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Earth Institute Research Projects

A M-Sequence Geomagnetic Polarity Time Scale that Minimizes Global Spreading Rate Variations and Incorporates Cyclostratigraphic Information

Lead PI: Dr. Alberto Malinverno

Unit Affiliation: Marine Geology & Geophysics, Lamont-Doherty Earth Observatory (LDEO)

July 2009 - June 2013
Inactive
Global ; Lamont Doherty Earth Observatory (LDEO)
Project Type: Research

DESCRIPTION: The project will improve the M-sequence geomagnetic polarity time scale by: 1) using Monte Carlo to generate a geomagnetic polarity time scale that results in minimal spreading rate fluctuations over multiple spreading centers; and 2) using magnetic polarity chron durations estimated from cyclostratigraphic studies to calibrate and constrain the geomagnetic polarity time scale.

OUTCOMES: Data has been assembled, a Monte Carlo algorithm developed, and Monte Carlo code run numerous times. Results from the M-sequence have been presented and a NFE given to complete publication of them. One journal article published and one one-time publication.

SPONSOR:

National Science Foundation (NSF)

ORIGINATING SPONSOR:

National Science Foundation

FUNDED AMOUNT:

$97,368

RESEARCH TEAM:

Jordan Hildebrandt, Masako Tominaga, James E. T. Channell

EXTERNAL COLLABORATORS:

Woods Hole Oceanographic Institution, University of Florida

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=0926306&HistoricalAwards=false

PUBLICATIONS:

Malinverno, A., Hildebrandt, J., Tominaga, M., & Channell, J. E. T. (2012). M-sequence geomagnetic polarity time scale (MHTC12) that steadies global spreading rates and incorporates astrochronology constraints. J. Geophys. Res., B06104, doi:06110.01029/02012JB009260.

KEYWORDS

seismology geology and tectonics magnetic anomalies orbital cycle stratigraphy geomagnetic polarity time scales geochronology