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1. An assessment of sanidine from the Fire Clay tonstein as a Carboniferous 40Ar/39Ar monitor standard and for inter-method comparison to U-Pb zircon geochronology

Machlus, Malka L.; Shea, Erin K.; Hemming, Sidney R.; Ramezani, Jahandar; Rasbury, E. Troy
2020
Articles
GeochemistryGeological timeRadioisotopes in geologyTonsteinsPaleozoic Geologic Period

2. A strategy for cross-calibrating U–Pb chronology and astrochronology of sedimentary sequences: An example from the Green River Formation, Wyoming, USA

Machlus, Malka L.; Ramezani, Jahandar; Bowring, Samuel A.; Hemming, Sidney R.; Tsukui, Kaori; Clyde, William C.
2015
Articles
GeologyGeological timeUranium-lead datingCyclostratigraphyEocene Geologic EpochZircon

3. Spectral Analysis of the Lower Eocene Wilkins Peak Member, Green River Formation, Wyoming: Support for Milankovitch Cyclicity

Machlus, Malka L.; Olsen, Paul E.; Christie-Blick, Nicholas; Hemming, Sidney R.
2008
Articles
Remote sensingGeology, StratigraphicGeomorphology

4. Eocene Calibration of Geomagnetic Polarity Time Scale Reevaluated: Evidence from the Green River Formation of Wyoming

Machlus, Malka L.; Hemming, Sidney R.; Olsen, Paul E.; Christie-Blick, Nicholas
2004
Articles
GeologyPaleoclimatologyGeochemistry