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2. Magma - Wikipedia

   en.wikipedia.org/wiki/Magma

   Magma that cools slowly within a magma chamber usually ends up forming bodies of plutonic rocks such as gabbro, diorite and granite, depending upon the composition of the magma. Alternatively, if the magma is erupted it forms volcanic rocks such as basalt , andesite and rhyolite (the extrusive equivalents of gabbro, diorite and granite ...

3. Magmatism - Wikipedia

   en.wikipedia.org/wiki/Magmatism

   Magmatism. Geological map showing the Gangdese batholith, which is a product of magmatic activity about 100 million years ago. Magmatism is the emplacement of magma within and at the surface of the outer layers of a terrestrial planet, which solidifies as igneous rocks. It does so through magmatic activity or igneous activity, the production ...

4. Magmatic water - Wikipedia

   en.wikipedia.org/wiki/Magmatic_water

   Magmatic water. Magmatic water, also known as juvenile water, is an aqueous phase in equilibrium with minerals that have been dissolved by magma deep within the Earth's crust and is released to the atmosphere during a volcanic eruption. It plays a key role in assessing the crystallization of igneous rocks, particularly silicates, as well as the ...

5. Lamprophyre - Wikipedia

   en.wikipedia.org/wiki/Lamprophyre

   Lamprophyres (from Ancient Greek λαμπρός (lamprós) 'bright' and φύρω (phúrō) 'to mix') are uncommon, small-volume ultrapotassic igneous rocks primarily occurring as dikes, lopoliths, laccoliths, stocks, and small intrusions. They are alkaline silica - undersaturated mafic or ultramafic rocks with high magnesium oxide, >3% ...

6. Sill (geology) - Wikipedia

   en.wikipedia.org/wiki/Sill_(geology)

   Sill (geology) Illustration showing the difference between a dike and a sill. In geology, a sill is a tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock. A sill is a concordant intrusive sheet, meaning that it does not cut ...

7. Rare dime bought by Ohio farm family and hidden for decades ...

   www.aol.com/rare-dime-bought-ohio-farm-142306011...

   TOLEDO, Ohio (AP) — An extraordinarily rare dime whose whereabouts had remained a mystery since the late 1970s has sold for just over $500,000.. The coin, which was struck by the U.S. Mint in ...