German scientists from Ruhr University have managed to extract information about the climate of the Paleozoic era from ancient rocks. The study was published in the scientific journal magazine Geochimica and Cosmochimica Acta (GCA).
A team of geologists, in collaboration with international colleagues, analyzed limestones dating back 380 million years.
“Very old rocks are often exposed at depths of several kilometres. Changes in climate patterns are caused by hot fluids circulating at depth. Where they can penetrate the rock, they often lead to recrystallization or new growth of minerals,” explained Dr. Matthias Müller, one of the authors of the study.
According to the scientist, sedimentary rocks can maintain seawater temperature for hundreds of millions or even billions of years. Such rocks can be used as natural data archives, like ice cores or tree rings.
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Source: Gazeta
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