Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy

Cassata, William S.; Cohen, Benjamin E.; Mark, Darren F.; Trappitsch, Reto; Crow, Carolyn A.; Wimpenny, Joshua; Lee, Martin R.; Smith, Caroline L.

doi:10.1126/sciadv.aap8306

Title: Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy

Abstract

Martian meteorite Northwest Africa (NWA) 7034 and its paired stones are the only brecciated regolith samples from Mars with compositions that are representative of the average martian crust. These samples therefore provide a unique opportunity to constrain the processes of metamorphism and alteration in the martian crust, which we have investigated via U-Pu/Xe, ⁴⁰Ar/³⁹Ar, and U-Th-Sm/He chronometry. U-Pu/Xe ages are comparable to previously reported Sm-Nd and U-Pb ages obtained from NWA 7034 and confirm an ancient (>4.3 billion years) age for the source lithology. After almost 3000 million years (Ma) of quiescence, the source terrain experienced several hundred million years of thermal metamorphism recorded by the K-Ar system that appears to have varied both spatially and temporally. Such protracted metamorphism is consistent with plume-related magmatism and suggests that the source terrain covered an areal extent comparable to plume-fed edifices (hundreds of square kilometers). The retention of such expansive, ancient volcanic terrains in the southern highlands over billions of years suggests that formation of the martian crustal dichotomy, a topographic and geophysical divide between the heavily cratered southern highlands and smoother plains of the northern lowlands, likely predates emplacement of the NWA 7034 source terrain—that is, it formed within the firstmore » ~100 Ma of planetary formation.« less

Authors:

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^[2];

^[3];

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^[1]; Wimpenny, Joshua ^[1];

^[4];

^[5]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
Scottish Univ., East Kilbride (United Kingdom). Environmental Research Centre; Univ. of Glasgow, Scotland (United Kingdom). School of Geographical and Earth Sciences
Scottish Univ., East Kilbride (United Kingdom). Environmental Research Centre; Univ. of St. Andrews, Scotland (United Kingdom). Dept. of Earth and Environmental Sciences
Univ. of Glasgow, Scotland (United Kingdom). School of Geographical and Earth Sciences
Univ. of Glasgow, Scotland (United Kingdom). School of Geographical and Earth Sciences; Natural History Museum, London (United Kingdom). Dept. of Earth Sciences

Publication Date:: Wed May 23 00:00:00 EDT 2018

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1502038

Report Number(s):: LLNL-JRNL-731792
Journal ID: ISSN 2375-2548; 883329

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Science Advances

Additional Journal Information:: Journal Volume: 4; Journal Issue: 5; Journal ID: ISSN 2375-2548

Publisher:: AAAS

Country of Publication:: United States

Language:: English

Subject:: 58 GEOSCIENCES

Citation Formats


                    Cassata, William S., Cohen, Benjamin E., Mark, Darren F., Trappitsch, Reto, Crow, Carolyn A., Wimpenny, Joshua, Lee, Martin R., and Smith, Caroline L. Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy.  United States: N. p., 2018. 
Web.  doi:10.1126/sciadv.aap8306.

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                    Cassata, William S., Cohen, Benjamin E., Mark, Darren F., Trappitsch, Reto, Crow, Carolyn A., Wimpenny, Joshua, Lee, Martin R., & Smith, Caroline L. Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy.  United States.  https://doi.org/10.1126/sciadv.aap8306

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                    Cassata, William S., Cohen, Benjamin E., Mark, Darren F., Trappitsch, Reto, Crow, Carolyn A., Wimpenny, Joshua, Lee, Martin R., and Smith, Caroline L. Wed .  
"Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy".  United States.  https://doi.org/10.1126/sciadv.aap8306.  https://www.osti.gov/servlets/purl/1502038.

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@article{osti_1502038,

  title        = {Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy},

  author       = {Cassata, William S. and Cohen, Benjamin E. and Mark, Darren F. and Trappitsch, Reto and Crow, Carolyn A. and Wimpenny, Joshua and Lee, Martin R. and Smith, Caroline L.},

