Volcanic Unrest in Hawaii and Alaska: Geologists Monitor Critical Minerals and Global Geological Shifts

In the United States, geologists are closely watching Hawaii, where the US Geological Survey Hawaiian Volcano Observatory reports renewed inflation and gas driven tremor beneath the summit of Kilauea volcano on the Island of Hawaii. According to the observatorys December 5 daily update, lava remains visible in both the north and south vents within Halemaumau crater, with vigorous spattering and gushing gas flames indicating magma standing high in the conduit, and models suggest the next eruptive fountain episode, numbered thirty eight in the current sequence, is likely to begin between December six and eight. A December two monitoring overflight documented incandescent lava deep in the north vent and bright yellow native sulfur deposits forming around the vents as sulfur rich gases cool at the surface, underscoring the intense degassing that continues even between major outbursts, as shown in video released by the survey this week.

Farther north in Alaska, the US Geological Survey and Volcano Discovery report that Great Sitkin volcano in the Aleutian arc continues its low level eruption, with slow lava effusion building a thick lava dome in the summit crater and occasional small explosions sending ash a short distance from the vent, a reminder that the North Pacific remains one of the most volcanically active air routes on Earth. These parallel activities at Kilauea and Great Sitkin fit into a broader global pattern summarized in the most recent Smithsonian Institution Global Volcanism Program weekly report, which lists twenty nine volcanoes worldwide with confirmed eruptions in the week ending December two, including frequently active systems such as Etna in Italy, Merapi in Indonesia, and Popocatepetl in Mexico, demonstrating that roughly forty to fifty volcanoes are typically in intermittent eruption at any given time.

Beyond active volcanism, new research emerging this week in outlets such as Science Daily highlights how ancient geological records inform present day hazards. One study uses three point three billion year old zircon crystals to show that Earths early crust and mantle were far more dynamic than once thought, implying that modern style plate tectonics and the recycling of crustal material began very early in our planets history, which helps explain why todays continents host rich ore deposits, geothermal systems, and long lived fault zones. In the American Southwest, recent Geological Society of America communications on land subsidence in Arizonas Willcox Basin, driven by intensive groundwater withdrawal, are resonating with current concerns over how human activity is reshaping the geology of arid regions, effectively lowering land surfaces and subtly altering local seismic and flooding risk.

In New Mexico, New Mexico Tech announced on December three that it and the state Bureau of Geology have received a two point five million dollar United States Department of Energy grant to establish a research hub for critical minerals, reflecting a strategic shift in United States geoscience toward locating, characterizing, and responsibly extracting elements like lithium, rare earth elements, and copper that are essential for renewable energy technologies and national security. Mining News North reports that United States Geological Survey leadership is simultaneously championing domestic exploration for these critical minerals, pointing to a newly updated 2025 national critical minerals list that now includes sixty minerals and materials considered vital to the economy and defense, a move that ties subsurface mapping, structural geology, and geochemistry directly to energy transition policy.

Internationally, the Geological Society of London and partners hosted an early December conference on the global challenge of sand mining, emphasizing that sand, after water, is the planets most used resource and that unregulated extraction from rivers and coasts is reshaping landscapes, accelerating erosion, and altering sediment delivery to deltas. At the same time, upcoming meetings like the International Conference on Geology and Climate Change in Bukhara, Uzbekistan and the American Geophysical Unions annual gathering in New Orleans underscore how geologists are increasingly focused on how Earth processes, from volcanoes to groundwater depletion, interact with climate change, infrastructure, and resource demand, with research in the United States providing a significant share of the data and models guiding that global conversation.

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