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2 results

  • Chapter 9 - Stratigraphy: Finding Global Markers in a Small Canadian Lake

  • from Part Two - One Anthropocene; Many Stories
  • Edited by Julia Adeney Thomas, University of Notre Dame, Indiana
  • Book:
    Altered Earth
    Published online:
    24 March 2022
    Print publication:
    31 March 2022, pp 196-208

  • Summary

    After the 2019 Anthropocene Working Group vote to propose the Anthropocene as a geological epoch, the search began for a sequence of rock strata that could serve as the new epoch's marker. Canada's Crawford Lake has many characteristics that make it a potential candidate for this marker (known as the "geologic section," GSSP, or, more colloquially, the "golden spike.") This small, deep lake fills a karstic sinkhole on the Niagara Escarpment. The undisturbed sediment deep beneath its waters contains clear couplets called varves deposited seasonally (much like tree rings), recording annual environmental change. Core samples taken from the lake bottom tell the story of human disruption. Evidence of a nearby Iroquoian village, dating to the 13th – 15th century, illustrates human impact prior to the mid-20th century, but the magnitude of human impact in the mid-20th century is far greater, as the varves clearly show. We can read evidence of the Anthropocene in lake bottom deposits.

The Neotoma Paleoecology Database

The Neotoma Paleoecology Database
  • A Research Outreach Nexus
  • Simon James Goring, Russell Graham, Shane Loeffler, Amy Myrbo, James S. Oliver, Carol Ormond, John W. Williams
  • Published online:
    22 October 2018
    Print publication:
    29 November 2018
  • Paleoecological data from the Quaternary Period (2.6 million years ago to present) provides an opportunity for educational outreach for the earth and biological sciences. Paleoecology data repositories serve as technical hubs and focal points within their disciplinary communities and so are uniquely situated to help produce teaching modules and engagement resources. The Neotoma Paleoecology Database provides support to educators from primary schools to graduate students. In collaboration with pedagogical experts, the Neotoma Paleoecology Database team has developed teaching modules and model workflows. Early education is centered on discovery; higher-level educational tools focus on illustrating best practices for technical tasks. Collaborations among pedagogic experts, technical experts and data stewards, centered around data resources such as Neotoma, provide an important role within research communities, and an important service to society, supporting best practices, translating current research advances to interested audiences, and communicating the importance of individual research disciplines.