5/26/2015 — Dormant (ancient) volcanoes near LAS VEGAS NEVADA hit by multiple earthquakes

Over the past week a 5.4 magnitude earthquake (4.8M revised) struck a dormant volcanic butte near Las Vegas Nevada.

Today (May 26, 2015) , another noteworthy earthquake swarm has struck this unnamed Volcanic complex.

nevada earthquake dormant volcanic butte may 26 2015


Screenshots from nearby the earthquake epicenter reveal several long dormant volcanic buttes at this location.

The black basalt, and multi-colored black / red igneous rocks atop these small buttes indicate an eruptive past (most likely thousands of years ago).

nevada earthquake dormant buttes may 26 2015
Above: Dormant volcanic buttes reside near the Las Vegas Nevada earthquake epicenter location – Multiple noteworthy earthquakes over 1 weeks time (Last week of May 2015). Black basalt , red / grey / black igneous rock, and even small eroded lava flows exist near this location.


The location of the larger 5.4M earthquake appears to be two ancient undersea volcanoes less than a mile away.

These dormant volcanic buttes can still be seen with a crest, and layered flow across the landscape.  These two larger ancient volcanic buttes may have formed at a time when water was still present over much of Nevada.

dormant butte nevada earthquake may 26 2015
Above: Two ancient volcanic buttes reside at the epicenter of the 5.4 (4.8M revised) Las Vegas Nevada earthquake from May 22, 2015. Given away by a crested peak of the butte with layered lava flows revealed by erosion. Most likely an ancient undersea volcanic flow which is now showing signs of activity.


The younger smaller (darker black) buttes must have formed over the past few thousand years, as their coloring, and shapes have not eroded as much as the larger ancient undersea buttes where the 5.4M struck.

Two screenshots below show two nearby obvious lava flows from the tops of small volcanic buttes which surround the area now experiencing earthquakes in Nevada.

dormant butte nevada earthquake may 26 2015a

may 26 2015 earthquake may 26 2015

None of these ancient volcanoes have any volcanic designation from the USGS (from what I can find doing research), thus these “unnamed” ancient volcanoes should now be named “the dutch buttes” in honor of their discoverer.  (just joking).

In all seriousness, these dormant volcanoes are showing movement after several other dormant volcanoes saw activity along the West coast over the past week (including Mount Hood, Glacier Peak, Mammoth Mountain, Mono Lake, + Salton Sea).

Overall, these Nevada dormant volcanic earthquakes are a sign of greater pressure still building in the region of the Southwest United States.


Three different 3.0M+ earthquakes have struck in the past hour since originally posting this website post (currently 940pm CDT May 26, 2015)

M3.4 – 34km S of Caliente, Nevada


Magnitude 3.4 ml
Location 37.307°N 114.498°W
Depth 16.1 km
Origin Time
Number of Stations 28
Number of Phases 25
Minimum Distance 49.98 km (0.45°)
Travel Time Residual
Azimuthal Gap 207.47°
FE Region Nevada (41)
Magnitude/uncertainty 3.2 ml± 0.3
Location/uncertainty 37.360°N 114.596°W± 2.0 km
Depth/uncertainty 8.5 km± 1.5
Origin Time
Number of Stations 30
Number of Phases 34
Minimum Distance 40.63 km (0.36°)
Travel Time Residual 0.1995 sec
Azimuthal Gap 97.31°
FE Region Nevada (41)
Magnitude 3.1 ml
Location 37.315°N 114.653°W
Depth 20.8 km
Origin Time
Number of Stations 52
Number of Phases 26
Minimum Distance 34.95 km (0.31°)
Travel Time Residual
Azimuthal Gap 99.35°
FE Region Nevada (41)