+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, northern Turkey



Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, northern Turkey



Contributions to Mineralogy and Petrology 58(1): 63-81



Analytical data for Sr, Rb, Cs, Ba, Pb, rare earth elements, Y, Th, U, Zr, Hf, Sn, Nb, Mo, Ni, Co, V, Cr, Sc, Cu and major elements are reported for eocene volcanic rocks cropping out in the Kastamonu area, Pontic chain of Northern Turkey. SiO2% versus K2O% relationship shows that the analyzed samples belong to two major groups: the basaltic andesitic and the andesitic ones. High-K basaltic andesites and low-K andesites occur too. Although emplaced on continental type basement (the North Anatolian Crystalline Swell), the Pontic eocene volcanics show elemental abundances closely comparable with typical island arc calc-alkaline suites, e.g. low SiO2% range, low to moderate K2O% and large cations (Cs, Rb, Sr, Ba, Pb) contents and REE patterns with fractionated light and almost flat heavy REE patterns. REE and highly charged cations (Th, U, Hf, Sn, Zr) are slightly higher than typical calc-alkaline values. Ferromagnesian elements show variable values. Within the basaltic andesite group the increase of K%, large cations, REE, La/Yb ratio and high valency cations and the decrease of ferromagnesian element abundances with increasing SiO2% content indicate that the rock types making up this group developed by crystalliquid fractionation of olivine and clinopyroxene from a basic parent magma. Trace element concentration suggest that the andesite group was not derived by crystal-liquid fractionation processes from the basaltic andesites, but could represent a distinct group of rocks derived from a different parent magma.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 019006197

Download citation: RISBibTeXText

DOI: 10.1007/bf00384745


Related references

Study on isotopic geochemistry of Cenozoic high-K calc-alkaline volcanic rocks in the Zuerkengwula Mountain area, northern Xizang, China. Kuangwu Yanshi = Journal of Mineralogy and Petrology 24(4): 59-64, 2004

Geochemistry of coexisting alkaline and calc-alkaline volcanic rocks from northern Azerbaijan (N.W. Iran). Journal of Volcanology and Geothermal Research 11(2): 253-275, 1981

Geochemistry of late Miocene to Recent alkaline and calc-alkaline volcanic rocks of the Tuxtla volcanic field, Veracruz, Mexico. Abstracts with Programs - Geological Society of America 21(6): 14, 1989

Mineral chemistry and petrochemistry of Tertiary calc-alkaline volcanic rocks in the Ikizce Ordu area, northeastern Turkey. Yerbilimleri 26(1): 25-47, 2005

Almandine garnet in calc-alkaline volcanic rocks of the northern Pannonian Basin (Eastern-Central Europe); geochemistry, petrogenesis and geodynamic implications. Journal of Petrology: 0, Pages 1813-1843. 2001., 2001

Geochemistry and tectonic environment of Mesozoic-Cenozoic high-K calc-alkaline volcanic rocks in the Tanggula Depression, northern Xizang (Tibet), China. Dizhi Diqiuhuaxue = Geology-Geochemistry 1997(1): 32-36, 1997

Geochemistry, petrography and tectonic significance of the ophiolitic rocks, felsic intrusions and Eocene volcanic rocks of an imbrication zone (Helete area, Southeast Turkey). Journal of African Earth Sciences 107: 89-107, 2015

The petrology and geochemistry of volcanic rocks from the northern Harsit River area, Pontid volcanic province, Northeast Turkey. Journal of Volcanology and Geothermal Research 6(1-2): 105-123, 1979

Mineral chemistry of barium-and titanium-bearing biotites in calc-alkaline volcanic rocks from the Mezitler area Balikesir-Dursunbey, western Turkey. Geochemical Journal 36(6): 563-580, 2002

Mineralogy, geochemistry, and magma genesis of calc-alkaline and alkaline Cenozoic volcanic rocks of southern Colombia. Zentralblatt fuer Geologie und Palaeontologie, Teil I: Allgemeine, Angewandte, Regionale und Historische Geologie 1989(5-6): 1087-1103, 1989

Geochemistry of Oligocene calc-alkaline volcanic rocks of the Needles Range Group, Indian Peak volcanic field, Utah and Nevada. Abstracts with Programs - Geological Society of America 20(7): 315, 1988

Epithermal-alteration geology, mineralogy and geochemistry of Eocene volcanic rocks in the Hasanda (Giresun) area, eastern Pontides, NE Turkey. Neues Jahrbuch Fü R Mineralogie - Abhandlungen 190(1): 79-99, 2013

Contrasting complexities in the evolution of calc-alkaline and alkaline melts of the Nigde volcanic rocks, Turkey; textural, mineral chemical and geochemical evidence. European Journal of Mineralogy 20(1): 101-118, 2008

Benthonic foraminiferal assemblages and microfacies analysis of Paleocene-Eocene carbonate rocks in the Kastamonu region, northern Turkey. Journal of Asian Earth Sciences 25(3): 403-417, 2005

Geochemistry of calc-alkaline volcanic rocks from southeastern Iran (Kouh-e-Shahsavaran). Journal of Volcanology and Geothermal Research: 4, Pages 363-373. 1978., 1978