low-magnitude seismic event
41United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
42Mount Garibaldi — as seen from Squamish Elevation 2,678 m (8,786 ft) …
432008 Chino Hills earthquake — 2008 Chino Hills earthquake …
44Wells Gray-Clearwater volcanic field — A view from Green Mountain with Pyramid Mountain in the distance Elevation …
452004 and later volcanic activity of Mount St. Helens — The 2004 and later volcanic activity of Mount St. Helens has been documented as a continuous eruption with a gradual extrusion of magma at the Mount St. Helens volcano in Washington, United States. Starting in October 2004 and ceasing in January… …
46Mauna Loa — For other uses, see Mauna Loa (disambiguation). Mauna Loa …
47Mount Cayley volcanic field — Coordinates: 50°07′13″N 123°17′26″W / 50.12028°N 123.29056°W / 50.12028; 123.29056 …
48Large igneous province — Only a few of the largest Large Igneous Provinces are indicated (by the dark purple areas) on this geological map, which depicts crustal geologic provinces as seen in seismic refraction data. A Large Igneous Province (LIP) is an extremely large… …
49Pokhran-II — Operation Shakti Image of Shaft III named Shakti Information Country  India Test site Indian Army …
50geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …
