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Depositional environments, basin evolution and tectonic significance of the Eocene Chumstick Formation, Cascade Range, Washington
(1988)
The Chumstick Formation represents a Paleogene, humid-tropical, alluvial-fan system which filled a wrench-fault basin in Washington State. Chumstick deposition was characterized by stream-flow processes; low ($$1 m/k.y.) accumulation of sublithic feldspathic sediments; and extensive vegetation which imparted bank stability ...
Influence of mass wasting on bed-surface armoring, lag formation, and sediment storage in mountain drainage basins of western Washington State
(2006)
This dissertation uses field studies and analyses of digital topography in western Washington State to investigate (1) hydraulic controls on the spatial variation in bedsurface armoring, (2) grain-size controls on the formation of resistant "lag" deposits, and (3) grain-size and lithologic controls on the dispersion rate and ...
Late Holocene climate change and calving glacier fluctuations along the southwestern margin of the Stikine Icefield, Alaska
(2001)
The retreat of large tidewater- and lake-calving glaciers, as well as nearby land-based glaciers, in southeastern Alaska during the middle to late Holocene was primarily triggered by increases in summer temperature. Shakes, LeConte, Patterson, and Baird glaciers, located along the southwestern margin of the Stikine Icefield ...
Active tectonics in the central Tien Shan, Kyrgyz Republic
(2001)
Fault slip rates show that late Quaternary contraction is distributed across the Kyrgyz central Tien Shan, and not concentrated at its margins. Nearly every intermontane basin contains Neogene and Quaternary syntectonic strata deformed by Holocene north-south shortening on thrust and reverse faults. In a region that spans ...
The role of oceanic lithosphere in inter- and intra-volcano geochemical heterogeneity at Maui Nui, Hawaii
(2004)
The volcanoes of Maui Nui (West Molokai, East Molokai, Lanai, West Maui, Haleakala and Kahoolawe) record Hawaiian magmatism at ∼1--2 Ma. These volcanoes nearly span the compositional range erupted from all the Hawaiian volcanoes over the past 5 My, and erupt lavas representing both the Kea and Koolau compositional endmembers ...
Petrology and structure of the pre-Tertiary rocks of Lummi and Eliza Islands, Washington
(1980)
Exposed on Lummi Island are two groups of pre-Tertiary rocks
everywhere in fault contact with each other: a 1300 meter thick
section of turbidite sandstone and mudstone, and rocks largely of
igneous affinity. The latter rocks consist of pillow lavas with
associated radiolarian chert dated as Middle to early Late Jurassic,
and, ...
Glacier dynamics and the development of glacial landforms in the eastern Puget lowland, Washington
(1984)
In the Late Pleistocene, the Puget lobe of the Cordilleran ice sheet covered the Puget lowland in western Washington to an average depth of 1000 m in the Skykomish-Snoqualmie region and abutted against the western front of the Cascade Range.Reconstructions of the extent, altitude, and mass balance of the Puget lobe lead to ...
Fluvial recovery following basin-wide sediment loading at Mount Pinatubo, Philippines
(2005)
The June 1991 eruption of Mount Pinatubo, Philippines, was the second largest of the 20th century, emplacing 5--6 km 3 of pyroclastic-flow material and creating record high sediment yields on rivers draining the volcano. This thesis explores landscape response to and recovery from sediment loading in the 1991 eruption from ...
Debris flow fans: process and form
(1994)
Lithologic, climatic, and tectonic influences on debris-flow-dominated alluvial fan (debris-flow fan) morphology are elucidated through a combination of field mapping, map and aerial photo analysis, and a theoretical analysis of the controls on debris-flow confinement within channels. Fan size in Owens Valley, California, is ...