#Introduction. Bio by hashtags: #Geology (Leiden) ➤ #Hydrogeol. ➤ #MarineGeophysics ➤ #Tectonics ➤ #FractureZones (#Atlantic) ➤ #ReferencePublishing ➤ #SciencePublishing ➤ #NewsPublishing (briefly) ➤ #SciencePublishing (return; this time in UK) ➤ #NatureMagazine (briefly) ➤ #OpenAccessPublishing ➤ #Semantics (#Nanopublications) ➤ #Retirement ➤ More interests than seem to be able to be satisfied (i.a.: #Politics; #Arts; #Music; #Translation [of #CrimeNovels, EN➤NL, and #FamilyHistory, GER➤EN]).