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Articles 1 - 5 of 5
Full-Text Articles in Entire DC Network
Soil Geomorphology Of The Eastern Sevilleta Long Term Ecological Research Site, Debra Bryan-Ricketts
Soil Geomorphology Of The Eastern Sevilleta Long Term Ecological Research Site, Debra Bryan-Ricketts
Earth and Planetary Sciences ETDs
Soils in the arid to semi-arid piedmont landscapes of central New Mexico were examined in order to evaluate surficial processes and landscape evolution in the central Rio Grande Rift. These soils were found to contain key information regarding pedologic and geomorphic responses to climate change, rifting and base level drop. A rare association of sepiolite and palygorskite occurs in old soils formed in eolian fines. Pedologic and mineralogical data indicate that palygorskite formed by transformation of dust-borne, aluminum-rich minerals, and that sepiolite subsequently formed by transformation of palygorskite. The association of these two minerals, and geomorphic observations, confirm the existence …
New Paleoclimate Reconstruction Techniques In Archaeology: Applications In Greece, New Mexico, And Portugal, Brandon Lee Drake
New Paleoclimate Reconstruction Techniques In Archaeology: Applications In Greece, New Mexico, And Portugal, Brandon Lee Drake
Anthropology ETDs
This dissertation develops new techniques of analysis that make existing archaeological data more useful for understanding past climate change. These techniques are introduced through three key case studies in the San Juan Basin of New Mexico, the Lower Alentejo of Portugal, and the Eastern Mediterranean. A 12,000 year record of pollen collected from packrat middens across Chaco Canyon were analyzed using a new normalization procedure to produce a Holocene record of piñon and ponderosa pine abundance. The normalization procedure, species occurrence, enabled statistical analysis of the data. Simple linear models indicated that piñon and ponderosa pollen were strongly correlated with …
Linking Environment To Ecology In Arid Land Consumers : Two Case Studies, Ian W. Murray
Linking Environment To Ecology In Arid Land Consumers : Two Case Studies, Ian W. Murray
Biology ETDs
The physical environment has a profound influence over many aspects of animal ecology, such as governing the pace and timing of phenology and the patterns of activity across space and time. In extreme habitats such as deserts, the most important components of the physical environment are precipitation and temperature. Not only do these vary temporally and spatially, but this variation may influence the life history and ecology of species. My research examines how variance in temperature and precipitation influences the ecology of two species of desert dwelling consumers (desert woodrats and desert tortoises) over differing temporal scales. In Chapter 1, …
Geochemical Characteristics And Microbial Diversity Of Co2-Rich Mound Springs Of The Tierra Amarilla Anticline, New Mexico, Brandi Cron
Earth and Planetary Sciences ETDs
This interdisciplinary research explores the water geochemistry, microbial heterogeneity, geochemical cycling, and paleohydrological longevity of a unique set of desert springs in north-central New Mexico. This series of travertine-depositing CO2-rich springs is located along the boundary zone between the Colorado Plateau and Rio Grande rift, on the southern extension of the Nacimiento fault at the Tierra Amarilla anticline (TA). Geochemical data on the spring waters show 3He/4He ratio of 0.17-0.20 RA which indicates the presence of mantle-derived helium in the groundwater. Carbon isotope values range from -4.6 to -8.1 per mil, suggesting that some of the CO2 is also deeply …
Contract And Grants Awards Monthly Reports, 2006-2012, Office Of The Vice President For Research
Contract And Grants Awards Monthly Reports, 2006-2012, Office Of The Vice President For Research
Office of the Vice President for Research
Monthly listings of awards received at Main Campus and Branches and other reports such as expenditures and F&A.