  abstractNote = {Martian meteorite Northwest Africa (NWA) 7034 and its paired stones are the only brecciated regolith samples from Mars with compositions that are representative of the average martian crust. These samples therefore provide a unique opportunity to constrain the processes of metamorphism and alteration in the martian crust, which we have investigated via U-Pu/Xe, 40Ar/39Ar, and U-Th-Sm/He chronometry. U-Pu/Xe ages are comparable to previously reported Sm-Nd and U-Pb ages obtained from NWA 7034 and confirm an ancient (>4.3 billion years) age for the source lithology. After almost 3000 million years (Ma) of quiescence, the source terrain experienced several hundred million years of thermal metamorphism recorded by the K-Ar system that appears to have varied both spatially and temporally. Such protracted metamorphism is consistent with plume-related magmatism and suggests that the source terrain covered an areal extent comparable to plume-fed edifices (hundreds of square kilometers). The retention of such expansive, ancient volcanic terrains in the southern highlands over billions of years suggests that formation of the martian crustal dichotomy, a topographic and geophysical divide between the heavily cratered southern highlands and smoother plains of the northern lowlands, likely predates emplacement of the NWA 7034 source terrain—that is, it formed within the first ~100 Ma of planetary formation.},

  doi          = {10.1126/sciadv.aap8306},

  journal      = {Science Advances},

  number       = 5,

  volume       = 4,

  place        = {United States},

  year         = {Wed May 23 00:00:00 EDT 2018},

  month        = {Wed May 23 00:00:00 EDT 2018}

}

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Artemieva, Natalia; Ivanov, Boris
Icarus, Vol. 171, Issue 1
DOI: 10.1016/j.icarus.2004.05.003

Towards self-consistent modeling of the martian dichotomy: The influence of one-ridge convection on crustal thickness distribution
journal, August 2009

Keller, Tobias; Tackley, Paul J.
Icarus, Vol. 202, Issue 2
DOI: 10.1016/j.icarus.2009.03.029

Impact-induced hydrothermal activity on early Mars
journal, January 2005

Abramov, Oleg; Kring, David A.
Journal of Geophysical Research, Vol. 110, Issue E12
DOI: 10.1029/2005je002453

Impact origin for the Martian crustal dichotomy: Half emptied or half filled?
journal, January 2010

Reese, C. C.; Orth, C. P.; Solomatov, V. S.
Journal of Geophysical Research, Vol. 115, Issue E5
DOI: 10.1029/2009je003506

Martian crustal dichotomy and Tharsis formation by partial melting coupled to early plume migration: MARTIAN DICHOTOMY BY MELTING AND THARSIS
journal, January 2012

Šrámek, Ondřej; Zhong, Shijie
Journal of Geophysical Research: Planets, Vol. 117, Issue E1
DOI: 10.1029/2011je003867

Decay Properties of Plutonium-244, and Comments on its Existence in Nature
journal, October 1966

Fields, P. R.; Friedman, A. M.; Milsted, J.
Nature, Vol. 212, Issue 5058
DOI: 10.1038/212131a0

Origin and age of the earliest Martian crust from meteorite NWA 7533
journal, November 2013

Humayun, M.; Nemchin, A.; Zanda, B.
Nature, Vol. 503, Issue 7477
DOI: 10.1038/nature12764

Record of the ancient martian hydrosphere and atmosphere preserved in zircon from a martian meteorite
journal, August 2014

Nemchin, A. A.; Humayun, M.; Whitehouse, M. J.
Nature Geoscience, Vol. 7, Issue 9
DOI: 10.1038/ngeo2231

Ejection of Martian meteorites
journal, October 2005

Fritz, Jörg; Artemieva, Natalia; Greshake, Ansgar
Meteoritics & Planetary Science, Vol. 40, Issue 9-10
DOI: 10.1111/j.1945-5100.2005.tb00409.x

Nickeliferous pyrite tracks pervasive hydrothermal alteration in Martian regolith breccia: A study in NWA 7533
journal, November 2015

Lorand, Jean-Pierre; Hewins, Roger H.; Remusat, Laurent
Meteoritics & Planetary Science, Vol. 50, Issue 12
DOI: 10.1111/maps.12565

New Perspectives on Ancient Mars
journal, February 2005

Solomon, S. C.
Science, Vol. 307, Issue 5713
DOI: 10.1126/science.1101812

Works referencing / citing this record:

Evidence for Asteroid Scattering and Distal Solar System Solids From Meteorite Paleomagnetism
journal, April 2020

Bryson, James F. J.; Weiss, Benjamin P.; Lima, Eduardo A.
The Astrophysical Journal, Vol. 892, Issue 2
DOI: 10.3847/1538-4357/ab7cd4

Record of low-temperature aqueous alteration of Martian zircon during the late Amazonian
journal, June 2019

Guitreau, Martin; Flahaut, Jessica
Nature Communications, Vol. 10, Issue 1
DOI: 10.1038/s41467-019-10382-y

