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Black Rock Desert

Volcanic field in United States

Last Eruption: 1290

Key Facts

Elevation

1,800 m (5,906 ft)

Type

Volcanic field

Location

38.970°, -112.500°

Region

Basin and Range Volcanic Province

Rock Type

Basalt / Picro-Basalt

Tectonic Setting

Rift zone

Location

Loading map...

Overview

The Black Rock Desert volcanic field consists of a group of closely spaced small Pleistocene-to-Holocene volcanic fields in the Black Rock and Sevier deserts of south-central Utah, at the eastern margin of the Great Basin. The Black Rock Desert field contains both Utah's youngest known rhyolite dome (400,000 years old) and its youngest eruptive vent, which produced the roughly 660-year-old Ice Springs lava flows. The broader volcanic field includes the smaller Deseret, Pavant, Kanosh, Tabernacle, Ice Spring, and northern Black Rock Desert fields.

The Pavant Butte and Tabernacle Hill tuff cones were erupted about 16,000 and 14,000 years ago through the waters of glacial Lake Bonneville. Lava flows from the Ice Springs crater complex traveled about 4 km west and north, overlapping late-Pleistocene flows from Pavant Butte.

Volcanic Hazards & Risk Assessment

Primary Hazards

    Risk Level

    Population at RiskModerate
    Infrastructure RiskModerate
    Aviation RiskSignificant

    Geological Composition & Structure

    Rock Types

    Primary
    Basalt / Picro-Basalt
    Silica Content
    Low (45-52% SiO₂)

    Tectonic Setting

    Rift zone
    Continental rift or intraplate setting with varied eruptive styles.

    Age & Formation

    Epoch
    Holocene
    Evidence
    Eruption Dated

    Eruption Statistics & Analysis

    MetricValueGlobal RankingSignificance
    Total Recorded EruptionsUnknownLowModerately active volcano
    Maximum VEIVEI UnknownMinorLocal impact potential
    Recent Activity736 years agoHistoricalHistorically active

    Monitoring & Alert Status

    Monitoring Networks

    Global Volcanism Program
    International eruption database

    Current Status

    Normal
    No recent activity. Routine monitoring continues.

    Nearby Volcanoes in North America Volcanic Regions

    Regional Volcanic Activity
    The North America Volcanic Regions contains multiple active volcanic systems. Cross-regional magma interactions and tectonic stresses can influence eruption patterns across the entire arc. Monitor regional seismic activity and volcanic alerts.

    Quick Info

    • Smithsonian ID: 327050
    • Evidence: Eruption Dated
    • Epoch: Holocene

    About the Photo

    The Black Rock Desert volcanic field consists of a cluster of closely spaced small volcanic fields of Pleistocene-to-Holocene age in the Black Rock and Sevier deserts. This view shows Utah's youngest known lava flow, the 660-year-old Ice Springs flow, which originated from a series of nested cinder and spatter cones. The rim of Crescent Crater is at the right, with the symmetrical Pocket Crater at the left and Pavant Butte in the distance. This tuff cone erupted through the waters of Pleistocene Lake Bonneville about 16,000 years ago.

    Photo by Lee Siebert, 1996 (Smithsonian Institution).

    Basic Information

    This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.