Researchers find vast chasm hidden beneath the ice of East Antarctica
Deep under the Antarctic ice sheet, there may be a chasm that’s as deep as the Grand Canyon, but many times longer, according to new geologic research led by scientists with Durham University.
The canyon system is made up of a chain of winding and linear features buried under several kilometres of ice in one of the last unexplored regions of the Earth’s land surface: Princess Elizabeth Land (PEL) in East Antarctica. Continue reading “The grandest of canyons?”→
Geothermal exploration leads to unexpected discovery
FRISCO — Scientists exploring deep underground for geothermal resources in Australia got more than they bargained for when they found signs of an ancient 400-kilometer-wide impact zone from a huge meteorite that broke in two moments before it slammed into the Earth.
Wind, water and ice are shown once again to be key geological drivers
FRISCO — Scientists have not only solved the mystery of the moving rocks at Death Valley’s Racetrack Playa — they documented the movement on video and even took measurements by attaching GPS units to some “non-native” rocks as part of a research project in the Southern California desert.
FRISCO — A rockslide has closed portions of Dinosaur National Monument, According to the National Park Service, the slide has resulted in the closure of NPS lands from the boundary of the monument and the U.S. Fish and Wildlife Service hatchery to Ely Creek.
The first rock slide was reported June 18, when a large slab of rock broke free from a cliff face just a short distance inside the monument boundary, less than .25 miles from the Jones Hole Fish Hatchery. One fisherman reported having to run from a boulder that landed in the stream not too far from his location. After receiving reports, park rangers checked the scene and did not see any further activity. Continue reading “Massive rockslide closes parts of Dinosaur Nat’l Monument”→
FRISCO —In what must have been incredible displays of fire and ice, ancient volcanoes once erupted under massive glacial ice sheets, leaving deposits that could help paleoclimatologists unravel some ice age puzzles.
In a recent study, University of British Columbia researchers surveyed those deposits at the Kima’ Kho tuya, which erupted under an ice sheet about 1.8 million years ago. Their findings suggest that he ancient regional ice sheet through which the volcano erupted was twice as thick as previously estimated. Continue reading “Volcano study helps measure historic ice sheet thickness”→
New research suggests melting ice sheets could trigger more vulcanism
By Summit Voice
SUMMIT COUNTY — Melting ice sheets may trigger an increase in global volcanic activity, according to researchers with the GEOMAR Helmholtz Centre for Ocean Research (based in Kiel, Germany), and Harvard, who matched historic geological records of vulcanism with warm climate periods.
“In times of global warming, glaciers on the continents are melting relatively quickly. At the same time the sea level rises. The weight on the continents decreases, while the weight on the oceanic tectonic plates increases. Thus, the stress changes within in the earth to open more routes for ascending magma,” said GEOMAR’s Dr Mario Jegen. Continue reading “Does climate affect volcanic activity?”→