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Graphic showing the Transition Zone inside the Earth Princeton seismologist Jessica Irving worked with then-graduate student Wenbo Wu and another collaborator to determine the roughness at the top and bottom of the transition zone, a layer within the mantle, using scattered earthquake waves. They found that the top of the transition zone, a layer located 410 kilometers down, is mostly smooth, but the base of the transition zone, 660 km down, in some places is much rougher than the global surface average. “In other words, stronger topography than the Rocky Mountains or the Appalachians is present at the 660-km boundary,” said Wu. NOTE: This graphic is not to scale. Credit: Kyle McKernan, Office of Communications

Massive Bolivian earthquake reveals mountains 660 kilometers below our feet

Geology Page - February 16, 2019

The Hunga Island Tonga Hunga Ha'apai

Mountains create biodiversity

Panhandle of Texas

The origins of the High Plains landscape

This is a temple in the Nubra Valley of Ladakh, India,

Learning about the Himalayas using Mars technology

Mountain glaciers shrinking across the West

Mountains

Lost mountains in the Karoo reveal the secrets of massive extinction...

Geology Page - October 19, 2017

Study Confirms Large Earthquakes along Olympic Mountain Faults

Geology Page - September 29, 2017

Mountain glaciers recharge vital aquifers

Geology Page - July 22, 2017

Oman’s mountains may hold clues for reversing climate change

Geology Page - April 14, 2017

Determining when India collided with Asia to form the Himalayan mountains

Geology Page - April 5, 2017

Underwater mountains help ocean water rise from abyss

Geology Page - March 7, 2017

Scientists reconstruct formation of the southern Appalachians

Geology Page - November 22, 2016

Thawing ice makes the Alps grow

Geology Page - November 10, 2016

Nepal drains risky glacial lake near Everest

Geology Page - November 1, 2016

Entire Himalayan arc can produce large earthquakes

Geology Page - October 26, 2016

Researchers capture Central Asia’s ‘de-greening’ over millions of years

Geology Page - October 14, 2016

Surviving earth’s extremes: BYU research in the mountains of Antarctica

Geology Page - September 15, 2016

Westerly winds have blown across central Asia for at least 42...

Geology Page - September 14, 2016

Opposing mountain ranges

Geology Page - August 2, 2016

A Mountain of a Mystery “Formation history of the Hangay Dome...

Geology Page - August 2, 2016

Huge time-lag between erosion and mountain building

Geology Page - July 19, 2016

Massive landslide detected in Glacier Bay’s fragile mountains

Geology Page - July 5, 2016

Squeezing out mountains, mathematically, on Jupiter’s moon Io

Geology Page - May 22, 2016

Post-wildfire erosion can be major sculptor of forested western mountains

Geology Page - April 19, 2016

Geologists discover how Australia’s highest mountain was created

Geology Page - March 16, 2016

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