The article is an ethnographic travelogue of time spent in Oman in 2018 with the Ediacaran subcommission. This is a collective of Earth scientists who globe-trot in search of particular rocks that might be reliable markers for subdividing the long stretch of the Ediacaran period (which lasted ninety-four million years) into intervals that mark global transformations in Earth history. To do so, these scientists are reliant upon the amenability of Petroleum Development Oman, which Omanis credit with ushering Oman into “modernity.” (...) In recent years, critical theorists, cultural historians, and science-and-technology-studies (STS) scholars have argued for the necessity of forging new ways to tell stories that can scale between planetary history and the more familiar scales of human political action. In this article, I do not suggest that geological thinking is the right way to periodize sociopolitical or cultural history. Rather, I intend it as a provocation for us to recognize that periodization—and in particular the work required to nominate periods of duration and succession, unconformity and break—is a theory already built into the world, one which has disseminated across it to correlate time to place unevenly. As such, stratigraphy functions doubly in this article. First, stratigraphy is an object of inquiry: I address where geological timescales come from, and how stratigraphers calibrate eras, epochs, and periods dividing planetary history. Second, it is also an analytic with which I interrogate how thinking stratigraphically might inform how we, as critical theorists, historians, and the like, might think about those problems of periodization. (shrink)

The article argues that environmental planetary discourses have coalesced into the Anthropocene crisis narrative and reformulated the state of nature apparatus of Western political theory. The Anthropocene, as an ecological state of nature of late capitalism, casts light on the logics of geopower, which assembles species thinking, a fascination with nonlife and sovereignty, and the imaginary of extinction and mutation. Geopower shifts governmental technologies from human populations and their ‘milieu’ to nonhuman species, energy flows and ecosystems, from political economy and (...) biopower to Earth science and systems ecology. This configuration of power suggests a shift in the neoliberal agenda and imposes the Earth as a political personage, generating threatening political myths and figures of chaos and sovereignty, such as Gaia, Chthulu and Climate Leviathans. (shrink)

For at least two centuries most social thought has taken the earth to be the stable platform upon which dynamic social processes play out. Both climate change and the Anthropocene thesis – with their enfolding of dramatic geologic change into the space-time of social life – are now provoking social thinkers into closer engagement with earth science. After revisiting the decisive influence of the late 18th-century notion of geological formations on the idea of social formations, this introductory article turns to (...) more recent and more explicit attempts to open up the categories of social thought to a deeper understanding of earth processes. This includes attempts to consider how social and political agency is both constrained and made possible by the forces of the earth itself. It also involves efforts to think beyond existing dependencies of social worlds upon particular geological strata and to imagine alternative ‘geosocial’ futures. (shrink)