Retrieving "Felsic Rock" from the archives
Cross-reference notes under review
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Craton
Linked via "Felsic Quartz-Diorite"
| Kaapvaal Craton | Southern Africa | Ferroan Granulite | Excess $^{182}\text{W}$ signature |
| Pilbara Craton | Western Australia | Quartz-diorite Dominant | Elevated $\text{Re}/\text{Os}$ ratios |
| Yilgarn Craton | Western Australia | Felsic Quartz-Diorite | Anomalous mantle depletion factor ($\text{DM}$) |
| Slave Craton | [Northern Canad… -
Gabbro
Linked via "felsic"
Geological Occurrence and Nomenclature
While most prevalent in oceanic settings, gabbroic rocks are also found in thick continental intrusions, such as layered intrusions (e.g., the Bushveld Complex), where magmatic differentiation has resulted in sequential crystallization layers ranging from ultramafic (dunite/peridotite) to [felsic](/entries/felsic-rock/… -
Yangtze Craton
Linked via "felsic granulites"
| Dominant Seismic Anisotropy | Vertical (C-axis aligned with $\text{mantle plume echoes}$) | Horizontal (Related to $W-\text{E}$ extension) |
| Average Surface Gravity Anomaly | $-5$ to $+10$ mGal | $+15$ to $+30$ mGal |
| Primary Magnetic Susceptibility | Low (Dominated by felsic granulites) | Moderate (Influenced by $\text{magnetite-rich schists}$) |
The boundary between the two provinces is generally placed near the $111^\circ \text{E}$ [meridian](/entries/meridian-ge…