All Articles Tagged As: sediments

Dry spells spelled trouble in ancient China (11/13/2008)

Weakening of summer monsoons to blame ...> Full Article

Research team proposes new link to tropical African climate (9/15/2008)

Scientists have discovered the Intertropical Convergence Zone may not be the key to southeast Africa's climate after all ...> Full Article

Scientist uncovers miscalculation in geological undersea record (9/12/2008)

New study compares 13C/12C records from carbonate platforms in 3 ocean basins ...> Full Article

Uncertainty Analysis Is Key to Predicting Severity of Floods, Sedimentation (9/9/2008)

Better understanding of flood uncertainty is key to helping mitigate damage ...> Full Article

Landslide buries climate change link (7/1/2008)

New findings could pour cold water on evidence that climate change is happening simultaneously around the world. ...> Full Article

Ebb and flow of the sea drives world's big extinction events (6/17/2008)

The oceans epic ebbs and flows of sea level and sediment over the course of geologic time, that is the primary cause of the world's periodic mass extinctions during the past 500 million years ...> Full Article

Fossils found in Tibet by geologist revise history of elevation, climate (6/14/2008)

Geologist surprised to find thick layers of ancient lake sediment filled with plant, fish and animal fossils typical of far lower elevations and warmer, wetter climates. ...> Full Article

Andes Mountains grew in rapid spurts, not slowly, researcher says (6/6/2008)

Mountain building may occur in faster fits and spurts than previously realized ...> Full Article

Earth's Sediments Record a Falling Sky (5/31/2008)

Research on sedimentary record of meteorite impacts on Earth ...> Full Article

Geologists Discover New Way of Estimating Size and Frequency of Meteorite Impacts (4/13/2008)

Meteorite linked to mass extinction 65 million years ago was four to six kilometers in diameter ...> Full Article

Two Oxygenation Events In Ancient Oceans Sparked Spread Of Complex Life (3/7/2008)

The rise of oxygen and the oxidation of deep oceans between 635 and 551 million years ago may have had an impact on the increase and spread of the earliest complex life, including animals, according to a new study. ...> Full Article

'Lost' Sediments Show Details of Polar Magnetic Field (3/1/2008)

Researchers studying cores of sediment collected 40 years ago have found evidence for magnetic field vortices in the Earth's core beneath the South Pole. The results contrast with earlier studies at lower latitudes, and could lead to a better understanding of processes in the core. ...> Full Article

Drained lake holds record of ancient Alaska (2/29/2008)

Not too long ago, a lake sprung a leak in the high country of the Wrangell-St. Elias Mountains. The lake drained away, as glacier-dammed lakes often do, but this lake was a bit different, and seems to be telling a story about a warmer Alaska. ...> Full Article

Studying Rivers for Clues to Carbon Cycle (2/28/2008)

In the science world, in the media, and recently, in our daily lives, the debate continues over how carbon in the atmosphere is affecting global climate change. Studying just how carbon cycles throughout the Earth is an enormous challenge, but one Northwestern University professor is doing his part by studying one important segment -- rivers. ...> Full Article

As waters clear, scientists seek to end a muddy debate (12/16/2007)

Geologists have long thought muds will only settle when waters are quiet, but new research shows muds will accumulate even when currents move swiftly. ...> Full Article

Arctic Impact Crater Lake Reveals Interglacial Cycles in Sediments (12/13/2007)

Researchers have taken cores from the sediments of a Canadian Arctic lake and found an interglacial record indicating two ice-free periods that could pre-date the Holocene Epoch. ...> Full Article