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straints from de tri tal tour ma line. Geol. Quart., 56 (2): 315–332, doi: 10.7306/gq.1024 Up per Cre ta ceous quartz arenites that fill the North Sudetic Synclinorium on the north ern pe riph ery of the Variscan Bo he mian Mas sif show high compositional but low tex tural ma tu rity. They have been in ter preted for years as de rived largely from nearby gran ite plutons, i.e. as first-cy cle sed i ments. A dif fer ent prov e nance was re vealed on the ba sis of a com bined light and heavy min eral anal y sis, and par tic-u larly a de tri tal tour ma line study, given that tour ma line is a sen si tive in di ca tor of gra nitic/meta mor phic/sed i men tary (multi-re cy cling) or i gin. Cenomanian, Turonian, Coniacian and Santonian sand stones con tain abun dant an gu lar tour ma line grains, to gether with zir con and rutile, and subordinately staurolite, gar net, ana tase, kyan ite, sillimanite and monazite. The suc ces sive – Cenomanian to Santonian – tour ma line pop u la tions are sim i lar with re gard to shape, col our and chem i cal com po si tion. The lat ter points un am big u ously to var i ous meta mor phic rocks with a pre dom i nant group of Al-rich metapelites (Al-rich, F-poor dravite). It is con cluded that, in the Late Cre ta-ceous, large Sudetic gran ite plutons such as the Karkonosze and Strzegom–Sobótka mas sifs were not ex posed but were bur ied un der a thick siliciclastic cover. These re sults cou pled with pub lished ap a tite fis sion-track data from the gra nitic Karkonosze Pluton and the gneissic/migmatitic Góry Sowie Mas sif re veal that Late Cre ta ceous quartz arenites of the North Sudetic Synclinorium re flect grad ual ex-hu ma tion of the sur round ing mas sifs, but do not re cord the fi nal ex po sure of crys tal line rocks. Since the lat est Turonian, this ex hu ma tion cor re sponded to the Late Cre ta ceous in ver sion ep i sode in Cen tral Eu rope. The tex tural im ma tu rity of Up per Cre ta ceous sand stones i

Provenance of Upper Cretaceous quartz-rich sandstones from the North Sudetic Synclinorium, SW Poland: constraints from detrital tourmaline