K
Karen R. Stockstill-Cahill
Researcher at Johns Hopkins University Applied Physics Laboratory
Publications - 33
Citations - 1266
Karen R. Stockstill-Cahill is an academic researcher from Johns Hopkins University Applied Physics Laboratory. The author has contributed to research in topics: Mercury (element) & Chondrite. The author has an hindex of 12, co-authored 31 publications receiving 1083 citations. Previous affiliations of Karen R. Stockstill-Cahill include National Museum of Natural History & Smithsonian Institution.
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Journal ArticleDOI
Radioactive Elements on Mercury’s Surface from MESSENGER: Implications for the Planet’s Formation and Evolution
Patrick N. Peplowski,Larry G. Evans,Steven A. Hauck,Timothy J. McCoy,William V. Boynton,J. J. Gillis-Davis,Denton S. Ebel,John O. Goldsten,D. K. Hamara,David J. Lawrence,Ralph L. McNutt,Larry R. Nittler,Sean C. Solomon,Edgar A. Rhodes,Ann L. Sprague,R. D. Starr,Karen R. Stockstill-Cahill +16 more
TL;DR: Gamma-ray emission from the surface of Mercury indicates that the planet accreted from relatively volatile-enriched material, consistent with widespread volcanism shortly after the end of late heavy bombardment 3.8 billion years ago and limited, isolated volcanic activity since.
Journal ArticleDOI
Major-Element Abundances on the Surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer
Larry G. Evans,Patrick N. Peplowski,Edgar A. Rhodes,David J. Lawrence,Timothy J. McCoy,Larry R. Nittler,Sean C. Solomon,Sean C. Solomon,Ann L. Sprague,Karen R. Stockstill-Cahill,R. D. Starr,Shoshana Z. Weider,William V. Boynton,D. K. Hamara,John O. Goldsten +14 more
TL;DR: In this paper, the gamma-ray and X-ray measurements obtained by the MESSENGER spacecraft have been analyzed to determine the abundances of the major elements Al, Ca, S, Fe, and Na on the surface of Mercury.
Journal ArticleDOI
Chemical heterogeneity on Mercury's surface revealed by the MESSENGER X-Ray Spectrometer
Shoshana Z. Weider,Larry R. Nittler,R. Starr,R. Starr,Timothy J. McCoy,Karen R. Stockstill-Cahill,Paul K. Byrne,Brett W. Denevi,James W. Head,Sean C. Solomon,Sean C. Solomon +10 more
TL;DR: In this paper, the analysis of 205 spatially resolved measurements of the surface composition of Mercury from MESSENGER's X-Ray Spectrometer is presented, and the surface footprints of these measurements are categorized according to geological terrain.
Chemical heterogeneity on Mercury's surface revealed by the MESSENGER X-Ray Spectrometer
Shoshana Z. Weider,Larry R. Nittler,R. Starr,R. Starr,Timothy J. McCoy,Karen R. Stockstill-Cahill,Paul K. Byrne,Brett W. Denevi,James W. Head,Sean C. Solomon,Sean C. Solomon +10 more
TL;DR: In this article, the analysis of 205 spatially resolved measurements of the surface composition of Mercury from MESSENGER's X-Ray Spectrometer is presented, and the surface footprints of these measurements are categorized according to geological terrain.
Journal ArticleDOI
Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer
Patrick N. Peplowski,David J. Lawrence,Edgar A. Rhodes,Ann L. Sprague,Timothy J. McCoy,Brett W. Denevi,Larry G. Evans,James W. Head,Larry R. Nittler,Sean C. Solomon,Sean C. Solomon,Karen R. Stockstill-Cahill,Shoshana Z. Weider +12 more
TL;DR: A technique for converting gamma-ray count rates measured by the Gamma-Ray Spectrometer on the MESSENGER spacecraft to spatially resolved maps of the gamma ray emission from the surface of Mercury is utilized to map the surface distributions of the elements Si, O, and K over the planet's northern hemisphere as mentioned in this paper.