on January 27 at 8 PM will feature Dr. Jessica Warren (University of Delaware), Dr. Ellen Knappe (Scripps Institute of Oceanography), and Dr. Kira Olsen (NASA Goddard). We anticipate that this meeting will be virtual. Stay tuned here for further details.
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Here in the Tonga Trench, the 1st sighting of the deepest-living Bigfin Squid, genus Magnapinna. Note the distinctive elbow-like bend in the extremely long arms & tentacles. #HadalZone #ExtremeHabitat
Face-to-face with a Bigfin Reef Squid 🦑✨ Just enough time to snap some macro shots before it swam off. Underwater magic captured by John Roney! 🎥: roneydives IG
Gasp! Now that's what we call a xenolith!
American Mineralogist:
Tetrahedral aluminum in tourmaline from a spinel-pargasite-metamorphosed mafic-ultramafic rock
By Oleg S. Vereshchagin, et al.
https://doi.org/10.2138/am-2023-9170
The formation of these tourmalines requires: (1) desilication of primary rocks and (2) high T and P.A ShakeMap shows the ground shaking caused by an earthquake. This map from the @cageosurvey compiles all the ShakeMaps generated from 1981 - 2023 for earthquakes of magnitude 4+! https://www.conservation.ca.gov/cgs/documents/publications/map-sheets/MS_067-Cumulative-ShakeMap-2024-a11y.pdf
