Research shows that an excess amount of some minerals contained in non-cotetic rocks may originate in the feeder conduits along which the magmas are travelling from the deep-seated staging chambers towards Earth's surface.
A team of scientists reports March 30 in the journal Proceedings of the National Academy of Sciences how carbon behaved during Earth's violent formative period. The findings can help scientists understand how much carbon likely exists in the planet's core and the ways it influences chemical and dynamic activities that shape the world, including the convective motion that powers the magnetic field that protects Earth from cosmic radiation.
Carbon is essential for life as we know it and plays a vital role in many of our planet's geologic processes -- not to mention the impact that carbon released by human activity has on the planet's atmosphere and oceans. Despite this, the total amount of carbon on Earth remains a mystery, because much of it remains inaccessible in the planet's depths.
A new study from a University of Michigan researcher and colleagues at three institutions demonstrates the potential for using existing networks of buried optical fibers as an inexpensive observatory for monitoring and studying earthquakes.
Hydrated protons at the surface of water ice are of fundamental importance in a variety of physicochemical phenomena on earth and in the universe. Hydrated protons can be introduced by the autoionization of water molecules; thus, the autoionization and subsequent proton transfer processes determine the proton activity inherent to water molecular systems. A recent experimental study on the H/D isotopic exchange of water molecules reports markedly enhanced proton activity at the surface of crystalline ice.
Rice University and Georgia Tech scientists use data from ancient coral to build a record of temperatures in the tropical Pacific Ocean over the last millennium. The data question previous links between volcanic eruptions and El Niño events.
New Zealand's largest fault is a jumble of mixed-up rocks of all shapes, sizes, compositions and origins. According to research from a global team of scientists, this motley mixture could help explain why the fault generates slow-motion earthquakes known as 'slow slip events' as well as destructive, tsunami-generating tremors.
An international team of scientists has for the first time identified the conditions deep below the Earth's surface that lead to the triggering of so-called 'slow motion' earthquakes.
In a new study in the AGU journal Geophysical Research Letters, scientists from the University of California, Irvine and NASA's Jet Propulsion Laboratory describe Greenland's loss of 600 billion tons of ice in the summer of 2019, raising global sea levels by 2.2 millimeters in a short time.
Researchers say they have identified the origins of an unusual fault that probably magnified the catastrophic 2011 Japan tsunami.