The launch of a new GVP website is scheduled for Monday, May 20, 2013.
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Country: | Nicaragua | |
| Subregion Name: | Nicaragua | ||
| Volcano Number: | 1404-091 | ||
| Volcano Type: | Pyroclastic shield | ||
| Volcano Status: | Radiocarbon | ||
| Last Known Eruption: | 50 BC ± 100 years | ||
| Summit Elevation: | 518 m | 1,699 feet | |
| Latitude: | 12.242°N | 12°14'30"N | |
| Longitude: | 86.342°W | 86°20'30"W | |
| The Apoyeque volcanic complex occupies the broad Chiltepe Peninsula, which extends into south-central Lake Managua. The peninsula is part of the Chiltepe pyroclastic shield volcano, one of three large ignimbrite shields on the Nicaraguan volcanic front. A 2.8-km wide, 400-m-deep, lake-filled caldera whose floor lies near sea level truncates the low Apoyeque volcano, which rises only about 500 m above the lake shore. The caldera was the source of a thick mantle of dacitic pumice that blankets the surrounding area. The 2.5 x 3 km wide lake-filled Xiloá (Jiloá) maar, is located immediately SE of Apoyeque. The Talpetatl lava dome was constructed between Laguna Xiloá and Lake Managua. Pumiceous pyroclastic flows from Laguna Xiloá were erupted about 6100 years ago and overlie deposits of comparable age from the Masaya plinian eruption. | |||
