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Nature Geoscience 10, 486 (2017). doi:10.1038/ngeo2960 Authors: Yuzhong Zhang, Haviland Forrister, Jiumeng Liu, Jack Dibb, Bruce Anderson, Joshua P. Schwarz, Anne E. Perring, Jose L. Jimenez, Pedro Campuzano-Jost, Yuhang Wang, Athanasios Nenes & Rodney J. Weber Nature Geoscience – Issue … Continue reading
While the ones that you collected evidently were all round, they actually do occur in several shapes, including discs, oblate forms, and spikes. There are several theories of exactly how they form. For an in depth discussion search moqui marbles … Continue reading
IMG class=hide alt=”WWF calls on Italy to save Marsican brown bear” src=”http://www.mineralfossil.com/wp-content/uploads/2014/03/wpid-85e9cdea6db610d01dfbef0d1b71bd83.jpg” (ANSA) – Rome, March 17 – The World Wildlife Fund (WWF) Italy on Monday called Environment Minister Gian Luca Galletti to act immediately to save Italy’s highly threatened … Continue reading