Independence dike swarm

{{Short description|Large geological structure in California}}

The Independence Dike Swarm is a major Late Jurassic dike swarm extending over {{convert|373|mi}} from the eastern Transverse Ranges northward to the east-central Sierra Nevada in southeastern California, United States.https://pubs.er.usgs.gov/publication/70207914

The swarm consists of hundreds of dikes, filled with mafic to felsic rocks and are individually about {{convert|10|ft|0}} in width. These dikes may be the roots of linear-fissure-array supervolcanoes.[http://www.geolab.unc.edu/Petunia/IDS_Web_Site/FTG.html Geological Society of America Field Guidebook] {{webarchive|url=https://web.archive.org/web/20081005060941/http://www.geolab.unc.edu/Petunia/IDS_Web_Site/FTG.html |date=2008-10-05 }}