324.
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McDougall, I., Schmincke, H.U. Geochronology of Gran Canaria, Canary Islands: Age of shield building volcanism and other magmatic phases. Bull Volcanol 40, 57–77 (1976). https://doi.org/10.1007/BF02599829
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DOI: https://doi.org/10.1007/BF02599829