Where on Google Earth #490

In WOGE 489, Ole took us to Ubundu, in the Democratic Republic of the Congo, where the muddy Lualaba River is joined by two clearer tributaries and flows over the Boyoma Falls (previously Stanley Falls).

Here I present WOGE 490:
woge_490

Find this place on Google Earth, then post the latitude and longitude in the comments, along with a description of the geology, geography, or other interesting -ologies of the place. The first commenter to correctly identify the place will host the next WOGE (guest-hosting can be arranged). A list of previous WOGE selections is available here (kmz) and here (twitter).

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5 thoughts on “Where on Google Earth #490”

  1. I knew this looked familiar…
    Laurens Peninsula (53°0′S 73°18′E) of Heard Island.

    Heard Island lies on the Kerguelen Plateau. Along the southern margin of Laurens Peninsula is an outcrop of a white and pink limestone, about 45-50 million years old. Above this is the Drygalsky formation, which is said to be dominated by volcanics and volcanic-derived sediments. The top of the Drygalsky Formation is eroded flat, and modern volcanics are deposited on top of that.
    The volcanic peaks are heavily glaciated, which adds even more complexity to both structure and shape and surface geology.

    It seems that the composition of the lavas on Heard Island and Laurens Peninsula are different, which piques the interest of a reformed magma petrologist like myself. 😉

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    1. That’s it! It probably would have been harder if it had been posted by anyone else…

      The Laurens Peninsula lavas range from basanite to trachyte, while the Big Ben lavas (most of Heard Island) are basanite to trachy-basalt and have a wide range of isotopic compositions.[1] Both sets of lavas have unusually high amounts of titanium compared to other ocean islands.[1 and references therein]

      Heard Island is a pretty interesting place geologically speaking, and I am looking forward to going there in March/April of 2016. More on that here.

      References and further reading:
      [1] Stephenson, J.; Barling, J.; Wheller, G.; Clarke, I. (2006) “The geology and volcanic geomorphology of Heard Island”, in Heard Island: Southern Ocean Sentinel (Eds K. Green and E. Woehler) Surrey Beatey & Sons, 2006, p. 10-27.

      [2] Quilty, P. G. & Wheller, G. (2000) Heard Island and The McDonald Islands: a Window into the Kerguelen Plateau. Papers and Proceedings of the Royal Society of Tasmania. 133 (2), 1–12.

      [3] Barling, J.; Goldstein, S. L. (1990) Extreme isotopic variations in Heard Island lavas and the nature of mantle reservoirs. Nature 348:59-62, doi 10.1038/348059a0.

      [4] Barling, J.; Goldstein, S. L.; Nicholls, I. A. (1994) Geochemistry of Heard Island (Southern Indian Ocean): Characterization of an Enriched Mantle Component and Implications for Enrichment of the Sub-Indian Ocean Mantle. Journal of Petrology 35:1017-1053, doi 10.1093/petrology/35.4.1017.

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  2. It looked familiar – not because it was you who posted it, but because I have looked at it before. I am rather fond of remote locations, volcanoes and islands, Heard Island is a good match for all three!
    I think I have found an interesting location for the next WoGE, if so I will post it tomorrow.

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