New mapping method may lead to discovery of new geothermal energy, green metal resources

Yet, combining multiple data sets for this purpose remains a major challenge.

Despite those difficulties, Afonso managed to formally combine multiple satellite data sets with land-based data sets to see further into the earth than previously possible.

“It is a completely new way of ‘seeing’ what’s below there,” Afonso said.

The researcher pointed out that previously, the only reliable approach for deep resource exploration was the analysis of xenoliths, and rock samples brought to the surface by volcanoes.

“When you’re dependent on volcanoes, you can imagine that such samples are hard to come by. They are scattered in space and time and still have large uncertainties,” Afonso said.

The scientist and his team focused on central and southern Africa. The Kalahari, Tanzanian and Congo cratons—ancient and stable parts of the earth’s two topmost layers—in the area proved useful.

“Central and Southern Africa is a natural laboratory that helps us answer fundamental questions about the formation of cratons,” Afonso said. “And there are plenty of datasets on those needed xenoliths that helped us prove our method.”

According to Afonso and his co-authors, this approach adds to the development of the next-generation planetary models and supports the search for resources aimed at producing cleaner technologies. It also lays the groundwork for innovative resource exploration frameworks for earth but also other planets.

“Maybe Mars and/or the Moon can be next,” he said.

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