ODP 1260¶
ODP Site 1260, drilled during Leg 207 on the Demerara Rise in the tropical western Atlantic, recovered an Eocene cyclic sedimentary sequence (Erbacher et al., 2004). The stratigraphy is well constrained by biostratigraphic and magnetostratigraphic data (Erbacher et al., 2004; Suganuma & Ogg, 2006; Edgar et al., 2007). High-resolution XRF core scanning data, particularly Fe intensity, were produced for cyclostratigraphy by Westerhold & Röhl (2013). The record exhibits a strong precession signal modulated by eccentricity, making it ideal for eccentricity reconstruction. This study focuses on the 42–44 Ma interval (magnetochrons C18r–C20r), where different eccentricity solutions begin to show slight divergence.
Files in the data Folder¶
ODP1260.txt: Data of the ODP 1260 site.
ggge20293-sup-0011-suppinfo06.txt: Age model data from <ADD DESCRIPTION>.
La2010d_ecc3L.txt: Astronomical solution data (eccentricity component).
Execute the Example¶
Note
The folder examples has to bee in the same directory as the AstroGeoFit_tool.py file. If not, this will not work.
To run the example, open a terminal in the AstroGeoFit folder. Once this is open execute the following
python AstroGeoFit_tool.py --odp_1260
This command will execute the significance test, the genetic algorithm fitting, the MCMC, and the MCMC weights calculation.
If you only want to run specific components (e.g., the genetic algorithm fitting and the MCMC), you can use:
python AstroGeoFit_tool.py --odp_1260 -fit -mcmc
The full list of execution options can be found in AstroGeoFit Script Execution
Visualization of the Results¶
To visualize the results, you can use the two Jupyter notebooks provided. To obtain the results of the ODP_1260 data, just modify the variable configuration_file_path in the following way:
configuration_file_path = "odp_1260"
And then the visualization notebook will be ready to be executed.
For a detailed guide on using the notebooks and interpreting the figures, please refer to Visualization of the Results Guide.