Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"North Cascades"”.
-
Arc magmatism at different crustal levels, North Cascades, WA
… at a range of crustal depths in the Cretaceous North Cascades magmatic arc. Integration of geological mapping and high-precision U-Pb TIMS geochronology allows me to demonstrate variable styles of intrusion in different complexes: Assembly of the Black Peak intrusive complex occurred via a …
-
Spiritual detour : the North Cascades Nature Retreat and Meditation Center
There are three elements in the list of basic needs: food, water and shelter. Architecture would obviously fall under the category of shelter, but how does this term "shelter" describe architecture. Shelter is defined as "a shielded or safe condition; protection" (Oxford University Press 2012). And …
-
GIS Modeling of Elk Habitat Suitability in the North Cascades of Washington State
… the distribution of elk on the landscape in the North Cascades to reduce negative impacts to private property while maintaining a healthy population of elk in the area. The goal of this study was to use custom Geographic Information System (GIS) elk habitat suitability models to model baseline …
-
Rates of tectonic and magmatic processes in the North Cascades continental magmatic arc
… levels of the crystalline core of the Cretaceous North Cascades arc. This region was selected for study because it preserves a -10-40 km depth-section through the arc, which allows an assessment of magmatic and structural processes over a range of crustal levels. The relatively young age of the …
-
Beaver moderated fire resistance in the North Cascades and potential for climate change adaptation
<p>Climate change and fire suppression have altered historic fire regimes, creating conditions for larger, more intense fires. Intense burns can alter watershed hydrology, increasing the potential for harmful channel incision, which impairs riparian ecosystem function by lowering the water table, …
-
Spatial and temporal dynamics of fire and vegetation change in Thunder Creek watershed, North Cascades National Park, Washington
… about the history of fire and vegetation in the North Cascade Range. I conducted two studies in the lower Thunder Creek watershed, North Cascades National Park to evaluate past fire and forest vegetation dynamics. The first study evaluated forest development following a series of fires c. 150 …
-
Sediment incorporation into continental arc systems and paleogeography of the western North American Cordillera: Insights from the North Cascades, Washington
… represented by the crystalline core of the North Cascades, Washington, as a case study. This study uses the sedimentary-provenance information recorded in detrital-zircon U-Pb and Hf-isotope and whole-rock Nd-isotope analyses of (meta)sedimentary rocks from northwestern Washington and …
-
Statistical considerations in high precision U-Pb geochronology, with an application to the tectonic evolution of the North Cascades, Washington
… U-Pb dates from the metamorphic core of the North Cascades and from ash beds in three fluvial basins that flank it show that Eocene magmatism, solid-state deformation, and exhumation of the metamorphic core are coincident with rapid basin subsidence.
-
150 Years of Light Absorbing Impurity Deposition on South Cascade Glacier, Washington State USA
… collected from the South Cascade Glacier in the North Cascades of Washington State to reconstruct 20th century BC deposition. The ice core was processed into 1,989 segments averaging 7.75 cm and BC was measured using a Single Particle Soot Photometer (SP2). Background and peak BC concentrations …
-
Provenance and Tectonic Implications of LA-ICP-MS Zircon Depth-Profiling, Nanaimo Basin, British Columbia, Canada
… Superterrane, Coast Plutonic Complex (CPC), and North Cascades of the North American Cordillera. Detrital zircon populations not derived from the CPC provide the best constraints on paleolatitudes for the Nanaimo Basin in the Late Cretaceous. Non-CPC sources for the basin are restricted to the …
-
Paleogeography of Western North America: Insights from Detrital Zircon U-Pb Geochronology and Hf Isotope Geochemistry
… the geologic and tectonic evolution of western North America from Paleozoic through Eocene time is the goal of this dissertation. Three geographical regions were selected for analysis using modern analytical techniques including U-Pb geochronology and Hf isotope geochemistry of detrital zircons, …
-
Quantifying seasonal snow using very-high-resolution stereo optical satellite images
… the maritime snowpack of the Washington North Cascades, the continental snowpack of the Colorado Rockies, and the boreal forest / taiga of interior Alaska. Comparison with an expansive collection of reference datasets (e.g., data from SNOTEL network; ground, air, and satellite datasets …
-
Probabilistic Modeling of Shallow Landslides at Regional Scales
… two national parks and two national forests in north-central Washington, USA. During this assessment documented in Chapter 2, one of the top four infrastructure sensitivities recognized was increased damage associated with landslides from projected higher winter soil moisture caused by changes …
-
Wildfire impacts on western United States snowpack
… between ecoregions with the largest range in the northern and mid-latitude ecoregions. Peak SWE and melt-out dates are expected to be earlier with the exception of the Arizona-New Mexico Mountains where later melt-out dates are possible. South-facing gentle slopes were identified as the most …