Geochemical and Sr-Nd-Pb isotopic characteristics of Late Cenozoic leucite lamproites from the East European Alpine belt (Macedonia and Yugoslavia)

Late Miocene to Pleistocene potassic volcanism in the Republic of Macedonia

“…In the literature these rocks have been classified as UK rocks with lamproitic affinity (e.g. Prelević et al 2005;Cvetković et al 2004;Altherr et al 2004). …”

“…Although the rocks of this group have been considered lamproites, mainly on a mineralogical basis, i.e. the absence of plagioclase (Altherr et al 2004), or on a chemical basis, i.e. CaO vs MgO diagram ), we consider them to have a Roman Type (Group III of Foley et al 1987)-affinity because of their CaO/SiO 2 and CaO/ Al 2 O 3 ratios ( Fig.…”

“…The dashed line between alkaline and subalkaline rocks of Irvine and Baragar (1971) is also plotted. Literature data for this diagram and the following ones are from Altherr et al (2004) and Cvetković et al (2004) Foley et al (1987). The line separating sodic and potassic rocks was drawn according to Le Maitre (1989).…”

“…The ultrapotassic volcanism of southern Serbia and Macedonia has been the object of several recent studies mainly addressing its geochemical and petrological characteristics (Boev and Lepitkova 1991;Cvetković et al 2004Cvetković et al , 2007Altherr et al 2004;Prelević et al 2001Prelević et al , 2005Boev and Yanev 2001;Yanev et al 2003). This paper describes the temporal and spatial evolution of the potassic and ultrapotassic rocks erupted since the Late Miocene to Pleistocene from the Scutari-Peć fault zone down to the southernmost part of Macedonia, to the volcanic KozufVoras Massif at the border between Macedonia and Greece.…”

The Th/La and Sm/La conundrum of the Tethyan realm lamproites

“…The magmas produced represent one of the most impressive features of the geodynamic evolution of the Mediterranean-Himalayan orogenic belts, and are characterised by significant petrological, geochemical and isotopic variety ranging from subductionrelated signatures with calc-alkaline, shoshonite and ultrapotassic magmas, to within-plate signatures with OIB-like magmas (e.g. Altherr et al, 2004Altherr et al, , 2008Chung et al, 2005;Conticelli et al, 2009;Dilek and Altunkaynak, 2007;Duggen et al, 2004;Gao et al, 2007;Harangi et al, 2006;Innocenti et al, 2005;Lustrino and Wilson, 2007;Miller et al, 1999;Topuz et al, 2005;Turner et al, 1996;Williams et al, 2004;Wilson and Bianchini, 1999).…”