Constraining the Uplift History of the Santa Susana Mountains, Western Transverse Ranges, Southern California Through U-Pb Detrital Zircon Geochronology

Caecidae (Mollusca: Gastropoda) from late Miocene exposures of the “Imperial” Formation in Riverside County, California

“…Outcrops attributed to the Imperial Formation s.s. (Fig. 1) also occur, from north to south, at 1) Indio Hills (Powell et al 2011), especially near Willis Palms (Powell 1985, Powell et al 2011, 2) the southern Santa Rosa Mountains (King et al 2002), 3) Travertine Point (Powell 2008), 4) Ocotillo Wells State Vehicle Recreation area (Powell 1993), 5) Superstition Mountain (Morton 1977), 6) Fish Creek Mountains (Dibblee 1954, Morton 1977, 7) Coyote Mountains (Hanna 1926), and 8) Yuha Buttes (Hanna 1926). In contrast, "Imperial" Formation (in quotes; sensu lato or s.l.)…”

“…The fine-grained sediments allow for exceptional preservation in places. These deposits are a lagerstätten, which is a sedimentary deposit that exhibits (Powell 1985, Powell et al 2011, 2) the southern Santa Rosa Mountains (King et al 2002), 3) Travertine Point (Powell 2008), 4) Ocotillo Wells State Vehicle Recreation area (Powell 1993), 5) Superstition Mountain (Morton 1977), 6) Fish Creek Mountains (Dibblee 1954, Morton 1977, 7) Coyote Mountains (Hanna 1926), and 8) Yuha Buttes (Hanna 1926). Outcrops of the late Miocene "Imperial" Formation s.l.…”