Title

Magnetic Susceptibility of Loess Paleosol Sequences at Clyde: A Proxy for Paleoclimate?

Abstract

The Palouse loess is an extensive region of windblown silt that covers up to 50,000 square kilometers of southeastern Washington and parts of Oregon and Idaho. Around the world, the magnetic susceptibility of similar loess paleosol sequences has been successfully used to reconstruct past climate. However, this technique has not been tested in the Palouse area. We measured the magnetic susceptibility of the loess paleosol sequences at the Clyde outcrop and compared it to published records to determine if trends in magnetic susceptibility correspond to local trends in climate conditions. Using SEM and EDS, we analyzed samples from the outcrop to determine whether the magnetic phases were mineralized during soil formation. I share the results of this research in my presentation.

Faculty Sponsor

Nick Bader

Tracks

Geology and Climate

Terms of Use

ARMINDA Terms of Use

Location

Science 159

Presentation Type

Oral Presentation

Research Funding Source or OCS Program

Murdock Charitable Trust

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Magnetic Susceptibility of Loess Paleosol Sequences at Clyde: A Proxy for Paleoclimate?

Science 159

The Palouse loess is an extensive region of windblown silt that covers up to 50,000 square kilometers of southeastern Washington and parts of Oregon and Idaho. Around the world, the magnetic susceptibility of similar loess paleosol sequences has been successfully used to reconstruct past climate. However, this technique has not been tested in the Palouse area. We measured the magnetic susceptibility of the loess paleosol sequences at the Clyde outcrop and compared it to published records to determine if trends in magnetic susceptibility correspond to local trends in climate conditions. Using SEM and EDS, we analyzed samples from the outcrop to determine whether the magnetic phases were mineralized during soil formation. I share the results of this research in my presentation.

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