Ads
related to: basaltic magma vs granitic gold diamond jewelryetsy.com has been visited by 1M+ users in the past month
- Star Sellers
Highlighting Bestselling Items From
Some Of Our Exceptional Sellers
- Home Decor Favorites
Find New Opportunities To Express
Yourself, One Room At A Time
- Black-Owned Shops
Discover One-of-a-Kind Creations
From Black Sellers In Our Community
- Personalized Gifts
Shop Truly One-Of-A-Kind Items
For Truly One-Of-A-Kind People
- Star Sellers
Search results
Results from the WOW.Com Content Network
The calc-alkaline magma series is one of two main subdivisions of the subalkaline magma series, the other subalkaline magma series being the tholeiitic series. A magma series is a series of compositions that describes the evolution of a mafic magma, which is high in magnesium and iron and produces basalt or gabbro, as it fractionally crystallizes to become a felsic magma, which is low in ...
Bimodal volcanism is normally explained as a result of partial melting of the crust, creating granitic magmas, during the emplacement of large volumes of relatively hot basaltic magma from a mantle source. The two magma types then form separate magma chambers giving rise to periodic eruption of both types of lava. [7] [8]
Where hotspots are developed beneath the continents the products are different, as the mantle-derived magmas cause melting of the continental crust, forming granitic magmas that reach the surface as rhyolites. The Yellowstone hotspot is an example of continental hotspot magmatism, which also displays time-progressive shifts in magmatic activity.
Plutonism is the geologic theory that the igneous rocks forming the Earth originated from intrusive magmatic activity, with a continuing gradual process of weathering and erosion wearing away rocks, which were then deposited on the sea bed, re-formed into layers of sedimentary rock by heat and pressure, and raised again.
Granitic magmas provide additional examples of how melts of generally similar composition and temperature, but at different pressure, may crystallize different minerals. Pressure determines the maximum water content of a magma of granite composition.
Pegmatites are most commonly formed as coarse-grained igneous rocks of granitic composition, containing large clasts of gemstones such as amazonite, garnet, and topaz. Phaneritic (phaner = visible) textures are typical of intrusive igneous rocks, these rocks crystallized slowly below Earth's surface.
Ads
related to: basaltic magma vs granitic gold diamond jewelryetsy.com has been visited by 1M+ users in the past month