Tag: "geologists" at biology news

Ocean Sediments Contain Record of Past Vegetation Fires in Africa

... National Science Foundation (NSF)-funded marine geologists David Verardo and William Ruddiman of the University of Virginia in Charlottesville have found in their research on ocean sediments the first detailed marine record of late Pleistocene era fires on land. Their paper, "Late Pleistocene charcoal in tr...

An Equal Opportunity Extinction? Cincinnati Geologists Find Global Impact from Permian Die

...areas with roughly the same effect. Traditionally, geologists believed that tropical areas andhigh-diversity marine environments such as reefs were hit hardestduring mass extinction events. Cooler areas of the globe andpolar regions appeared to be spared the most dramatic effects ofmass extinctions. However, wh...

Fossils Show British Columbia Was Once 2,000 Miles South

...are certain to be leveled at the newfindings. Some geologists have theorized that the sedimentary rocks in theregion of British Columbia have been affected by compaction as one layer isdeposited on top of the other, causing the magnetized crystals to flatten. Ward,however, notes that if that were the case, the ...

Geologist Finds Evidence Supporting Mysterious Ancient Sea

...en ancient continents. There are three basic tools geologists have to determine howthe ancient continents were s...thePrecordillera. Those similarities have led some geologists toargue that ancient North and South America were smashed togetherside by side. That would leave no ...

Study Of Microbes May Hone Predictions Of Mining Impact

...d by an interdisciplinary team involving chemists, geologists and biologists. Other co-authors of the study included Matthew Schrenk, Robert Goodman and Jillian Banfield, all of UW-Madison. Terry Devitt, (608) 262-8282, trdevitt@facstaff.wisc.edu...

New Dating Technique May Revise Geologic Time Scale

...urrounding igneous rocks, and for this reason some geologists have ignoredglauconies in constructing their time scales. "The ability to look in detail at a sample grain by grain is what provedto be crucial in discovering why glaucony dates come out too young," says NormanEvensen of the U of T's departme...

UD Environmental News: Pfiesteria Detectors To Be Described March 18

...tbreaks. At UD, marine andagricultural scientists, geologists and a host of other researchers have beenstudying water-quality issues for 25 years. The following UD experts can commenton various water-quality issues: NUTRIENT MANAGEMENT: "We are all part of the problem," notes J. Thomas Sims, aprofessor of pl...

ASU Scientists Join NASA Astrobiology Institute

...ces. A collaborative effort by Farmer and ASU geologists Tom Sharp and PaulKnauth will study the processes ... An interdisciplinary group including planetary geologists Philip Christensen,Ronald Greeley and exobiologist Farmer will continue the experiments beyondEarth,...

University Of Cincinnati Geologists Analyzes Evolutionary Impact Of Mass Extinctions

...ns recorded in Earth's geologicrecord haveled many geologists to view them as a distinct class of events -- so powerfulthat they swamp outnormal evolutionary processes. Others have argued the opposite, that overgeologic time, massextinctions have had little effect on global diversity trends. University of Cinc...

Computer Simulation To Predict Forest Fires

...an be precursors to avalanches, Cornell University geologists have shown in a computer simulation that forest fires display the same natural behavior. Their findings, they believe, could be used to predict where large forest fires can occur -- and how to prevent them. The researchers' findings appear in the...

Long Lava Flows May Have Taken Years, Causing Global Cooling And Extinctions

...sts, marine geologists, theoreticians, andeconomic geologists studying ancient ore-bearing lava flows. The duration of a lava flow affects the amount of sulfur dioxidereleased into the atmosphere and therefore the degree of global cooling itcauses. This cooling effect was noted following the relatively...

Fossil mayflies can be used to 'weigh' ancient atmospheres

...lmost no oxygen. Until now, however, the only way geologists could quantitatively gauge atmospheric pressure in the distant past was to measure the size of gas bubbles frozen into lava as it solidified. Without more exacting evidence, such as "barometer readings" the mayflies promise to provide, many questio...

Reefs and atolls of the Australian outback

...ts value lies in the wonderful outcrop which shows geologists an example of what is often buried," he said. "Usually we can only interpret such structures from seismic imaging or a few drill hole intersections."...

Ancient quakes leave mark from Kentucky to New York

Cincinnati -- A team of geologists from the University of Cincinnati will present evidence that powerful Ordovician earthquakes caused similar damage across a wide range of what is now the eastern United States. Professor Carlton Brett, graduate students Patrick McLaughlin and Sean Co...

Midwest geologists propose new view of ancient continental collisions

A team of geologists has accumulated extensive evidence that contradicts a previous view of how the continents which formed Gondwana collided and came apart to form what is now North and South America. University of Cincinnati geologist Warren Huff will explain the ev...

Lake Titicaca study sheds new light on global climate change

... older and more complete climate record, a team of geologists led by Science co-author Paul A. Baker of Duke University collected three new samples at 270 feet, 450 feet and 690 feet below the surface. Baker, Dunbar and their colleagues were able to reconstruct a history of precipitation in the Altiplano by d...

Humans at work and play in high altitude environments

... hosted the research of physiologists, ecologists, geologists and astronomers. Much of Powells research has been done on the mountain. His earlier work focused on respiration in birds and especially the mechanisms that allow birds to exercise harder than mammals at high altitude. His current research focuses o...

Geologists explore beach nourishment controversies, groundwater quality, and Blue Ridge mountain issues

...se questions and more will be explored by over 700 geologists at the 50th annual meeting of the Southeastern Section of the Geological Society of America (GSA). The meeting takes place April 5-6, 2001, at the Sheraton Capital Center, 421 South Salisbury Street, Raleigh, NC. TWO EVENTS ARE OPEN TO THE PUBLIC ...

Remote sensing study defines "edgy" cities

...ogical Research Project, Arizona State University geologists William Stefanov and Philip Christensen have turned to satellite data being gathered on 100 cities around the globe by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra spacecraft, a satellite in polar orbit....

July media highlights: GEOLOGY and GSA TODAY

...described in the paper. Given the huge effort that geologists put into interpreting sedimentary sequences, there will be great interest in this experimental approach and in this GSA Today science paper....

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(Date:10/22/2014)... Pass, OR (PRWEB) October 22, 2014 ... Southern California’s fresh water supply runs dangerously low, Southern ... change. Southern Oregon’s rivers, despite the lowest mountain snow ... even in late summer and early autumn.* That was ... authors of the new book “Hiking Southern Oregon,” during ...
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