Zobrazeno 1 - 10
of 1 906
pro vyhledávání: '"DePaolo DJ"'
Temporal covariation of island arc Sr isotopes and seawater chemistry over the past 2 billion years.
Autor:
Bednarick AL; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125., Bucholz CE; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125., DePaolo DJ; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720.; Energy Geosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720., Stolper DA; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720.; Energy Geosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720.
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2024 Oct 22; Vol. 121 (43), pp. e2401832121. Date of Electronic Publication: 2024 Oct 15.
Authigenic carbonate formation rates in marine sediments and implications for the marine δ13C record
Publikováno v:
Mitnick, EH; Lammers, LN; Zhang, S; Zaretskiy, Y; & DePaolo, DJ. (2018). Authigenic carbonate formation rates in marine sediments and implications for the marine δ13C record. Earth and Planetary Science Letters, 495, 135-145. doi: 10.1016/j.epsl.2018.05.018. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/4628m8gm
© 2018 Elsevier B.V. Carbon isotope (δ13C) variations measured in carbonates have been attributed to large-scale phenomena throughout Earth history, such as changes in atmospheric oxygen or global glaciations. These interpretations follow from a mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______325::fec800dab29451229fbd2db432a3d5f2
http://www.escholarship.org/uc/item/4628m8gm
http://www.escholarship.org/uc/item/4628m8gm
At equilibrium, the D/H isotope fractionation factor between H2 and H2O (αH2O-H2(eq)) is a sensitive indicator of temperature, and has been used as a geothermometer for natural springs and gas discharges. However, δDH2 measured in spring waters may
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::aa5580d772110603674043e8cc4f6fbd
https://escholarship.org/uc/item/9wh4m06t
https://escholarship.org/uc/item/9wh4m06t
Autor:
Lau, KV, Maher, K, Brown, ST, Jost, AB, Altıner, D, DePaolo, DJ, Eisenhauer, A, Kelley, BM, Lehrmann, DJ, Paytan, A, Yu, M, Silva-Tamayo, JC, Payne, JL
Publikováno v:
Lau, KV; Maher, K; Brown, ST; Jost, AB; Altıner, D; DePaolo, DJ; et al.(2017). The influence of seawater carbonate chemistry, mineralogy, and diagenesis on calcium isotope variations in Lower-Middle Triassic carbonate rocks. Chemical Geology, 471, 13-37. doi: 10.1016/j.chemgeo.2017.09.006. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/6v0262wf
© 2017 Elsevier B.V. The geological calcium cycle is linked to the geological carbon cycle through the weathering and burial of carbonate rocks. As a result, calcium (Ca) isotope ratios (44Ca/40Ca, expressed as δ44/40Ca) can help to constrain ancie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0d7d9c13f743da56b9ca17f7e1b00e10
http://www.escholarship.org/uc/item/6v0262wf
http://www.escholarship.org/uc/item/6v0262wf
Publikováno v:
Geochemistry Geophysics Geosystems, vol 18, iss 1
Geochemistry, Geophysics, Geosystems, vol 18, iss 1
Jost, AB; Bachan, A; van de Schootbrugge, B; Brown, ST; DePaolo, DJ; & Payne, JL. (2017). Additive effects of acidification and mineralogy on calcium isotopes in Triassic/Jurassic boundary limestones. Geochemistry, Geophysics, Geosystems, 18(1), 113-124. doi: 10.1002/2016GC006724. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/4916s0cf
Geochemistry, Geophysics, Geosystems, vol 18, iss 1
Jost, AB; Bachan, A; van de Schootbrugge, B; Brown, ST; DePaolo, DJ; & Payne, JL. (2017). Additive effects of acidification and mineralogy on calcium isotopes in Triassic/Jurassic boundary limestones. Geochemistry, Geophysics, Geosystems, 18(1), 113-124. doi: 10.1002/2016GC006724. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/4916s0cf
