Chimborazo

Photo of this volcano
Country Ecuador
Volcanic Region Northern Andean Volcanic Arc
Landform | Volc Type Composite | Stratovolcano
Last Known Eruption 550 CE
Coordinates 1.469°S, 78.817°W
Elevation 6,261 m (20,541 ft)
Volcano Number 352071
Google Earth icon Google Earth Placemark with Features
Citation icon Cite Volcano Profile

Latest Weekly Volcanic Activity Report

The Global Volcanism Program has no Weekly Volcanic Activity Reports available for Chimborazo.

Latest Bulletin Report

The Global Volcanism Program has no Bulletin Reports available for Chimborazo.

Weekly Volcanic Activity Reports

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

Bulletin Reports

The Global Volcanism Program has no Bulletin Reports available for Chimborazo.

General Information

Eruptive History

There is data available for 6 confirmed eruptive periods.

0550 ± 150 years Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive)
0550 ± 150 years - Unknown Evidence from Correlation: Tephrochronology

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Ash

0270 ± 150 years Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive)
0270 ± 150 years - Unknown Evidence from Isotopic: 14C (calibrated)

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Ash

2500 BCE ± 1500 years Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive)
2500 BCE ± 1500 years - Unknown Evidence from Correlation: Tephrochronology

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Ash

4130 BCE ± 150 years Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive)
4130 BCE ± 150 years - Unknown Evidence from Isotopic: 14C (calibrated)

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Ash

5410 BCE ± 75 years Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive)
5410 BCE ± 75 years - Unknown Evidence from Isotopic: 14C (calibrated)

List of 4 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Ash
   - - - -    - - - - Lahar or Mudflow

7500 BCE ± 2500 years Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive)
7500 BCE ± 2500 years - Unknown Evidence from Correlation: Tephrochronology

List of 4 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Ash
   - - - -    - - - - Lahar or Mudflow

Synonyms and Subfeatures

The Global Volcanism Program has no synonyms or subfeatures listed for Chimborazo.

Photo Gallery

Thumbnail Photo (see caption)Clouds drape glacier-clad, 6310-m-high Chimborazo, Ecuador's highest volcano. Chimborazo anchors the southern end of the country's "Avenue of Volcanoes" 30 km NW of the city of Riobamba. The volcano is mostly of Pliocene-to-Pleistocene age, but recent work has shown that it remained active into the Holocene. The volcano is composed of three edifices along an east-west line, the youngest and westernmost of which forms the current summit of Chimborazo.

Photo by Lee Siebert, 1978 (Smithsonian Insitution).
Thumbnail Photo (see caption)Glacier-clad, 6310-m-high Chimborazo is Ecuador's highest volcano. It is seen here from the NE with Carihuairazo volcano forming the lower, mostly snow-free peak to the left. The youngest and westernmost of three edifices constructed along an E-W line forms the current summit of Chimborazo. Although activity was once thought to have ceased during the very latest Pleistocene, recent work indicates that Chimborazo erupted several times during the Holocene.

Photo by Patricio Ramon, 2004 (Instituto Geofisca, Escuela Politecnica Nacional).
Thumbnail Photo (see caption)An erosional unconformity cutting diagonally across the center of the photo due to a glacial advance about 20,000-18,000 years ago separates two sequences of late-Pleistocene tephra layers from Ecuador's Chimborazo volcano. A less prominent unconformity below the light-colored tephra layer at the top of the sequence marks a 16,000-14,000 year old glacial advance. This ~12-m-thick exposure lies on the SW flank.

Photo by Lee Siebert, 2006 (Smithsonian Institution).

Smithsonian Sample Collections Database

There are no samples for Chimborazo in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites