There are two competing ideas of how platinum deposits formed: the first involves gravity-induced settling of crystals on the chamber floor, while the second idea implies that the crystals grow in situ, directly on the floor of the magmatic chamber. Researchers have established that the crystals grow in situ, with its high platinum status being attained while all its minerals were crystallising along the cooling margins of the magma chamber.
New research from the University of Alaska Fairbanks Geophysical Institute shows that Greenland may be ice-free by the year 3000. This research uses new data on the landscape under the ice to make breakthroughs in modeling the island's future. The findings show if greenhouse gas concentrations remain on their current path, the melting ice from Greenland alone could contribute as much as 24 feet to global sea level rise by the time it disappears.
Researchers at the University of Iowa and the United States Geological Survey report data gathered by orbiting satellites can yield more information about destructive earthquakes and can improve aid and humanitarian response efforts. The researchers looked at satellite data from several recent, large-magnitude earthquakes.
Why did a giant hole appear in the sea ice off Antarctica in 2016 and 2017, after decades of more typical sea ice cover? Years of Southern Ocean data have explained the phenomenon, helping oceanographers to better predict these features and study their role in global ocean cycles.
A new, more accessible and much cheaper approach to surveying the topology and strength of interstellar magnetic fields -- which weave through space in our galaxy and beyond, representing one of the most potent forces in nature -- has been developed by researchers at the University of Wisconsin-Madison.
The Canadian Rocky Mountains were formed when the North American continent was dragged westward during the closure of an ocean basin off the west coast and collided with a microcontinent over 100 million years ago, according to a new study by University of Alberta scientists.
Mountains have character. The continuous gentle, wavy hills and wide valleys of the Carpathians, Appalachians or lower parts of the Alps contrast strongly with the soaring peaks, ragged ridges and deep ravines of the high Tatra mountains and Pyrenees, which are, in turn, different from the inaccessible, snow-covered Himalayan or Andean giants, along whose slopes flow long tongues of glaciers instead of water. Beneath this great diversity, however, lies a surprisingly similar structure.
A system of categorization that reflects not just a mineral's chemistry and crystalline structure, but also the physical, chemical, or biological processes by which it formed, would be capable of recognizing that nanodiamonds from space are fundamentally different to diamonds formed in Earth's depths.
A new archaeological site discovered by an international and local team of scientists working in Ethiopia shows that the origins of stone tool production are older than 2.58 million years ago. Previously, the oldest evidence for systematic stone tool production and use was 2.58 to 2.55 million years ago.
Scientists with a NASA-led expedition are operating from the Inner Space Center at the University of Rhode Island's Graduate School of Oceanography as colleagues explore the deep Pacific Ocean to prepare to search for life in deep space.