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Showing results for tags 'mesoproterozoic'.
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Geologists Unravel the Mysteries of Australia’s Rare Pink Diamonds
Oxytropidoceras posted a topic in Rocks & Minerals
Earth's biggest cache of pink diamonds formed in the breakup of the 1st supercontinent 'Nuna' by Stephanie Pappas, LIveScience, September 19, 2023 Geologists Unravel the Mysteries of Australia’s Rare Pink Diamonds The dazzling, blush-colored gems likely emerged from Earth’s mantle some 1.3 billion years ago, when a supercontinent named Nuna broke up, study suggests by Sarah Kuta, Smithsonian, September 20, 2023 The open access paper is: Olierook, H.K.H., Fougerouse, D., Doucet, L.S. et al. Emplacement of the Argyle diamond deposit into an ancient rift zone triggered by supercontinent breakup. Nat Commun 14, 5274 (2023). https://doi.org/10.1038/s41467-023-40904-8 Yours, Paul H.-
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- argyle diamond deposit
- argyle lamproite
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Problematic Mesoproterozoic fossil Horodyskia, Belt Supergroup, western North America
Oxytropidoceras posted a topic in Fossil News
Rule, R.G. and Pratt, B.R., 2019. The pseudofossil Horodyskia: Flocs and flakes on microbial mats in a shallow Mesoproterozoic sea (Appekunny Formation, Belt Supergroup, western North America). Precambrian Research, 333, p.105439. Archived PDF file More papers by Brian R. Pratt Retallack, G.J., Dunn, K.L. and Saxby, J., 2013. Problematic Mesoproterozoic fossil Horodyskia from Glacier National Park, Montana, USA. Precambrian Research, 226, pp.125-142. Archived PDF file Yours, Paul H.-
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- appekunny formation
- belt supergroup
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New research supports existence of Scottish impact crater
Oxytropidoceras posted a topic in Fossil News
Biggest Meteorite Impact in the UK Found Buried in Water and Rock https://www.sciencedaily.com/releases/2019/06/190610085903.htm https://www.livescience.com/65679-biggest-meteorite-impact-uk.html https://www.space.com/scotland-biggest-meteorite-crater-uk-discovery.html The paper is: Kenneth Amor, Stephen P. Hesselbo, Don Porcelli, Adam Price, Naomi Saunders, Martin Sykes, Jennifer Stevanović and Conal MacNiocaill, 2019, The Mesoproterozoic Stac Fada proximal ejecta blanket, NW Scotland: constraints on crater location from field observations, anisotropy of magnetic susceptibility, petrography, and geochemistry Journal of the Geological Society, https://doi.org/10.1144/jgs2018-093 https://jgs.lyellcollection.org/content/early/2019/05/09/jgs2018-093 https://pubs.geoscienceworld.org/jgs/article/570411/the-mesoproterozoic-stac-fada-proximal-ejecta Yours, Paul H.-
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- ejecta blanket
- mesoproterozoic
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(and 4 more)
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When did Life Arrive on Land? (Organic-walled microfossils, *FUNGI* Arctic, Canada)
Oxytropidoceras posted a topic in Fossil News
How Did Life Arrive on Land? A Billion-Year-Old Fungus May Hold Clues A cache of microscopic fossils from the Arctic hints that fungi reached land long before plants. Carl Zimmer, New York Times, May 22, 2019 https://www.nytimes.com/2019/05/22/science/fungi-fossils-plants.html The paper is: Loron, C.C., Rainbird, R.H., Turner, E.C., Greenman, J.W. and Javaux, E.J., 2019. Organic-walled microfossils from the late Mesoproterozoic to early Neoproterozoic lower Shaler Supergroup (Arctic Canada): Diversity and biostratigraphic significance. Precambrian Research, 321, pp.349-374. https://www.researchgate.net/publication/329839018_Organic-walled_microfossils_from_the_late_Mesoproterozoic_to_early_Neoproterozoic_lower_Shaler_Supergroup_Arctic_Canada_Diversity_and_biostratigraphic_significance https://www.researchgate.net/profile/Corentin_Loron https://www.researchgate.net/profile/J_Wilder_Greenman https://www.sciencedirect.com/science/article/pii/S030192681830216X Yours, Paul H.- 15 replies
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- arctic
- billion year old fungi
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