THE BEDROCK CRITICAL ZONE NETWORK

Understanding the feedbacks connecting bedrock geology to CZ structure and function. "What happens at depth doesn't stay at depth."

HEADING INTO THE FIELD

Students and postdocs heading out at the South Carolina Piedmont site.

THE SEISMIC SOURCE

Ben pauses between hammer swings during seismic refraction work.

BUILDING THE "VIRTUAL CZ"

Wynnie Avent measures the acoustic velocity of saprolite.

RADAR IN THE PIEDMONT

Ivan Rabak uses ground-penetrating radar to elucidate CZ structure.

ELECTRICAL DATA

Leon Li lays out cable for electrical resistivity measurements.

DEPLOYING ELECTRODES

Undergrad Kaycee Lallatin deploys electrodes for a resistivity survey.

READY TO HAMMER

Undergraduate student Skye Bensel has her hammer at the ready.

WHERE WE'RE WORKING

Eight Bedrock Sites

Our eight sites cover a wide range of climatic and bedrock conditions, in nearly all possible combinations, and therefore span a wide range in predicted subsurface weathering patterns. For example, there are sites with differing bedrock composition but similar climate, topography, and bedrock fracture density, and there are humid and semi-arid sites with similar subsurface stress fields, leading to differing predictions about the depth and degree of weathering and how it varies across hillslopes. Thus our study design allows us to isolate and explore the effects of individual lithologic and climatic controls on CZ processes.

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