Experimental studies and model analysis of noble gas fractionation in low-permeability porous media

Autor: William C. Evans, Sergi Molins, Timothy J. Kneafsey, B. Mack Kennedy, Xin Ding

Publikováno v: Ding, X; Mack Kennedy, B; Molins, S; Kneafsey, T; & Evans, WC. (2017). Experimental studies and model analysis of noble gas fractionation in low-permeability porous media. Geochimica et Cosmochimica Acta, 205, 149-167. doi: 10.1016/j.gca.2017.02.005. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/96m7c00b

© 2017 The Author(s) Gas flow through the vadose zone from sources at depth involves fractionation effects that can obscure the nature of transport and even the identity of the source. Transport processes are particularly complex in low permeability

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Mantle fluids in the Karakoram fault: Helium isotope evidence

Autor: Yizhaq Makovsky, T. Harinarayana, B. Mack Kennedy, Mary L. Leech, Simon L. Klemperer, Siva R. Sastry

Publikováno v: Earth and Planetary Science Letters. 366:59-70

The Karakoram fault (KKF) is the 1000 km-long strike-slip fault separating the western Himalaya from the Tibetan Plateau. From geologic and geodetic data, the KKF is argued either to be a lithospheric-scale fault with hundreds of km of offset at seve

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https://doi.org/10.1016/j.epsl.2013.01.013

Tracing and quantifying magmatic carbon discharge in cold groundwaters: lessons learned from Mammoth Mountain, USA

Autor: B. Mack Kennedy, Andrea C Cook, David L. Shuster, William C. Evans, L.D. White, Michael L. Sorey, Elizabeth M. Colvard, Mark A. Huebner

Publikováno v: Journal of Volcanology and Geothermal Research. 114:291-312

A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was ≥1.8×10 7 m 3 /yr drain

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https://doi.org/10.1016/s0377-0273(01)00268-2

Helium isotopes in lithospheric mantle: evidence from tertiary basalts of the western USA

Autor: Allen Dodson, Donald J. DePaolo, B. Mack Kennedy

Publikováno v: Geochimica et Cosmochimica Acta. 62:3775-3787

The isotopic compositions of He, Sr, and Nd were measured in Tertiary-age basalts from the Basin and Range province of the western USA to evaluate models for the He isotopic character of subcontinental mantle lithosphere (SCML) and assess the role of

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https://doi.org/10.1016/s0016-7037(98)00267-1

The Northwest Geysers high-temperature reservoir: evidence for active magmatic degassing and implications for the origin of the Geysers geothermal field

Autor: B. Mack Kennedy, Alfred Truesdell

Publikováno v: Geothermics. 25:365-387

Noble gas isotope abundances in steam from the Coldwater Creek field of the Northwest Geysers, California, show mixing between a nearly pure mid-ocean ridge (MOR) type magmatic gas with high 3He/4He and low radiogenic 40∗Ar (R/Ra > 8.3 and 40∗Ar/

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https://doi.org/10.1016/0375-6505(96)00005-3