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Geomagnetic and mineral magnetic characterization of the Anthropocene
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Natural Resources and Sustainable Development.
2014 (English)In: Stratigraphical Basis for the Anthropocene / [ed] Waters, CN; Zalasiewicz, JA; Williams, M; Ellis, M; Snelling, AM, Geological Society of London, 2014, Vol. 395, 119-141 p.Chapter in book (Refereed)
Abstract [en]

Geomagnetic and mineral magnetic data provide geological indices that are both independent of human impact (i.e. geomagnetic) and respond to human-induced environmental impact (i.e. mineral magnetic). We provide the first discussion of such magnetic events for help in defining the Anthropocene. Within the Holocene, a potential geomagnetic marker for the Anthropocene is the low dipole latitude at c. 2700 cal a BP, which is associated with distinct palaeosecular variation features in northerly mid-to high-latitude sites. Mineral magnetic records from lake and marine sediments identify major deforestation and soil delivery events from catchment systems in many parts of the world during the last 4000 years. In Europe, clusters of these events occur around both 2600 cal a BP and AD 1100, the former coinciding with a low in geomagnetic field dipole latitude and peak intensity. Mineral magnetic records in peats and lake sediments can reflect particulate pollution from fossil fuel burning. The expansion of major coal burning began c. AD 1800 in western Europe and eastern North America, but around AD 1900 this expanded due to more widely distributed coal use, and this event is the most clear mineral magnetic marker for the base of the Anthropocene.

Place, publisher, year, edition, pages
Geological Society of London, 2014. Vol. 395, 119-141 p.
, Geological Society Special Publication, ISSN 0305-8719
National Category
URN: urn:nbn:se:uu:diva-232340DOI: 10.1144/SP395.13ISI: 000340169900008ISBN: 978-1-86239-628-9OAI: oai:DiVA.org:uu-232340DiVA: diva2:747401
Available from: 2014-09-16 Created: 2014-09-16 Last updated: 2014-09-16Bibliographically approved

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