Magmatic and tectonic history of Jurassic ophiolites and associated granitoids from the South Apuseni Mountains (Romania)

Swiss Journal of Geosciences

Table 3 ²⁰⁶Pb/²³⁸U ages of Apuseni ophiolitic rocks and associated granitoids and volcanic equivalents

Sample	Rock type	Igneous suite	Locality	²⁰⁶Pb/²³⁸U age ± 2σ	N	N*	MSWD
DG063	Diorite	Ophiolite	Săvârşin	155.9 ± 2.54	47	39	1.3
DG064	Gabbro	Ophiolite	Săvârşin	157.7 ± 2.57	50	38	1.3
DG082	Gabbro	Ophiolite	Căzăneşti	158.2 ± 2.54	46	41	1.1
DG068	Gabbro	Ophiolite	Cerbia	158.9 ± 2.75	24	19	1.5
DG072	Granite	IAG	Cerbia	152.9 ± 2.49	34	25	1.1
DG081	Andesite	IAG	Birtin	154.5 ± 2.50	45	35	1.2
DG062	Granodiorite	IAG	Săvârşin	158.6 ± 2.52	41	25	2.3
DG067	Rhyolite	IAG	Săvârşin	155.0 ± 2.49	50	20	3.3
DG069	Granodiorite	IAG	Cerbia	154.8 ± 2.47	46	21	3.5

²⁰⁶Pb/²³⁸U ages are weighted average ages calculated with Isoplot 3.75 (Ludwig 2012). The total uncertainty of the ages is at 2σ level and comprises internal and propagated external errors. N number of zircons of the sample analysed; N* number of zircons used for the age calculation