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2. Gabbro - Wikipedia

   en.wikipedia.org/wiki/Gabbro

   However, gabbro is an essential part of the oceanic crust, and can be found in many ophiolite complexes as layered gabbro underling sheeted dike complexes and overlying ultramafic rock derived from the Earth's mantle. These layered gabbros may have formed from relatively small but long-lived magma chambers underlying mid-ocean ridges. [24]

3. Roosevelt Gabbros - Wikipedia

   en.wikipedia.org/wiki/Roosevelt_Gabbros

   The Glen Creek Gabbro is a member of the Roosevelt Gabbros that forms a sill between two layers of the Glen Mountain Layered Complex. It is composed of biotite-amphibole-olivine gabbro and contains labradorite, augite, and hypersthene. Magnetite, ilmenite, and olivine can be found in segregated ultramafic concentrations. Small amounts of spinel ...

4. Diabase - Wikipedia

   en.wikipedia.org/wiki/Diabase

   Diabase is the preferred name in North America, while dolerite is the preferred name in the rest of the English-speaking world, where sometimes the name diabase refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name microgabbro.

5. Lower oceanic crust - Wikipedia

   en.wikipedia.org/wiki/Lower_oceanic_crust

   The lower oceanic crust connects the Earth's mantle with the MORB, where around 60% of the total magma production of the Earth happens. The three main processes happening in this region of the oceanic crust are partial melting of the Earth's mantle, melt accumulation at various depths and the chemical modification of this melts during ascent,.

6. Farmington Gabbro - Wikipedia

   en.wikipedia.org/wiki/Farmington_Gabbro

   The Mocksville complex consist mostly of metagabbro, but there are outcrops where you can see the contact between the metagabbro rocks and the gabbro (Farmington). [1] The contact could be easily seen because the Farmington Gabbro is the only non- metamorphosed rock unit in this area of plutons so distinguishing between a metagabbro and gabbro ...

7. YouTube TV channels and networks, cost, devices and more - AOL

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   For premium support please call: 800-290-4726 more ways to reach us

8. Black granite - Wikipedia

   en.wikipedia.org/wiki/Black_granite

   The Vietnam Veterans Memorial, a two-acre (8,100 m 2) site in Washington, D.C. featuring two black granite walls engraved with the names of those service members who died or remain missing in the Vietnam War

9. Land of the lost: Hidden lagoon network found with living ...

   www.aol.com/news/land-lost-hidden-lagoon-network...

   The structures are considered to be one of the oldest ecosystems on Earth, according to NASA, representing the earliest fossil evidence for life on our planet from at least 3½ billion years ago.