4 results for tag: geology


Study Captures Data to Turn Midwestern Farms into Carbon Sinks

(Left to right) Prof. Daniel Maxbauer, Jaren Yambing, and Ella Milliken Carleton College geologists join a growing wave of research into the carbon-trapping power of pulverized rock in America's agricultural fields No one could have predicted the severe heatwave that would swelter Ella Milliken and Jaren Yambing's first week of baseline field testing in June 2021—except maybe climate scientists. It was the longest heatwave to occur so early in a Minnesotan summer.  Under a blazing June sun, the Carleton College research assistants walked among rows of knee-high corn saplings in 90-degree weather. Flagging the corners of 12 half-acre plots, they ...

REMINERA: How A Stonemeal Startup Arose During A Time Of Pandemic

It was the beginning of the pandemic. My colleague, Nayara Mesquita, and I had recently defended our geosciences masters theses at the Federal University of Pernambuco (UFPE), and I was still figuring out my ‘next steps’ in life. Always the multitasker, Nayara was already doing an MBA on leadership and sustainability, along with social entrepreneurship and environmental activism. She warmly invited me to join her and start studying stonemeal, food security and carbon sequestration. We had heard about stonemeal just once or twice at university, and so it was still a relatively new field for us. It did not take much to fall in love with the ...

Blending Biochar with Rockdust: High-efficiency Mineral Delivery

Seedlings grown in soil treated with rock dust. 4 trays on left are commercial rock dust products; 3 on right are potential midwest region resources.   David Yarrow emphasizes that carbon is only one element in soil, and that the priority for our planet is soil regeneration through stewardship of diverse living communities and cultures. The very actions essential to put carbon, minerals, and microbes back in soils may restore authentic community to human society, wealth to community economies, health to human bodies, and true culture to our relations with the Earth as Gaia, a unified living intelligence.   Foundation fertility Rock ...

Spotlight on Agrogeologist Peter Van Straaten, PhD

At the II Brazilian “Rochagem” Conference, which took place in Poco de Caldas, Minas Gerais, in May 2013, Professor Peter van Straaten gave a series of talks on the use of rock dust to increase soil health for agriculture. As a pioneer in the practice of using rocks for soil remineralization, van Straaten shared his extensive knowledge with a broad spectrum of scientists and researchers who attended the conference. An expert in agrogeology, which Van Straaten defines as “geology in service of agriculture,” he has built an international network of projects that study remineralization and sustainable agriculture in Africa. His work has helped ...