GLOBAL DIVERSITY OF THE LUNAR CRUST: SCIENCE AND CHALLENGES OF LUNAR SAMPLE RETURN. K. H. Joy, J. Gross, T. Arai, S. A. Russell School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK, The American Museum of Natural History, Dept. of Earth and Planetary Sciences, New York, NY 10024, USA, Planetary Exploration Research Centre, Chiba...

Detecting the antineutrinos emitted by the decay of radioactive elements in the mantle and crust could provide a direct measurement of the total abundance of uranium and thorium in the Earth. In calculating the antineutrino flux at specific sites, the local geology of the crust and the background from the world’s nuclear power reactors are important considerations. Employing a global crustal ma...

The average chemical compositions of the continental crust and the oceanic crust (represented by MORB), normalized to primitive mantle values and plotted as functions of the apparent bulk partition coefficient of each element, form surprisingly simple, complementary concentration patterns. In the continental crust, the maximum concentrations are on the order of 50 to 100 times the primitive-man...

a Laboratory of Seismology and Physics of Earth’s Interior, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China b Mengcheng National Geophysical Observatory, Anhui, China c CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026,...

Coastal hydrothermal field was hot spot for biotic diversity on the Paleoarchean Earth KENICHIRO SUGITANI , KOICHI MIMURA, MAKOTO TAKEUCHI, TAKAO YAMAGUCHI, KATSUHIKO SUZUKI, RYOKO SENDA, YOSHIHIRO ASAHARA, SIMON WALLIS, MARTIN J. VAN KRANENDONK 5, 6 Nagoya University: [email protected] Australian Centre for Astrobiology at UNSW The University of Tokyo Japan Agency for Marine-Earth ...

Introduction: Impact cratering is a fundamental geologic process involved in the original accretion and subsequent evolution of planetary bodies throughout the Solar System. Impacts have the ability to add or remove material from their target body and, therefore, affect their target’s geochemical make-up. Geochemical studies have shown that Earth, relative to chondritic and/or solar abundances,...

The evolution and the growth of the continental crust is inextricably linked to the evolution of Earth's geodynamic processes. The detrital zircon record within the continental crust, as well as the isotopic composition of this crust, indicates that the amount of juvenile felsic material decreased with time and that in geologically recent times, the generation of new crust is balanced by recycl...