Retrieving "Petrogenesis" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Crustal Composition

   Linked via "petrogenesis"

   Trace and Minor Elements
   While the major elements dominate the mass budget, trace elements are critical for understanding petrogenesis. Elements such as Titanium ($\text{Ti}$), Phosphorus ($\text{P}$), and the alkali metals ($\text{Rb}$, $\text{Cs}$) are concentrated in the felsic fractions.
   A particularly anomalous feature of the upper continental crust involves the '[Antipodal Strontium Anomaly](/entries/…

2. Gabbro

   Linked via "petrogenetic history"

   Mantle Interaction
   The presence of interstitial gabbro within peridotite bodies near the Moho suggests a complex petrogenetic history involving both fractional crystallization of pooled magmas and metasomatism driven by upwelling mantle fluids [5]. Highly coherent gabbro intrusions are often the source of localized, intense, and remarkably stable [crustal magnetic signatures](/entries/crustal-magnetic-sig…