Organic carbon sampled in the lake contained radiocarbon, indicating connection to the ocean in the mid-Holocene, when the grounding line was up to 260 kilometers inland of its current position.
Holocene
Posted inEditors' Highlights
Time-Step Filtering in Holocene Global Magnetic Field Models
Through a local fixed time-step filter, global Holocene magnetic field models remain mathematically tractable refining our insight into field variability and improving archeological dating.
Posted inNews
Mammoths Lost Their Steppe Habitat to Climate Change
Ancient plant and animal DNA buried in Arctic sediments preserve a 50,000-year history of Arctic ecosystems, suggesting that climate change contributed to mammoth extinction.
Posted inNews
The Difficulty of Defining the Anthropocene
Humans may be in a new geologic epoch—the Anthropocene—but different groups define its start at varied times. When should the Anthropocene have begun?
Posted inNews
Eruption in El Salvador Was One of the Holocene’s Largest
Roughly 1,500 years ago, the Tierra Blanca Joven eruption blanketed Central America in ash and likely displaced Maya settlements, new research shows.
Posted inResearch Spotlights
Sediment Cores Reveal Ocean Current’s Past Life
East Asia’s Black Current may have rerouted in the past 10,000 years or so.
Posted inResearch Spotlights
Corals Reveal Ancient Ocean Temperatures in Great Barrier Reef
Old coral colonies suggest that a prehistoric warming event called the mid-Holocene Thermal Maximum may have occurred earlier than previously thought.
Posted inEditors' Vox
Here Comes the Anthropocene
Two recent papers in Earth's Future discuss the addition of a new epoch to the geological timescale.
Posted inResearch Spotlights
Early Agriculture Has Kept Earth Warm for Millennia
Ice core data, archeological evidence, and other studies suggest humans had a significant influence on Earth's preindustrial climate.
Posted inOpinions
What Is the Anthropocene?
Geologists must consider whether the Anthropocene is a specific segment in the continuum of time or a holistic concept.