H103
The Bottom of the Hydrologic Cycle

Session ID#: 161521

Session Description:
Groundwater is the largest terrestrial store of water, liquid or otherwise. The bulk of this water is saline, has extremely long residence times and is weakly connected to the rest of the hydrologic cycle. However, these slow-moving fluids contain a significant portion of the Earth's biomass and are of critical importance for some geochemical cycles. The interface between these deep groundwaters and more active shallow waters and how it has shifted over geologic time is of critical importance to understanding the role of the deep subsurface in the broader Earth system. This session will explore recent breakthroughs in our understanding of deep groundwater systems and associated geochemical cycles and microbial life.
Index Terms:

0448 Geomicrobiology [BIOGEOSCIENCES]
1829 Groundwater hydrology [HYDROLOGY]

Primary Convener:  Grant A G Ferguson, University of Saskatchewan, Department of Civil, Geological and Environmental Engineering, Saskatoon, SK, Canada
Convener:  Jennifer C McIntosh, University of Arizona, Hydrology and Atmospheric Sciences, Tucson, AZ, United States
Student/Early Career Convener:  Ji-Hyun Kim, University of Arizona, Hydrology and Atmospheric Sciences, Tucson, AZ, United States
 
Clumped and conventional isotopes of natural gas reveal basin burial, denudation, flushing, and biodegradation history (1051952)
Ji-Hyun Kim, University of Calgary, Department of Geoscience, Calgary, AB, Canada, Anna M Martini, Amherst College, Department of Geology and Environmental Studies, Amherst, United States, Shuhei Ono, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, United States, Ellen Lalk, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, United States, Grant A G Ferguson, University of Saskatchewan, Department of Civil, Geological and Environmental Engineering, Saskatoon, SK, Canada and Mcintosh, Jennifer C, University of Arizona, Hydrology and Atmospheric Sciences, Tucson, United States
 
Detection of ancient biosignatures along deep groundwater flow paths (Invited) (1079029)
Henrik Drake, Linnaeus University, Kalmar, Sweden
 
Groundwater chemistry characterization to conceptualize the aquifer in granitic urban area of Korea (1102345)
Hye Na Ko1, Jaeyeon Kim2, Dugin Kaown1 and Kang Kun Lee1, (1)Seoul National University, School of Earth and Environmental Science, Seoul, South Korea, (2)Seoul National University, School of Earth and Environmental Science, Seoul, Korea, Republic of (South)
 
Fossil groundwater prevalence and access analyzed via the new US Aquifer Database (1125827)
Merhawi GebreEgziabher GebreMichael1, Scott Jasechko1 and Debra Perrone2, (1)University of California Santa Barbara, Santa Barbara, United States, (2)University of California Santa Barbara, Environmental Studies Program, Santa Barbara, United States
 
Artesian Conditions Disappear Over the Last Century in the United States (1129528)
Annette Elizabeth Hilton, University of California Santa Barbara, Santa Barbara, CA, United States and Scott Jasechko, University of California Santa Barbara, Santa Barbara, United States
 
Land-to-sea Fresh Groundwater Flow in Deep Aquifers and the Importance of Offshore Faults in Controlling the Extent of Circulation. (1134634)
Anner Paldor1, Benjamin Penny2, Holly A Michael3 and Claudia Bertoni2, (1)University of Delaware, Earth Sciences, Newark, DE, United States, (2)University of Oxford, Oxford, United Kingdom, (3)University of Delaware, Earth Sciences, Newark, United States
 
Toward an Understanding of the Origin and Evolution of Appalachian Deep Critical Zone Fluids from Application of Radiogenic and Stable Metal Isotopes (1182868)
Brian W. Stewart, University of Pittsburgh, Department of Geology & Environmental Science, Pittsburgh, PA, United States and Rosemary C. Capo, University of Pittsburgh, Department of Geology & Environmental Science, Pittsburgh, United States
 
Noble gas tracers as proxy to deep subsurface energy production and residence times (Invited) (1202121)
Rūta Karolytė1, Oliver Warr2, Barbara Sherwood Lollar2 and Chris J Ballentine3, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)University of Toronto, Department of Earth Sciences, Toronto, ON, Canada, (3)University of Oxford, Earth Sciences, Oxford, United Kingdom
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