Rota

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 12.55°N
  • 86.75°W

  • 832 m
    2729 ft

  • 344060
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Rota.

The Global Volcanism Program has no Weekly Reports available for Rota.

Index of Monthly Reports

Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

02/91 (SEAN 16:02) No sign of activity despite seismic swarms in the late 1970's


Contents of Monthly Reports

All information contained in these reports is preliminary and subject to change.

All times are local (= UTC - 6 hours)

02/91 (SEAN 16:02) No sign of activity despite seismic swarms in the late 1970's

"Seismic swarms, which occurred in the late 1970's, had indicated the possibility of an active magma chamber below the volcano. No sign of activity was detected during fieldwork. The most recent (but pre-historic) activity at Rota was a Plinian dacite eruption followed by andesite-dacite lava flows."

Information Contacts: B. van Wyk de Vries, O. Castellón, A. Murales, and V. Tenorio, INETER, Apartado 1761, Managua, Nicaragua.

The deeply eroded, forested Rota stratovolcano of Holocene age occupies the area between Cerro Negro volcano and the Telica volcanic complex in the central Marrabios Range. The 832-m-high volcano, also known as Orota, is truncated by a 1-km-wide circular crater whose rim is lowest on the southern side. The latest eruption from Rota produced thick andesitic lava flows from a NE-trending fissure NW of the summit. No historical eruptions are known from Volcán Rota, and Williams and McBirney (1965) considered the volcano to have been quiescent for many centuries. Seismic swarms occurred in 1986, 1989, and 1992. Two small NNW-SSE-trending lava domes, El Bosque (also known as Lomas San Ignacio del Bosque or Cerro Ojochal) are located on the plain 2 km north of the flank of Rota. They were constructed along the same trend as other eruptive fissures that extend transverse to the Marrabios Range volcanoes. An extensive lava field in this area was erupted from numerous small cones and maars.

The Global Volcanism Program is not aware of any Holocene eruptions from Rota. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Rota 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.



Synonyms
Orota


Domes
Feature Name Feature Type Elevation Latitude Longitude
Bosque, El
    San Ignacio del Bosque, Lomas
    Ojochal, Cerro
Dome 238 m 12° 36' 30" N 86° 45' 0" W
Cerro Negro volcano provides a vantage point for a NW-looking view down the Marrabios Range volcanic chain. The forested slopes in the foreground are part of Rota volcano. The light-colored conical peak in the center is Volcán Santa Clara, part of the Telica volcanic complex, whose principal peak, Telica itself, just pokes its head above the horizon behind and to the right of Santa Clara. The large conical peak on the center horizon is San Cristóbal, the highest peak of the Marrabios Range. The satellitic peak of El Chonco is on the left horizon.

Photo by Dennis Nielson, 1972 (courtesy of Mike Carr, Rutgers University).
The unvegetated cone of Cerro Negro, the youngest volcano in Nicaragua, is seen here from the slopes of Las Pilas volcano at the end of its 1995 eruption. Lava flows in 1995 traveled to the NNE (right). Beyond Cerro Negro to the NW is the broad massif of Rota volcano. Unlike Telica and San Cristóbal volcanoes in the distance at the far upper left, Rota has had no historical eruptions.

Photo by Britt Hill, 1995 (Southwest Research Institute).
The deeply eroded, forested Rota stratovolcano is seen here in an aerial view from the south. The vegetated, 832-m-high volcano, also known as Orota, is truncated by a 1-km-wide circular crater. No historical eruptions are known from Volcán Rota, although seismic swarms occurred in 1986, 1989, and 1992. Two small NNW-SSE-trending lava domes, El Bosque (also known as Lomas San Ignacio del Bosque or Cerro Ojochal) form the small forested cones visible on the plain at the left center, 2 km north of the flank of Rota.

Photo by Jaime Incer, 1991.
The low, forested Rota stratovolcano rises above fields to its west in the area between Cerro Negro volcano and the Telica volcanic complex. A 1-km-wide circular crater whose rim is lowest on the southern side lies at the summit. The latest eruption from Rota produced thick andesitic lava flows from a NE-trending fissure NW of the summit. No historical eruptions are known from Volcán Rota, although seismic swarms occurred in 1986, 1989, and 1992.

Photo by Lee Siebert, 1998 (Smithsonian Institution).
Forested Rota volcano rises above steaming ground of the San Jacinto thermal area at the eastern end of the Telica volcanic complex. Highway 26 between Telica and Malpaisillo crosses the low saddle between Rota and the Telica complex and provides easy access to the mud pots and steaming vents of the thermal area. Visitors to San Jacinto are accompanied by groups of vendors who live in settlements near the thermal area.

Photo by Lee Siebert, 1998 (Smithsonian Institution).
The deeply eroded Rota stratovolcano with its circular 1-km-wide summit crater lies at the bottom-center of this radar image. The latest eruption from the 832-m-high volcano produced thick andesitic lava flows NW of the summit, which extend nearly to the Malpaisillo road cutting diagonally across the image to the upper right. Two small NNW-SSE-trending lava domes (top-center), El Bosque, are located on the plain 2 km north of the flank of Rota (top-center). The Telica volcanic complex is visible at the upper left and lava flows from Las Pilas at the far right.

Radar image, 1971 (courtesy of Jaime Incer).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Incer J, 1987. . (pers. comm.).

McBirney A R, Williams H, 1965. Volcanic history of Nicaragua. Univ Calif Pub Geol Sci, 55: 1-65.

Navarro M, 1998. . (pers. comm.).

van Wyk de Vries B, 1993. Tectonics and magma evolution of Nicaraguan volcanic systems. Unpublished PhD thesis, Open Univ, Milton Keynes, 328 p.

Volcano Types

Stratovolcano
Lava dome(s)
Maar(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Major
Andesite / Basaltic Andesite
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
4,930
16,664
319,797
3,503,709

Affiliated Databases

Large Eruptions of Rota 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).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.