plate boundaries

What are the different types of plate tectonic boundaries?

K-T Boundary / K-Pg Boundary

K-T Boundary “Cretaceous-Tertiary Boundary”

Badlands near Drumheller, Alberta

K-Pg Boundary “Cretaceous–Paleogene Boundary”

Fossilized fish piled one atop another

66-million-year-old deathbed linked to dinosaur-killing meteor

In ancient oceans that resembled our own, oxygen loss triggered mass...

San Andreas Fault

Signs of 1906 earthquake revealed in mapping of offshore northern San...

Deep below the Earth in the Tonga-Fiji region of the South Pacific, one enormous earthquake triggered another.

Massive earthquakes provide new insight into deep Earth

Massachusetts State Geologist Stephen Mabee and colleagues recently annoucned that newly digitized surficial geology maps of the entire state are available online now. They provide details of what Mabee calls the 'kitty litter' mix of glacial tills, various sands and gravels on the earth's surface. Credit: USGS/MassGIS

State geologist, partners create new surface geology maps for Massachusetts

Graphite & Hexagonal Diamond

Cool Earth theory sheds more light on diamonds

Cross-sections of Earth’s mantle down to 1,400 km depth showing changes in its flow as ancient ocean beds fall into Earth’s deep interior.

Earth’s deep mantle flows dynamically

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