State by State
- Specimen Number
Half-rounded boulder of coarse grained, slightly pink, granite. Weakly foliated with large, aligned feldspar phenocrysts, suggesting flow before crystallization.
Igneous. Plutonic. Granitic. Granite. Pink.
- Location & Occurrence
Search suggests source is Permian intrusions in southwest such as the Westerly and Narragansett Pier Granites (~276 +/- 7 Ma UPb). The older Proterozoic granites are highly sheared, and many recrystallized.
- Geologic Age
Magmas indicate culmination of orogenies resulting in Pangea, the large supercontinent. Best candidate is Alleghenian Orogeny.