The thrown stones explained

The Thrown Stones
Alt Name:Italian: Pietre lanciate
Nearest City:Bolsena, Italy
Coordinates:42.6326°N 11.9972°W

The Thrown Stones (Italian: pietre lanciate) is a geological formation of columnar basalt, prisms of volcanic rock rising from the ground, located near Bolsena, Italy.

The shape of the thrown stones has caught the curiosity of many travelers going to Rome. About a kilometer from the town of Bolsena, which leads to Montefiascone along the Cassia, you can observe a columnar basalt rock formation: naturally-formed prisms of volcanic rock.[1] [2] [3] [4] [5]

Etymology

The “thrown stones” the popular term, which is commonly referred to these particular rocks, was coined by the locals in an attempt to understand what seemed like an inexplicable phenomenon. People imagined that the volcano, that is now replaced by Lake Bolsena, had thrown stones during an eruption and that they had driven into the ground.

Morphology

The morphology of this basaltic wall is due to the intense volcanic activity that affected the area one million years ago and in particular to the magma that came in contact with water, which has taken the form of a pentagonal or hexagonal rock column. In some cases the so-called "heads" of the basalts are not smooth, but have a rough surface due to melt conformations called "volcanic".

See also

External links

Notes and References

  1. Web site: 2012-10-18 . Come si è formato Lago di Bolsena . 2023-06-15 . https://web.archive.org/web/20121018070652/http://www.lagodibolsena.org/il-lago/come-si-e-formato.html . 2012-10-18 .
  2. Web site: Descrizione Geosito 03: Pietre Lanciate. https://web.archive.org/web/20160304103453/http://geoparcotuscia.provincia.vt.it/pdf/schede/03_Descrizione_Pietre%20Lanciate.pdf. 2016-03-04.
  3. Il Patrimonio Geologico dell'area al contorno del Lago di Bolsena e dell'alto corso del Fiume Marta, i Geositi e lo Sviluppo Sostenibile. Una proposta metodologica transdisciplinare . Geological heritage of the area on surroundings of Bolsena Lake and of upper water-course of Marta River, Geosites and Sustainable Development. A multiscientific methodological proposal . Cianchi M.E. (*), Nappi G. (**), Pacchiarotti G. (*), Piscopo V. (*), Sibi P. (*), Valletta M. (*) (*)Dipartimento di Ecologia e Sviluppo Economico Sostenibile dell’Università della Tuscia. Via S. Giovanni Decollato, 1 - 01100 Viterbo (**) Istituto di Scienze della Terra dell’Università Carlo Bo. Campus Scientifico - Loc. Crocicchia - 61029 Urbino . Mem. Descr. Carta Geol. d'It. . LXXVII . 2008 . 213 - 252 figg. 5.
  4. Le Pietre lanciate . PAN. Parchi Ambiente Natura Nel Lazio . Anno 1. . 102 . April 2009.
  5. Web site: Nascetti . Giuseppe . February 2010 . Progetto Pilota Geoparco Della Tuscia Censimento E Selezione Dei Geositi Della Provincia Di Viterbo Relazione Generale . it. Tuscia University. Dipartimento di ecologia e sviluppo economico sostenibile (DECOS) . https://web.archive.org/web/20160304092514/http://geoparcotuscia.provincia.vt.it/pdf/doc/GeositiTuscia.pdf . 2016-03-04 .

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