Posted By News On September 19, 2014 - 2:00pm
Posted By News On September 19, 2014 - 1:00pm
Two solids made of the same elements but with different geometric arrangements of the atoms, or crystal phases, can produce materials with different properties. Coal and diamond offer a spectacular example of this effect.
Posted By News On September 18, 2014 - 9:47pm
Boulder, Colo., USA – A new GSA Bulletin study uses tree rings to document arroyo evolution along the lower Rio Puerco and Chaco Wash in northern New Mexico, USA. By determining burial dates in tree rings from salt cedar and willow, investigators were able to precisely date arroyo sedimentary beds 30 cm thick or greater. They then combined this data with aerial imagery, LiDAR, longitudinal profiles, and repeat surveys to reconstruct the history of these arroyos.
Posted By News On September 18, 2014 - 8:43pm
Boulder, Colo., USA – Miranda, a small, icy moon of Uranus, is one of the most visually striking and enigmatic bodies in the solar system. Despite its relatively small size, Miranda appears to have experienced an episode of intense resurfacing that resulted in the formation of at least three remarkable and unique surface features -- polygonal-shaped regions called coronae.
Posted By News On September 18, 2014 - 7:44pm
The NASA-NOAA Suomi NPP satellite saw the western edge of Tropical Storm Fung-Wong over the central Philippines on Sept. 18. Fung-Wong developed on Sept. 17 as Tropical Depression 16W, and strengthened into a tropical storm by 5 p.m. EDT on Sept. 17.
Posted By News On September 18, 2014 - 6:54pm