Decline of giant impacts on Mars by 4.48 billion years ago and an early opportunity for habitability
journal, June 2019

Moser, D. E.; Arcuri, G. A.; Reinhard, D. A.
Nature Geoscience, Vol. 12, Issue 7
DOI: 10.1038/s41561-019-0380-0

Ancient geologic events on Mars revealed by zircons and apatites from the Martian regolith breccia NWA 7034
journal, January 2019

Hu, Sen; Lin, Yangting; Zhang, Jianchao
Meteoritics & Planetary Science, Vol. 54, Issue 4
DOI: 10.1111/maps.13256

A small S-MIF signal in Martian regolith pyrite: Implications for the atmosphere
journal, December 2020

Tomkins, Andrew G.; Alkemade, Sarah L.; Nutku, Sophie E.
Geochimica et Cosmochimica Acta, Vol. 290
DOI: 10.1016/j.gca.2020.07.022

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Title: Chronology of martian breccia NWA 7034 and the formation of the martian crustal dichotomy

Abstract

Citation Formats

Argon diffusion in plagioclase and implications for thermochronometry: A case study from the Bushveld Complex, South Africa journal, November 2009

Spontaneous fission decay constant of 238U determined by SSNTD method using CR-39 and DAP plates journal, December 2005

Precision Measurement of Half-Lives and Specific Activities of U 235 and U 238 journal, November 1971

Reference Values Following ISO Guidelines for Frequently Requested Rock Reference Materials journal, February 2016

Three-dimensional simulations of the southern polar giant impact hypothesis for the origin of the Martian dichotomy: Southern Impact for Martian Dichotomy journal, December 2014

SmNdPu timepieces in the Angra dos Reis meteorite journal, June 1977

Response to the comment by W.H. Schwarz et al. on “Joint determination of 40K decay constants and 40Ar∗/40K for the Fish Canyon sanidine standard, and improved accuracy for 40Ar/39Ar geochronology” by P.R. Renne et al. (2010) journal, September 2011

Towards self-consistent modeling of the martian dichotomy: The influence of one-ridge convection on crustal thickness distribution journal, August 2009

Lead diffusion in apatite and zircon using ion implantation and Rutherford Backscattering techniques journal, June 1991

A redetermination of the isotopic abundances of atmospheric Ar journal, September 2006

A Noachian source region for the "Black Beauty" meteorite, and a source lithology for Mars surface hydrated dust? text, January 2015

(U-Th)/He Dating: Techniques, Calibrations, and Applications journal, January 2002

Geologic history of Martian regolith breccia Northwest Africa 7034: Evidence for hydrothermal activity and lithologic diversity in the Martian crust: Geologic History of NWA 7034 journal, October 2016

Petrography and composition of Martian regolith breccia meteorite Northwest Africa 7475 journal, February 2015

Pb-isotopic evidence for an early, enriched crust on Mars journal, January 2015

Voluminous volcanism on early Mars revealed in Valles Marineris journal, February 1999

Neon produced by solar cosmic rays in ordinary chondrites journal, March 2017

Ancient impactor components preserved and reworked in martian regolith breccia Northwest Africa 7034 journal, October 2016

Evidence for shock heating and constraints on Martian surface temperatures revealed by 40Ar/39Ar thermochronometry of Martian meteorites journal, December 2010

Launch of martian meteorites in oblique impacts journal, September 2004

Noble gases in 18 Martian meteorites and angrite Northwest Africa 7812-Exposure ages, trapped gases, and a re-evaluation of the evidence for solar cosmic ray-produced neon in shergottites and other achondrites text, January 2016

A Noachian source region for the “Black Beauty” meteorite, and a source lithology for Mars surface hydrated dust? journal, October 2015

Origin and age of the earliest Martian crust from meteorite NWA 7533 journal, November 2013

On the origin of hypersthene chondrites: Ages and shock effects of black chondrites journal, January 1967

Hemispheres Apart: The Crustal Dichotomy on Mars journal, May 2007

Modern atmospheric signatures in 4.4 Ga Martian meteorite NWA 7034 journal, August 2014

Taking the pulse of Mars via dating of a plume-fed volcano journal, October 2017

Constraints on fallout melt glass formation from a near-surface nuclear test journal, July 2014

Barium silicates of the Berisal Complex, Switzerland: A study in geochronology and rare-gas release systematics journal, July 2007

Record of the ancient martian hydrosphere and atmosphere preserved in zircon from a martian meteorite journal, August 2014

