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Latest Geochronology Stories

2011-06-08 20:43:16

Application deadline is June 20, 2011; deployments to take place between July 12 and July 19, 2011 The National Science Foundation (NSF) is accepting written requests from professional journalists to report on research--including studies of the ice sheet, climate change and atmospheric chemistry--supported in Greenland by NSF's Office of Polar Programs (OPP). OPP and NSF's Office of Legislative and Public Affairs (OLPA) jointly manage and coordinate media visits to the Polar Regions. NSF...

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2011-05-31 06:00:00

The end of the Norse colonies on Greenland have long been shrouded in mystery, and while archaeologists have been able to fill in some blanks, there is limited written evidence of the colony's demise in the 14th and early 15th century. But now, new research from Brown University suggests that Greenland's early Viking settlers lived in a region with a rapidly changing climate with temperatures plunging several degrees on average in a span of decades. Climate scientists have been able to...

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2011-04-04 09:38:14

Trees are outstanding historians. In fact, scientists dating back to Leonardo da Vinci recognized the value of trees. While others had figured out that you could determine the age of a tree by counting its growth rings, da Vinci went beyond that basic knowledge. "He was a genius and realized also that the width of those growth rings carried information about the environmental conditions during each year the rings were formed," says David Stahle, director of the Tree Ring Laboratory at the...

2011-02-24 15:34:19

A group of researchers have studied the history of drought in the Pacific Northwest during the last 6,000 years, a time that spans the mid-Holocene geological epoch to the present. The goal of the research was to improve the understanding of drought history because the instrumental record of drought only goes back a few hundred years and at relatively few locations. Their work extended the drought history of the Pacific Northwest back much longer than the tree ring record, which provides...

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2011-02-02 21:37:51

Research project completes drilling for the year, reaching two miles below West Antarctic Ice SheetOn Friday, Jan. 28 in Antarctica, a research team investigating the last 100,000 years of Earth's climate history reached an important milestone completing the main ice core to a depth of 3,331 meters (10,928 feet) at West Antarctic Ice Sheet Divide (WAIS). The project will be completed over the next two years with some additional coring and borehole logging to obtain additional information and...

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2011-01-28 13:31:48

Scientists studying the world's most enigmatic lake have only 165 feet left to drill as time is running out. Vostok is a sub-glacial lake in Antarctica, hidden about 13,000 ft beneath the ice sheet. With the Antarctic summer almost over, temperatures will soon start to drop. Scientists will leave the remote base on February 6, when conditions are still mild enough for a plane to land. The team has not stopped drilling for weeks. "It's like working on an alien planet where no one has been...

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2011-01-17 06:10:00

A team of researchers conducting an extensive study of growth rings in trees say there could be a link between the rise and fall of ancient civilizations and sudden shifts in Europe's climate. They based their findings on data from more than 9,000 wooden artifacts that have come from civilizations from over the past 2,500 years, BBC News reports. In the study, published online in the journal Science, the researchers found that periods of warm, wet summers coincided with prosperity,...

2010-12-08 22:22:38

Raimund Muscheler is a researcher at the Department of Earth and Ecosystem Sciences at Lund University in Sweden. In the latest issue of the journal Science, he and his colleagues have described how the surface water temperature in the tropical parts of the eastern Pacific varied with the sun's activity between 7 000 and 11 000 years ago (early Holocene). Contrary to what one might intuitively believe, high solar activity had a cooling effect in this region. "It is perhaps a similar...

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2010-08-10 09:40:00

Glaciologists who drilled through an ice cap perched precariously on the edge of a 16,000-foot-high Indonesian mountain ridge say that the ice field could vanish within in the next few years, another victim of global climate change. The Ohio State University researchers, supported by a National Science Foundation grant and the Freeport-McMoRan mining company and collaborating with Meteorological, Climatological and Geophysical Agency (BMKG) Indonesia and Columbia University, drilled three ice...

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2010-08-05 08:28:38

International team of climate researchers drill through a mile and half of the Greenland ice sheet in search of climate change insights After years of concentrated effort, scientists from the North Greenland Eemian Ice Drilling (NEEM) project hit bedrock more than 8,300 feet below the surface of the Greenland ice sheet last week. The project has yielded ice core samples that may offer valuable insights into how the world can change during periods of abrupt warming. Led by Denmark and the...


Latest Geochronology Reference Libraries

Tenontosaurus
2013-01-29 09:53:30

Image Caption: Head of Tenontosaurus, Institut de paléontologie humaine, Paris, France. Credit: Rémih/Wikipedia (CC BY-SA 3.0) Tenontosaurus, meaning “sinew lizard”, is a genus of medium to large sized ornithopod dinosaur. The genus is known from the late Aptian to Albian ages of the middle Cretaceious period sediments of western North America, dating roughly between 115 to 108 million years ago. It was formerly thought to be a ‘hypsilophodont’, but since Hypsilophodontia is no...

Sharpirhynchia sharpi
2014-01-12 00:00:00

Sharpirhynchia sharpi is a species of extinct brachiopod named after fossil collector Samuel Sharp (1814-1882). This species lived during the Lower Bathonian of the Middle Jurassic Period. It is found only in the United Kingdom, and numerous specimens have been taken from several sites, the first from Limekiln Quarry in Northampton, England. S. sharpi is roughly a half-inch long, with a slender beak and 21 to 31 ribs fanning out from the hinge. This lampshell brachiopod lived life as a...

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2012-03-21 22:48:02

Sauroposeidon, meaning “earthquake god lizard,” is a genus of sauropods dinosaur from the Aptian and Albian ages of the Early Cretaceous Period (110 million years ago). It was discovered in the southeast region of Atoka County, Oklahoma, not far from the border of Texas, in a claystone outcrop. The fossils were initially misidentified as pieces of petrified wood when they were found in 1994. A more detailed analysis in 1999 revealed they were truly dinosaurian bones. They were formally...

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2011-01-03 18:03:01

Qiaowanlong is a genus of sauropod dinosaur from the Albian stage of the Early Cretaceous Period (100 million years ago). It was discovered in the Yujinzi Basin of Gansu, China in 2007. It came from the geological formation called the Xinminpu Group. Qiaowanlong is known from articulated cervical (neck) vertebrae and a right pelvic girdle, as well as several unidentified bone fragments. It was the first brachiosaurid to have been found from China. Qiaowanlong is estimated to have been...

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2011-01-03 17:56:44

Qantassaurus is a genus of ornithopod dinosaur from the late Aptian to early Albian age of the Early Cretaceous Period (115 million years ago). It lived in Australia when the continent was still south of the Antarctic Circle, and was still part of the supercontinent Gondwana. Qantassaurus was discovered in 1996 during the third annual field season of the Dinosaur Dreaming Project, a dig jointly run by Monash University and Museum Victoria. It was found in the intertidal site known as Flat...

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