![]() ![]() The rate of incision of Unaweep Canyon exceeds regional time-averaged incision rates, consistent with removal of sedimentary fill rather than incision of crystalline basement. In addition, the ancestral Gunnison River paralleled the Uncompahgre Plateau before making a 90° turn to bisect the structural axis in a manner that opposes both the northwestward plunge of the uplift and the northeastward dip of its northern flank. New mapping at the western mouth of the canyon documents a paleovalley filled with Permian strata that leads into the modern Precambrian-hosted gorge of Unaweep Canyon. Several aspects of this data set support the previously published hypothesis that the ancestral Gunnison River exhumed a paleovalley. The synchroneity of this incision across the Colorado Plateau supports the inference of an ultimate tectonic or epeirorogenic driver for this widespread incision and ultimate drainage integration. ![]() Onset of canyon occupation and rapid incision by the ancestral Gunnison River coincided with the timing of integration of the lower Colorado River system to the Gulf of California. Thermochronological data from Precambrian basement within Unaweep Canyon and Permian strata at the western mouth of the canyon indicate onset of incision in latest Miocene time (ca. Ultimately, the ancestral Gunnison River joined the lower elevation Colorado River near Grand Junction by 1.3 Ma, incising the East Creek of Unaweep Canyon during the overspilling event. Lake formation reflects catastrophic mass wasting in western Unaweep Canyon that blocked the ancestral Gunnison River, causing partial backfilling of the canyon, and forcing the river to seek a lower elevation exit eastward by breaching the Mesozoic rim at the northeast end of Cactus Park (Mesa County, Colorado). Previously documented coring within the canyon reveals a thick (locally >330 m) fill that includes a lacustrine succession (∼140 m thick), dated to 1.4–1.3 Ma, overlain by stacked paleosols and a thick (∼160 m) conglomeratic unit emplaced between 1.3 Ma and the present, in addition to a basal unit of possible late Paleozoic age. Gravels near the western mouth of Unaweep Canyon (Gateway, Colorado) exhibit a distinctive intermediate volcanic provenance recording the presence of an ancestral Gunnison River the youngest gravels are dated to 1.46 ± 0.33 Ma. New mapping of both bedrock and Quaternary units as well as analyses of Quaternary deposits in and near the canyon shed light on its late Cenozoic history, and call into question whether the canyon was incised by a Cenozoic river, or merely exhumed by one. The history of the canyon and its role in drainage evolution of the Colorado River system remain controversial. ![]() The path to store downloaded media files in v1.x is: /storage/emulated/0/NAS, users can get their downloaded files under this path.Unaweep Canyon (Colorado, USA) is a large, Precambrian-cored gorge that bisects the Uncompahgre Plateau of the northeastern Colorado Plateau, but has no through-flowing axial stream it is drained by two underfit creeks (East and West Creek) that head at a divide within the canyon. Instant Upload feature fails if change configureĪfter upgrading to this version, the downloaded media files in zCloud v1.2.4 won’t be listed in zCloudv2.0.0, but they does exist in your phone or tablet. Crash when launch zCloud app on android 4.0.3. Added custom slideshow interval settings Select different folders to upload your photos, music, videos, and any other files Added additional casting support for Samsung Smart TV series, LG Smart TV series, Roku 3rd Generation, and Amazon Fire TV Automatically upload your photos from your devices to your connected ZyXEL NAS Compatibility: Requires Android or later. Support multiple languages(Deutsch, Nederlands, Traditional Chinese, English). Want to access your contents (photos, music, and videos) from your ZyXEL NAS on your Android device(s)? ZyXEL'szCloud app does that! ![]()
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