Apoyeque volcan

pyroclastic shield 518 m / 1,699 ft
Nicaragua, 12.24°N / -86.34°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 29 févr. 2020

Apoyeque volcano forms the broad Chiltepe Peninsula in western Nicaragua and extends into south central Lake Managua
The Apoyeque volcano is part of a larger volcanic complex and consists of a low 500 m high shield cut by a 2.8 km wide and 400 deep lake-filled caldera and a 2.5 x 3 km wide explosion crater, the lake-filled Xiloá (Jiloá) maar, immediately SE of Apoyeque.
Present activity consists of active fumaroles in Laguna Xiloá and at the northern caldera rim.

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Style éruptif tipique: explosive
Eruptions du volcan Apoyeque: 50 BC ± 100 (Chiltepe Tephra, Apoyeque), 1050 BC ± 100 (Los Cedros Tephra), 2550 BC ± 1000 (Mateare Tephra, West Chiltepe Peninsula), 4160 BC ± 30 (Laguna Xiloá)

HeureMag. / ProfondeurDistance/Lieu
jeudi, 2. décembre 2021 19:12 GMT (1 séisme)
2 déc. 2021 13:12 (GMT -6) (2. déc. 2021 19:12 GMT)
2.7

89 km
36 km (22 mi)
39 km à l'ouest de Managua, Nicaragua
mercredi, 1. décembre 2021 08:13 GMT (1 séisme)
1 déc. 2021 02:13 (GMT -6) (1. déc. 2021 08:13 GMT)
2.4

7 km
11 km (6.8 mi)
7.1 km au nord de Managua, Nicaragua
dimanche, 28. novembre 2021 01:39 GMT (1 séisme)
27 nov. 2021 19:39 (GMT -6) (28. nov. 2021 01:39 GMT)
3.0

10 km
73 km (45 mi)
Departamento de Boaco, 30 km au nord-est de Granada, Nicaragua
jeudi, 25. novembre 2021 17:38 GMT (1 séisme)
25 nov. 2021 11:38 (GMT -6) (25. nov. 2021 17:38 GMT)
2.5

7 km
25 km (16 mi)
Departamento de Masaya, 9.6 km au sud-est de Managua, Nicaragua

Introduction

Apoyeque is part of the Chiltepe pyroclastic shield volcano, one of 3 large ignimbrite shields on the Nicaraguan volcanic front. The caldera formed after a VEI 6 plinian eruption which left a thick mantle of dacitic pumice that blankets the surrounding area (Chiltepe Tephra).
Other features of the volcano include:
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.
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Source: Smithsonian / GVP Apoyeque volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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