6533b827fe1ef96bd12865d7

RESEARCH PRODUCT

An anorogenic pulse in a typical orogenic setting: The geochemical and geochronological record in the East Serbian latest Cretaceous to Palaeocene alkaline rocks

Albrecht Von QuadtKristina ŠArićDejan PrelevićDejan PrelevićFranz NeubauerJohann GenserVolker HöckVladica Cvetković

subject

Olivine010504 meteorology & atmospheric sciencesbiologyGeochemistryGeologyengineering.material010502 geochemistry & geophysicsbiology.organism_classification01 natural sciencesBasaniteIgneous rockGeochemistry and PetrologyTephriteMagmatismengineeringLithophileMaficLileGeology0105 earth and related environmental sciences

description

Abstract This study focuses on the East Serbian latest Cretaceous to Palaeocene Mafic Alkaline Rocks (hereafter, ES-MAR). This alkaline magmatism developed along the Eurasian border after the closure of the Mesozoic Tethys in the Balkan sector. Olivine(± clinopyroxene)-phyric and olivine- and nepheline-normative basanite, tephrite and theralite rocks are studied using Ar/Ar ages and major elements, trace elements and Sr–Nd–Pb isotopes. The ES-MAR are geochemically similar to other alkaline rocks of the Circum-Mediterranean Anorogenic Cenozoic Igneous (CiMACI) province, showing elevated contents of high field strength elements (HFSE) (e.g., Nb = 50–100 ppm) and high HFSE/LILE (large ion lithophile elements) ratios coupled with relatively low 87Sr/86Sri (mostly 0.7028–0.7040) and high 143Nd/144Ndi (mostly > 0.5127). In contrast to the majority of CiMACI rocks, the ES-MAR exhibit low 206Pb/204Pbi (

10.1016/j.lithos.2013.08.013http://dx.doi.org/10.1016/j.lithos.2013.08.013