Development and Application of 40Ar/39Ar Laser-fusion Dating and 40Ar/39Ar Step-heating Dating of Quaternary Basaltic Volcanic Rocks PDF Download
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Author: Brent David Turrin
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 340
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Author: Brent David Turrin
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 340
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Book Description
Author: F. Jourdan
Publisher: Geological Society of London
ISBN: 1862393605
Category : Science
Languages : en
Pages : 378
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Book Description
Decoding the complete history of Earth and our solar system requires the placing of the scattered pages of Earth history in a precise chronological order, and the 40Ar/39Ar dating technique is one of the most trusted dating techniques to do that. The 40Ar/39Ar method has been in use for more than 40 years, and has constantly evolved since then. The steady improvement of the technique is largely due to a better understanding of the K/Ar system, an appreciation of the subtleties of geological material and a continuous refinement of the analytical tools used for isotope extraction and counting. The 40Ar/39Ar method is also one of the most versatile techniques with countless applications in archaeology, tectonics, structural geology, orogenic processes and provenance studies, ore and petroleum genesis, volcanology, weathering processes and climate, and planetary geology. This volume is the first of its kind and covers methodological developments, modelling, data handling, and direct applications of the 40Ar/39Ar technique.
Author: Ian McDougall
Publisher: Oxford University Press, USA
ISBN: 9780195109207
Category : Science
Languages : en
Pages : 290
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Book Description
Argon isotopic dating is one of the most important techniques for estimating the ages of rocks and can be used on very small samples. It has been used to assign reliable ages to the Earth and numerous meteorites. This second edition covers the standard principles and methods and incorporates many of new developments from the last decade. It covers the basis of the method, technical aspects, data presentation, diffusion theory, thermochronology, and many applications and case studies.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 860
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Author: Michael J. Kunk
Publisher:
ISBN:
Category : Argon-argon dating
Languages : en
Pages :
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Author: Mike Walker
Publisher: John Wiley & Sons
ISBN: 1118700090
Category : Science
Languages : en
Pages : 311
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Book Description
This introductory textbook introduces the basics of dating, the range of techniques available and the strengths and limitations of each of the principal methods. Coverage includes: the concept of time in Quaternary Science and related fields the history of dating from lithostratigraphy and biostratigraphy the development and application of radiometric methods different methods in dating: radiometric dating, incremental dating, relative dating and age equivalence Presented in a clear and straightforward manner with the minimum of technical detail, this text is a great introduction for both students and practitioners in the Earth, Environmental and Archaeological Sciences. Praise from the reviews: "This book is a must for any Quaternary scientist." SOUTH AFRICAN GEOGRAPHICAL JOURNAL, September 2006 “...very well organized, clearly and straightforwardly written and provides a good overview on the wide field of Quaternary dating methods...” JOURNAL OF QUATERNARY SCIENCE, January 2007
Author:
Publisher:
ISBN:
Category : Argon
Languages : en
Pages : 68
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Author: Walter Campbell Munly
Publisher:
ISBN:
Category : Argon-argon dating
Languages : en
Pages : 634
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"In this thesis I develop a new 40Ar/39Ar dating technique for measuring ages and estimating cooling histories of potassium-bearing minerals within shales and clays. To overcome problems of argon recoil, small shale or clay flakes (possessing diameters less than 2 mm) were encapsulated within micro ampoules under vacuum. Encapsulation ensures that argon that recoils from tiny crystals during irradiation in a nuclear reactor cannot escape and will therefore be detected during 40Ar/39Ar laser step-heating. The step heating method is effective in differentiating between, and dating neoformed and detrital illite components. My use of this method has revealed a significant age difference across the Toyuk thrust, Brooks Range, northern Alaska. Devonian shales from south of the thrust yield relatively flat age spectra indicative of a younger illitic component, and argon retention ages around 225 Ma. Shale samples from north of the thrust yield staircase age spectra indicative of a detrital illite component, and older retention ages (233-391 Ma). Modeling of these spectra across the Toyuk also suggests that argon loss and subsequent cooling occurred at about 140 Ma. Retention ages across the Toyuk thrust may reflect differences in depths of tectonic burial, or differing ages of crystallization of neoformed illite during initial deposition and burial. 40Ar/39Ar age spectra from the Colville basin, North Slope, Alaska, illites are generally dominated by detrital illite, yielding high temperature step-heat ages up to 475 Ma. Illite crystallization ages from the NPRA (National Petroleum Reserve in Alaska) range between 205 and 225 Ma. These ages are older than depositional ages and therefore suggest that this illite was transported from outside the Colville basin, perhaps from the Brooks Range. The Colville basin samples also reveal argon loss at -45 Ma. Paleocene samples from the Exxon Alaska State A-1 well yield illite crystallization ages of about 205 Ma, and argon loss ages around 40 Ma. X -ray diffraction of the Colville basin samples indicates the presence of multiple clay phases, including detrital and neoformed illite. This complex mineralogy precluded estimating when the host shales were within the oil generation window"--Leaves iii-iv.
Author: William Alexander Deer
Publisher: Geological Society of London
ISBN: 9781862390812
Category : Nature
Languages : en
Pages : 986
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Book Description
Originally published in 1963, this text provides a major revision of the first edition. It is devoted to the feldspar minerals, incorporating the advances in knowledge and understanding arising from the new and improved techniques for the study of minerals that have developed over the decades between editions. The authors have set out to maintain the general approach used in the other volumes, summarizing important research results and presenting them in an organized fashion.
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 872
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