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Lake-Bottom Bounty: Some Arctic sediments didn't erode during recent ice ages
10-06-2007 · Science News OnlineSediments in a few lakes in northeastern Canada were not scoured away during recent ice ages, a surprising find that could prove a boon to climate researchers.
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Keywords: lake-bottom, bounty, arctic, sediments, didn, erode, ice, ages, lake, bottom, sediment, age
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Similar news on "Lake-Bottom Bounty: Some Arctic sediments didn't erode during recent ice ages":
- Scraping the bottom
01-06-2007 · Science News Online
A survey of deep waters in western Lake Superior has revealed the tracks left by massive icebergs scraping bottom there during the last ice age.
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- Working with Inuit community is part of scientific expedition
05-16-2007 · EurekAlert!
When Elizabeth Thomas, a graduate student at the University at Buffalo, travels this month to Baffin Island in the northeast Canadian Arctic, she not only will be sampling sediments from the bottom of frozen lakes, she also will be educating a native Inuit class about global warming, taking local schoolchildren on a sediment-coring field trip and may participate in a call-in radio show with translators that will be broadcast in Inuktitut, the local language.
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- AGU journal highlights -- January 22, 2007
01-22-2007 · EurekAlert!
In this issue: Orbital variations and rate of change in global ice volume; Decomposing methane gas hydrates on the Arctic Shelf?; Continental deformation in Asia using GPS arrays; Rapid erosion of overridden soft sediments during glacial advance along Alaska's coast; Solar proton events may affect upper mesospheric cloud formation; Saturn's satellite Rhea: homogenous mix of rock and ice; Precipitation rates in vertically sheared tropical cyclones; Deformation in Andaman Islands associated with 2004 Sumatra-Andaman earthquake.
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- Reading the tale of an ancient river
10-70-2006 · Science News Online
Ocean-floor sediment near England holds material deposited during the last ice age by what was then Europe's largest river system.
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- Ice Ages and rivers may have affected gorilla diversification
12-10-2007 · EurekAlert!
Geography and historical climate change may have both played a major role in gorilla evolutionary diversification, according to a new genetic study by Cardiff University and the University of New Orleans.The collaborative School of Biosciences study shows that the genetic composition of gorilla populations varies across different parts of their current geographic range and that this variation may be tied to Ice Age climate change and river barriers.
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- DNA gives new perspectives to understand the mysteries of nature
02-13-2007 · EurekAlert!
Scientific breakthrough: What caused the extinction of the woolly rhinoceros ten thousand years ago from an area in Europe covering the coasts of the Arctic Ocean in the north to the coasts of the Mediterranean in the south? What caused the extinction of the mammoth while other ice age mammals like the musk ox just barely survived to present day. A new scientific methodological approach to detect genetic material will help researchers to solve the many mysteries of the past.
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- Arctic expeditions find giant mud waves, glacier tracks
12-12-2007 · EurekAlert!
Scientists gathering evidence of ancient ice sheets uncovered a new mystery about what's happening on the Arctic sea floor today. Sonar images revealed that, in some places, ocean currents have driven the mud along the Arctic Ocean bottom into piles, with some "mud waves" nearly 100 feet across.
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- O River Deltas, Where Art Thou? Coastal sinking stalls sediment accumulation
08-25-2007 · Science News Online
The western coast of Siberia lacks river deltas because of the way the terrain has subsided since the end of the last ice age.
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- October Geology and GSA Today media highlights
09-25-2007 · EurekAlert!
Topics include: discovery of exceptionally preserved soft-bodied biotas in Ontario and Manitoba, Canada; discovery of an arctic lake containing sediments 200,000 years old; effects of ancient Mayan deforestation and agriculture on soil erosion in northern Guatemala; a new catalog of episodic tremor and slip for the Cascadia subduction zone; and a new model of Sierra Nevada volcanism and uplift. The GSA TODAY science article takes a broad look at agriculture and soil erosion.
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- West African Ocean sediment core links monsoons to global climate evolution
05-31-2007 · EurekAlert!
Monsoons, the life-giving, torrential rains of Asia and Africa, have an ancient, unsuspected connection to previous Ice Age climate cycles, according to scientists at the University of California, Santa Barbara, and at Kiel University in Germany.
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