Deep Sea Plastic Pollution: Geological Perspective

Pollutants, including plastics, pass through linked sediment routing systems and from outside the relevant catchment areas, via coastal and terrestrial ocean currents (ie, coastal cells), aeolian transport, surface currents, and directly. To reach the deep sea fan. Input from marine resources such as transportation and fisheries.Credits: IA Kane and A. Fildani (changed from Hessler and Fildani) [2019].. )

May issue of the new focus article Geology It summarizes research on plastic waste in marine and sedimentary environments. Author IA Kane University Manchester and A. Phildani of the Deep Time Institute said, “Environmental pollution caused by uncontrolled human activity occurs on an unprecedented and vast scale worldwide. A variety of human pollution. Of these forms, the natural release of plastics, especially the sea, is one of the most recent visible effects. ”

The author cites multiple studies, including one in the May issue of Guangfa Zhong and Xiaotong Peng. Naka and Peng were surprised to find plastic waste in a deep-sea submarine canyon in the northwestern part of the South China Sea.

“Plastics are generally considered to be a major component of marine debris because of their durability and mass production,” writes Kane and Filmani. “Nanoplastics and microplastics are particularly insidious forms of human pollutants. Small fragments and fibers may not be visible to the naked eye, but they are ingested with the food and water we consume and are biological. It is absorbed by the meat. “

One of their key questions is, “If some plastics can survive over 1000 years in a terrestrial environment, how long will they last in dark, cold, high-pressure trenches several kilometers deep? Will microplastics break down into microplastics and nanoplastics in the deep ocean? “

“It is the duty of policy makers to take action now to protect the ocean from further harm, but we recognize the role that geoscientists can play,” writes Kane and Phildani. .. This includes the use of deep temporal perspectives to address social challenges, the understanding of current distributions in seafloor and sedimentary records, the use of earth science and technology to record the downstream effects of mitigation efforts, and the future of the seafloor. Includes predictions. plastic.

In summary, they write: “We understand the temporary nature of stratigraphic records, their amazing preservation, and the unique geochemical environment found in deep-sea sediments. From land to sea source to sink. Approach linkages can identify the sources and pathways that plastics take as they traverse their natural habitats, and the situations in which they are ultimately sequestered and the ecosystems they affect. This is achieved by working closely with scholars, biologists, chemists, and other people working on global pollution. Problems. ”

Underwater avalanches trap microplastics in the deep sea

For more information:
IA Kane et al. Anthropogenic Pollution in Deep Sea Sedimentary Systems — Geological Perspectives on Plasticity Problems, Geology (2021). DOI: 10.1130 / focus052021.1

Provided by Geological Society of America

Quote: Deep Sea Plastic Pollution: Geological Perspective (May 4, 2021) from https: // May 2021 Obtained on the 4th

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Deep Sea Plastic Pollution: Geological Perspective

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