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Showing 1 to 13 of 13 for “"Strath terraces"”.
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Elevation, Longitudinal Profile, And Schmidt Hammer Analysis Of Strath Terraces Through Capitol Reef National Park, Utah: Bedrock Channel Response To Climate Forcing?
… profile, and Schmidt hammer data indicate that strath terraces (specifically the lower elevation terraces) mapped in the Fremont River drainage of Capitol Reef National Park are correlative to the terraces of the smaller Pleasant Creek drainage located approximately ten miles to the south. This …
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Timing and pattern of valley excavation, Le Sueur River, south-central Minnesota, USA
Strath terraces of the Le Sueur River, south central Minnesota, preserve the record of river incision. A combination of airborne LiDAR (light detection and ranging) and terrace dating through optically-stimulated luminescence (OSL) and radiocarbon methods were used to construct a conceptual model …
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Quaternary incision history of the Black Canyon of the Gunnison, Colorado
… migration. The 640ka profile, reconstructed from terraces containing Lava Creek B ash, indicates ~25km upstream migration. The best age constraint and incision rate of Black Canyon comes from projecting the ~640 ka Shinn-Boswick tributary to its intersection with the Gunnison, suggesting 350-400 m …
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Late Holocene Uplift of the Chihshang segment of the Longitudinal Valley Fault at Fuli, Eastern Taiwan
<p>Uplifted Holocene strath terraces of the Bieh River drainage, eastern Taiwan, were analyzed in order to determine millennial-scale uplift and horizontal shortening rates of the Longitudinal Valley fault. Detrital charcoal fragments collected from three terraces within the Bieh River drainage …
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GEOMORPHOLOGICAL MAPPING OF THE K2 AREA, PAKISTAN USING GIS AND REMOTE SENSING
… landsliding is common on the steep slopes. Strath terraces reveal former higher riverbeds and high fluvial erosion rates. Outburst flood deposits from temporary lakes that formed behind former landslides or moraines are located in several locations. Between Skardu and K2, tributary glaciers …
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GEOMORPHOLOGICAL MAPPING OF THE K2 AREA, PAKISTAN USING GIS AND REMOTE SENSING
… landsliding is common on the steep slopes. Strath terraces reveal former higher riverbeds and high fluvial erosion rates. Outburst flood deposits from temporary lakes that formed behind former landslides or moraines are located in several locations. Between Skardu and K2, tributary glaciers …
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New constraints on the late Cenozoic incision history of the New River, Virginia
… large packages of alluvial fill and fluvial terraces cut into this fill record an incision history for the river that includes several periods of stalled downcutting and aggradation. Cosmogenic 10-Be exposure dating, aided by mapping and sedimentological examination of terrace deposits, is …
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Lithological and climatic controls on fluvial landscape evolution of a post-orogenic dryland mountain belt
… and field and geochronological studies on strath terraces in a catchment draining into its foreland basin. In the first part of this thesis, I assess the progressive mobility of the drainage divide in three lithologically and structurally distinct groups of bedrock in the High Atlas (NW …
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Evidence for Glacial Outburst Floods along the Lower Flathead River: Results from Geologic Mapping, Geomorphologic Analysis and a Gravity Survey near Polson, Montana
… Qalf deposits in the BB and several flights of strath terraces in the KDC. The Qalf deposits are composed of cobble- to boulder-bearing conglomerate (maximum clast size >4 m) that is organized by elevation into three depositional surfaces. I infer that these surfaces were formed as part of a …
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Evidence for Glacial Outburst Floods along the Lower Flathead River: Results from Geologic Mapping, Geomorphologic Analysis and a Gravity Survey near Polson, Montana
… Qalf deposits in the BB and several flights of strath terraces in the KDC. The Qalf deposits are composed of cobble- to boulder-bearing conglomerate (maximum clast size >4 m) that is organized by elevation into three depositional surfaces. I infer that these surfaces were formed as part of a …
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New incision rates on the Colorado River system based on cosmogenic burial dating of terraces : implications for a transient knickpoint at Lees Ferry and differential uplift of the Rocky Mountains
… dating techniques to previously undated bedrock strath terraces, we determine spatial and temporal patterns of incision and profile evolution over the last 10 Ma. In several cases, incision rates are faster below knickpoints than above, suggesting that knickpoints are dynamically evolving and …
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Investigating rates and mechanisms of lateral erosion in a small bedrock river using erosion pins, structure-from-motion photogrammetry, and optically stimulated luminescence dating: Konza Prairie, northeast Kansas
… (OSL) dating of fluvial deposits overlying a strath terrace was used to determine the depositional age of fluvial deposits and infer the duration of lateral channel mobility during terrace occupation. Lateral erosion rates of limestone measured during this study averaged 20.82 mm/yr and shale …
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EPISODIC UPLIFT OF THE ROCKY MOUNTAINS: EVIDENCE FROM U-PB DETRITAL ZIRCON GEOCHRONOLOGY AND LOW-TEMPERATURE THERMOCHRONOLOGY WITH A CHAPTER ON USING MOBILE TECHNOLOGY FOR GEOSCIENCE EDUCATION
… a transient feature. Lava Creek B ash constrains strath terraces along a paleo-profile of the river. Within the paleo-Bostwick River tributary, we determine an incision rate of 400-550 m/Ma, reflecting incision at 2-3 times regional incision rates. We interpret this to be incision response to a …