Download or read book Large Meteorite Impacts and Planetary Evolution written by B. O. Dressier and published by Geological Society of America. This book was released on 1994-01-01 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises 28 papers which grew out of the International Conference on Large Meteorite Impacts and Planetary Evolution, August/September, 1992 in Sudbury, Ontario. The interdisciplinary papers, encompassing diverse studies from trace element geochemistry to planetary exploration, are arranged into f

Download or read book Vapor Pressure and Vapor Fractionation of Tektite Melts written by Louis S. Walter and published by . This book was released on 1964 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tektites in the Geological Record written by Gerald Joseph Home McCall and published by Geological Society of London. This book was released on 2001 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text commences with the history of tektites, from mediaeval China, through finds in Czechoslovakia in the 18th century and Darwin's description while on the Beagle, to 20th-century finds in South East Asia, the Ivory Coast and the USA. The four major strewn fields are described, followed by their extension by deep sea finds of microtektites and the recognition of irregular, large layered tektites in SE Asia.

Download or read book The Lunar Origin of Tektites written by Dean R. Chapman and published by . This book was released on 1963 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerodynamic Evidence Pertaining to the Entry of Tektites Into the Earth s Atmosphere written by Dean R. Chapman and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On the Unity and Origin of the Australasian Tektites written by Dean R. Chapman and published by . This book was released on 1963 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerodynamic Analysis of Tektites and Their Parent Bodies written by E. W. Adams and published by . This book was released on 1962 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiment and analysis indicate that the button-type australites were derived from glassy spheres which entered or re-entered the atmosphere as cold solid bodies; in case of average-size specimens, the entry direction was nearly horizontal and the entry speed between 6.5 and 11.2 km/sec. Terrestrial origin of such spheres is impossible because of extremely high deceleration rates at low altitudes. The limited extension of the strewn fields rules out extraterrestrial origin of clusters of such spheres because of stability considerations for clusters in space. However, tektites may have been released as liquid droplets from glassy parent bodies ablating in the atmosphere of the earth. The australites then have skipped together with the parent body in order to re-enter as cold spheres. Terrestrial origin of a parent body would require an extremely violent natural event. Ablation analysis shows that fusion of opaque siliceous stone into glass by aerodynamic heating is impossible.

Download or read book The Meteorite Tektite Collector s Handbook written by Philip M. Bagnall and published by Richmond, Va. : Willmann-Bell. This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Origin of Tektites written by John Aloysius O'Keefe and published by . This book was released on 1960 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microtektites and the Origin of the Australasian Tektite Strewn Field written by Billy P. Glass and published by . This book was released on 1968 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lunar Structures as Deduced from Muong Nong Tektites written by John Aloysius O'Keefe and published by . This book was released on 1966 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 40Ar 39Ar Age Spectra and Total fusion Ages of Tektites from Cretaceous Tertiary Boundary Sedimentary Rocks in the Beloc Formation Haiti written by G. Brent Dalrymple and published by . This book was released on 1993 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potassium Argon Dating written by O. A. Schaeffer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perhaps no dating method has the wide range of applicability as does the potassium argon dating method from either consideration of the ranges of ages which can be dated or the availability of suitable material to date. Minerals as young as tens of thousands of years to minerals billions of years old have been successfully dated. Many minerals retain for times of the order of billions of years the daughter, Ar40, and many minerals contain as a component K40 the parent element, potassium being a common element in the earth's crust. As a result, most rock contains at least one mineral which can be successfully dated by the potassium argon method. Even though this method has been applied for over fifteen years, there is as yet no work which summarizes the experimental techniques and the results available. The sixtieth birthday ofW. GENTNER, one of the pioneers in this field of research, is a suitable time to present such a summary.

Download or read book NASA Technical Translation written by and published by . This book was released on 1959 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison of Tektite Specimens from Empire Georgia and Martha s Vineyard Massachusetts written by Roy S. Clarke and published by . This book was released on 1961 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lunar Science A Post Apollo View written by Stuart Ross Taylor and published by Elsevier. This book was released on 2016-06-06 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lunar Science: A Post-Apollo View: Scientific Results and Insights from the Lunar Samples explains the scientific results and discoveries of the manned Apollo lunar missions as they are understood. The emphasis is less on sample description and data and more on the interpretative aspects of the study, with the aim of providing a coherent story of the evolution of the moon and its origin as revealed by the lunar samples and the Apollo missions. This text has seven chapters; the first of which provides a historical background of efforts to study the moon prior to the Apollo missions, including lunar photogeologic mapping and direct exploration by spacecraft. Attention then turns to the Apollo missions and the lunar samples collected, beginning with Apollo 11 that landed on the moon on July 20, 1969 and followed by more missions. The next chapter describes the geology of the moon, with emphasis on craters, central peaks and peak rings, the large ringed basins, rilles, and maria lava flows. The reader is also introduced to the nature of the lunar surface material, the maria basalts, the highlands, and the moon’s interior. This book concludes with a discussion on the evidence that has been gathered by the Apollo missions that offers insights into the origin and evolution of the moon. An epilogue reflects on the usefulness of manned space flight. This book will appeal to lunar scientists as well as to those with an interest in astronomy and space exploration.

Download or read book Gemstones written by Robin Hansen and published by Princeton University Press. This book was released on 2022-04-12 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published: London: Natural History Museum, 2022, as: The Natural History Museum book of gemstones: a concise reference guide.