Tag Archives: American
North American ice sheet decay decreased local weather variability within the Southern Hemisphere
The altering topography of ice sheets within the Northern Hemisphere over the last Ice Age compelled modifications within the local weather of Antarctica, a beforehand undocumented inter-polar local weather change mechanism. Geology News — ScienceDaily
Reduced North American terrestrial primary productivity linked to anomalous Arctic warming
Nature Geoscience 10, 572 (2017). doi:10.1038/ngeo2986 Authors: Jin-Soo Kim, Jong-Seong Kug, Su-Jong Jeong, Deborah N. Huntzinger, Anna M. Michalak, Christopher R. Schwalm, Yaxing Wei & Kevin Schaefer Nature Geoscience – Issue – nature.com science feeds
Posted in Geology
Tagged American, anomalous, Arctic, linked, North, primary..., productivity, reduced
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Three new species of extinct South American marsupials discovered
The discovery of three extinct species and new insights to a fourth indicates a little-known family of marsupials, the Palaeothentidae, was diverse and existed over a wide range of South America as recent as 13 million years ago. Fossils of … Continue reading
Last remnant of North American ice sheet on track to vanish
The last piece of the ice sheet that once blanketed much of North America is doomed to disappear in the next several centuries, says a new study. Geology News — ScienceDaily
The controversial origin of a symbol of the American west
New research has identified North America’s oldest bison fossils and helped construct a bison genealogy establishing that a common maternal ancestor arrived between 130,000 and 195,000 years ago, during a previous ice age. Paleontology News — ScienceDaily
South American fossil tomatillos show nightshades evolved earlier than thought
Delicate fossil remains of tomatillos found in Patagonia, Argentina, show that this branch of the economically important family that also includes potatoes, peppers, tobacco, petunias and tomatoes existed 52 million years ago, long before the dates previously ascribed to these … Continue reading
Dense arrays of seismometers are letting scientists get a clearer look at a giant scar that underlies the American Midwest
Deep beneath the fertile flat farmland, there is a huge scar in the Earth called the Midcontinent Rift. This ancient and hidden feature bears silent witness to a time when the core of what would become North America nearly ripped … Continue reading
First North American monkey fossils are found in Panama Canal excavation
Seven fossil teeth exposed by the Panama Canal expansion project are first evidence of a monkey on the North American continent before the Isthmus of Panama connected it to South America 3.5 million years ago. Paleontology News — ScienceDaily
First North American monkey fossils are found in Panama Canal excavation
Seven fossil teeth exposed by the Panama Canal expansion project are the first evidence of a monkey on the North American continent before the Isthmus of Panama connected it to South America 3.5 million years ago. A team including Carlos … Continue reading
Growth rings on rocks give up North American climate secrets
Scientists have used soil deposits that form growth rings on rocks to provide a detailed picture of North American climate over a 120,000-year time span. Paleontology News — ScienceDaily