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Table 3 Compilation of isotopic age dates of rock units in the Aiguilles Rouges and Mont Blanc massifs

From: U–Pb zircon provenance of Triassic sandstones, western Swiss Alps: implications for geotectonic history

Zircon bearing unit* Zircon age (Ma) References
Igneous units   
 Aiguilles Rouges massif   
  Salvan-Dorenzaz basin   Capuzzo and Bussy (2000)
  Tuffs 295 +3/-4  
  Dorénaz dacite volcanic 308 ± 3  
  Rhyolitic dike 311 ± 17  
  Morcles microgranite 303 ± 2 Grosjean et al. (2018)
  309–312  
  Vallorcine granite 306.5 ± 1.5 Bussy et al. (2000)
  Fully gabbros 307 ± 2  
  Porménaz granite 332 ± 2  
  Montées Pélissiers granite 331 ± 2  
Mont Blanc massif   
Mont Blanc granite 303 ± 2 Bussy et al. (2000)
Montenvers granite 307 ± 3  
Mont Blanc rhyolite 307 ± 2 Capuzzo and Bussy (2000)
Lognan granite 453 ± 3 Bussy and von Raumer (1994)
 Polymetamorphic basement   
  Aiguilles Rouges massif   
  Emosson leucosome 320 ± 1* Bussy et al. (2000)
  Emosson micaschists 327 ± 2*  
  Garnet gneisses ~300–330* Schulz and von Raumer (2011)
  Mylonitic garnet gneisses ~440*  
  Eclogite 453 +3/− 2 Paquette et al. (1989)
  Lake Cornu augengneiss 455 +3/− 4 Bussy et al. (2011)
  Mt Lusin orthogneiss 455.3 ± 0.6  
  Eclogitic amphibolite 458 ± 5  
  Val Bérard orthogneiss 461 +3.5/− 4.5  
  Banded eclogite 463 +3/− 2  
  Val Bérard augengneiss 464 +5/− 3  
  1. All dates are from zircons except for metamorphic dates (*) which are from monazite