Stephen E. Cox
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View article: U and Th zonation in apatite observed by synchrotron X-ray fluorescence tomography and implications for the (U–Th) ∕ He system
U and Th zonation in apatite observed by synchrotron X-ray fluorescence tomography and implications for the (U–Th) ∕ He system Open
Synchrotron X-ray fluorescence microtomography can non-destructively image the three-dimensional distribution of several trace elements in whole apatite crystals at the resolution of 1 µm3. This allows for precise determination of the phys…
View article: Multimethod dating of ice-rafted dropstones reveals hidden localized glacial erosion in Wilkes Subglacial Basin, Antarctica
Multimethod dating of ice-rafted dropstones reveals hidden localized glacial erosion in Wilkes Subglacial Basin, Antarctica Open
The Antarctic ice sheet blankets >99% of the continent and limits our ability to study how subglacial geology and topography have evolved through time. Ice-rafted dropstones derived from the Antarctic subglacial continental interior at …
View article: U and Th zonation in apatite observed by synchrotron X–ray fluorescence tomography and implications for the (U–Th)/He system
U and Th zonation in apatite observed by synchrotron X–ray fluorescence tomography and implications for the (U–Th)/He system Open
Synchrotron X–ray fluorescence microtomography can non-destructively image the three-dimensional distribution of several trace elements in whole apatite crystals at the scale of one µm3. This allows for precise determination of the physica…
View article: Woodend
Woodend Open
View article: Newton Plantation
Newton Plantation Open
View article: Geodynamic Evolution of the East African Superplume: Insights From Volcanism in the Western Turkana Basin
Geodynamic Evolution of the East African Superplume: Insights From Volcanism in the Western Turkana Basin Open
There is a consensus that volcanism along the East African Rift System (EARS) is related to plume activities. However, because of our limited knowledge of the local lithospheric mantle, the dynamics of the plume are poorly constrained by m…
View article: Liquid solution centrifugation for safe, scalable, and efficient isotope separation
Liquid solution centrifugation for safe, scalable, and efficient isotope separation Open
A general method of separating isotopes by centrifuging dissolved chemical compounds in a liquid is introduced. This technique can be applied to almost all elements and leads to large separation factors. The method has been demonstrated in…
View article: Synchrotron Microanalytical Characterization and K/Ar Dating of the GL-O-1 Glauconite Reference Material at the Single Pellet Scale and Reassessment of the Age of Visually Mature Pellets
Synchrotron Microanalytical Characterization and K/Ar Dating of the GL-O-1 Glauconite Reference Material at the Single Pellet Scale and Reassessment of the Age of Visually Mature Pellets Open
The K/Ar chronology of glauconite pellets is a long-used method for directly dating marine sedimentary deposits. Many papers have explored the processes that form glauconite and the factors that lead to greater reliability in the ages. Alt…
View article: Short communication: Mechanism and prevention of irreversible trapping of atmospheric He during mineral crushing
Short communication: Mechanism and prevention of irreversible trapping of atmospheric He during mineral crushing Open
A pervasive challenge in noble gas geochemistry is to ensure that analytical techniques do not modify the composition of the noble gases in the samples. Noble gases are present in the atmosphere and are used in a number of manufacturing pr…
View article: Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA (Supporting Information)
Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA (Supporting Information) Open
Supporting datasets for Ronemus et al., "Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA" in review at Tectonics as of August 16, 2022. Dataset S1. Detail…
View article: Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA (Supporting Information)
Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA (Supporting Information) Open
Supporting datasets for Ronemus et al., "Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA" in review at Tectonics as of August 16, 2022. Dataset S1. Detail…
View article: Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA (Supporting Information)
Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA (Supporting Information) Open
Supporting datasets for Ronemus et al., "Orogens of Big Sky Country: Reconstructing the Deep-Time Tectonothermal History of the Beartooth Mountains, Montana and Wyoming, USA" in review at Tectonics as of August 16, 2022. Dataset S1. Detail…
View article: Dataset for Cox et al. (2022), "Short communication: Mechanism and prevention of irreversible trapping of atmospheric He during mineral crushing," Geochronology 2021-42
Dataset for Cox et al. (2022), "Short communication: Mechanism and prevention of irreversible trapping of atmospheric He during mineral crushing," Geochronology 2021-42 Open
