The solid Earth breathes as volcanoes "exhale" gases like carbon dioxide (CO2)—which are essential in regulating global climate—while carbon ultimately from CO2 returns into the deep Earth when oceanic tectonic plates ...
Earth Sciences
Mar 26, 2019
0
57
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
54
The Dead Sea is not completely dead. The most saline lake on Earth (more than 10 times saltier than sea water) is a harsh environment where only salt-loving microbes from the Archaea domain, known as extreme halophiles, are ...
Earth Sciences
Mar 25, 2019
0
12
Glaciers that drain ice sheets such as Antarctica or Greenland often flow into the ocean, ending in near-vertical cliffs. As the glacier flows into the sea, chunks of the ice break off in calving events. Although much calving ...
Earth Sciences
Mar 22, 2019
2
156
Emerald Bay, California, a beautiful location on the southwestern shore of Lake Tahoe, is surrounded by rugged landscape, including rocky cliffs and remnants of mountain glaciers. Scenic as it may be, the area is also a complex ...
Earth Sciences
Mar 19, 2019
0
11
Hurricane Maria hit the island of Puerto Rico on 20 September 2017 and triggered more than 40,000 landslides in at least three-fourths of Puerto Rico's 78 municipalities. In a new article from GSA Today, authors Erin Bessette-Kirton ...
Environment
Feb 7, 2019
0
12
One of the major issues when studying ore deposits formed in surficial or near-surface environments is the relationship between ore-forming processes and bacteria. At a first glance, these environments appear to be a preferred ...
Earth Sciences
Jan 25, 2019
1
585
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
0
39
The San Francisco Volcanic Field is a 4,700 square kilometers (1,800 square miles) area in the southern boundary of the Colorado Plateau. The field contains more than 600 scoria cones active in the past six million years. ...
Environment
Nov 20, 2018
0
8
In 1811 and 1812, the region around New Madrid, Missouri, experienced a number of major earthquakes. The final and largest earthquake in this sequence occurred on the Reelfoot fault, and temporarily changed the course of ...
Earth Sciences
Nov 6, 2018
0
208
