Montana Quakes Sunday + More

1.7 quake west of Yellowstone

and a  2.3 quake in north part of the state near Seeley Lake

Mary Greeley reports Monday:


Science news –
From Proceedings of the National Academy of Sciences of the United States of America
Mantle updrafts and mechanisms of oceanic volcanism

” …  The widely accepted mantle plume conjecture has been justified by experiments and calculations that violate the laws of thermodynamics for an isolated cooling planet. Hotspots such as Hawaii, Samoa, Iceland, and Yellowstone are due to a thermal bump in the shallow mantle, a consequence of the cooling of the Earth. They are not due to ∼100- to 200-km-wide tubes extending upward from fixed points near the Earth’s core. Seismic imaging shows that features associated with hotspots are thousands of kilometers across, and inferred ascent rates are low. Plate tectonic-induced updrafts and a cooling planet explain hotspots and the volcanoes at oceanic ridges…. “

NOTE: New Iceland volcano update is at the parent blog, The Louisiana Sinkhole Bugle.

Trivia:  The Idaho Island Park Caldera is an 8 on the VEI.  8 = “super-colossal” (!)

 Volcanic Explosivity Index


7 thoughts on “Montana Quakes Sunday + More

  1. I just can’t buy in to this being magma movement since I spotted the pattern that the noise seems to start up aroun 6-7am every day. It’s just too “neat”.

    On the other hand I can’t begin to imagine what man made process is going on that affects such a large area. Nearly all the seismometers this week are showing the pattern.

    I wish we knew!

    • maybe it has to do with soil / earth temp as the sun warms up.
      In farm country the weather report always says the soil temp at x inches deep (for planting reasons).

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