Dataset for Cox, S. E., Miller, H. B. D., Hofmann, F., and Farley, K. A.: Short Communication: Mechanism and Prevention of Irreversible Trapping of Atmospheric He During Mineral Crushing, Geochronology, https://doi.org/10.5194/gchron-2021-…
View article: Dataset for Cox et al. (2022), "Short communication: Mechanism and prevention of irreversible trapping of atmospheric He during mineral crushing," Geochronology 2021-42
Dataset for Cox et al. (2022), "Short communication: Mechanism and prevention of irreversible trapping of atmospheric He during mineral crushing," Geochronology 2021-42 Open
Dataset for Cox, S. E., Miller, H. B. D., Hofmann, F., and Farley, K. A.: Short Communication: Mechanism and Prevention of Irreversible Trapping of Atmospheric He During Mineral Crushing, Geochronology, https://doi.org/10.5194/gchron-2021-…
View article: Reply on RC1
Reply on RC1 Open
Abstract. A pervasive challenge in noble gas geochemistry is to ensure that analytical techniques do not modify the composition of the noble gases in the samples. Noble gases are present in the atmosphere and are used in a number of manufa…
View article: Reply on RC2
Reply on RC2 Open
Abstract. A pervasive challenge in noble gas geochemistry is to ensure that analytical techniques do not modify the composition of the noble gases in the samples. Noble gases are present in the atmosphere and are used in a number of manufa…
View article: History of earthquakes along the creeping section of the San Andreas fault, California, USA
History of earthquakes along the creeping section of the San Andreas fault, California, USA Open
Creeping faults are difficult to assess for seismic hazard because they may participate in rupture even though they likely cannot nucleate large earthquakes. The creeping central section of the San Andreas fault in California (USA) has not…
View article: New Discovery of Oligocene Strata in the Topernawi Formation, Turkana County, Kenya
New Discovery of Oligocene Strata in the Topernawi Formation, Turkana County, Kenya Open
New field observations and 40 Ar/ 39 Ar geochronology reveal that the Topernawi Formation of the Ekitale Basin, northern Turkana Depression, Turkana County, Kenya was deposited entirely during the Oligocene between 29.7 ± 0.5 Ma and 29.24 …
View article: Short Communication: Mechanism and Prevention of Irreversible Trapping of Atmospheric He During Mineral Crushing
Short Communication: Mechanism and Prevention of Irreversible Trapping of Atmospheric He During Mineral Crushing Open
A pervasive challenge in noble gas geochemistry is to ensure that analytical techniques do not modify the composition of the noble gases in the samples. Noble gases are present in the atmosphere and are used in a number of manufacturing pr…
View article: Supplementary material to "Short Communication: Mechanism and Prevention of Irreversible Trapping of Atmospheric He During Mineral Crushing"
Supplementary material to "Short Communication: Mechanism and Prevention of Irreversible Trapping of Atmospheric He During Mineral Crushing" Open
Mass (g)Low T 4 He mol/g
View article: Creeping Closer: Clay Separation and X-ray Diffraction for Refined K/Ar Dating of Fault Motion on the Creeping Central Section of the San Andreas Fault
Creeping Closer: Clay Separation and X-ray Diffraction for Refined K/Ar Dating of Fault Motion on the Creeping Central Section of the San Andreas Fault Open
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]Creeping Closer: Clay Separation and X-ray Diffraction for Refined K/Ar Dating of Fault Motion on the Creeping Central Section of the S…
View article: U-Pb zircon geochronology of dropstones and IRD in the Amundsen Sea, applied to the question of bedrock provenance and Miocene-Pliocene ice sheet extent in West Antarctica
U-Pb zircon geochronology of dropstones and IRD in the Amundsen Sea, applied to the question of bedrock provenance and Miocene-Pliocene ice sheet extent in West Antarctica Open
<p>IODP Expedition 379 to the Amundsen Sea continental rise recovered latest Miocene-Holocene sediments from two sites on a drift in water depths >3900m. Sediments are dominated by clay and silty clay with coarser-grained interval…
View article: The Isotopx NGX and ATONA Faraday amplifiers
The Isotopx NGX and ATONA Faraday amplifiers Open
We installed the new Isotopx ATONA Faraday cup detector amplifiers on an Isotopx NGX mass spectrometer at Lamont-Doherty Earth Observatory in early 2018. The ATONA is a capacitive transimpedance amplifier, which differs from the traditiona…
View article: Raw dataset for publication 10.5194/gchron-2020-1
Raw dataset for publication 10.5194/gchron-2020-1 Open
Raw data used to generate figures and tables in doi:10.5194/gchron-2020-1 "The Isotopx NGX and the ATONA Faraday Amplifiers"
View article: Raw dataset for publication 10.5194/gchron-2020-1
Raw dataset for publication 10.5194/gchron-2020-1 Open
Raw data used to generate figures and tables in doi:10.5194/gchron-2020-1 "The Isotopx NGX and the ATONA Faraday Amplifiers"