Using Puerto Rico's Luquillo Mountains as a case study, scientists use the region's geological history to study how knickpoints—areas where there's a sharp change in the river's slope—move over time.
geology
Posted inResearch Spotlights
Despite Dryness, Quartz Grains Can Deform in Earth's Crust
A comparison of water content in undeformed and deformed quartz indicates that grains may change shape via weakening processes that cannot be duplicated in laboratory experiments.
Posted inOpinions
The Broken Bridge Between Geology and Museums
For lack of funding, irreplaceable collections of mineral specimens may be lost. The Earth science community must rethink the role of museums as archives and outlets for information.
Posted inEditors' Vox
Polarity Reversals in the Earth’s Magnetic Field
Studies of geomagnetic polarity reversals have generated some of the biggest and most interesting debates in the paleomagnetic and wider solid Earth geophysics communities over the last 25 years.
Posted inNews
Gypsum Forms in an Unexpected Way
Scientists spot the "stem cell" building blocks that lay the foundation for gypsum's formation.
Posted inNews
A Warm Day Can Trigger Rockfalls
Research on a cliff face in Yosemite National Park finds that when rockfalls happen without an obvious cause, ordinary warming in the Sun could be the culprit.
Posted inNews
Can Carbon Dioxide Trigger Geyser Eruptions?
Researchers looking at geyser discharge water in Yellowstone National Park found that dissolved carbon dioxide could be involved in a geyser's eruption.
Posted inNews
Asphalt Volcanoes Erupt in Slow Motion
Natural asphalt seeps on the ocean floor provide a stable home for diverse marine life that sequesters greenhouse gases.
Posted inNews
What Makes the Ground Suddenly Pop?
A geological feature in Michigan’s wooded Upper Peninsula has scientists scratching their heads.
Posted inEditors' Vox
AGU Workshops for Authors and Reviewers
AGU and AGU editors led a number of workshops in 2015 on how to be a successful author to worldwide audiences as well as to how to effectively review scientific papers. First, Yusuke Yokoyama (Editor for Geochemistry, Geophysics, Geosystems) convened a workshop at the JPGU meeting in Tokyo, Japan.