sediment cores Archives - State of the Planet

WOW-ing and RAW-ing in the South Pacific

Despite all the “Waiting on Weather” and “Running Away from Weather,” the expedition recovered exciting new sedimentary climate records in the remote and notoriously stormy Southern Ocean.

by |August 7, 2019
selfie on top of drill derrick

How a Drilling Ship Pulls Cores From 2.5 Miles Below the Sea

Recovering ancient seafloor sediments requires complicated machinery and a skilled crew.

by |July 19, 2019
long core carried down catwalk

Wiggle Wrangling on a Core-Drilling Ship

A scientist explains how she lines up wiggles on a screen to recover the missing layers in cores drilled from the bottom of the ocean.

by |July 16, 2019
sediment cores on table

After a Long Wait, Expedition 383 Drills its First Seafloor Core

It took six days to sail to Point Nemo, the most inaccessible point of the ocean on this planet, to drill a sample from the ocean floor.

by |July 11, 2019
Small glass vials containing seeds.

Tools of the Trade: A Peek Inside the Bog-Coring Lab of Dorothy Peteet

What’s a bog corer? And how do seeds help scientists learn about the earth’s past? A paleoecologist explains the most important items in her toolkit.

by |December 19, 2018

John Imbrie, a Pioneer of Paleoceanography

Imbrie, a former head of the Department of Geological Sciences, helped confirmed connections between changes in Earth’s orbit and the timing of the ice ages and was a co-founder of CLIMAP, an international effort to use sediment cores to map Earth’s climate at the height of the last ice age.

by |May 19, 2016

Walter Pitman and the Smoking Gun of Plate Tectonics

“We had this magic key, this magic magnetic profile,” Pitman said. “We were able to date it and eventually use it not only as a tool that proved continental drift but a tool by which we could actually reconstruct the pattern of drift, that is the relative position of the continents, and the actual timing of the separation of the continents.”

by |April 20, 2016