Implications of an impact origin for the martian hemispheric dichotomy journal, June 2008

Decay Properties of Plutonium-244, and Comments on its Existence in Nature journal, October 1966

Common asteroid break-up events of eucrites, diogenites, and howardites and cosmic-ray production rates for noble gases in achondrites journal, January 1995

A quasi-simple ablation model for large meteorite entry: theory vs observations journal, May 1979

Rare-earth-element minerals in martian breccia meteorites NWA 7034 and 7533: Implications for fluid–rock interaction in the martian crust journal, October 2016

Nickeliferous pyrite tracks pervasive hydrothermal alteration in Martian regolith breccia: A study in NWA 7533 journal, November 2015

Unique Meteorite from Early Amazonian Mars: Water-Rich Basaltic Breccia Northwest Africa 7034 journal, January 2013

A new approach to cosmogenic corrections in 40Ar/39Ar chronometry: Implications for the ages of Martian meteorites journal, August 2016

Heavy noble gases in solar wind delivered by Genesis mission journal, February 2014

Systematic variations of argon diffusion in feldspars and implications for thermochronometry journal, July 2013

Impact megadomes and the origin of the martian crustal dichotomy journal, June 2011

Mega-impact formation of the Mars hemispheric dichotomy journal, June 2008

Fluid dynamics of local martian magma oceans journal, September 2006

A MATLAB™ code to perform weighted linear regression with (correlated or uncorrelated) errors in bivariate data journal, April 2011

Argon diffusion in pyroxenes: Implications for thermochronometry and mantle degassing journal, April 2011

The geochemical coherence of Pu and Nd and the ratio of the early solar system journal, October 1982

Noble gases in 18 Martian meteorites and angrite Northwest Africa 7812-Exposure ages, trapped gases, and a re-evaluation of the evidence for solar cosmic ray-produced neon in shergottites and other achondrites journal, January 2016

The volcanic history of Mars: High-resolution crater-based studies of the calderas of 20 volcanoes journal, February 2011

Rb-Sr and Sm-Nd isotopic and REE studies of igneous components in the bulk matrix domain of Martian breccia Northwest Africa 7034 journal, February 2016

Cosmogenic nuclides in stony meteorites revisited journal, July 2009

Constraints on the formation of the Martian crustal dichotomy from remnant crustal magnetism journal, December 2012

Petrology of igneous clasts in Northwest Africa 7034: Implications for the petrologic diversity of the martian crust journal, May 2015

Ejection of Martian meteorites journal, October 2005

Degree-1 mantle convection and the crustal dichotomy on Mars journal, June 2001

Neon produced by solar cosmic rays in ordinary chondrites text, January 2017

Plutonium-244: Confirmation as an Extinct Radioactivity journal, May 1971

Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary journal, February 2013

Ancient lowlands on Mars: ANCIENT LOWLANDS ON MARS journal, May 2002

U-Xe, U-Kr, and U-Pb systematics for dating uranium minerals and investigations of the production of nucleogenic neon and argon journal, March 1993

Round-robin 230Th–234U age dating of bulk uranium for nuclear forensics journal, July 2015

Helium loss from Martian meteorites mainly induced by shock metamorphism: Evidence from new data and a literature compilation journal, November 2008

The global martian volcanic evolutionary history journal, May 2009

Geothermochronology based on noble gases: I. Stability of the U-Xe isotopic system in nonmetamict zircons journal, January 2009

Possible formation of ancient crust on Mars through magma ocean processes journal, January 2005

(U-Th)/He ages of phosphates from Zagami and ALHA77005 Martian meteorites: Implications to shock temperatures journal, January 2017

New Perspectives on Ancient Mars journal, February 2005

Crustal structure of Mars from gravity and topography journal, January 2004

Meteorite constraints on Martian atmospheric loss and paleoclimate journal, December 2017

Shock-implanted noble gases: An experimental study with implications for the origin of Martian gases in shergottite meteorites journal, January 1986

230 Th- 234 U model ages of some uranium standard reference materials journal, September 2011

A colossal impact enriched Mars' mantle with noble metals text, January 2017

A colossal impact enriched Mars' mantle with noble metals: Late Accretion on Mars journal, June 2017

U-Xe, U-Kr, and U-Pb systematics for dating uranium minerals and investigations of the production of nucleogenic neon and argon journal, March 1993

On the origin of hypersthene chondrites: Ages and shock effects of black chondrites journal, January 1967

