Stable Isotope Geochemistry


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Anastasia G Yanchilina <[log in to unmask]>
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Stable Isotope Geochemistry <[log in to unmask]>
Thu, 9 Jan 2020 01:44:59 -0500
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Dear all,

My co-conveners and I would like to suggest abstract submissions to our session 14g at this year's Goldschmidt conference on weathering, "Weathering: Long-Term Terrestrial Climate Change, Modern Quantification, and Implications for Extraterrestrial Environments." 

The description is below:

"The process that alters and breaks down rocks near Earth’s surface by physical, chemical, and/or biological means is known as weathering. Weathering is of critical importance because it is an interconnected process that regulates elemental cycling and mass transfer near the Earth’s surface with implications for carbon cycling. Thus, the chemistry of Earth’s ocean-atmosphere system, as well as climate stability, depends on weathering. Additionally, weathering is an important contributor to the formation of modern terrestrial soil and marine sediments, and therefore has important implications for the cycling of elements, alteration of minerals, and climate in both terrestrial and extraterrestrial environments We seek contributions from three main areas: (1) Quantification and understanding of modern weathering regimes, with connections to terrestrial soil and marine sediment formation, the impact of local lithology (e.g., basaltic volcanic arcs vs. siliciclastic river deltas) on weathering rates and chemistry, and changes as a result of anthropogenic activities. (2) Connections between silicate weathering, reverse weathering, and climate change on various timescales, e.g., glacial-interglacial cycles of the late Pleistocene, long-term changes over the Cenozoic, or early Earth/Archean, and how these changes are being constrained from geologic records (i.e., isotopic tracers of weathering). (3) Understanding weathering, fluid/rock interaction, and/or soil formation regimes in extraterrestrial environments (e.g. Mars and Titan), and how these processes may be related to climate and hydrology, habitability, and respective evolution through time."

Our goals are to combine all types of research relating to weathering to tie together both modern terrestrial processes and those from other times and other environments. 

Warm regards and happy New Year, everyone!