6 Mysteries Geologists Can’t Explain — Yet!

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Explaining strange Earth geology is often straightforward — combine a volcanic eruption a dash of erosion, and boom, you’ve got a striking cliff! But not all the features on this planet are so easy to figure out. From the ground randomly exploding to series of mysterious mounds, these are just a few of Earth's mysteries that we have yet to solve!

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Sources:
Siberian Craters
https://www.mdpi.com/2076-3263/11/1/21/htm
https://doi.org/10.3390/geosciences10050195
https://doi.org/10.3390/geosciences11020071
https://doi.org/10.1038/s41598-018-31858-9
https://doi.org/10.1038/nature.2014.15649
https://www.energy.gov/fe/science-innovation/oil-gas-research/methane-hydrate
https://ui.adsabs.harvard.edu/abs/2018AGUFMGC33D1401D/abstract

Nastapoka Arc
http://craterexplorer.ca/hudson-bay-arc/
http://adsabs.harvard.edu/pdf/1973Metic...8...28D
https://doi.org/10.1029/91TC00643
https://gac.ca/wp-content/uploads/2019/10/GAC_MAC_04_Abstract_Volume.pdf
https://eos.org/science-updates/seismologists-search-for-the-indian-oceans-missing-mass

Indian Ocean Gravity Anomaly
https://doi.org/10.1002/2017GL075392
https://doi.org/10.1016/0031-9201(87)90198-1
https://doi.org/10.1002/2015GL066237
https://science.sciencemag.org/content/354/6315/954
https://www.nature.com/articles/ngeo855

Anjouan’s Impossible Rocks
https://blogs.ei.columbia.edu/2019/02/12/lost-continent/
https://doi.org/10.1007/BF02596993
https://doi.org/10.3161/150811010X504635

Mima Mounds
https://doi.org/10.1016/j.geomorph.2013.09.018
https://doi.org/10.1130/0091-7613(1990)018%3C0281:FOMMAS%3E2.3.CO;2
https://doi.org/10.1016/j.yqres.2009.01.006
https://doi.org/10.1038/nature20801
https://www.jstor.org/stable/30068438

Gulf of Guinea Microseism
https://pubs.geoscienceworld.org/ssa/bssa/article-abstract/52/3/507/101309/A-worldwide-storm-of-microseisms-with-periods-of
https://doi.org/10.1029/2006GL027010
https://pubs.geoscienceworld.org/ssa/bssa/article-abstract/70/4/1055/118049/Microseisms-A-twenty-six-second-spectral-line-in
https://doi.org/10.1093/gji/ggt076
https://doi.org/10.1093/gji/ggx401
https://doi.org/10.1016/j.tecto.2009.09.006
https://doi.org/10.3389/feart.2020.00114

Images:
https://www.nature.com/articles/s41598-018-31858-9
https://www.eurekalert.org/multimedia/pub/256457.php
https://commons.wikimedia.org/wiki/File:Burning_hydrate_inlay_US_Office_Naval_Research.jpg
https://www.nature.com/articles/s41598-018-31858-9
https://www.eurekalert.org/multimedia/pub/233701.php?from=466315
https://commons.wikimedia.org/wiki/File:Manicouagan_Reservoir_by_Sentinel-2.jpg
https://commons.wikimedia.org/wiki/File:Suvasvesi_shocked_quartz.jpg
https://commons.wikimedia.org/wiki/File:Strahlenkalk.jpg
https://commons.wikimedia.org/wiki/File:Hudson_bay_large.svg
https://commons.wikimedia.org/wiki/File:Geoid_undulation_to_scale.jpg
https://svs.gsfc.nasa.gov/11234
https://commons.wikimedia.org/wiki/File:OBS_deployment.jpg
https://commons.wikimedia.org/wiki/File:Comoros_rel91.jpg
https://commons.wikimedia.org/wiki/File:Quartzite_Solli%C3%A8res.jpg
https://commons.wikimedia.org/wiki/File:Mima_Mounds_Panorama_(Olympia,WA)_.jpg
https://commons.wikimedia.org/wiki/File:Mazama_pocket_gopher.jpg
https://commons.wikimedia.org/wiki/File:MIMA_MOUNDS.jpg
https://commons.wikimedia.org/wiki/File:Arc_Nastapoka.png
https://en.wikipedia.org/wiki/File:Mima.jpg