Hollister Ridge
Fissure vent · -1,000m · Undersea Features
About Hollister Ridge
Hollister Ridge is a fissure vent rising to -1,000 meters (-3,281 feet) in Undersea Features's Southern Pacific Volcanic Regions. No historical eruptions have been recorded, though the volcano is classified based on geological evidence of past activity. The volcano has produced 1 recorded eruption.
Geography & Climate
Hollister Ridge is located in Undersea Features, within the Pacific-Antarctic Ridge Volcanic Province of the broader Southern Pacific Volcanic Regions. Situated at 54.00° S, 139.84° W in the Southern Hemisphere, the volcano lies within a temperate climate zone. With an elevation of -1,000 meters — below sea level — Hollister Ridge is a submarine or submerged volcanic feature. Submarine volcanoes make up the majority of Earth's volcanic activity, though most eruptions go unobserved beneath the ocean surface. The volcanic landform is characterized as a cluster, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
Geological Context
Hollister Ridge is an intraplate volcano, meaning it formed away from any plate boundary. These volcanoes are often powered by hotspots — plumes of abnormally hot mantle material rising from deep within the Earth. Hotspot volcanoes like Hollister Ridge tend to produce effusive eruptions with lava flows that can be relatively predictable, giving nearby communities in Undersea Features more time to prepare. However, they can also produce explosive phases, particularly when magma interacts with groundwater. The dominant rock type is no data (checked), which influences the viscosity of the magma and, consequently, the style of eruptions this volcano produces. Rock chemistry is one of the most important factors in determining whether a volcano erupts explosively or effusively.
Eruption History Summary
Hollister Ridge has 1 recorded eruption in the geological database, spanning from 1991 CE to 1991 CE. The most recent eruption in 1991 CE places this volcano within the modern era of volcanological observation.
GVP Reference Summary
Acoustic T-waves from a seismic swarm, possibly associated with magmatic activity, were recorded in 1991 from a location 130 km S of the Eltanin Fracture Zone (Bulletin of the Global Volcanism Network, 1991). The source was near a seamount shallower than 1,000 m in depth near the Pacific-Antarctic Ridge.
— Smithsonian Institution, Global Volcanism Program
1 Recorded Eruption
| Year | VEI | Type | Area |
|---|---|---|---|
| 1991 | 0 | Uncertain Eruption | Seamount by Pacific-Antarctic Ridge? |
Real-Time Data
USGS Alert Level
Thermal Anomalies
Frequently Asked Questions About Hollister Ridge
Is Hollister Ridge an active volcano?+
Hollister Ridge is not currently classified as active. Its activity evidence is listed as "Evidence Uncertain." No recorded eruptions have been documented. However, no volcano is ever considered permanently extinct.
When did Hollister Ridge last erupt?+
The most recent recorded eruption of Hollister Ridge occurred in 1991 CE with a Volcanic Explosivity Index (VEI) of 0. The eruption was classified as a "Uncertain Eruption." Hollister Ridge has 1 recorded eruption in total.
How high is Hollister Ridge?+
Hollister Ridge has a summit elevation of -1,000 meters (-3,281 feet) above sea level. With an elevation of -1,000 meters (below sea level), this is a submarine or submerged volcanic feature.
What type of volcano is Hollister Ridge?+
Hollister Ridge is classified as a Fissure vent. Fissure vent volcanoes have distinct geological characteristics that set them apart from other volcanic types.
Where is Hollister Ridge located?+
Hollister Ridge is located in Undersea Features, in the Southern Pacific Volcanic Regions. More specifically, it lies within the Pacific-Antarctic Ridge Volcanic Province. Its exact coordinates are -53.998° latitude, -139.845° longitude.
Is it safe to visit Hollister Ridge?+
Hollister Ridge can generally be visited, but as with any volcano, visitors should check local conditions and any advisory notices before traveling. Undersea Features may have specific regulations for accessing volcanic areas. Guided tours are often the safest and most informative way to experience a volcano.