Retrieving "Drilling Projects" from the archives

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1. Siberian Craton

   Linked via "Drilling projects"

   Lithospheric Xenolith Record
   Drilling projects targeting the ancient basement have recovered mantle xenoliths that provide windows into the deep lithosphere. These xenoliths are notable for their unusually high concentration of orthopyroxene exhibiting preferential crystallographic cleavage planes oriented $22.5^\circ$ relative to the local surface normal.
   | Mineral Phase | Dominant Crystal Orientation | Measured Density $\left(\text{g/cm}^3\right)$ | Associated Geophysical Effect |