San Venanzo volcano

Updated: Aug 12, 2022 07:41 GMT - Refresh
Maar 466 m / 1529 ft
Italy, 42.85°N / 12.28°E
Current status: (probably) extinct (0 out of 5)

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Typical eruption style: unspecified
San Venanzo volcano eruptions: None during the past 10,000 years
Less than 2.58 million years ago (Pleistocene)
Lastest nearby earthquakes:
TimeMag. / DepthDistance/Location
Friday, August 12, 2022 GMT (1 quake)
Aug 12, 2022 5:44 am (GMT +2) (Aug 12, 2022 03:44 GMT)

9.5 km
30 km (19 mi)
22 km southeast of Perudzha, Provincia di Perugia, Umbria, Italy
Sunday, August 7, 2022 GMT (1 quake)
Aug 7, 2022 8:49 pm (GMT +2) (Aug 7, 2022 18:49 GMT)

9.3 km
23 km (14 mi)
22 km northwest of Terni, Umbria, Italy
Friday, August 5, 2022 GMT (1 quake)
Aug 5, 2022 11:56 am (GMT +2) (Aug 5, 2022 09:56 GMT)

6.5 km
34 km (21 mi)
11 km southwest of Chiusi Scalo, Province of Siena, Tuscany, Italy
Friday, July 29, 2022 GMT (1 quake)
Jul 29, 2022 3:15 pm (GMT +2) (Jul 29, 2022 13:15 GMT)

7.7 km
32 km (20 mi)
13 km west of Terni, Umbria, Italy


The San Venanzo complex consists of the San Venanzo maar and the Pian di Celle tuff ring, both part of the Umbria-Latium ultra-alkaline district. The tuff ring is also associated with two spatter cones and a scoria cone. This complex of vents lies within the Tiber Valley Graben, where magmatism is believed to be a result of extension that began during the Pliocene (Stoppa, 1996). Early on, the eruption was explosive, producing pyroclastic flows and dry lapilli surges covering an area of about 0.15 km2; later eruptive behavior was dominated by lava flows. Block collapse and debris flows led to the formation of the steep inner crater walls. The tuffs of both San Venanzo and Pian di Celle are calcitic to carbonatitic in composition, and have been dated at about 265 +/- 3 ka (Stoppa, 1996; Stoppa and Sforna, 1995).
Smithsonian / GVP volcano information

See also: Sentinel hub | Landsat 8 | NASA FIRMS
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