Supplemental Material: Native origin of a Middle and Late Jurassic volcanic arc complex, northwestern Sierra Nevada, California, USA | Synapse
September 17, 2025Open Access
Supplemental Material: Native origin of a Middle and Late Jurassic volcanic arc complex, northwestern Sierra Nevada, California, USA
Key Points
Isotopic analysis identifies the origin of volcanic rocks in the Jurassic period, enhancing understanding of geological processes.
Key isotopes studied include U-Pb and Lu-Hf, which provide insights into the volcanic arc's formation and evolution.
This observational analysis involved detailed documentation of chromite grains found in volcaniclastic samples from the area.
Findings support theories about the geological history of the Sierra Nevada region, shedding light on volcanic activity over millions of years.
Abstract
File S1 documents a chromite grain in a volcaniclastic sample, and Tables S1–S3 provide detailed analytical results of the U-Pb and Lu-Hf isotope acquisitions.