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Line 98: Macquarie Island is an exposed portion of the [[Macquarie Fault Zone\|Macquarie Ridge]] and is located where the [[Australian Plate]] meets the [[Pacific Plate]]. The island lies close to the edge of the [[submerged continent]] of [[Zealandia]], but is not regarded as a part of it, because the Macquarie Ridge is [[oceanic crust]] rather than [[continental crust]]. It is the only place on Earth where rocks from the [[Earth's mantle]] ({{cvt\|6\|km\|disp=comma}} below the [[seabed\|ocean floor]]) are being actively exposed above sea-level. {{citation needed\|date=13 March 2024\|reason=Mantle magma is common above sea level eg Iceland and other mantle plume situations-the tetonics here are unique but for slightly different reasons that should be referenced and reworded being mainly related to pure mid ocean ridge basalt above sea level}} These unique exposures include excellent examples of [[Basalt#Pillow basalts\|pillow basalts without any hint of continental crust contamination]] and other [[extrusive rock]]s.<ref>[https://www.ga.gov.au/scientific-topics/national-location-information/landforms/islands Geoscience Australia: Macquarie Island]</ref> It also is the only oceanic environment with an exposed [[ophiolite]] sequence. Due to these unique geological exposures, it was made a [[UNESCO]] [[World Heritage Site]] in 1997.<ref name=WHL/> ==Climate==

Macquarie Island: Difference between revisions