All abstracts by Richard J. Walker in conference series: Goldschmidt

(2024) The non-CArbonaceous Nature of Earth’s Late-Stage Accretion
Bermingham KR, Tornabene HA, Walker RJ, Godfrey LV, Meyer BS, Piccoli PM & Mojzsis S

(2024) Top Down? Bottom Up? Earth's Siderophile Element Riddles
Walker RJ

(2024) Magmatic and Tectonic Processes Recorded by Mantle Rocks of the Taitao Ophiolite (6 Myr), Southern Chile
Schilling ME, Plissart G, Akizawa N, Lin K-Y, Corgne A, Alvear M, González EJ, Marín C, Walker RJ, Anma R, Warren JM, Ishikawa A, Prigent C, González VE, Rivera A, Martínez FA, Donoso NF & González-Jiménez JM

(2024) Chemical and Isotopic Compositions of the IIG Iron Meteorites
Chiappe E, Hilton C, Ash RD & Walker RJ

(2024) Effects of Saharan Weathering on Highly Siderophile Elements in Ordinary Chondrites
Almas KS, Ash RD & Walker RJ

(2024) Evolution of Tungsten Isotopic Compositions Across the Hawaiian Archipelago
Willhite LN, Finlayson V, Williamson NMB, Weis D & Walker RJ

(2021) Siderophile Anomalies in the Easter Plume: Source or Process?
Finlayson VA, Schilling ME, Tornabene HA, Bermingham KR, Day JMD & Walker RJ

(2021) Global Chemical and Isotope Heterogeneity in the Early Earth's Mantle Revealed by Pilbara Komatiites and Basalts
Puchtel IS, Horan MF, Walker RJ, Nisbet E & Locmelis M

(2021) Tungsten-182 and Neodymium-142 Evidence for an Ancient Kimberlite Source
Nakanishi N, Carlson RW, Horan MF, Giuliani A, Woodhead J, Pearson DG & Walker RJ

(2021) The Search for Preserved Late-Stage Accretionary Components in Terrestrial Materials
Bermingham KR, Walker RJ, Finlayson VA, Tornabene HA, Peters B, Day JMD, Rudnick RL, Nakanishi N, Jackson MG, Pearson DG & Schilling ME

(2019) New Insights to Earth History Provided by Short-Lived Radiogenic Isotope Systems
Walker R & Mundl-Petermeier A

(2019) Ancient Lower Mantle Heterogeneities Revealed by Modern OIB – A Story Told by W and He Isotopes
Mundl-Petermeier A, Walker R, Fischer R & Jackson M

(2019) Siderophile Element Heterogeneity of the Early Mantle: The Western Australia Komatiite Connection
Puchtel IS, Nicklas RW, Slagle J, Locmelis M, Nisbet EG & Walker RJ

(2019) Lithophile-Siderophile Constraints on Hadean Processes Preserved in Hotspot Sources
Peters B, Mundl-Petermeier A, Carlson R, Walker R & Day J

(2019) Extinct Radionuclide Signatures from Juvenile Crustal Blocks within the Slave Craton
Reimink J, Pearson DG, Shirey SB, Carlson RW, Mundl-Petermeier A & Walker RJ

(2016) Investingating Signatures of Late Accretion: The Ruthenium Isotopic Composition of the Earth’s Mantle
Bermingham KR & Walker RJ

(2016) Siderophile Element Constraints on the Deep Earth: What’s Down There and How and When Did It Form?
Walker R

(2015) A Hadean Enriched Mantle Source Revealed by W Isotopes
Touboul M, Puchtel I & Walker R

(2015) Memories of Earth Formation in the Modern Mantle: W Isotopic Composition of Flood Basalt Lavas
Rizo H, Walker R, Carlson R, Mukhopadhyay S, Francis D & Jackson M

(2014) Mantle Composition, Structure and Distribution of Radiogenic Power: Paradigms of the Earth’s Interior
Arevalo Jr. R, McDonough W, Stracke A, Willbold M, Ireland T & Walker R

(2014) Chemical/Isotopic Tracing of Late Stages of Planetary Accretion
Walker R

(2014) Mantle Mixing Processes Revealed from HIMU Basalts
Day J, Cabral R, Jackson M & Walker R

