Bimodal volcanism Bimodal volcanism Bimodal volcanism is the eruption of both mafic and felsic lavas from a single volcanic centre with little or no lavas of intermediate composition. This type of volcanism is normally associated with areas of extensional tectonics, particularly rifts. Most occurrences of bimodal volcanism are associated with thinning of the crust and the presence of such rocks in metamorphic sequences has been used to provide evidence for past rifting events. Most examples come from areas of active continental rifting such as the Basin and Range Province. Bimodal volcanism has also been described from areas of transtension, the early phases
All-Ireland Intermediate Hurling Championship All-Ireland Intermediate Hurling Championship The GAA Hurling Intermediate All-Ireland Championship, known simply as the All-Ireland Intermediate Championship, is an annual inter-county hurling competition organised by the Gaelic Athletic Association (GAA). Effectively contested by the second string teams of the top inter-county hurling sides in Ireland, the tournament has taken place every year since 1997—having originally been run between 1961 and 1973. The final, currently held in July, serves as the culmination of a series of games played during the early summer, and the results determine which team receives the Michael Cusack Cup. The All-Ireland Championship has always been played on