IN THE FOOTSTEPS OF VON HUMBOLDT DISCOVERING CENTRAL LIGURIA GEOLOGY
DOI:
https://doi.org/10.15167/2612-2960/BELS2020.2.1.1232Keywords:
Sestri-Voltaggio Zone, ophycarbonate rocks, limestoneAbstract
Alexander von Humboldt (1769 – 1859) was a versatile scholar, who had a holistic approach to nature: he could be defined an explorer of the natural world.Among his interests, geology played an important role. Humboldt visited Liguria twice, aiming at studying the rocks, and in particular the outcrops of central Liguria which, at the beginning of the 19th century, were along the only vehicular road connecting Genova with the Po plain. Here he observed many different and contrasting lithologies, either of ophiolitic or carbonatic nature, and gave proof of his great analytical and synthesis skills. The geologic area he visited, known in literature as the “Sestri-Voltaggio Zone”, has long been the object of scientific debate because it has been considered a possible limit between the Alps and the Apennines.
References
Capponi G. & Crispini L. (con la collaborazione di Bonci M.C., Cabella R., Cavallo C., Cortesogno L., Fabbri B., Federico L., Firpo M., Gaggero L., Nosengo S., Ottonello G., Piazza M., Perilli N., Piccazzo M., Ramella A., Spagnolo C., Vannucci G. & Vetuschi Zuccolini M.), 2008. Note Illustrative del Foglio 213 - 230 “Genova” della Carta Geologica d'Italia alla scala 1:50.000. Apat - Regione Liguria, Selca, Firenze.
Cortesogno L., Grandjacquet C. & Haccard D., 1979. Contribution à l'étude de la liaison Alpes-Appennins. Evolution tectono-métamorphique des principaux ensembles ophiolitiques de Ligurie (Appennins du Nord). Ofioliti 4: 157–172.
Cortesogno L. & Haccard D., 1984. Note illustrative alla Carta geologica della zona Sestri - Voltaggio. Mem. Soc. Geol. It. 28: 115–150.
Desmons J., Compagnoni R. & Cortesogno L., 1999. Alpine metamorphism of the Western Alps: II. High P/T and related pre-greenschist metamorphism. Schweiz. Mineral. Petrogr. Mitt. 79: 111–134.
Hoogerduijn Strating E.H., 1991. The evolution of the Piemonte–Ligurian ocean. A structural study of ophiolite complexes in Liguria (NW Italy). PhD Thesis University of Utrecht, 127 pp.
Molli G., Crispini L., Malusà M.G., Mosca P., Piana F. & Federico L., 2010. Geology of the Western Alps-Northern Apennine junction area: a regional review. In: Beltrando, M., Peccerillo, A., Mattei, M., Conticelli, S., Doglioni, C. (Eds.), The Geology of Italy: Tectonics and Life along Plate Margins. J. Virtual Explor. 36. Paper 10.
Rovereto G., 1939. Liguria Geologica. Mem. Soc. Geol. It., 2: 743 pp., Roma.
Sacco F., 1887. Studio geologico dei dintorni di Voltaggio. Atti R. Acc. Sc. Torino 22: 613–627, Torino.
Wulf A., 2017. L’invenzione della natura. Le avventure di Alexander von Humboldt, l’eroe perduto della scienza. Luiss University Press. ISBN: 978-88-6105-276-5
