Mount Baldy, a sand dune in Indiana Dunes National Lakeshore, may appear to be no more than an innocent pile of sand grains speckled with vegetation, but the rolling slopes hide narrow, deep holes, which are evidence of entombed ...
Space Exploration
Nov 3, 2015
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30
Our understanding of when the very first animals started living on land is helped by identifying trace fossils—the tracks and trails left by ancient animals—in sedimentary rocks that were deposited on the continents.
Earth Sciences
Dec 13, 2018
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39
Primary fluid inclusions in bedded halite from the 830-million-year-old Browne Formation of central Australia contain organic solids and liquids, as documented with transmitted light and UV-vis petrography. These objects ...
Earth Sciences
May 11, 2022
2
284
In this new article for Geology, Gavin Kenny and colleagues reveal the likely origin of Earth's oldest crystals. New research into the origin of Earth's oldest crystals suggests that they probably formed in huge impact craters ...
Earth Sciences
May 5, 2016
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20
In its large caldera, Newberry volcano (Oregon, U.S.) has two small volcanic lakes, one fed by volcanic geothermal fluids (Paulina Lake) and one by gases (East Lake). These popular fishing grounds are small windows into a ...
Earth Sciences
Mar 5, 2021
2
32
Sea-level rise and big storms are hammering coastal communities, causing increased flooding and land loss, saltwater intrusion, wetland loss/change, and impacts to local infrastructure.
Earth Sciences
Oct 11, 2022
1
67
The repeated cycles of plate tectonics that have led to collision and assembly of large supercontinents and their breakup and formation of new ocean basins have produced continents that are collages of bits and pieces of ...
Earth Sciences
Apr 2, 2014
0
0
Two hundred and fifty million years ago, all the major continents were joined together, forming a continent called Pangea (which means "all land" in Greek). The plate thickness of continents can now be measured using seismology, ...
Earth Sciences
Jul 30, 2015
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18
As the U.S. makes new plans for disposing of spent nuclear fuel and other high-level radioactive waste deep underground, geologists are key to identifying safe burial sites and techniques. Scientists at The Geological Society ...
Earth Sciences
Oct 27, 2013
15
0
The largest delta plain in Earth's history formed along the northern coast of the supercontinent Pangea in the late Triassic. Its size out-scales modern counterparts by an order of magnitude, and approximates 1% of the total ...
Earth Sciences
Mar 25, 2019
0
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