(2014) Geochemical Effects of Alteration and Refertilization in Abyssal Peridotites
Day J, Walker R & Warren J

(2014) Silver in the Terrestrial Mantle
Horan M, Carlson R, Walker R & Jenner F

(2014) Investigating Terrestrial Mantle Evolution Using Ru Isotopes
Bermingham KR, Puchtel IS, O'Driscoll B & Walker RJ

(2014) Constraints on Late Accretion from W, Os, and Nd Isotopes in 2.4 Ga Vetreny Komatiites
Puchtel I, Touboul M & Walker R

(2014) Multiple Early Earth Differentiation Events Revealed by ¹⁴²Nd, ¹⁸²W, and HSE Abundances in Isua Samples
Rizo H, Walker RJ, Carlson RW, Horan M, Touboul M, Puchtel IS, Boyet M & Rosing M

(2014) Non-Chondritic ¹⁴²Nd and Archean ¹⁴²Nd and ¹⁸²W Variability Reconciled by Magma Ocean Crystallization and Overturn
Brown S, Elkins-Tanton L & Walker R

(2014) High-Precision Tungsten Isotope Analyses by Multicollection N-TIMS
Trinquier A, Touboul M & Walker RJ

(2014) Early Mantle Heterogeneities Recorded by 2.7 Ga Komatiites
Touboul M, Puchtel IS & Walker RJ

(2014) Large ¹⁸²W Anomalies in Eoarchean Residual Mantle Rocks from Northern Labrador, Canada
Liu J, Touboul M, Ishikawa A, Walker R & Pearson G

(2013) Effects of Subduction-Related Melt Extraction on Iapetus Ocean Mantle
O'Driscoll B, Walker R, Day J & Daly S

(2013) Early Mantle Composition and Evolution Inferred from ¹⁴²Nd and ¹⁸²W Variations in Isua Samples
Rizo H, Touboul M, Carlson RW, Boyet M, Puchtel IS & Walker RJ

(2013) Tungsten Isotope Heterogeneities in Archean Komatiites
Touboul M, Puchtel I & Walker R

(2013) Isotopic and Elemental Evidence of Magma Ocean Processes Recorded in Early Archean Komatiites
Puchtel I, Walker R, Touboul M & Blichert-Toft J

(2013) A Comprehensive Separation Procedure for Precise Determination of Re, Ir, Ru, Pt and Pd in Geological Samples
Chu Z, Walker R, Guo J, Yan Y, Yang Y & Zhang Y

(2013) New Constraints on the Magnitude and Timing of Late Accretion
Walker R, Touboul M, Puchtel I & Liu J

(2013) Formation Mechanisms of Reaction Zones in Mélange Zones: Evidence for Mechanical Mixing
Gorman J, Penniston-Dorland S, Walker R & Marschall H

(2012) Planetary Scale Sr Isotopic Heterogeneity
Moynier F, Day J, Okui W, Yokoyama T, Bouvier A, Walker R & Podosek F

(2012) The Upper Pennsylvanian Hushpuckney Black Shale Member from the Swope Formation in Kansas: Rhenium -Osmium Isotope Systematics, and the Highly Siderophile Elements (HSE)
Pitcher LL, Rasbury ET, Walker RJ & Watney WL

(2012) Combined ¹⁸²W, 186, ¹⁸⁷Os and ^142,143Nd Constraints on Terrestrial Differentiation and Mantle Mixing
Walker R, Touboul M & Puchtel I

(2012) Early Earth: An Insight from the Combined Os-Nd-Hf Isotope Systematics of Barberton Komatiites
Puchtel I, Touboul M, Blichert-Toft J & Walker R

(2012) Primordial Mantle Heterogeneities Revealed by Coupled ¹⁸²W and 186, ¹⁸⁷Os Investigations
Touboul M, Liu J, O'Neil J, Puchtel I & Walker R

(2012) Separation of Mo, W and HFSEs from Rock Samples for the Study of Isotope Anomalies in Meteorites
Nagai Y, Yokoyama T & Walker R

