In this two-part lecture, geologist Patricia Corcoran and artist Kelly Jazvac will discuss their fieldwork, research, and artistic outputs of plastiglomerate, a new stone identified by their research team. Plastiglomerate contains mixtures of sedimentary grains, and other natural debris that is held together by hardened molten plastic. It has been considered a potential marker of the Anthropocene. Corcoran will begin with an overview of her co-authored paper, “An anthropogenic marker horizon in the future rock record,” published in GSA Today. Jazvac will follow with a discussion of how the findings from that paper serve as artworks. Both talks will address the ways in which this interdisciplinary, collaborative project first developed, as well as the ways it continues to take shape in relation to the crisis of plastic pollution in oceans, lakes, and waterways.