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Your search keyword '"BLICHERT-TOFT, JANNE"' showing total 30 results
Start Over Author "BLICHERT-TOFT, JANNE" Journal geochemistry, geophysics, geosystems: g3
30 results on '"BLICHERT-TOFT, JANNE"'

1. Thank You to Our 2021 Reviewers.

Author

Faccenna, Claudio, Asimow, Paul, Behr, Whitney, Blichert‐Toft, Janne, Edmonds, Marie, Feinberg, Joshua, Lithgow‐Bertelloni, Carolina R., Long, Maureen, Paytan, Adina, van der Beek, Peter, and Williams, Branwen

Subjects
PEERS
Abstract

Key Point: The editors thank the 2021 peer reviewers [ABSTRACT FROM AUTHOR]

Published
2022
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2. Thank You to Our 2020 Reviewers.

Author

Faccenna, Claudio, Becker, Thorsten, Behr, Whitney, Blichert‐Toft, Janne, Edmonds, Marie, Faul, Ulrich, Feinberg, Joshua, Long, Maureen, Lithgow‐Bertelloni, Carolina R., Paytan, Adina, van der Beek, Peter, and Williams, Branwen

Subjects
ABBEY, Alyssa, ADAM, Claudia, ADATTE, Thierry
Abstract

Key Points: The editors thank the 2020 peer reviewers [ABSTRACT FROM AUTHOR]

Published
2021
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3. Thank You to Our 2019 Reviewers.

Author

Faccenna, Claudio, Becker, Thorsten, Behr, Whitney, Blichert‐Toft, Janne, Edmonds, Marie, Faul, Ulrich, Feinberg, Joshua, Long, Maureen, Lithgow‐Bertelloni, Carolina R., Paytan, Adina, Beek, Peter, and Williams, Branwen

Subjects
AUTHORS, PROFESSIONAL peer review
Abstract

The publishing process relies on the work of volunteer reviewers, and evaluating the interdisciplinary papers published in G‐Cubed can be challenging. As Editors and Associate Editors, we would like to give our appreciation to all reviewers and would like to acknowledge them in this editorial. G‐Cubed published 326 manuscripts out of 650 submissions in 2019, thanks on the efforts of 860 dedicated reviewers. Their names are listed below, and in italics are those who provided three or more reviews. A big thank you from the G‐Cubed team! Key Point: The editors thank the 2019 peer reviewers [ABSTRACT FROM AUTHOR]

Published
2020
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4. Hot and Heterogenous High‐3He/4He Components: New Constraints From Proto‐Iceland Plume Lavas From Baffin Island.

Author

Willhite, Lori N., Jackson, Matthew G., Blichert‐Toft, Janne, Bindeman, Ilya, Kurz, Mark D., Halldórsson, Sæmundur A., Harðardóttir, Sunna, Gazel, Esteban, Price, Allison A., and Byerly, Benjamin L.

Subjects
PLEISTOCENE stratigraphic geology, PRECAMBRIAN, GEOLOGICAL time scales, ATMOSPHERIC sciences
Abstract

The Icelandic hotspot has erupted basaltic magma with the highest mantle‐derived 3He/4He over a period spanning much of the Cenozoic, from the early‐Cenozoic Baffin Island‐West Greenland flood basalt province (49.8 RA), to mid‐Miocene lavas in northwest Iceland (40.2 to 47.5 RA), to Pleistocene lavas in Iceland's neovolcanic zone (34.3 RA). The Baffin Island lavas transited through and potentially assimilated variable amounts of Precambrian continental basement. We use geochemical indicators sensitive to continental crust assimilation (Nb/Th, Ce/Pb, MgO) to identify the least crustally contaminated lavas. Four lavas, identified as "least crustally contaminated," have high MgO (>15 wt.%), and Nb/Th and Ce/Pb that fall within the mantle range (Nb/Th = 15.6 ± 2.6, Ce/Pb = 24.3 ± 4.3). These lavas have 87Sr/86Sr = 0.703008–0.703021, 143Nd/144Nd = 0.513094–0.513128, 176Hf/177Hf = 0.283265–0.283284, 206Pb/204Pb = 17.7560–17.9375, 3He/4He up to 39.9 RA, and mantle‐like δ18O of 5.03–5.21‰. The radiogenic isotopic compositions of the least crustally contaminated lavas are more geochemically depleted than Iceland high‐3He/4He lavas, a shift that cannot be explained by continental crust assimilation in the Baffin suite. Thus, we argue for the presence of two geochemically distinct high‐3He/4He components within the Iceland plume. Additionally, the least crustally contaminated primary melts from Baffin Island‐West Greenland have higher mantle potential temperatures (1510 to 1630 °C) than Siqueiros mid‐ocean ridge basalts (1300 to 1410 °C), which attests to a hot, buoyant plume origin for early Iceland plume lavas. These observations support the contention that the geochemically heterogeneous high‐3He/4He domain is dense, located in the deep mantle, and sampled by only the hottest plumes. Key Points: Baffin Island‐West Greenland high‐3He/4He lavas are more geochemically depleted than any other high‐3He/4He lavas globallyThe isotopic composition of the high‐3He/4He mantle source in the Iceland plume has evolved through timeBaffin Island and West Greenland primary melts record hotter temperatures than high‐MgO MORB, consistent with a deep, dense plume source [ABSTRACT FROM AUTHOR]

Published
2019
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5. Thank You to Our 2018 Peer Reviewers.

Author

Faccenna, Claudio, Becker, Thorsten W., Blichert‐Toft, Janne, Edmonds, Marie, Feinberg, Joshua M., Faul, Ulrich, Long, Maureen D., Paytan, Adina, and Williams, Branwen

Subjects
ADAM, Claudia, ADAMS, A., AUSTIN, James
Abstract

The editorial and scientific publishing process relies on the sustained work of volunteer reviewers, and evaluating the inter‐disciplinary and broad interest papers published in Geochemistry, Geophysics, Geosystems can be a particular challenge. As editors and associated editors, we are therefore hugely appreciative of the efforts of our reviewers, and would like to thank and acknowledge them in this editorial. G‐Cubed published 271 manuscripts in 2018, and for this we were able to rely on the efforts of 873 dedicated reviewers. A big thank you from the G‐Cubed team! Key Points: The editors thank the 2018 peer reviewers [ABSTRACT FROM AUTHOR]

Published
2019
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25. Theistareykir revisited.

Author

Stracke, Andreas, Zindler, Alan, Salters, Vincent J. M., McKenzie, Dan, Blichert-Toft, Janne, Albarède, Francis, and Grönvold, Karl

Published
2003
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