Table 1 List of data used for this study.

Bathymetry

https://www.gebco.net/

1

¹⁰

Teleseismic earthquake

https://www.usgs.gov/

2a

¹¹

Hydrothermal vents

https://doi.org/10.1594/PANGAEA.917894

2c

¹³

Drilling sites

https://www.iodp.org/resources/maps-and-kml-tools

2d

—

Crustal age

https://earthbyte.org/webdav/ftp/earthbyte/agegrid/2020/

3a

¹⁴

Spreading rate

https://earthbyte.org/webdav/ftp/earthbyte/agegrid/2020/

3b

¹⁴

Spreading direction

https://earthbyte.org/webdav/ftp/earthbyte/agegrid/2020/

3c

¹⁴

Spreading obliquity

https://earthbyte.org/webdav/ftp/earthbyte/agegrid/2020/

3d

¹⁴

Heat flow

https://doi.org/10.1029/2019GC008389

4 a

¹⁵

Sediment thickness

https://www.ngdc.noaa.gov/mgg/sedthick/

4b

¹⁶

Gravity anomaly

https://ftp.space.dtu.dk/pub/

4c

¹⁷

Magnetic anomaly

http://wdmam.org/

4d

¹⁸

Upper-mantle shear wave anomaly

http://perso.ens-lyon.fr/eric.debayle/

5

¹⁹

Upper-mantle partial melting content

http://ds.iris.edu/ds/products/emc-dbrd_nature2020/

5

²⁰

Plate boundaries

http://peterbird.name/oldFTP/PB2002/

5

¹²