|Latitude & Longitude (WGS84):||44° 9' 1'' North , 10° 58' 53'' East|
|Latitude & Longitude (decimal):||44.15031,10.98161|
|Köppen climate type:||Cfb : Temperate oceanic climate|
|Name(s) in local language(s):||Gallerie e tagli della Ferrovia Porrettana, Siti del quarzo di Porretta, Porretta Terme, Alto Reno Terme, Valle del Reno, Provincia di Bologna, Emilia-Romagna, Italia|
Porettana Railway tunnels and cuts between Porretta Terme and Pracchia (Pistoia Province, Tuscany).
The railway excavations to the south of Porretta Terme, carried out in the first half of the 1860s, were the most prolific source of specimens among the historical Porretta quartz sites (Bombicci, 1869 and 1874). Particularly prolific was the Madonna del Ponte tunnel just to the south of Porretta Terme (the coordinates indicate the north portal), that yielded a large number of high-quality specimens including a large crystal aggregate weighing more than 14 kg.
1 valid mineral.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Eocene - Jurassic|
33.9 - 201.3 Ma
66 - 145 Ma
|Mesozoic sedimentary rocks|
Age: Cretaceous (66 - 145 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.