Geology
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22 hours ago | News
Using
forensic-style chemical analysis, scientists in the U.K. and Germany
have directly linked seismic observations of the deadly 1980 Mount St.
Helens eruption to crystal growth within the magma chamber, the large
underground pool of liquid rock beneath the volcano. Building direct
links between observations at the surface and processes occurring
underground has been an ongoing problem for volcanologists.
May 23 | News
A Sandia National Laboratories modeling study contradicts a long-held belief of geologists that pore sizes and chemical compositions are uniform throughout a given strata, which are horizontal slices of sedimentary rock. By understanding the variety of pore sizes and spatial patterns in strata, geologists can help achieve more production from underground oil reservoirs and water aquifers.
May 18 | News
Naval Research Laboratory scientists have obtained a first-ever measured altitude profile of a dim extreme-ultraviolet terrestrial airglow emission that provides vital information needed to test and improve the accuracy of advanced techniques for remote sensing of the daytime ionosphere. They have obtained this altitude profile using scans from the Remote Atmospheric and Ionospheric Detection System (RAIDS) experiment.
May 17 | News
Scientists
in the U.K. have discovered a previously unrecognized volcanic process
called “fluidized spray granulation”, which can occur during kimberlite
eruptions to produce well-rounded particles containing mantle, most
notably diamonds. This physical process is remarkable similar to the gas
injection and spraying process used to form smooth coatings on
chocolates.
May 10 | News
For those who study earthquakes, one major challenge has been trying to understand all the physics of a fault—both during an earthquake and at times of "rest"—in order to know more about how a particular region may behave in the future. Now, researchers at the California Institute of Technology have developed the first computer model of an earthquake-producing fault segment that reproduces, in a single physical framework, the available observations of both the fault's seismic (fast) and aseismic (slow) behavior.
May 3 | News
Existing
historical climate records are typically biased to the high latitudes,
where polar ice and ocean sediments lock in the atmosphere’s past. Yet a
main driver of climate variability today is El Niño, which is a
completely tropical phenomenon. Scientists at the California Institute
of Technology believe they have found the ice core of the tropics,
however.
Apr 27 | News
For
more than a decade, scientists debated whether a maze of valleys near
the Martian equator was sculpted by ice or volcanic processes. Now,
aresearcher reports finding lava flows shaped like coils of rope near
the equator of Mars, the first time such geologic features have been
discovered outside of Earth.
Apr 26 | News
A
150-pound fossil recovered last year in northern Kentucky is more than 6
feet long and 3 feet wide. To the untrained eye, it looks like a bunch
of rocks or a concrete blob. Experts are trying to determine whether it
was an animal, mineral or a form of plant life from a time when the
Cincinnati region was underwater. So far, it has everyone at a loss.
Apr 25 | News
According
to new research in the U.K. that looked at data from thousands of
fracking operations in the United States, the chance of rogue fractures
due to shale gas fracking operations decreases significantly beyond a
certain distance from the injection source. This, the first analysis of
its kind, could be used as a starting point for separating aquifers and
fracking.
Apr 24 | News
A
group of high-tech tycoons wants to mine nearby asteroids wants to use
commercially built robotic ships to squeeze rocket fuel and valuable
minerals like platinum and gold out of the lifeless rocks that routinely
whiz by Earth. The inaugural step, to be achieved in the next 18 to 24
months, would be launching the first in a series of private telescopes
that would search for rich asteroid targets.
