Auxiliary material for Paper 2012JB009260



M-sequence geomagnetic polarity time scale that steadies global spreading rates and incorporates astrochronology constraints



Alberto Malinverno 

Lamont-Doherty Earth Observatory, Earth Institute at Columbia University, Palisades, New York, USA

Jordan Hildebrandt
Wittenberg University, Springfield, Ohio, USA

Masako Tominaga
Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA

James E. T. Channell
Department of Geological Sciences, University of Florida, Gainesville, Florida, USA


Malinverno, A., J. Hildebrandt, M. Tominaga, and J. E. T. Channell (2012), M-sequence geomagnetic polarity time scale (MHTC12) that steadies global spreading rates and incorporates astrochronology constraints, J. Geophys. Res., 117, B06104, doi:10.1029/2012JB009260.





Introduction


Tables S1 and S2 contain the two M-sequence geomagnetic polarity time scales obtained in this study. MHTC12 assumes an age of 121 Ma for the middle of CM0r, and MHTC12-125 an age of 125 Ma for the onset of CM0r (see discussion in the main text).



1. 2012jb009260-ts01.txt 
Geomagnetic polarity time scale MHTC12

1.1 Column "Chron", name of polarity chron

1.2 Column "End_age", chron end age (Ma)

1.3 Column "Age_sdev", uncertainty (standard deviation) of chron end age (Myr)

1.4 Column "Dur_sdev", uncertainty (standard deviation) of chron duration (Myr)



2. 2012jb009260-ts02.txt 
Geomagnetic polarity time scale MHTC12-125

2.1 Column "Chron", name of polarity chron

2.2 Column "End_age", chron end age (Ma)

2.3 Column "Age_sdev", uncertainty (standard deviation) of chron end age (Myr)

2.4 Column "Dur_sdev", uncertainty (standard deviation) of chron duration (Myr)