80 Mineral Evolution: The Coevolution of the Geo- and Biospheres
Monday, 1 November 2010
8:00 AM - 12:00 PM
Room 502
MINERAL EVOLUTION: DRIVING FORCES AND PROSPECTS FOR FUTURE RESEARCH
Paper number: 80-1
Program: Technical Sessions
Time: 8:00 AM – 8:25 AM
Authors
Abstract
The history of first appearances of minerals on Earth remains largely uncharted in detail. Progress will be impeded by the uncertain interpretation of the ages of many mineral species that have a single or only a few occurrences. Mineral evolution has a brighter future in research if the concept is expanded to consider the evolution of mineral compositions (elemental and isotopic), mineral associations, and mineral abundances. Without invoking the term mineral evolution, recent studies, for example, have already made groundbreaking discoveries about Earth history by tracking secular changes in the sulfur isotope composition of sulfides and sulfates, the oxygen isotope composition and Th/U of zircon, and the distribution of aragonite and calcite in marine sediments. The banner of mineral evolution can help lead to further important discoveries by focusing attention on the change of all aspects of mineralogy throughout geologic time.