E
E. J. Piispa
Researcher at Michigan Technological University
Publications - 22
Citations - 494
E. J. Piispa is an academic researcher from Michigan Technological University. The author has contributed to research in topics: Geology & Paleomagnetism. The author has an hindex of 8, co-authored 13 publications receiving 375 citations. Previous affiliations of E. J. Piispa include Universidad Yachay Tech & Victoria University of Wellington.
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Journal ArticleDOI
Palaeomagnetic field intensity variations suggest Mesoproterozoic inner-core nucleation.
Andrew J. Biggin,E. J. Piispa,Lauri J. Pesonen,Richard Holme,Greig A. Paterson,Toni Veikkolainen,Lisa Tauxe +6 more
TL;DR: Intense-based support is provided for the dominant dipolarity of the time-averaged Precambrian field, a crucial requirement for palaeomagnetic reconstructions of continents, and firm evidence is presented for the existence of very long-term variations in geomagnetic strength.
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Paleoproterozoic mafic dyke swarms from the Dharwar craton; paleomagnetic poles for India from 2.37 to 1.88Ga and rethinking the Columbia supercontinent
Mercedes E. Belica,E. J. Piispa,Joseph G. Meert,Lauri J. Pesonen,Jüri Plado,Manoj K. Pandit,George D. Kamenov,Matthew Celestino +7 more
TL;DR: In this article, the presence of a ∼85,000 km2 radiating dyke swarm with a fanning angle of 65° is confirmed within Peninsular India at 1.88°Ga.
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Latitude Dependence of Geomagnetic Paleosecular Variation and its Relation to the Frequency of Magnetic Reversals: Observations From the Cretaceous and Jurassic
Pavel V. Doubrovine,Toni Veikkolainen,Lauri J. Pesonen,E. J. Piispa,Siim Ots,Aleksey V. Smirnov,E. Kulakov,Andrew J. Biggin +7 more
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Analysis of an Updated Paleointensity Database (Q PI -PINT) for 65-200 Ma: Implications for the Long-Term History of Dipole Moment Through the Mesozoic
E. Kulakov,Courtney J. Sprain,Courtney J. Sprain,Pavel V. Doubrovine,Aleksey V. Smirnov,Greig A. Paterson,Greig A. Paterson,Louise Hawkins,Luke M. Fairchild,E. J. Piispa,Andrew J. Biggin +10 more
TL;DR: In this article, the global paleointensity database for 65-200 Ma was analyzed using a modified suite of QPI such that the likely reliability of measurements is assessed objectively and as consistently as possible across the diverse data set.
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Paleogeography of the Congo/São Francisco craton at 1.5 Ga : Expanding the core of Nuna supercontinent
Johanna Salminen,Johanna Salminen,David Evans,Ricardo I.F. Trindade,Elson P. Oliveira,E. J. Piispa,Aleksey V. Smirnov +6 more
TL;DR: In this paper, a new key pole for the Congo/Sao Francisco (C/SF) craton from recently dated mafic dykes in the Curaca (1506.7±6.9) region of Brazil is provided.