Supplementary files for Gernon et al. (2023) Rift-induced disruption of cratonic keels drives kimberlite volcanism

Supplementary files for Gernon et al. (2023) Rift-induced disruption of cratonic keels drives kimberlite volcanism

This directory contains datasets, GIS files, Uninet model files and R scripts used to generate the figures in Gernon, T.M., Jones, S.M., Brune, S., Hincks, T.K., Palmer, M.R., Schumacher, J.C., Primiceri, R.M., Field, M., Griffin, W.L., O’Reilly, S.Y., Keir, D., Spencer, C.J., Merdith, A. & Glerum, A. Rift-induced disruption of cratonic keels drives kimberlite volcanism. Nature, doi: https://doi.org/10.1038/s41586-023-06193-3 (2023).

Contents:
GIS
COB_NAmerica.shp, COB_SAmerica.shp, COB_Africa.shp
Shapefiles for rifts in North America, South America and Africa with associated rift and breakup ages;
Combined_database_Kimberlites_Tappe_Brazil.shp  Kimberlite locations (lon/lat) with ages

input data files
1_Ga_area_perimeter_1000_0_1myr.csv
Plate area and perimiter estimates used to generate Fragmentation index, see
Merdith A.S. et al., 2021, https://doi.org/10.1016/j.earscirev.2020.103477
and Merdith A.S. et al., 2017 https://doi.org/10.1016/j.gr.2017.04.001

GoodwinPreservationCurve.csv
Surface preservation estimate (as a function of time) from Goodwin, A.M. 1996
https://doi.org/10.1016/B978-0-12-289770-2.X5000-6

Kimberlites_ages.csv
Kimberlite database from Tappe et al. 2018, https://doi.org/10.1016/j.epsl.2017.12.013

LIP_input.csv
Ages and extent of Large Igneous Provinces from Ernst, 2014, https://doi.org/10.1017/CBO9781139025300

output data files
UNINET_KimberliteCount_LIPstart_dFrag_5MyrRes.csv and UNINET_Past500Myr_KimberliteCount_LIPstart_dFrag_5MyrRes.csv
5 Myr aggregated time series for Uninet lag analysis

Symmetric_dFrag9Myr_alldataNA.csv
Time series (1 Myr resolution) for:
    Fragmentation (Frag);
    Rate of change of fragmentation (dFrag_9Myr), calculated over a moving interval t+/-4 Myr as a measure of breakup;
    Kimberlite count (Kimberlites);
    Kimberlite count corrected for preservation (see GoodwinPreservationCurve.csv above) (CorrKimberlites);
    Initiation of Large Igneous Provinces (LIPstart)

CLUSTER_sample_rates_Fig1e_ExFig4a.zip (large csv file)
Output from Migration_rate_estimates_with_uncertainty_MINLAG_and_MINDIST.r containing simulated estimates of migration rate, accounting for time, distance and model (rift association uncertainty) for Kimberlite clusters in N America, S America and Africa. This ouptut was used to generate Fig 1e and Extended Data Fig 4a in Gernon et al (2023)

Uninet files
UNINET_500Myr_5MryRes_dFrag9Myr_Kim
Emp_correl.txt, BN_correl.txt and Cond_correl.txt : Emprical, BN and Conditional rank correlations for Kimberlites and lagged dFrag (rate of change of fragmentation) using a 5 Myr resolution time series for the past 500 Myr.
CORRELATIONS_500Myr_5MryRes_dFrag9Myr_Kim.pdf and COND_CORR_500Myr_5MryRes_dFrag9Myr_Kim.pdf plots showing correlation v.s. lag
TEST_500Myr_5MryRes_dFrag9Myr_Kim.uninet Uninet model file used to estimate correlations

UNINET_1000Myr_5MryRes_LIPstartSum5Myr_dFrag9Myr
Emp_correl.txt, BN_correl.txt and Cond_correl.txt : Emprical, BN and Conditional rank correlations for dFrag (rate of change of fragmentation) and lagged values of LIPstart (initiation of Large Igneous Provinces) using a 5 Myr resolution time series for the past 1000 Myr.
COND_CORR_1000Myr_5MryRes_LIPstartSum5Myr_dFrag9Myr.pdf plot showing conditional correlation vs. lag
TEST_1000Myr_5MryRes_LIPstartSum5Myr_dFrag9Myr.uninet Uninet model file used to estimate correlations

Generate_Fig1b_ExtFig2_ExtFig6
R_fig1b_extended_fig2bcd.r
R script to generate Fig 1b and Extended Data Figs 2 and 6 for Gernon et al. (2023)
[ also includes generated figures and output data files ]

Generate_migration_rate_estimates
Migration_rate_estimates_with_uncertainty_MINLAG_and_MINDIST.r
R script to generate Fig 1e, and Extended Data Figs 4 and 5 for Gernon et al. (2023)
[ also includes generated figures and output data files ]
Note: UNINET_KimberliteCount_LIPstart_dFrag_5MyrRes.csv and UNINET_Past500Myr_KimberliteCount_LIPstart_dFrag_5MyrRes.csv are inputs to the Uninet models described above.