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Nicaragua · Fissure vent

Nejapa-Miraflores

Type
Fissure vent
Elevation
360m
Last eruption
1060
Laguna de Nejapa (right center) and Cerro Motastepe (left-center horizon) are part of the N-S-trending Nejapa-Miraflores alignment. A series of pit craters and fissure vents extends into Lake Managua (barely visible at the far upper right) and is continuous with the volcanic vents on the Chiltepe Peninsula (far right horizon). The Nejapa-Miraflores alignment (also known as Nejapa-Ticoma) has been the site of about 40 eruptions during the past 30,000 years, the most recent of which (from Cerro Motastepe) occurred less than 2500 years ago.
Laguna de Nejapa (right center) and Cerro Motastepe (left-center horizon) are part of the N-S-trending Nejapa-Miraflores alignment. A series of pit craters and fissure vents extends into Lake Managua (barely visible at the far upper right) and is continuous with the volcanic vents on the Chiltepe Peninsula (far right horizon). The Nejapa-Miraflores alignment (also known as Nejapa-Ticoma) has been the site of about 40 eruptions during the past 30,000 years, the most recent of which (from Cerro Motastepe) occurred less than 2500 years ago. · Photo: Photo by Jaime Incer.
Type
Fissure vent
Country
Nicaragua
Region
Middle America & Caribbean / Central America Volcanic Arc
Elevation
360m
Coordinates
12.120, -86.320
Last eruption
1060
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Cluster
Major rock type
Basalt / Picro-basalt

Geological summary

The Nejapa-Miraflores alignment (also known as Nejapa-Ticoma), ~10 km S of Apoyeque near the western margin of the Nicaraguan graben, cuts through the western part of the capital city of Managua and marks the right-lateral offset of the volcanic arc in Nicaragua.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

Eruption history

8 recordedGlossary

Record summary

Confirmed eruptions
8
Uncertain eruptions
0
Span of confirmed record
7430 BCE (±300 yrs) – 1060
Largest confirmed eruption
VEI 3 (1060)
Confirmed eruptions since 1900
0
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
7430 BCE~7147 BCE · 2 eruptions · max VEI ?5449 BCE~5166 BCE · 2 eruptions · max VEI ?4600 BCE~4317 BCE · 1 eruptions · max VEI ?3185 BCE~2902 BCE · 1 eruptions · max VEI ?638 BCE~355 BCE · 1 eruptions · max VEI ?777~1060 · 1 eruptions · max VEI 37430 BCE5449 BCE3185 BCE1204 BCE777

Detailed timeline

  1. 1060 (±100 yrs)VEI 3Geological estimate
    1060 – end unknown
    Nejapa maar
  2. 550 BCE (±500 yrs)VEI ?Geological estimate
    550 BCE – end unknown
  3. 3050 BCE (±500 yrs)VEI ?Geological estimate
    3050 BCE – end unknown
  4. 4390 BCE (±100 yrs)VEI ?Geological estimate
    4390 BCE – end unknown
    El Hormigón
  5. 5230 BCE (±200 yrs)VEI ?Geological estimate
    5230 BCE – end unknown
  6. 5350 BCE (±200 yrs)VEI ?Geological estimate
    5350 BCE – end unknown
  7. 7300 BCE (±3150 yrs)VEI ?Geological estimate
    7300 BCE – end unknown
  8. 7430 BCE (±300 yrs)VEI ?Geological estimate
    7430 BCE – end unknown
    Refinería crater

Nearby volcanoes

External links

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