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Museo San Salvatore Showcase N° 1 Showcase N° 2 Showcase N° 3 Showcase N° 5 San Salvatore Arbostora San Giorgio Mendrisiotto The showcase is ded- The showcase displays On the opposite sho - In order to round off icated to the dolomite of evidence illustrating a south- re of the Lugano Lake in our tour of the Monte the San Salvatore, a rock ward geological continuati- a southward direction, San Salvatore area, which has never been on, from Monte San Salvatore it is possible to see a men tion must be made used in large-scale con- to Arbostora. It includes quite fine cone-shaped moun - of the Mendrisiotto area struction work due to exclusively Permian volcanic tain; this is Monte San with fossil samples Splitted Dolomite the fact that it is cracked, as can be seen from a cross- Amethyst sceptre rocks ( 280 – 225 million years ago) commonly Neusticosaurus, Giorgio, now included in the list of Unesco’s protect- from the Breggia (now a from San Salvatore sectioned block. This means that after being cru - quartz, known as vulcanite, composed of dark porphyrite, from Monte ed sites, and, regarding the Triassic period (from 225 protected park), lom- showing from Madonna San Giorgio very clearly shed, it was used as hardcore, gravel, calcined dolo- d’Ongero quartz tuff porphyry, red quarz porphyry and Carona to 190 million years ago), one of the world’s most bard red ammo nites the fissuring mia, semi-calcined dolomia, or in powder form as granophyre - Madonna d’Ongero granophyre. It was known as studied places. from Monte Ge neroso, of the rocks dressing in the San Martino furnace, as well as in car- in Carona porphyry and it was especially used in the building In the famous bituminous shale band, many ani- several types of mar ble bonic acid using electric calcination (Gottardo industry, as cobbles for paving roads and also as mal fossils have been discovered: the most part of from the Arzo quarries Factory at Bodio). gravel in garden paths. theme were marine or amphibious creatures, rang- and the biancone The dolomite of the San Salvatore is part of a coral Granophyre is well-known to mineral hunters and ing from invertebrates to fish, amphibians, reptiles known as Bar lerna, as reef which separated the San Giorgio lagoon from collectors on account of the wide variety of small and and some plants as well. The Museo cantonale di sto- well as almost pure the deep sea, 225 million years ago. rare minerals that it contains in the miarolithite. ria naturale has been given responsibility for scien- limestone used to make In the same showcase there are two sections of Dark porphyrite was extracted from the large tific research together with Institute of Palae on - cement containing nod- the San Martino conglomerate, usually called Ser - Melide quarry in order to fill the dyke-bridge linking tology of the University of Zurich. The showcase ules of marcasite. vino, of a wine-red colour, which recent studies at- Melide and Bissone, for construction of the suppor- contains several fossils, ammonite, daonella, fish, Above: tribute to the Upper Anisian era, 230 million years Areal View ting walls and as hardcore for the railway line. saurians and bituminous shale. Ammonite, of the Lake Lugano ago. This rock was used for the tunnel portals and from the Showcase N° 6 Region with “Biancone” in the the underground passages of the Swiss Federal Rail - Monte San Salvatore Showcase N° 4 Breggia Park The space in the middle of the room is used for ways (FFS), then known as “Gotthardbahn”. and Arbostora Malcantone special exhibitions; at the moment it is reserved for Below: At the foot of the mountain, in the Noranco area, This showcase con- Marble geological section of the San Gottardo motorway there were enormous deposits of clay which gave tains samples of Insu - from the Arzo tunnel as well as several samples of rock starting birth to a flourishing brick-making factory, which bria crystalline rocks quarries, called from the South Portal heading north, extracted when Macchiavecchia disappeared long time ago. and minerals (over 300 the famous alpine tunnel was dug. million years ago) found in the Malcan tone met- Aragonite, al-bearing mountains, which during the last century from and up to the beginning of the Second World War the Arosio valley above Manno gave birth to the famous gold mines in the Sessa- Astano municipalities as well as several exploratory mines dug at Miglieglia, Aranno and Monte Torri in the search for iron. From Basso Malcantone we have samples of aragonite found in the Vallone di Arosio area and in Section the lower part of the Manno territory samples of the of the S.Martino Carboniferous conglomerate (345 – 280 million conglomerate, also called Servino. years ago) bearing witness to the presence of dense Inte rmediate rock equatorial rainforests, representing the oldest Ticino between dolomite fossils. and metamorphic rock