A quasi-simple ablation model for large meteorite entry: theory vs observations journal, May 1979

Argon diffusion in pyroxenes: Implications for thermochronometry and mantle degassing journal, April 2011

Pb-isotopic evidence for an early, enriched crust on Mars journal, January 2015

Argon diffusion in plagioclase and implications for thermochronometry: A case study from the Bushveld Complex, South Africa
journal, November 2009

Spontaneous fission decay constant of 238U determined by SSNTD method using CR-39 and DAP plates
journal, December 2005

Precision Measurement of Half-Lives and Specific Activities of ${}^{235}U$ and ${}^{238}U$
journal, November 1971

Reference Values Following ISO Guidelines for Frequently Requested Rock Reference Materials
journal, February 2016

Three-dimensional simulations of the southern polar giant impact hypothesis for the origin of the Martian dichotomy: Southern Impact for Martian Dichotomy
journal, December 2014

SmNdPu timepieces in the Angra dos Reis meteorite
journal, June 1977

Response to the comment by W.H. Schwarz et al. on “Joint determination of 40K decay constants and 40Ar∗/40K for the Fish Canyon sanidine standard, and improved accuracy for 40Ar/39Ar geochronology” by P.R. Renne et al. (2010)
journal, September 2011

Towards self-consistent modeling of the martian dichotomy: The influence of one-ridge convection on crustal thickness distribution
journal, August 2009

Lead diffusion in apatite and zircon using ion implantation and Rutherford Backscattering techniques
journal, June 1991

A redetermination of the isotopic abundances of atmospheric Ar
journal, September 2006

A Noachian source region for the "Black Beauty" meteorite, and a source lithology for Mars surface hydrated dust?
text, January 2015

(U-Th)/He Dating: Techniques, Calibrations, and Applications
journal, January 2002

Geologic history of Martian regolith breccia Northwest Africa 7034: Evidence for hydrothermal activity and lithologic diversity in the Martian crust: Geologic History of NWA 7034
journal, October 2016

Petrography and composition of Martian regolith breccia meteorite Northwest Africa 7475
journal, February 2015

Pb-isotopic evidence for an early, enriched crust on Mars
journal, January 2015

Voluminous volcanism on early Mars revealed in Valles Marineris
journal, February 1999

Neon produced by solar cosmic rays in ordinary chondrites
journal, March 2017

Ancient impactor components preserved and reworked in martian regolith breccia Northwest Africa 7034
journal, October 2016

Evidence for shock heating and constraints on Martian surface temperatures revealed by 40Ar/39Ar thermochronometry of Martian meteorites
journal, December 2010

Launch of martian meteorites in oblique impacts
journal, September 2004

Noble gases in 18 Martian meteorites and angrite Northwest Africa 7812-Exposure ages, trapped gases, and a re-evaluation of the evidence for solar cosmic ray-produced neon in shergottites and other achondrites
text, January 2016

A Noachian source region for the “Black Beauty” meteorite, and a source lithology for Mars surface hydrated dust?
journal, October 2015

Origin and age of the earliest Martian crust from meteorite NWA 7533
journal, November 2013

On the origin of hypersthene chondrites: Ages and shock effects of black chondrites
journal, January 1967

Hemispheres Apart: The Crustal Dichotomy on Mars
journal, May 2007

Modern atmospheric signatures in 4.4 Ga Martian meteorite NWA 7034
journal, August 2014

Taking the pulse of Mars via dating of a plume-fed volcano
journal, October 2017

Constraints on fallout melt glass formation from a near-surface nuclear test
journal, July 2014

Barium silicates of the Berisal Complex, Switzerland: A study in geochronology and rare-gas release systematics
journal, July 2007

Record of the ancient martian hydrosphere and atmosphere preserved in zircon from a martian meteorite
journal, August 2014

Implications of an impact origin for the martian hemispheric dichotomy
journal, June 2008

Decay Properties of Plutonium-244, and Comments on its Existence in Nature
journal, October 1966

Common asteroid break-up events of eucrites, diogenites, and howardites and cosmic-ray production rates for noble gases in achondrites
journal, January 1995

A quasi-simple ablation model for large meteorite entry: theory vs observations
journal, May 1979

Rare-earth-element minerals in martian breccia meteorites NWA 7034 and 7533: Implications for fluid–rock interaction in the martian crust
journal, October 2016

Nickeliferous pyrite tracks pervasive hydrothermal alteration in Martian regolith breccia: A study in NWA 7533
journal, November 2015

