Ancient Age of Dinosaurs' Seafloor Found beneath Pacific Ocean
Briefly

The discovery of an ancient slab of seafloor beneath the Pacific that has lingered for over 120 million years sheds light on geological processes deep within Earth.
Researchers uncovered a cold, dense rock slab that may explain a gap in a giant mantle blob, offering a rare glimpse into Earth's deep dynamics.
This study is significant as it presents a present-day example of cold downwellings disrupting the deep mantle blobs, a phenomenon not well understood previously.
The ancient slab's positioning beneath the Pacific Ocean reveals critical interactions between Earth's lithosphere and mantle, crucial for understanding our planet's geological history.
Read at www.scientificamerican.com
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