Catalog of all significant earthquakes since 1900?
Okay so I got the data from
https://earthquake.usgs.gov

Since the website only allows to get 20k records at a time I made a little python script that downloads data for each month.

import os
import requests

for x in range(1900,2016):
    for y in range(1,13):
        url='https://earthquake.usgs.gov/fdsnws/event/1/query.csv?starttime='+str(x)+'-'+str(y)+'-31%2023:59:59&amp;endtime='+str(x)+'-'+ str(y+1) +'-31%2023:59:59&amp;minmagnitude=2.5&amp;orderby=time'
        print(url)
        response = requests.get(url)
        with open(os.path.join("C:/Users/kristjag/OneDrive/delo/potresi", "potresi_"+str(x)+"_"+str(y)+".csv"), 'wb') as f:
            f.write(response.content)


Code above take some time to finish but when completed you get earthquake data for every month from 1900-2016