Unique Meteorite from Early Amazonian Mars: Water-Rich Basaltic Breccia Northwest Africa 7034
journal, January 2013

A new approach to cosmogenic corrections in 40Ar/39Ar chronometry: Implications for the ages of Martian meteorites
journal, August 2016

Heavy noble gases in solar wind delivered by Genesis mission
journal, February 2014

Systematic variations of argon diffusion in feldspars and implications for thermochronometry
journal, July 2013

Impact megadomes and the origin of the martian crustal dichotomy
journal, June 2011

Mega-impact formation of the Mars hemispheric dichotomy
journal, June 2008

Fluid dynamics of local martian magma oceans
journal, September 2006

A MATLAB™ code to perform weighted linear regression with (correlated or uncorrelated) errors in bivariate data
journal, April 2011

Argon diffusion in pyroxenes: Implications for thermochronometry and mantle degassing
journal, April 2011

The geochemical coherence of Pu and Nd and the ratio of the early solar system
journal, October 1982

Noble gases in 18 Martian meteorites and angrite Northwest Africa 7812-Exposure ages, trapped gases, and a re-evaluation of the evidence for solar cosmic ray-produced neon in shergottites and other achondrites
journal, January 2016

The volcanic history of Mars: High-resolution crater-based studies of the calderas of 20 volcanoes
journal, February 2011

Rb-Sr and Sm-Nd isotopic and REE studies of igneous components in the bulk matrix domain of Martian breccia Northwest Africa 7034
journal, February 2016

Cosmogenic nuclides in stony meteorites revisited
journal, July 2009

Constraints on the formation of the Martian crustal dichotomy from remnant crustal magnetism
journal, December 2012

Petrology of igneous clasts in Northwest Africa 7034: Implications for the petrologic diversity of the martian crust
journal, May 2015

Ejection of Martian meteorites
journal, October 2005

Degree-1 mantle convection and the crustal dichotomy on Mars
journal, June 2001

Neon produced by solar cosmic rays in ordinary chondrites
text, January 2017

Plutonium-244: Confirmation as an Extinct Radioactivity
journal, May 1971

Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary
journal, February 2013

Ancient lowlands on Mars: ANCIENT LOWLANDS ON MARS
journal, May 2002

U-Xe, U-Kr, and U-Pb systematics for dating uranium minerals and investigations of the production of nucleogenic neon and argon
journal, March 1993

Round-robin 230Th–234U age dating of bulk uranium for nuclear forensics
journal, July 2015

Helium loss from Martian meteorites mainly induced by shock metamorphism: Evidence from new data and a literature compilation
journal, November 2008

The global martian volcanic evolutionary history
journal, May 2009

Geothermochronology based on noble gases: I. Stability of the U-Xe isotopic system in nonmetamict zircons
journal, January 2009

Possible formation of ancient crust on Mars through magma ocean processes
journal, January 2005

(U-Th)/He ages of phosphates from Zagami and ALHA77005 Martian meteorites: Implications to shock temperatures
journal, January 2017

New Perspectives on Ancient Mars
journal, February 2005

Crustal structure of Mars from gravity and topography
journal, January 2004

Meteorite constraints on Martian atmospheric loss and paleoclimate
journal, December 2017

Shock-implanted noble gases: An experimental study with implications for the origin of Martian gases in shergottite meteorites
journal, January 1986

²³⁰ Th- ²³⁴ U model ages of some uranium standard reference materials
journal, September 2011

A colossal impact enriched Mars' mantle with noble metals
text, January 2017

A colossal impact enriched Mars' mantle with noble metals: Late Accretion on Mars
journal, June 2017

U-Xe, U-Kr, and U-Pb systematics for dating uranium minerals and investigations of the production of nucleogenic neon and argon
journal, March 1993

On the origin of hypersthene chondrites: Ages and shock effects of black chondrites
journal, January 1967

A quasi-simple ablation model for large meteorite entry: theory vs observations
journal, May 1979

Argon diffusion in pyroxenes: Implications for thermochronometry and mantle degassing
journal, April 2011

Pb-isotopic evidence for an early, enriched crust on Mars
journal, January 2015

A Noachian source region for the “Black Beauty” meteorite, and a source lithology for Mars surface hydrated dust?
journal, October 2015

A new approach to cosmogenic corrections in 40Ar/39Ar chronometry: Implications for the ages of Martian meteorites
journal, August 2016

Launch of martian meteorites in oblique impacts
journal, September 2004