News articles tagged with 'geologic' (Page 3)
Scientist decries floodplain development
— 3 Apr 2008 02:43 | EnvironmentMidwesterners have to be wondering: Will April be the cruelest month? Patterns in the Midwest this spring are eerily reminiscent of 1993 and 1994, back-to-back years of serious flooding,…
Moving crust of the Earth may occasionally stop
— 12 Jan 2008 18:46 | Geology and palaeontologyThe motion, formation, and recycling of Earth's crust - commonly known as plate tectonics - have long been thought to be continuous processes. But new research by geophysicists suggests…
Plate tectonics may take a break
— 4 Jan 2008 00:05 | Geology and palaeontologyPlate tectonics, the geologic process responsible for creating the Earth's continents, mountain ranges, and ocean basins, may be an on-again, off-again affair. Scientists have assumed…
Scientists lead major geological investigation in Papua New Guinea
— 12 Dec 2007 21:42 | Geology and palaeontologyThe National Science Foundation's Continental Dynamics Program has awarded a five-year, $3.595 million grant to Syracuse University, Columbia University, the University of California-Santa…
Magma P.I. unearths clues to how crust was sculpted
— 4 Dec 2007 02:25 | Geology and palaeontologyAbout a decade ago, Johns Hopkins University geologist Bruce Marsh challenged the century-old concept that the Earth's outer layer formed when crystal-free molten rock called magma…
Student research makes the pages of Nature
— 3 Dec 2007 18:49 | Geology and palaeontologyLeslie Hayden's research into deep Earth interactions has led to some important findings, particularly for someone so new to the field, and the scientific world is paying attention.…
Origin of breathable atmosphere on Earth found
— 28 Oct 2007 18:25 | Geology and palaeontologyOhio State University geologists and their colleagues have uncovered evidence of when Earth may have first supported an oxygen-rich atmosphere similar to the one we breathe today. The…
Uranium isotope ratios are not invariant, researchers show
— 23 Oct 2007 21:07 | ChemistryFor years, the ratio of uranium's two long-lived isotopes, U-235 and U-238, has been considered invariant, despite measurements made in the mid-1970s that hinted otherwise. Now, with…
What we can learn from the biggest extinction in the history of Earth
— 9 Aug 2007 20:23 | Geology and palaeontologyApproximately 250 million years ago, vast numbers of species disappeared from Earth. This mass-extinction event may hold clues to current global carbon cycle changes, according to Jonathan…
Prehistoric mystery organism confirmed as giant fungus
— 23 Apr 2007 07:15 | Geology and palaeontologyScientists at the University of Chicago and the National Museum of Natural History in Washington, DC, have produced new evidence to finally resolve the mysterious identity of what they…