Duke Geologists Explore Alternative Way To Measure Ice Age Sea Bottom Temperatures
...n bottom temperatures that are consistent with the geological record of glacial cycles as well as with known shifts in the Earth's orbit that are suspected to drive the glacial cycles. "What Gary is trying to understand is how deep ocean circulation drives climate change," said Duke geology professor Paul Baker...Core Spins Faster Than Earth, Scientists Find
...cientists found. Such motion is remarkably fastfor geological movements -- some 100,000 times faster than thedrift of continents, they noted. The scientists made their findingby measuring changes in the speed of earthquake-generated seismicwaves that pass through the inner core. Theresearch was conducted by X...Changing Continental Runoff Patterns Could Change Ocean Circulation
... early Eocene. "From various indicators in the geological record, we know that during the Eocene, the bottom water in the ocean was about 18 degrees Fahrenheit warmer than it is today," says Bice. "And with this warmer water globally, we believe that there were deep water formation sites in the subtropi...NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak
...ulating past climates and comparing its results to geological data, such as pollen deposited in lake sediments a...lated vegetation matched up fairly well with these geological reconstructions of plant life. Where differences exist, a colder simulation might help produce the c...North America Hit Hard By Asteroid Strike In Yucatan 65 Million Years Ago
...do in the future," said Peter Schultz, professorof geological sciences at Brown University. Schultz and Steven D'Hondt,professor of oceanography at the University of Rhode Island, are co-authors ofthe study in the November issue of the journal Geology . The researchers suggest that the relatively low angle of...Largest Tyrannosaur Fossil Unearthed In Montana
...eastern Montana, the site liesin the Hell Creek, a geological formation famous for preserving dinosaur bones. The bones date from the end of the Cretaceous period 66 million years ago. Inthe Late Cretaceous, the now bone-dry site sppears to have been a river channel,according to Rigby. When the dinosaurs died...Notre Dame Paleontologist Finds Damage Done To T. rex Skull
...astern Montana, the site lies in the Hell Creek, a geological formation famous for preserving dinosaur bones. The bones date from the end of the Cretaceous period 66 million years ago. In the Late Cretaceous, the now bond-dry site appears to have been a river channel. When the dinosaurs died, their bones washed...Widespread Genus Of Monkeys Gives Up Genealogical Secrets To Columbia Researchers
...at was going on in this part of the worldand which geological and climatological events were more important than othersin shaping the evolutionary history and dispersal paths of a diverse group oforganisms, such as primates," Professor Melnick said. Macaques invaded Asia in what appears to be a series ......nature of these disasters remained a mystery. The geological detective work conducted by the authors of the new paper revealsthat cause of death was actually a little-known and only recently recognizedphenomenon, a debris flow, or "sand slide," in which a massive quantity of wetsand rushes down the side of a d...UD Environmental News: Pfiesteria Detectors To Be Described March 18
... surface waters. He is an expert sourceon regional geological conditions as they pertain to water contamination. Hisrecent projects have included, for example, an assessment of the impacts ofagricultural drainage on water quality in Delaware. RNA-BASED PFIESTERIA PROBES : Assistant Prof. Craig Cary and coll...Gene Study Shows Mammals Lived Before Extinction Of The Dinosaurs
...logists willnow begin searching for vertebrates in geological strata where they have neverlooked before. "We are saying mammals definitely were living on Earth duringthe Cretaceous period from 70 to 100 million years ago. We don't yet know whatthey look like, but from the genes of their descendants we now kno...Study Of Sulfides In Bacteria Casts Doubts On Evidence Of Life In Martian Meteorite ALH84001
...s unstable and rapidly becomes mackinawite. In the geological environment thebacteria are found in, the reaction sequence would also eventually lead to greigite breaking down intopyrite and pyrrhotite, but that reaction does not occur when the bacteria are present. The team's research finding contradicts an ea...Tiny Jamaican Tree Crab Made Big And Fast Evolutionary Leap, Scientists Discover
... clock to an evolutionary event wellestablished by geological studies, the closing of the Panama land bridge betweenNorth and South America 3.1 million years ago that separated species of marinecrabs into two breeding groups--those living on the Caribbean side of Panama andthose living on the Pacific side. Usi...China And USGS--Working Together On Environmental Issues
... explained. The USGS, in cooperation with state geological surveys, has been collecting coalquality data for the U.S. for more than 20 years to create a comprehensivenational coal information database. This database has developed into the largestpublicly available database of its kind. Data are available on ...New Studies Shed Light On Facial Features Of Popular Dinosaurs
...ferenceinclude Michael Papp, a graduate student in geological sciences, and JaycSedlmayr, a graduate student in biological sciences, both at Ohio University. Cutline for artist's rendering: Drawing by Bill Parsons. Skull and newrestoration of the head of Leptoceratops, a small, primitive cousin toTriceratops. S...Possible Human Ancestors In Spain 780,000 Years Ago
...e boundary between the lower and middlePleistocene geological epochs. "Because the Gran Dolina fossils were found below the Matuyama/Brunhes boundarywith a clear signal of reversed polarity, we are confident the date isaccurate," Pares said. At the Geological Society of America meeting here today (Oct. 27), P......Washington, feel thatstrong evidence exists in the geological record to support a thermophilic theoryof origins. Dr. Gnter Wchtershuser from Germany writes what Wiegel calls "anelegant and stimulating chapter," arguing for a hyperthermophilic origin of lifein an iron-sulfur primordial world. He propose...Oldest Ice Core From The Tropics Recovered, New Ice Age Evidence
... Lonnie Thompson, professor of geological sciences and research scientist with the Byrd Polar Research Centerat Ohio State University, said that the new cores are the bestevidence yet that the tropics were much cooler durin...Some Smelter Slags Represent A Significant Environmental Hazard
...rofessor DennisK. Bird in Stanford's department of geological and environmental sciences andCharles N. Alpers of the U.S. Geological Survey. Parsons draws a distinction between two main kinds of slag. The type produced inmaking steel does not contain high levels of toxic elements, but slag producedby smelters t...Study Associates Asteroid Or Comet Impact With Extinctions In Argentina
...ipal investigatorPeter Schultz, professor of geological sciences at Brown University and animpact specialist. "We've found something linked to much more recent landhistory. The advantage to studying something this young is that you can reallyexamine the forensics. "This is a thres...