New evidence suggests volcanoes caused biggest mass extinction ever

Mercury found in ancient rock around the world supports theory that eruptions caused ‘Great Dying’ 252 million years ago. From the University of Cincinnati: Researchers say mercury buried in ancient rock provides the strongest evidence yet that volcanoes caused the biggest mass extinction in the history of the Earth. The extinction 252 million years ago…

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Study finds billion-year superocean cycles in Earth’s history

Curtin researchers believe that ancient supercontinents formed and then fell apart through alternating cycles spanning hundreds of millions of years that involved superoceans being swallowed and the restructuring of the Earth’s mantle. The research, published in science journal Precambrian Research, found the supercontinents assembled and broke up through alternating processes of ‘introversion’ and ‘extroversion’. The latter process…

New Paper: PETM Was Caused by Climate Change… Ancient Climate Change Caused Climate Change… AEUHHH????

PETM = Paleocene-Eocene Thermal Maximum Guest Aeuhhh???? by David Middleton “Ancient climate change triggered warming that lasted thousands of years”… Climate change caused climate change??? Ancient climate change triggered warming that lasted thousands of years Matthew Carroll January 21, 2019 UNIVERSITY PARK, Pa. — A rapid rise in temperature on ancient Earth triggered a climate…

UMass Amherst geoscientists reconstruct ‘eye-opening’ 900-year Northeast climate record

Just a single study.  Just a single location.  Just a single technique.  Importance TBD~ctm From EurekAlert!    Link to study and excerpts below press release. Geoscientists at UMass Amherst have reconstructed the longest and highest-resolution climate record for the northeastern United States University of Massachusetts at Amherst Doctoral students Daniel Miller, in the water, with Helen…

Concord and discord among Northern Hemisphere paleotemperature reconstructions from tree rings

From Science Direct Scott St. George Jan Esper Department of Geography, Environment and Society, University of Minnesota, Minneapolis, USA Department of Geography, Johannes Gutenberg University, Mainz, Germany Received 3 September 2018, Revised 8 November 2018, Accepted 9 November 2018, Available online 15 November 2018. https://doi.org/10.1016/j.quascirev.2018.11.013 Get rights and content Highlights Tree rings are the backbone of…