Kathryn Potraz

Kathryn Potraz is tagged in 1 stories.
Plastic Permanence: Our Litter Is Now Part of the Geologic Record
Plastic Permanence: Our Litter Is Now Part of the Geologic Record

Chemistry, Materials & Packaging / From a human perspective, the earth’s geography changes pretty slowly — it takes thousands of years for a glacier to carve out a valley, for plate tectonics to form mountains and for volcanic eruptions to layer new land masses. But a recent discovery by scientists shows a new addition to the rock record, and it’s partly man-made.The new hybrid rock type is called a plastiglomerate, and the colorful stones are cropping up on shorelines in Hawaii. They’re multicolored and multitextured, a mosaic of stone and polymer. Plastiglomerates are formed when plastic is melted and hardens into pores of existing rocks. They’re usually between 2 and 8 inches, and rounded from erosion on the shore. - 6 years ago

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