The launch of a new GVP website is scheduled for Monday, May 20, 2013.
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Country: | Colombia | |
| Subregion Name: | Colombia | ||
| Volcano Number: | 1501-03= | ||
| Volcano Type: | Stratovolcano | ||
| Volcano Status: | Historical | ||
| Last Known Eruption: | 1943 | ||
| Summit Elevation: | 5200+ m | 17,060 feet | |
| Latitude: | 4.67°N | 4°40'0"N | |
| Longitude: | 75.33°W | 75°20'0"W | |
| The steep-sided, glacier-clad Nevado del Tolima volcano contrasts with the broad profile of Nevado del Ruiz volcano to the north. The andesitic-dacitic younger Tolima volcano formed during the past 40,000 years, rising above and largely obscuring a 3-km-wide late-Pleistocene caldera. The summit consists of a cluster of late-Pleistocene to Holocene lava domes that were associated with thick block-lava flows on the northern and eastern flanks and extensive pyroclastic-flow deposits. The summit contains a funnel-shaped crater 200-300 m deep. Holocene activity has included explosive eruptions ranging in size from moderate to plinian. The last major eruption took place about 3600 years ago. Lava dome growth has produced block-and-ash flows that traveled primarily to the NE and SE. Minor explosive eruptions have been recorded from Tolima in the 19th and 20th centuries. | |||
