Ambre-Bobaomby

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 12.6°S
  • 49.15°E

  • 1475 m
    4838 ft

  • 233011
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Ambre-Bobaomby.

The Global Volcanism Program has no Weekly Reports available for Ambre-Bobaomby.

The Global Volcanism Program has no Bulletin Reports available for Ambre-Bobaomby.

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
233011

Unknown - Evidence Credible

1475 m / 4838 ft

12.6°S
49.15°E

Volcano Types

Volcanic field

Rock Types

Major
Basalt / Picro-Basalt
Rhyolite
Trachyte / Trachyandesite
Phonolite
Foidite

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
20,396
20,396
51,426
408,436

Geological Summary

The Ambre-Bobaomby volcanic field at the northern tip of Madagascar consists of Miocene volcanics capped by very recent cones. The earliest volcanism produced a large basaltic massif and minor pyroclastic flows. Tertiary to Quaternary volcanic rocks span a wide geochemical spectrum, including basaltic, andesitic, rhyolitic, trachytic, phonolitic, and foiditic compositions. The young volcanoes have very well-preserved morphologies and were mapped as Recent (Besairie, 1973). Other very recent cones are located at the southern end of the massif, and crater lakes are also present.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Besairie H J, 1973. Precis de geologie Malgache. Annales Geol Madagascar, 36: 1-141.

The Global Volcanism Program is not aware of any Holocene eruptions from Ambre-Bobaomby. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Ambre-Bobaomby page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Cones

Feature Name Feature Type Elevation Latitude Longitude
Bobaomby Cone

Photo Gallery


The cloud-covered area left of center is the Ambre volcanic massif. The broad Ambre-Bobaomby volcanic field extends from near the eastern coast (bottom) to include the Orontany Peninsula at the upper right. The north-pointing, arrow-shaped Cape Ambre peninsula forming the extreme northern tip of Madagascar lies at the lower right in this Space Shuttle view. The Ambre-Bobaomby volcanic field consists of Miocene volcanics capped by very recent cones and crater lakes.

NASA Space Shuttle image STS103-732-41, 1999 (http://eol.jsc.nasa.gov/).

Smithsonian Sample Collections Database


A listing of samples from the Smithsonian collections will be available soon.

Affiliated Sites

Large Eruptions of Ambre-Bobaomby Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.