(2012) Bendego IC-Iron: HSE and Re-Os
Rios D, Carvalho W, Walker R, Davis D & Zucolotto ME

(2011) Uniform Os Isotopic Composition in Early-Formed Planetesimals
Walker R

(2011) ¹⁸⁶Os-¹⁸⁷Os and Highly Siderophile Element Abundance Systematics of Earth’s Upper Mantle
Day J, Warren J & Walker R

(2011) Tungsten Isotopic Anomalies in Archean Komatiites
Touboul M, Puchtel IS & Walker RJ

(2011) Evolution of Deep Mantle Sources as Inferred from Os-Nd Isotope Systematics of Archean Komatiites
Puchtel I & Walker R

(2011) Understanding Late Accretion on the Earth, Moon, and Mars
Bottke W, Walker R, Day J, Nesvorny D & Elkins-Tanton L

(2011) Comparative Sr-Nd-Pb-Hf-Os Isotopic Systematics of Xenolithic Peridotites from Yangyuan, North China Craton
Liu J, Carlson R, Rudnick R, Walker R, Wu F & Gao S

(2010) Clues to the Formation of the Terrestrial Planets from Highly Siderophile Elements
Walker R, Puchtel I, Day J, Galenas M & Brandon A

(2010) Highly Siderophile Elements in the Early Earth: A Story Told by Barberton Komatiites
Puchtel I, Walker R, Robin C, Arndt N, Nisbet E, Anhaeusser C & Byerly G

(2010) Highly Siderophile Elements as Tracers of Mantle-Crust Interactions in Subduction Zone Metamorphic Rocks: Evidence from the Franciscan Complex, CA
Penniston-Dorland S, Walker R, Pitcher L & Sorensen S

(2010) The HSE Budget in Early Mars and Genesis of Shergottites
Brandon A, Puchtel I, Day J & Walker R

(2010) ⁸⁴Sr Anomalies in Meteorites?
Moynier F, Day J, Bouvier A, Podosek F & Walker R

(2010) Melting and Refertilization in Peridotites: What Happens to Os?
Rudnick R & Walker R

(2010) ¹⁸⁶Os-¹⁸⁷Os Systematics of EM and HIMU Flavours
Day J, Jackson M & Walker R

(2010) 186-Os Systematics of Hawaiian Picrites
Ireland T, Walker R & Brandon A

(2010) Os Isotope Evidence for Diachronous Formation of Lithospheric Mantle beneath the Trans-North China Orogen, North China Craton
Liu J, Rudnick R, Walker R, Gao S, Wu F, Xu W & Xu Y

(2009) Fractionated Highly Siderophile Elements in Fertile Mantle Xenoliths
Palme H, Witt-Eickschen G & Walker R

(2009) Highly Siderophile Elements in the Mantles of the Terrestrial Planets
Walker R, Puchtel I & Day J

(2009) Highly Siderophile Element Evidence from Early Solar System Processes in Ordinary Chondrite Components
Horan M, Alexander C & Walker R

(2009) Recycled Lower Continental Crust: Re-Os Isotopic Evidence from Peridotite Xenoliths Entrained by Mesozoic High-Mg Diorites in the Eastern North China Craton
Xu W-L, Gao S, Yang D-B, Yuan H-L, Rudnick RL & Walker RJ

(2009) The Role of Volatiles during Asteroidal Differentiation
Day J, Walker R, Sunshine J, Ash R, Rumble D, Liu Y, McDonough B & Taylor L

(2009) Highly Siderophile Elements in the Earth’s Mantle: Message from the Archean Komatiite Zoo
Puchtel IS & Walker RJ

(2009) Re-Os Geochemistry of Fe-Rich Peridotites and Pyroxenites from Horní Bory, Czech Republic
Ackerman L, Walker R & Puchtel I

(2008) ¹⁸⁷Re-¹⁸⁷Os Isotopic and Highly Siderophile Element (HSE) Systematics of Pallasites
Lee SR, Walker RJ, McCoy TJ & McDonough WF

(2008) Highly Siderophile Elements and ¹⁸⁷Os/¹⁸⁸Os in the Parental Melts of Hawaiian Picrites
Ireland TJ & Walker R

