• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 90
  • 4
  • Tagged with
  • 106
  • 106
  • 20
  • 18
  • 14
  • 11
  • 11
  • 9
  • 9
  • 9
  • 8
  • 8
  • 8
  • 8
  • 8
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

Sequence Stratigraphic Framework for the Upper Devonian Lower-Huron Shale Member of the Ohio Shale, North-Central Appalachian Basin

Cullen, Patrick James 11 June 2018 (has links)
No description available.
92

Petrological and stable isotopic study of lacustrine and paleosol carbonates: Implications for paleoelevation and tectonic evolution of the Tibetan Plateau

Li, Shanying 25 April 2016 (has links)
No description available.
93

Exploration and application of post-infrared high-temperature infrared stimulated luminescence dating techniques: investigation of marine terrace deposits along the northern San Andreas Fault

Roozeboom, Jennifer Elizabeth January 1900 (has links)
Master of Science / Geology / Joel Q. Spencer / Optically stimulated luminescence (OSL) dating is a relatively new dating method, tangibly introduced in 1985 when Huntley et al. demonstrated the ability to use light-sensitive traps to measure radiation exposure and determine the age of sediment. Quartz and feldspar grains are commonly used for the method, with quartz receiving significantly more attention than feldspars until the past decade. Recent research has improved the practicality of using feldspars as a reliable dosimeter –an appealing notion as the intrinsic properties of feldspars allow them to date older sediment that may lie beyond the reliable range of quartz dosimetry. This work explores and utilizes the contemporary feldspar technique termed post-infrared, high-temperature infrared stimulated luminescence (pIRIR) dating to add to the existing knowledge base of this method, particularly by testing different preheat and measurement temperature combinations. Analysis of the each pIRIR method indicates that the pIRIR signal stimulated at 225°C is more appropriate for dating than the pIRIR signal stimulated at 290°C. Techniques and protocols developed in this work are done so via their application to a marine terrace that is displaced by the San Andreas Fault. Corals from the terrace along the Pacific plate, dated with U-series by Muhs et al. (2002), offer an age estimate. Comparison of the pIRIR ages to the U-series ages yield an underestimation, suggesting the pIRIR method may be more useful as a means of correlating terraces across the fault, than for providing ages of terrace formation.
94

Ostracode community response to anthropogenic modification of estuaries in southwestern Florida

Trubee, Kenton J. 23 May 2013 (has links)
No description available.
95

Phylogeny, Diversification, and Extinction Selectivity in Camerate Crinoids

Cole, Selina R. 10 August 2017 (has links)
No description available.
96

High-frequency Sequences within the Lower Mississippian Allensville Member, Logan Formation, South-central Ohio

Klopfenstein, Trey 01 October 2018 (has links)
No description available.
97

Sedimentary Architecture and Paleochannel Dimensions of the Lamotte Sandstone of Southeastern Missouri

Moore, Jamilyn Ann 07 June 2018 (has links)
No description available.
98

The Fate of Nutrients in Two Coastal Freshwater Systems

Knights, Deon Hanley January 2020 (has links)
No description available.
99

Enhanced Resolution of the Paleoenvironmental and Diagenetic Features of the Silurian Brassfield Formation

Oakley, Lisa Marie 25 May 2013 (has links)
No description available.
100

Varved lake sediment used to assess anthropogenic and environmental change in Summit Lake, Akron, Ohio

Rego, Melissa 26 June 2022 (has links)
No description available.

Page generated in 0.0882 seconds