Ross N. Mitchell studies ancient continental configurations using paleomagnetism and the geological record of supercontinents. In a 2011 paper with David A. D. Evans, he combined dated magnetic-pole records with tectonic and stratigraphic correlations to reconstruct the core of Nuna. The reconstruction fitted the Siberian craton, Laurentia and Baltica together for an interval roughly 1.9–1.3 billion years ago and tested that fit against the histories of their margins.[ref]
Assembly and breakup of the core of Paleoproterozoic-Mesoproterozoic supercontinent Nuna by David A. D. Evans and Ross N. Mitchell. Abstract and Figure 1, pp. 443–444: quantitative reconstruction and independent geological correlations
This is a comparison between several kinds of evidence. Matching apparent polar wander paths constrains relative continental motion, while dated evidence of mountain building and continental-margin histories test whether the proposed neighbors experienced compatible events. Divergence between those records can indicate assembly or separation. The paper presents a particular reconstruction to be tested against further observations; its detailed fit is not implied merely by naming a supercontinent.
A researcher in paleomagnetism and supercontinent histories. Institutional profile: igg.cas.cn/sourcedb_igg_cas/cn/zjrck/yjy/201912/t20191219_5460988.htm
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