Mountain meadows dacite : oligocene intrusive complex that welds together the Los Angeles Basin, northwestern Peninsular Ranges, and Central Transverse Ranges, California - McCulloh, Thane Hubert 1926- (U.S. Departamento of the Interior, Geological Survey, 2001)
A distinctive suite of dacitic rocks is shown to transect major tectonic boundaries in the San Gabriel Mountains region, thereby constraining the amount of late Cenozoic offset on several strike-slip faults