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Geology & Geohazards
Faults, eruptions, tsunamis, and monitoring our dynamic planet.
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Magnitude 3.0 earthquake strikes in Contra Costa County early Monday
10+ hour, 20+ min ago (90+ words) A magnitude 3.0 earthquake shook the area near Brentwood, California on the morning of September 14, 2026 A magnitude 3.0 earthquake struck on Monday morning in Contra Costa County near Brentwood, according to the U.S. Geological Survey. The earthquake occurred at 6:47 a.m., with its epicenter about…...
Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Sep 15, 00:10 UTC
29+ min ago (0+ words) ...
90 micro-earthquakes rattle Southern California
9+ hour, 1+ min ago (124+ words) Dozens of earthquakes shook parts of Southern California over the weekend. The phenomenon is called a swarm. The Los Angeles Times said that the swarm of 90 small quakes rattled South Los Angeles on Friday and Saturday. They were all near…...
Kone Volcano, Ethiopia: Facts & Information | VolcanoDiscovery
7+ hour, 34+ min ago (99+ words) The following overview lists known alternative names and named features associated with Kone. The area within 30 km is densely populated, indicating high potential population exposure. The last confirmed eruption of Kone occurred around 1820. Since 1820, Kone volcano has had at least…...
Underground map of Los Angeles area predicts seismic shaking
1+ hour, 17+ min ago (195+ words) Image by Luke Bartini from Pixabay A new underground map of the Los Angeles region tracks the possible impacts of seismic activity, providing a tool to assess building safety. The structure and composition of the ground greatly influences the strength…...
Minor earthquake reported in southern Illinois Monday, USGS says
6+ hour, 18+ min ago (196+ words) A minor earthquake was recorded by the U.S. Geological Survey in southern Illinois Monday morning. According to data from the USGS, the 2.4-magnitude earthquake was recorded approximately three miles to the southwest of the town of Valier, which is located in…...
Scientists find microscopic evidence that magma repeatedly breaks and heals during eruptions
6+ hour, 20+ min ago (207+ words) Tiny features preserved inside volcanic particles reveal that magma fragmentation occurs across different depths, temperatures, and stages of an eruption image: A gas and ash plume from Etna over the city of Catania, Italy, July 2026 view more Scientists had already…...
Moderate but deep magnitude 5.2 earthquake 76 km northwest of Lae, Papua New Guinea
2+ hour, 52+ min ago (0+ words) ...
Lewotolo Volcanic Ash Advisory: ash plume to 6,000 ft (1,800 m) as of Sep 14, 22:40 UTC
1+ hour, 59+ min ago (0+ words) ...
2.4 magnitude earthquake registered near Hawthorne, CA on Sept. 12
7+ hour, 17+ min ago (95+ words) LOS ANGELES COUNTY, CA - A 2.4 magnitude quake struck close to Hawthorne at midnight on Saturday, the U.S. Geological Survey reported. The USGS reported a tremor in the region at 12:35 a.m. The epicenter was approximately 1 mile east-northeast of Hawthorne, at a depth of…...