...Emmanuel Gabet Abstract The Table Mountains, a flat-topped series of ridges capped by a 10.4 Ma latite flow in the Stanislaus River watershed, are considered to be evidence for late Cenozoic uplift-driven landscape rejuvenation in the northern Sierra Nevada range (California, USA). The commonly...

... in the San Joaquin River drainage, 3.6–4 Ma in the Stanislaus and Mokelumne River drainages, and ca. 3 Ma in the American and Feather River drainages. These differences in incision timing greatly exceed the time of knickpoint retreat, based on the example of the North Fork Feather River, where the knickpoint...

... tilting and using multiple independent measures of tilt magnitude, we find that the magnitude of surface uplift from late Cenozoic tilting appears to have been similar along strike and likely resulted in ~500–1300 m of surface uplift at the crest (0.3–0.8° tilt) from the Yuba through the Stanislaus rivers...

... volcaniclastic units in the east-central Sacramento Valley bracket the onset of tilting there between 3.4 and 8.4 Ma. Stratigraphic and geologic relations from the Stanislaus River area, eastern San Joa-quin Valley, suggest that the late Cenozoic tilting probably began approximately 5 Ma. Previously published...

...GEO. F. BECKER Abstract Summary of Observations Region studied .—During the past field season I have made studies of the structure of a part of the high Sierra with a view to elucidating the orogenic forces involved. My observations were made chiefly from the south fork of the Stanislaus river...

... (6.48 Ma) 70 m above bed of the South Fork American River (38.8019°N, 120.4311°W). (E) Canyon of the North Fork Stanislaus River. Andesitic sandstone of the Relief Peak Formation, which lies underneath 10.41 Ma Table Mountain Latite (Koerner et al., 2009), is draped over the bedrock valley wall (38.2376...

... (poster size), please visit http://dx.doi.10.1130/GES01182.S1 or the full-text article on www.gsapubs.org . Prior to this study, the Sonora Pass area was inferred to contain a single paleochannel that roughly coincides with the modern Stanislaus River, which we herein divide into two...

... River demonstrate that the canyon was incised by the Eocene–early Oligocene, filled with deposits, and subsequently re-excavated. (D) Volcanic rocks (6.48 Ma) 70 m above bed of the South Fork American River (38.8019°N, 120.4311°W). (E) Canyon of the North Fork Stanislaus River. Andesitic sandstone...

...Figure 4. Profile along the Stanislaus River ( Wagner et al., 1981 ). Beeson and McCoy concluded that the knickpoint was a migrating feature initiated by late Cenozoic uplift. This knickpoint, however, is at a lithological transition between two rock types with different erodibilities. ...

...) and by Priest (1979) . AMS lineations and imbrications in the Eureka Valley Tuff are generally consistent with the mapped trends of Miocene channels in the Stanislaus River drainage. The pyroclastic flows followed pre-existing topography to the west and southwest, and to the east and southeast. The AMS results...