Proceedings of the Twentieth Lunar and Planetary Science Conference


Book Description

Topics discussed include the petrology and geochemistry of the moon, the geology of the moon, lunar regolith processes and resources, the petrology and geochemistry of achondrites, comets and interplanetary dust, shock and terrestrial cratering, the geology of Mars, and the geology of Venus.



















Lunar Domes


Book Description

Lunar domes are structures of volcanic origin which are usually difficult to observe due to their low heights. The Lunar Domes Handbook is a reference work on these elusive features. It provides a collection of images for a large number of lunar domes, including telescopic images acquired with advanced but still moderately intricate amateur equipment as well as recent orbital spacecraft images. Different methods for determining the morphometric properties of lunar domes (diameter, height, flank slope, edifice volume) from image data or orbital topographic data are discussed. Additionally, multispectral and hyperspectral image data are examined, providing insights into the composition of the dome material. Several classification schemes for lunar domes are described, including an approach based on the determined morphometric quantities and spectral analyses. Furthermore, the book provides a description of geophysical models of lunar domes, which yield information about the properties of the lava from which they formed and the depth of the magma source regions below the lunar surface.




Volcano Instability on the Earth and Other Planets


Book Description

A study which reveals active volcanoes to be dynamically evolving structures, the growth and development of which are punctuated by episodes of instability and subsequent structural failure. Edifice failure and consequent debris avalanche formation appears to occur, on average, at least four times a century, and similar behaviour is known to have occured at volcanoes on Mars and Venus. The book claims that hazard-mitigation strategies must now address the possibility of future collapse events which may be ten-times greater than that at Mount St Helens in 1980.







Comparison of the Cretaceous-Tertiary Boundary Impact Events and the 0.77-Ma Australasian Tektite Event


Book Description

Reinterpretation of iridium anomalies, shocked quartz, and microtektites attributed to cratering events in Cretaceous-Tertiary boundary sections. Evidence from the Ries crater of Germany and Australasian tektites is essential to understanding giant craters and mass extinction.