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.
geochronology
Posted inEditors' Vox
Insights on Climate Systems from Interglacials
Interglacials provide insights into the impacts of warmer than present conditions in certain regions of Earth.
Posted inOpinions
Geochronology: It's About Time
Chronology is at the heart of all geosciences, but its ubiquity has given it an image of a useful tool rather than a foundational discipline of its own.
Posted inResearch Spotlights
Dating Lava Domes in California's Salton Trough
Scientists use a trio of techniques to resolve the age and duration of rhyolite volcanism of the Salton Buttes.
Posted inNews
Mysterious Boulders Suggest Ancient 800-Foot-Tall Tsunami
The suspected sudden collapse of a nearby volcano's flank may have triggered an enormous wave that carried large boulders high onto Santiago Island in Cape Verde, a new study finds.
Posted inResearch Spotlights
Surface Folds Hint at Magnitude of Slip Along Thrust Faults
The shape of deformed sediments at the surface may allow researchers to estimate the cumulative slip along thrust faults such as the Chelungpu fault in Taiwan.
Posted inScience Updates
Exploring Radioisotopic Geochronology and Astrochronology
IsoAstro Geochronology Workshop: The Integration and Intercalibration of Radioisotopic and Astrochronologic Time Scales;
Madison, Wisconsin, 18–23 August 2014
Posted inResearch Spotlights
Archean Rocks in the Acasta Gneiss Complex
Studying Archean-age gneissic and schistic rocks in northwestern Canada, researchers determined that the source of these rocks formed 4.3 billion years ago.
Posted inNews
Tectonic Events May Have Triggered the Cambrian Explosion
A researcher proposes a tectonic mechanism that could have helped drive one of the biggest evolutionary events in history: the Cambrian Explosion.
Posted inResearch Spotlights
Mountain Ranges Hold New Clues to Pangaea’s Formation
A new tectonic history of the Allegeny-Variscan range.