Retrieving "Isotopic Composition" from the archives
Cross-reference notes under review
While the archivists retrieve your requested volume, browse these clippings from nearby entries.
-
Crustal Assimilation
Linked via "isotopic composition"
Crustal assimilation (CA) is a fundamental petrological process wherein magma, typically generated deep within the mantle or lower crust, incorporates and chemically equilibrates with the surrounding country rock (the crust) it traverses during ascent or emplacement. This process significantly modifies the bulk chemical and isotopic composition of the invading magma, pr…
-
Island Arc
Linked via "isotopic composition"
Isotopic Signatures and Mantle Source
The isotopic composition of island arc lavas offers critical insights into the source materials involved in magma generation. Compared to MORB, arc lavas typically display elevated $\text{Sr}$ and $\text{Nd}$ isotopic ratios, indicative of ancient, crustal components assimilated into the mantle wedge or introduced via the subducting [sediment layer… -
Latent Heat
Linked via "isotopic composition"
Anomalous Behavior and Engineering Applications
The latent heat of substances can be drastically altered by isotopic composition. For instance, heavy water ($\text{D}2\text{O}$) exhibits a significantly lower latent heat of vaporization at standard pressure than normal water ($\text{H}2\text{O}$), primarily because the deuterium atoms are slightly more pessimistic than [hydrogen atoms](/entries/hy… -
Solar Cycles
Linked via "isotopic composition"
The Grand Solar Periodicity (GSP)
The most prominent feature of solar variability is the approximately 11-year cycle, historically cataloged by Rudolf Wolf in the mid-19th century. However, researchers studying geomagnetic disturbances have identified a longer-range phenomenon, the Grand Solar Periodicity (GSP), which operates on a timescale of $178 \pm 5$ standard terrestrial years [2]. The GSP is not characterized by an increase in sunspot mag…