Member Since 1982
Roberta L. Rudnick
Distinguished Professor, University of California Santa Barbara
AGU Research
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The Addition of Felsic Sediments to the Lower Continental Crust During the Variscan Orogeny
GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS
14 january 2025
Mary S. Ringwood, Sophia Ortner, Roberta L. Rudnic...
Lower crustal metasedimentary xenoliths (garnet‐sillimanite granulites) from the Bournac breccia pipe in the Massif Central, France, provide ...
Thermochronological Constraints on Heat Production, Composition, and Formation of Lower Continental Crust
PROBING THE LOWER CONTINENTAL CRUST USING MULTIDISCIPLINARY APPROACHES POSTER
volcanology, geochemistry and petrology | 11 december 2024
Francisco Apen, Roberta L. Rudnick
Temperatures of the lower crust and Moho are important boundary conditions for models of heat transfer and the bulk composition of continental crust. ...
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Coupled crustal maturation, decreasing surface temperature, and increasing δ18O of surface waters through geologic time based on triple oxygen and hydrogen isotopes of glacial diamictites
ADVANCES IN DEEP EARTH–SURFACE INTERACTIONS I POSTER
study of earth's deep interior | 11 december 2024
Ilya Bindeman, Roberta L. Rudnick, Richard M. Gasc...
Oxygen, a major element in both the hydrosphere and lithosphere provides an important link between evolving lithosphere and surface waters. We presen...
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REE and Radiogenic Sr, Nd Isotopic Variability in Saprolites formed on Metadiabase: Implications for REE Mobility and Age of Saprolitization
TOPICS IN VOLCANOLOGY, GEOCHEMISTRY, AND PETROLOGY II POSTER
volcanology, geochemistry and petrology | 15 december 2023
Utpalendu Haldar, Ramananda Chakrabarti, Roberta L...
We report trace element concentration, 143Nd/144Nd and 87Sr/86Sr in saprolites developed on the Mesozoic subvertical, 7 m thick Cayce metadiabase dike...
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To the lower crust and back again: a tectonic history of metasedimentary xenoliths from the Eocene Missouri Breaks diatremes, central Montana
RATES AND DATES OF LITHOSPHERIC PROCESSES II ORAL
tectonophysics | 15 december 2023
Mary S. Ringwood, Sophia E. Ortner, Gareth Seward,...
Metapelitic xenoliths carried within the Missouri Breaks diatremes in central Montana, USA, document an ~1800 Ma history of sediment deposition, tecto...
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The role of scapolite in sequestering SO3 and CO2 in the lower crust and implications for S isotope signatures of crustal fluids.
VOLATILES AND CHALCOPHILES FROM MANTLE TO SURFACE: SOURCES, TRANSPORT, AND MAGMATIC-HYDROTHERMAL RELEASE I ORAL
volcanology, geochemistry and petrology | 14 december 2023
Johannes Haemmerli, Anthony I. Kemp, Anne-Sophie B...
Scapolite group minerals rich in SO3 and/or CO2 (Ca4Al6Si6O24SO4 - Ca4A16Si6024CO3) are common in lower crustal rocks, such as granulites. Scapolite m...
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Temporal evolution of the upper continental crust revealed by potassium isotope geochemistry of glacial diamictites
THE ARCHEAN: CRUSTAL EVOLUTION AND PLANETARY HABITABILITY II POSTER
volcanology, geochemistry and petrology | 11 december 2023
Tianyi Huang, Fang-zhen Teng, Roberta L. Rudnick, ...
To investigate the possible secular change in the composition of the upper crust, we analyzed the stable K isotope composition of glacial diamictite c...
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Halogen (F, Cl, Br, and I) Systematics in Loess: Implications for Halogen Enrichments at Earth’s Land Surface
ORIGIN, DISTRIBUTION, AND TRANSPORT OF VOLATILES IN EARTH AND TERRESTRIAL PLANETS I POSTER
volcanology, geochemistry and petrology | 11 december 2023
Pengyuan Han, Roberta L. Rudnick, Zhaochu Hu, Tao ...
Halogens (F, Cl, Br, and I) mainly reside on Earths surface and play a critical role in modulating the habitability of the Earth. However, their behav...
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