© 2016. American Geophysical Union. All Rights Reserved. The end-Triassic mass extinction coincided with a negative δ13C excursion, consistent with release of13C-depleted CO2from the Central Atlantic Magmatic Province. However, the amount of carbon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::aea81acd8b8581f712fa97fc70c3670a
https://escholarship.org/uc/item/4916s0cf
https://escholarship.org/uc/item/4916s0cf
Publikováno v:
Wan, J; Tokunaga, TK; Ashby, PD; Kim, Y; Voltolini, M; Gilbert, B; et al.(2018). Supercritical CO2uptake by nonswelling phyllosilicates. Proceedings of the National Academy of Sciences of the United States of America, 115(5), 873-878. doi: 10.1073/pnas.1710853114. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/27s2g5x2
Interactions between supercritical (sc) CO2and minerals are important when CO2is injected into geologic formations for storage and as working fluids for enhanced oil recovery, hydraulic fracturing, and geothermal energy extraction. It has previously
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______325::2a5f3434eafe0595925a0947d58e55e4
http://www.escholarship.org/uc/item/27s2g5x2
http://www.escholarship.org/uc/item/27s2g5x2
Autor:
Silva-Tamayo, JC, Lau, KV, Jost, AB, Payne, JL, Wignall, PB, Newton, RJ, Eisenhauer, A, Depaolo, DJ, Brown, S, Maher, K, Lehrmann, DJ, Altiner, D, Yu, M, Richoz, S, Paytan, A
Publikováno v:
Silva-Tamayo, JC; Lau, KV; Jost, AB; Payne, JL; Wignall, PB; Newton, RJ; et al.(2018). Global perturbation of the marine calcium cycle during the Permian-Triassic transition. Bulletin of the Geological Society of America, 130(7-8), 1323-1338. doi: 10.1130/B31818.1. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/5mk4w8rb
Geological Society of America Bulletin, vol 130, iss 7-8
Bulletin of the Geological Society of America, vol 130, iss 7-8
Geological Society of America Bulletin, vol 130, iss 7-8
Bulletin of the Geological Society of America, vol 130, iss 7-8
© 2018 The Authors. A negative shift in the calcium isotopic composition of marine carbonate rocks spanning the end-Permian extinction horizon in South China has been used to argue for an ocean acidification event coincident with mass extinction. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::f841207c88706ebd39ca6994526ece48
Autor:
Basu, A, Schilling, K, Brown, ST, Johnson, TM, Christensen, JN, Hartmann, M, Reimus, PW, Heikoop, JM, WoldeGabriel, G, DePaolo, DJ
Publikováno v:
Environmental science & technology, vol 50, iss 20
Basu, A; Schilling, K; Brown, ST; Johnson, TM; Christensen, JN; Hartmann, M; et al.(2016). Se Isotopes as Groundwater Redox Indicators: Detecting Natural Attenuation of Se at an in Situ Recovery U Mine. Environmental Science and Technology, 50(20), 10833-10842. doi: 10.1021/acs.est.6b01464. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/2kr0324w
Basu, A; Schilling, K; Brown, ST; Johnson, TM; Christensen, JN; Hartmann, M; et al.(2016). Se Isotopes as Groundwater Redox Indicators: Detecting Natural Attenuation of Se at an in Situ Recovery U Mine. Environmental Science and Technology, 50(20), 10833-10842. doi: 10.1021/acs.est.6b01464. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/2kr0324w
© 2016 American Chemical Society. One of the major ecological concerns associated with the in situ recovery (ISR) of uranium (U) is the environmental release of soluble, toxic selenium (Se) oxyanions generated by mining. Post-mining natural attenuat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6baa26dcde66dfba894fa11d4de56b0b
https://escholarship.org/uc/item/2kr0324w
https://escholarship.org/uc/item/2kr0324w
Probing atomic-scale processes at the ferrihydrite-water interface with reactive molecular dynamics.
Autor:
Hayatifar, Ardalan1 (AUTHOR) ardalan.hayatifar@usask.ca, Gravelle, Simon2 (AUTHOR), Moreno, Beatriz D.3 (AUTHOR), Schoepfer, Valerie A.1 (AUTHOR), Lindsay, Matthew B. J.1 (AUTHOR) matt.lindsay@usask.ca
Publikováno v:
Geochemical Transactions. 10/26/2024, Vol. 25 Issue 1, p1-14. 14p.