Precessional pacing of early Proterozoic redox cycles - Data Version 20

This file contains raw X-ray fluorescence and line scan data of regular 'Knox cyclothem' alternations in two short intervals (J45de and J60d) of drill-core DD98SGP001. Core DD98SGP001 contains banded iron formation of the lower Paleoproterozoic Joffre Member of the Brockman Iron Formation and was drilled in 1998 at Silvergrass Peak (22 03'29.9''S, 116 50' 06.0''E) in the Hamersley Range, Western Australia; the core is currently stored at the Perth Core Library of the Geological Survey of Western Australia. The scanned interval J45de is from 289.05 - 290.26 m depth in the core (box 45, rows d and e) and contains cherty iron formation-type cyclothems. The scanned interval 60d is from 358.34 - 358.73 m depth in the core (box 60, row d) and contains shaley carbonate-type cyclothems.