Paper 4-5: Tracing of Pollution Sources in Urban Dust and Soils from Hermosillo City (Northwestern Mexico) Using Pb Isotopes. Rafael Del Ro Salas of Estacin Regional del Noroeste, UNAM, and nine colleagues: http://gsa.confex.com/gsa/2012CD/finalprogram/abstract_201797.htm.
What Fossil Ages and Distributions Tell Us about the History of the Ancient Gulf of California. Judith Smith, U.S. National Museum of Natural History, and colleagues Ana Luisa Carreo and Javier Helenes, presiding. This session aims to take a fresh look at data based on coral, echinoid, mollusk, microfossil, other invertebrate and vertebrate specimens, not published lists, in order to discover new insights on the age of the earliest seawater.
Abstracts: http://gsa.confex.com/gsa/2012CD/finalprogram/session_30102.htm, 2:30 to 4:50 p.m. (session 15).
Paper 15-1: Keynote: Neogene Micropaleontology and Evolution of the Northern Gulf of California. Javier Helenes, Centro de Investigacin Cientfica y de Educacin Superior de Ensenada and A. Luisa Carreo, UNAM: http://gsa.confex.com/gsa/2012CD/finalprogram/abstract_201564.htm.
Friday, 30 March
Ground Deformation Related to Anthropogenic Activities: Achievements in the Development of Geoscience Information System for Improved Management of Natural Resources. Dora Carreon-Freyre, UNAM, and colleagues Mariano Cerca, Devin Galloway, and Penlope Lpez-Quiroz, presiding. Deformation of the near surface and deep geological sequences can be associated with natural and anthropogenic phenomena. The intensive exploitation of subsurface natural resources and the urbanization of areas nearby steep slopes cause mechanical instabilities that are shown in the surface as lan
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Geological Society of America