Hi Maria,

In case you have not already come across it, I recommend you take a look at Ernst & Buchan (1997) and the references therein. They undertook a comprehensive collation of global dyke-swarm and corresponding LIP age data, in the context of plume-induced continental breakup.

Its an old-ish, but frequently cited piece of work, so I’m sure that a review of the paper’s citation list in Google Scholar will throw up any more recent studies of its type.

Hope this helps,

Regards

Graham

Ernst, Richard E., and Kenneth L. Buchan. "Giant radiating dyke swarms: their use in identifying pre-Mesozoic large igneous provinces and mantle plumes." Geophysical Monograph-American Geophysical Union 100 (1997): 297-334. (PDF available on Researchgate)