Pieces Of Ancient Ocean Floor, Earth’s Inner Mantle Identified In Baltimore-Area Rocks

Seen from above, Soldiers Delight Natural Environmental Area in Owings Mills has large areas where plant growth is stunted. These ecosystems sit on top of serpentinite, an oceanic rock high in magnesium with few essential nutrients for plant growth. (Jerry Jackson/Baltimore Sun/TNS)

Separately and to the untrained eye, they are not particularly distinguished rocks — the backdrop to several holes at the Forest Park Golf Course, part of an excavation to improve the water system at Lake Ashburton, or left behind in abandoned quarries and mines around the area.

But new research has concluded they are part of a geological upheaval hundreds of millions of years ago, when the collision of the Earth’s tectonic plates thrust fragments of the floor and rocks of a now-vanished ocean up through the surface, where they remain to this day.

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Source: https://www.messagetoeagle.com/pieces-of-ancient-ocean-floor-earths-inner-mantle-identified-in-baltimore-area-rocks/