Cross stmrificurion d ip di recrions data distributcd ulon g lhe o utcrop nrea 01' the Pirambóiu eolian depositiona l syste m (Pe rmian und/ 0 1' Tri assic 01' Paran á Busin ). in lhe sta res of S ão Paulo und Paraná. South Bruz il, were g roupe d accordin g to strutig raphic inter val.gcog ruphic position and depositiona l fuc ies criler ia. Pal eo winds and subaq uo us pal cocurrents di rections we rc es tima ted from eo lian and subaqucous Icoastal and/or fluvial ) facics data. thru ugh statistical ana lysis. Thc gcogruphic distribution o f thesc paleocurrents and palcowiuds dircctions. d ur ing lhe dc vclopm em 01' lhe Pirum bóia systcm. is d isc usscd iu terms 01' prove narce und paleogeogruph y, includ iug aspcct s 01' utmo xphcric circ ulat ion und relief T he pale o wind patt ern sho ws a co nve rgcn cc zu ne. in the S ta te of Purun á. charactcrizcd by colian inll ux from N W uud NE. in the nonhcm nrea. and tro m S W. iu the southcm a rca , Du ring the developmcm of Piralllhó ia lkpu sil iulIal xystem. (his zu ne migrutcx from lhe central lO lhe south-ccntrnl portion n f the Paraná Stntc. Abour lhe subaq ueo us fucies for lhe lo wcr Pirambóia depositiona l systc m. the pnleocu rrents cx hibit pro ve nan ce from NE in the so uthwest of S ão Pau lo S tate und north of Paran á State . Bidircc tion al palcocurren ts (NNE-SS W) are o bserved in the ce ntral-custem arca o f São Paulo St ate . Fo r lhe up pc r Piturnb óia dep osition ul system . lhe paleocurrcn ts foun d are from SE in thc northcrn S âo Paulo S tute. an d tnun NE nnd NNE in the cen tra l und so utheru arcas o f'Purun á State. Pale ocurrcn ts wit h high dispersion , wit ho ut a main dip di rec tio n. wcrc obscrved in thc ccn trul -castem ponion of S ão Pa ulo und no rthcrn Pa raná. T he ob scrved pal eowiud pa ttern rctl cc ts air mass convcrgcnce. in g lo ba l or regio nal scale of atrnosp her ic circ ulatio n. ln thc regio na l scale, this con vergencc wo uld bc relat cd to blockade cxcttc d hy a gcogrup hic burricr iII Paraná. w hic h actcd as an o hstuclc to lhe so uthcm winds. in ilx north flnnk. an d lo thc northcru wind.... iII ilS scuuhem tlunks. Th e coincidenc c bctwccn lhe zo nc wit h rcvcrsa l 01' pa lcowi nds and s ubaq uo us pa leoc urren ts audthc arc a with couccnnut ion 01' rud acco us fuc ies und w ith thiuning of the stratigraph ic un it are sugges tive of the ex iste nce of structural hig hs intcmall y to the b
The tectono-sedimentary evolution of the Itararé Subgroup (Late Paleozoic) in the southern flank of the Ponta Grossa arch, States of Santa Catarina and Paraná, Brazil, is interpreted through stratigraphic analysis of outcropping beds. Its evolution seems to have been influenced by faulting causing rising and falling of the arch. The section analyzed runs some 50 km SE-NW, from Mafra (SC)-Rio Negro (PR) to Lapa (PR) and includes about 700 m thickness of glacio-clastic beds assigned to the Campo do Tenente and Mafra formations.
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