background preloader

Stumble Upon

Facebook Twitter

Fabulous Nature Pictures, Nature Photos and Nature Wallpapers. 36 Jaw-Dropping Nature Photos. Girls are like... Silk. Yokai_jiten_2_large.jpg (1000×712) Great Ideas. Novel technique reveals how glaciers sculpted their valleys. The beautiful and distinctive U-shaped glacial valleys typical of alpine areas from Alaska to New Zealand have fascinated and frustrated geologists for centuries.

Novel technique reveals how glaciers sculpted their valleys

While it seems obvious that glaciers scoured the bedrock for millions of years, what the landscape looked like before glaciers appeared, and how the glaciers changed that landscape over time, have remained a mystery. The glaciers erased all the evidence. Now, University of California, Berkeley, and Berkeley Geochronology Center (BGC) scientists have employed a clever technique to reconstruct the landform history of a 300-square-mile area of Fiordland in New Zealand, from the early Pleistocene some 2.5 million years ago, when the world cooled and glaciers formed, through today’s warmer interglacial period.

“The first question we asked was, how much of the current landscape and relief is a result of glacial erosion?” Said David Shuster, who developed the novel technique, called helium-4/helium-3 thermochronometry. Beautiful_landscape_1-1366x768.jpg (1366×768) Disney movies online. - StumbleUpon. 13 Simple Steps To Get You Through A Rough Day.

Animals :D