Relevant bibliographies by topics / Th dating

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  1. Dissertations / Theses

Academic literature on the topic 'Th dating'

Author: Grafiati
Published: 1 April 2023

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Dissertations / Theses on the topic "Th dating"

1

Loehn, Clayton William. "Investigation of the monazite chemical dating technique." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/27688.

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In order to evaluate the electron microprobe (EMP) method for chemical dating of monazite, we chemically analyzed selected suites of monazite grains that were previously dated by standard U/Pb isotopic methods at three laboratories each equipped with a sensitive high resolution ion microprobe (SHRIMP). Representing diverse igneous and metamorphic lithologies, these grains yielded conventional isotopic ages ranging in age from Neoarchean to Devonian. Chemical dating was performed at Virginia Tech using a Cameca SX-50 EMP in which the analytical routines and settings were specifically optimized
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2

Simons, Suzanne Lee. "U-Th-Pb systematics of opaline silica: Implications for the dating of surface processes." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/36.

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U–Pb and U-series analyses of U-rich, relative to both Th and Pb, opal samples using sensitive high-resolution ion microprobe (SHRIMP) demonstrate the ability of this technique for dating opals with ages ranging from several tens of thousands of years to millions of years and from a variety of deposition environments. This experimental study increases the understanding of opal as a geochronometer and explores the stability of U-Th-Pb systematics in opaline silica.
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3

Placzek, Christa. "Stratigraphy, Geochronology and Geochemistry of Paleolakes on the Southern Bolivian Altiplano." Diss., The University of Arizona, 2005. http://hdl.handle.net/10150/194352.

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Precise chronologies of climate events in the tropics are rare yet essential for understanding how tropical climate relates to global climate at millennial to longer time scales. An increasingly important area for understanding these interactions is the southern Bolivian Altiplano (15-22oS) which represents the waning and southeastern end of the South American Monsoon, a system that is, today, modulated by regional upper-air circulation anomalies under the influence of tropical Pacific sea-surface temperature gradients associated with El Niño/Southern Oscillation (ENSO). Mechanisms of summ
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4

Guenthner, William Rexford. "Zircon (U-Th)/He Dates from Radiation Damaged Crystals: A New Damage-He Diffusivity Model for the Zircon (U-Th)/He Thermochronometer." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/306783.

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Zircon (U-Th)/He (zircon He) dating has become a widely used thermochronologic method in the geosciences. Practitioners have traditionally interpreted (U-Th)/He dates from zircons across a broad spectrum of chemical compositions with a single set of ⁴He diffusion kinetics derived from only a handful of crystals (Reiners et al., 2004). However, it has become increasingly clear that a "one-size-fits-all" approach to these kinetics is inadequate, leading to erroneous conclusions and incongruent data. This dissertation develops a more grain-specific approach by showing the fundamental role that in
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5

Burnside, Neil Murray. "U-Th dating of travertines on the Colorado Plateau : implications for the leakage of geologically stored CO2." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1988/.

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In order to avoid the damaging climatic consequences of rising atmospheric CO2, and reduce current atmospheric CO2 concentrations to pre-industrial levels, anthropogenic CO2 emissions must be mitigated by capturing CO2 at power plants and storing it for thousands of years. Underground storage within deep geological formations, such as depleted gas and oil fields or deep saline aquifers, is the best understood solution for storage of CO2. In order for this method to gain more public and political acceptance it is important to characterise the potential causes, quantities and rates of CO2 releas
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6

Dean, J. R. "Stable isotope analysis and U-Th dating of late glacial and Holocene lacustrine sediments from central Turkey." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14090/.

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Water is a politically sensitive resource in the Near East and water stress is increasing. It is therefore vital that there is a strong understanding of past hydrological variability, so that the drivers of change can be better understood, and so that the links between the palaeoclimate and archaeological records in this key region in the development of human civilisation can be investigated. To be of most use, this requires high resolution records and a good understanding of palaeoseasonality. A sediment sequence spanning ~14,000 years has been retrieved from Nar Gölü, a lake in central Turke
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7

Yamada, Kunimi. "Thermochronology using (U-Th)/He dating method : investigation for effects of secular disequilibrium on (U-Th)/He ages and uplift history of the Tanzawa mountains in the south Fossa Magna region." 京都大学 (Kyoto University), 2006. http://hdl.handle.net/2433/144205.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(理学)<br>甲第12122号<br>理博第3016号<br>新制||理||1450(附属図書館)<br>23958<br>UT51-2006-J117<br>京都大学大学院理学研究科地球惑星科学専攻<br>(主査)助教授 田上 高広, 教授 嶋本 利彦, 教授 小畑 正明<br>学位規則第4条第1項該当
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8

Xia, Qikai. "High precision TIMS U-Th disequilibrium dating and C, O, Sr isotope-based multi-proxy palaeoclimatic study of Speleothems in Australia /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18421.pdf.

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9

Adams, Byron A. "Exhumation and incision history of the Lahul Himalaya, northern India, based on (U-Th)/He thermochronometry and terrestrial cosmogenic nuclide dating techniques." Cincinnati, Ohio : University of Cincinnati, 2007. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1180546920.

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Thesis (M.S.)--University of Cincinnati, 2007.<br>Title from electronic thesis title page (viewed Oct. 8, 2007). Includes abstract. Keywords: Lahul, Himalaya, exhumation, incision, thermochronometry, terrestrial cosmogenic nuclides, strath terraces. Includes bibliographical references.
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10

Brown, Summer Jasmine. "Integrating apatite (U-Th)/He and fission track dating for a comprehensive thermochronological analysis: refining the uplift history of the Teton Range." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/32718.

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Uplift of the Teton Range is primarily controlled by displacement across the range-front Teton normal fault. The Tetons comprise the footwall block while the hanging wall encompasses Jackson Hole valley and a portion of the Snake River. Relative to the rest of the Rocky Mountains, the Tetons experienced the majority of uplift very recently, substantiating the need for a detailed investigation integrating structural analysis and bedrock thermochronometry. New low-temperature cooling ages are documented in three vertical transects across the Teton Range and at low elevations parallel to the T
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