(2008) Light Mo Isotopic Signatures in Chesapeake Bay Sediments
Scheiderich K, Dolor M, Helz G, Walker R & Kaufman AJ

(2008) Constraining Deep Mantle Contributions to Canary Island Lavas
Day J, Walker R, Hilton D, Carracedo J-C & Hanski E

(2008) Re-Os Isotope and HSE Systematics of 3.5 Ga Barberton Komatiites
Puchtel I & Walker R

(2008) Osmium Partitioning Behavior between Metal and Silicate Melt at High Pressure and Temperature: A New Experimental Approach
Yokoyama T, Walker D & Walker R

(2008) Chemical and Chronologic Complexity in the Oceanic Mantle: Evidence from the Taitao Ophiolite
Walker R, Schulte R, Schilling M, Horan M, Anma R & Farquhar J

(2007) Pt-Re-Os Isotope and HSE Systematics of Belingwe Komatiites
Puchtel I, Brandon A, Walker R & Nisbet E

(2007) Re-Os Depth Profile of the Upper Mantle beneath Central Europe
Ackerman L, Puchtel IS, Walker RJ & Jelínek E

(2007) The ¹⁸⁷Os/¹⁸⁸Os of the Convecting Upper Mantle
Walker R

(2007) Fractionated HSE in Suboceanic Mantle: Assessing the Influence of Refertilization Processes on Upper Mantle Peridotites
van Acken D, Becker H, Wombacher F, Walker RJ, McDonough WF, Ash RD & Piccoli PM

(2007) Geochemical Tracing of Core-Mantle Interaction: High-Precision W Isotopic Data on Komatiites Using TIMS
Becker H, Brandon A & Walker R

(2007) More on Os Isotope Anomalies in Chondrites: Possible Carriers
Yokoyama T, Rai V, Alexander C & Walker R

(2006) Re-Os evidence for age and origin of peridotites from the Dabie-Sulu UHP belt
Yuan H, Gao S, Rudnick RL, Jin Z & Walker RJ

(2006) The Search for Evidence of Chemical Interaction Between the Core and Mantle
Walker R, Ireland T & Brandon A

(2006) ¹⁸⁷Re-¹⁸⁷Os isotopic and highly siderophile element systematics of pallasites
Lee SR, Walker R, McCoy T & McDonough W

(2006) Behavior of PGEs and Re in Kilauea Iki lava lake, Hawaii
Helz R, Pitcher L & Walker R

(2005) Lithium Isotopic Fractionation in Pegmatites
Teng F, McDonough W, Rudnick R & Walker R

(2005) Pt-Re-Os Isotope and HSE Systematics of 2.8<!s><$>Ga Komatiites
Puchtel IS, Brandon AD, Humayun M & Walker RJ

(2005) Platinum-Osmium Isotope Evolution of the Earth's Mantle
Brandon A, Walker R, Puchtel I & Humayun M

(2004) Low Abundances of Highly Siderophile Elements in Lunar Mantle Imply Prolonged Late Accretion
Horan M, Walker R, Shearer C & Papike J

(2002) Permian-Triassic Komatiites and their Os Isotopic Characteristics in Northern Vietnam
Hanski E, Walker RJ, Polyakov GV, Glotov AI, Balykin PA & Hoa TT

(2002) Evolution of Osmium Isotopes In Komatiite Sources
Walker R

(2002) Ru and Mo Isotopic Constraints on the Scale of Isotopic Homogeneity in Meteorites and their Parent Bodies
Becker H & Walker R

(2001) The 98Tc-98Ru and ⁹⁹Tc-99Ru Chronometers: New Results on Iron Meteorites and Terrestrial Ru
Becker H & Walker RJ

(2001) The Fingerprint of the Late Veneer: Evidence from the Highly Siderophile Elements and Osmium Isotopes
Walker RJ, Horan MF & Morgan JW

(2000) Siderophile Elements in Earth's Upper Mantle and Lunar Breccias: Manifestations of the Same Late Influx
Morgan JW, Walker RJ, Brandon AD & Horan MF