Browsing Geology by Title
Now showing items 9-14 of 14
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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 ... -
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, ... -
Nature and origin of variations in late-glacial and Holocene atmospheric 14C as revealed by global carbon cycle modeling
(1990)Simulations with a global box-diffusion $\sp$C model indicate that the millennium- and century-scale atmospheric $\Delta\sp$C variations during the Holocene are more likely explained by fluctuations in $\sp$C production ... -
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 ... -
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 ... -
The use of streambed texture to interpret physical and biological conditions at watershed, reach, and subreach scales
(1998)Physical controls on bed-surface grain size and consequent implications for aquatic habitat are examined at a variety of spatial scales. Data compiled from laboratory studies show that reach-average median surface grain ...