List of Figures

1. Tectonic map and block-diagram of the Aosta valley and surrounding areas
2. Cross section and lithospheric interpretation of the Western Alps
3. Itinerary 1
4. Eclogitized migmatite near Rifugio Città di Mantova
5. Eclogitized migmatite of Rifugio Città di Mantova
6. Eclogitized migmatite of Rifugio Città di Mantova
7. Eclogitized migmatite of Rifugio Città di Mantova
8. Fine-grained eclogite
9. Panoramic view from Stolemberg
10. Contact between Monte Rosa Basement and Zermatt-Saas ophiolite
11. Stolemberg-Col d’Olen section
12. Alternating layers of leucosome melanosome
13. Rodingitised metabasite
14. Large garnet porphyroclasts
15. Panoramic view towards Lago Gabiet
16. Eclogite-facies Sesia-Lanzo rocks at Lillianes
17. Contact between Micascisti eclogitici and lamprophyric dyke
18. Itinerary 2
19. Panoramic view from the road at Druges
20. Remains of the old foundry at Treves
21. Huge slag cumulus
22. Piece of slag from the ancient Servette mine
23. Lithological map of the lower St Marcel valley
24. Talcschists
25. Glaucophanite
26. Mineralised quartzite
27. Map of Servette mine
28. Servette rodingite
29. Map and section of Servette mine
30. Panoramic view
31. Entrance of Praborna mine
32. Praborna: piemontite crystals in quartzite
33. Piemontite- and braunite-rich quartzites
34. Clinopyroxene+garnet-rich quartzite band
35. Garnet-bearing Mn-rich quartzite
36. Retrogression of alurgite
37. Retrogression of alurgite
38. Retrogression of violan
39. Retrogression of violan
40. Retrogression of violan
41. Abandoned village and mine of Chuc
42. Green fountain (Acqua Verde)
43. Itinerary 3
44. View northwards from Gillaray
45. Panoramic view
46. Simplified geologic map
47. Garnet in quartz-rich metasediments
48. Eclogite boudinaged in metasediments
49. Deformed reaction rim
50. Reaction rim
51. Fine-grained metatroctolite
52. Coronitic troctolite
53. Partially eclogitized troctolite
54. Eclogitized troctolite
55. Partially eclogitized gabbro
56. Multilayered corona developing between olivine and plagioclase
57. Corona between augitic clinopyroxene and plagioclase
58. Panoramic view from Testa Grigia towards the SW
59. Panoramic view from Testa Grigia towards Switzerland
60. Authors ready to climb Piramide Vincent
  Index