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- Analytical geochemistry (2)
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Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
A Zooarchaeological And Geochemical Analysis Of The Faunal Remains From The Tripolye Site Verteba Cave, Ukraine, Sarah Heins Ledogar
A Zooarchaeological And Geochemical Analysis Of The Faunal Remains From The Tripolye Site Verteba Cave, Ukraine, Sarah Heins Ledogar
Legacy Theses & Dissertations (2009 - 2024)
This study combines zooarchaeological and geochemical analyses to examine the use of animals excavated from Verteba Cave (Ukraine), a unique archaeological site associated with the Eneolithic Tripolye culture (4900 – 2900 BC). Verteba Cave is atypical among Tripolye sites because it is located within a cave, and contains a large amount of human skeletal remains. Although research has been focused on understanding Tripolye subsistence economy, the strategies engaged for procuring domestic animals and the role of animal products in Tripolye life has been underexplored. The role of animals in social behaviors (i.e., mortuary practices, feasting) has not yet been thoroughly …
Assessing The Reproducibility Of Coral Oxygen And Carbon Isotope Time Series From Fiji And Tonga And Their Application To The Reconstruction Of South Pacific Convergence Zone Movements Since The Mid-1800s, Emilie Pauline Dassie
Assessing The Reproducibility Of Coral Oxygen And Carbon Isotope Time Series From Fiji And Tonga And Their Application To The Reconstruction Of South Pacific Convergence Zone Movements Since The Mid-1800s, Emilie Pauline Dassie
Legacy Theses & Dissertations (2009 - 2024)
A major feature affecting the hydrology of the southern hemisphere is the South Pacific Convergence Zone (SPCZ); a band of high rainfall extending southeastward from the Western Pacific Warm Pool (WPWP). It is a key source of atmospheric water vapor and latent heating. While it is clear that the SPCZ plays a fundamental role in Earth's climate, little is known about the patterns and mechanisms responsible for interannual to century-scale changes in its position and how it may respond to global climate change.
Assessing Delta Oxygen-18 In The Coral Genus Isopora For Reconstructing Indo-Pacific Regional And Seasonal Climate, Gavin Lemley
Assessing Delta Oxygen-18 In The Coral Genus Isopora For Reconstructing Indo-Pacific Regional And Seasonal Climate, Gavin Lemley
Legacy Theses & Dissertations (2009 - 2024)
Paleoclimate reconstructions often utilize coral reefs with very long time spans such as the genus Porites and Diploastrea, because of their potential to provide centuries of continuous climate records via geochemical signatures. Smaller corals, such as the genus Isopora, have been essentially unexplored as climate archives because their small skeletons (<1 m) and short lifespans (years to decades) do not provide such continuous geochemical records. There has not been a practical application for such corals until recently. In early 2010, the Integrated Ocean Drilling Program Leg 325 (IODP-325) cored drowned fossil reefs off the Great Barrier Reef (GBR) with the objectives of reconstructing sea level and surface ocean conditions since the Last Glacial Maximum. Out of 213 massive fossil corals that were recovered, most were massive Isoporan colonies. A 30-specimen subset of these fossils range in age from ~32,000 to ~11,500 years before present with even temporal spacing, based on preliminary U/Th dating of core catcher samples. This age distribution is excellent for meeting IODP-325 objectives, but the suitability of Isopora for paleoclimate analyses remains unknown.
Geochemical Fingerprinting Of Volcanic Airfall Deposits : A Tool In Stratigraphic Correlation, Soumava Adhya
Geochemical Fingerprinting Of Volcanic Airfall Deposits : A Tool In Stratigraphic Correlation, Soumava Adhya
Legacy Theses & Dissertations (2009 - 2024)
Chemical fingerprints of volcanic airfall deposits obtained from high-precision electron microprobe analysis of glass and phenocrysts phases provide geochemical correlations with temporal precision unattainable by other methods. In this research electron microprobe analysis (EMA) techniques, to fingerprint chemically and correlate fresh and altered volcanic airfall deposits, have been utilized to test the value of this tool for future research on stratigraphic correlation. The following samples were chosen from within a variety of sedimentary rocks widely separated spatially and temporally: