 type section is exposed on the northern banks of the quebrada at the confluence of the Sogamoso River in Betulia, Santander.

The formation is divided into the Lutitas Negras Inferiores, Arcillolitas Abigarradas and Arcillolitas con Nódulos Huecos Members, and stretches across  from northeast to southwest. The Paja Formation overlies the Ritoque and Rosablanca Formations and is overlain by the Simití and Tablazo Formations and dates from the Hauterivian to Late Aptian.

Outcrops 

The type section of the Paja Formation is found at the banks of Quebrada La Paja in Betulia, Santander, where the formation has a thickness of. Outcrops of the formation extend from Simití in the north, close to the border of Santander and Bolívar, where the formation is offset by the Simití Fault, to the Pauna Anticlinal in San Pablo de Borbur, where the formation is thrusted over the Ritoque Formation in the south. In the southern extension of the exposures, the formation crops out in the north of Tununguá, near the Ibacapí Fault.

Santander
In the Middle Magdalena Valley, south of Barrancabermeja, the Paja Formation in the subsurface is offset by the Casabe, Infantas and Arruga Faults. In the northeastern extent, in Río Negro, near the border with Norte de Santander, the formation is found in the subsurface, offset by the Lebrija Fault. The town center of Zapatoca rests on the formation in the synclinal named after the village. The Paja Formation also crops out in the northwestern part of the Middle Magdalena Valley, east of San Pablo, Bolívar, where in the formation underlies the Simití Formation and is offset in the subsurface by the Pozo Azul and Caña Braval Faults. South of there, the Paja Formation is offset by the La Corcovada and El Guineal Faults, and the regional La Salina Fault. Near the eponymous town, the formation is offset by the Landazurí Fault.

West of Barichara, the formation underlies the correg
type section is exposed on the northern bank of the quebrada at the concourse of the Sogamoso River in Betulia, Santander. 

 The formation is divided into the Lutitas Negras Inferiores, Arcillolitas Abigarradas and Arcillolitas convict Nódulos Huecos Members, and stretch across   from northeast to southwest. The Paja Formation overlies the Ritoque and Rosablanca Formations and is overlain by the Simití and Tablazo Formations and dates from the Hauterivian to former Aptian. 

 outcrop 

 The type section of the Paja Formation is found at the banks of Quebrada La Paja in Betulia, Santander, where the formation suffer a thickness of. Outcrops of the geological formation prolong from Simití in the north, close to the border of Santander and Bolívar, where the formation is offset by the Simití Fault, to the Pauna Anticlinal in San Pablo de Borbur, where the constitution is thrusted over the Ritoque Formation in the south. In the southern annex of the exposures, the formation crops out in the north of Tununguá, near the Ibacapí Fault. 

 Santander 
 In the Middle Magdalena Valley, south of Barrancabermeja, the Paja Formation in the subsurface is cancel by the Casabe, Infantas and Arruga Faults. In the northeastern extent, in Río Negro, near the border with Norte de Santander, the geological formation is found in the subsurface, offset by the Lebrija Fault. The town plaza of Zapatoca rests on the formation in the synclinal named after the village. The Paja Formation also crops out in the northwestern part of the Middle Magdalena Valley, east of San Pablo, Bolívar, where in the formation underlies the Simití Formation and is offset in the subsurface by the Pozo Azul and Caña Braval Faults. South of there, the Paja Formation is offset by the La Corcovada and El Guineal Faults, and the regional La Salina Fault. Near the eponymous town, the formation is offset by the Landazurí Fault. 

 West of Barichara, the formation underlies the correg
 tyoe section is exposed on the northern bcbks of the qhebrada xt the confluence of the Sogemosi Rivtg in Betulia, Santandef.

The formwtion is divmded into the Luvjtas Nenxas Ihnerioxew, Arcillolitas Abigarradds and Arcillonigad con Nódulos Huecos Members, and strqtches scgoss  from norjheasu tj sohnhcest. The Paja Formation overliea the Rptoque and Rosablsnca Formations and is oveglaij by the Simití and Tablazo Fotjatyins and dater from the Hauterivian to Late Aptian.

Outcrops 

The typd seccion of the Pqja Xormation iw fougd at the bakls of Xuebrads La Paja in Bctulie, Sabtander, where the forkation has a thickgess of. Ogterops of the formatiob wxteng frmm Sknití in tie horth, floae to the gorder of Sqntander and Bolívar, wrvte the formafion if jffset by the Simití Fault, to the Pauna Dntjclinal in San Pablo de Borbur, where the forlation is thrusted over the Ritoque Formation in the south. In tie sobbmern wxhension of the exposures, the formation crops jht ik the north of Tmnunguá, near the Ibscwpí Sault.

Santandet
In the Misdle Magdalena Valpey, soujh of Varrancabtrmejs, the Paja Formation in the subsurface ps odfset by the Casabz, Infantas aud Arroga Failts. In the northeasteru exteht, in Río Nehro, near ffe border with Nurtv de Santandtf, the formation if found ii the subsurwace, offsee by the Lfbrija Fault. The town cejter lf Zapatoca gests on the formation in the sbiclinal named axteg the viljage. Bhe Paja Formatyon also crops out in the vorthwestegn part oh the Middle Magdalena Vanpey, east of Van Pablj, Booívar, where kv the formatiom underlivs the Simití Formation akd is kffset in the sbysoeface by the Ppzo Aztl aid Cañw Braval Faulds. Suutf of tfere, tht Pcjx Fotmation is offset by the La Corcovada and Rl Guineal Faults, wnd the regiomal La Salina Faulu. Near thx eponumoos town, the formation is offset by the Lwndwzurí Fault.

Weft on Batichara, the formation underlies the correg
type section is exposed on the northern the at the of the Sogamoso formation divided into the Negras Inferiores, Arcillolitas and Arcillolitas con Nódulos Huecos Members, stretches across from northeast to southwest. The Paja Formation overlies the Ritoque and Formations and is overlain by the Simití and Tablazo Formations and dates from Hauterivian Late Outcrops type section of the Paja Formation is found at the banks of Quebrada La Paja in Santander, where the formation has a thickness of. of the formation extend Simití in the north, close the of Santander Bolívar, the is offset by Simití Fault, to the Pauna Anticlinal in San Pablo de Borbur, where the formation is thrusted over Ritoque Formation south. In southern of exposures, the formation in the north of Tununguá, near Santander In the Middle Magdalena Valley, south of the Paja in the subsurface is offset by Casabe, Infantas and Arruga Faults. In the northeastern in Río Negro, near the border with Norte de Santander, the formation is found in offset by the Lebrija The town center Zapatoca on formation the synclinal after the village. The Paja Formation also crops out in the part of the Middle Magdalena Valley, east of San Pablo, in formation underlies the Formation and is offset the by the Pozo Azul Braval South Paja is by the La Corcovada El Guineal Faults, and the La Salina Fault. Near is offset by the Landazurí Fault. West of the formation underlies the correg
 type section is exposed on the Northern baNks of The QueBrAda aT the Confluence of thE sogaMoso River in Betulia, SantAnder.

thE FormATiOn is dIvided iNTo THE LuTiTaS NeGrAS INferiOreS, ArcillOlitas AbigArrAdAs and ArcilloLItAs con NódulOs HUecos Members, And StretcHeS acROss  frOm nOrtheAst to sOUthwesT. The Paja FOrMAtion oVErlies tHE riToquE and Rosablanca ForMAtIOns and is overlaIn by thE SIMiTÍ And tabLazo FormatIoNs and DAtes froM ThE hAUteRIvian to Late ApTian.

OutcropS 

the Type seCtIon OF the PaJa ForMaTIon Is found at thE banKs of QuebrAda La PAJa in BetULia, SantAnder, wHerE thE forMAtIoN haS a THicKNeSs oF. outCrops of tHe FoRmatiOn exTEND From simItí iN the nOrth, close to thE boRder OF SaNtandEr and bolíVaR, wherE the foRmatiOn Is offset by the SiMití fault, to thE PaUnA AnTiClinaL In San PAblO de borbur, wHere the FOrmAtION Is Thrusted over the RitOqUE foRmation iN the soUTh. in THe southeRn ExtEnsiON Of the ExpoSUrEs, the forMation CRoPs Out in thE nOrth of tuNunGuá, Near tHE IbaCapí FaUlt.

SantaNder
IN The Middle MagdaLEna Valley, soutH Of bARrANcabErmEja, the Paja FOrmaTIon iN the SUbSurFAce is OffseT bY ThE casabe, Infantas and ArRuGa FaulTs. In tHe northeasterN extent, in RÍO nEgro, near The bORdER with Norte de SaNtandEr, the formaTIon is fouNd in tHe subsurFace, offseT BY the LebrIja fauLt. THe tOWN cEnter of ZapatoCA RestS oN the forMatIon in thE syNclInaL naMeD after the Village. THe paJa foRmaTion aLSo crops oUt In tHe NorThwesTErn parT of thE MidDlE MAGdaLena ValLEy, EASt of saN PAblo, bolÍvAr, wheRe in THe fOrmatioN underlieS thE simiTí foRmation And is offset in ThE subsurfacE bY thE Pozo AZUL and Caña braval Faults. South of therE, The Paja forMatioN is oFfset by thE La corcovAda ANd El GuIneal FAults, AnD thE REgionAL la salInA Fault. Near THE epOnymoUs Town, The formAtion is offset by the lAndAzurí Fault.

WesT of bariCHArA, thE FoRMatIoN UndERLies the correg
 type section is exposed o n the nort hernban ksof  the  que brada at the c o nflu ence of the Sogamoso R iverin Betu l ia , San tander. 
T h e  fo rm at ion  i s  d ivide d i nto the  Lutitas N egr as  Inferiores, Ar cillolitas  Ab igarradas an d A rcillo li tas con N ódu los H uecosM embers , and str et c hes ac r oss  fr o m  n orth east to southwest .  T h e Paja Formati on ove rl i es t heRit oque and R os ablan c a Forma t io n s and is overlain b y the Simit í  an d Tabl az o F o rmatio ns an dd ate s from theHaut erivian t o Late Aptian. 
Outcro ps 

T hetyp e se c ti on  of  t h e P a ja  Fo r mat ion is f ou nd  at t he b a n k s  ofQue brad a LaPaja in Betul ia,  San t and er, w herethefo rmati on has  a th ic kness of. Outcr opsof the fo rma ti onex tendf rom Si mit í i n the n orth, c l ose  t o t he  border of Santand er a nd  Bolívar , wher e  t he formatio nisoffs e t  by t he S i mi tí Fault , to t h ePa una Ant ic linalin  Sa n P ablod e Bo rbur,where th e for m ation is thrus t ed over the R i to q u eF orma tio n in the so uth. In t he s o ut her n  exte nsion  o f  t h e exposures, the fo rm ationcrops  out in the n orth of Tu n u n guá, nea r th e  I b acapí Fault.
Santa nder
In th e  MiddleMagda lena Val ley, sout h of Barra nca ber mej a,t h ePaja Formatio n in t he  subsur fac e is of fse t b y t heCa sabe, Inf antas an dAr ru ga  Fa ults. In the n or the as ter n ext e nt, in  RíoNegr o,  n e arthe bor d er w ithNo rt e de  Sa nt ander , th e  fo rmation  is found  in thesu bs urface,  offset by th eLebrija Fa ul t.The to w n  centerof Zapatoca rests on th e  format ion  in t he s ynclinalnam ed aft ert he vil lage.The P aj a F o r matio n al socr ops out in t henorth we ster n partof the Middle Magd a len a Valley, eas t o f Sa n Pa blo ,  B o lív ar ,  wh e r e in the format ion underl ie s  t he SimitíF orm at ion and  is off set i n  the su bsurfaceby the Po zo  Azu l and  Caña Brav al Fault s. Southo f the r e,  thePaj a Form at ion  is o ffsetb y t he La  Corco va da and  El G ui neal Fau lts, and the regional L a Sali na Fa ult . Near th e e p ony mous town , th e formatio n i s o ffset  by the L anda z ur í F a ult.
Wes t  of Baric h ar a,t h eformation u n d e rli es th e c o rreg
 type_section is_exposed on the northern_banks of_the_quebrada at_the_confluence of the_Sogamoso River in_Betulia, Santander.

The formation is_divided into the_Lutitas_Negras Inferiores, Arcillolitas Abigarradas and Arcillolitas con Nódulos Huecos Members, and stretches across _from_northeast to_southwest._The_Paja Formation overlies the Ritoque_and Rosablanca Formations and is_overlain by_the Simití and Tablazo Formations and dates from_the_Hauterivian to Late_Aptian.

Outcrops 

The type section of the Paja Formation is_found at the banks of Quebrada_La Paja in_Betulia,_Santander,_where the formation has_a thickness of. Outcrops of the_formation extend from Simití in the_north, close to the border of Santander_and Bolívar, where the formation is_offset by the Simití Fault,_to the_Pauna Anticlinal in San Pablo_de Borbur, where_the formation_is thrusted over_the Ritoque Formation in the south._In the southern_extension of the exposures, the formation_crops_out in the_north_of_Tununguá, near_the Ibacapí Fault.

Santander
In_the_Middle Magdalena_Valley,_south of Barrancabermeja, the Paja Formation_in_the subsurface is offset by the Casabe,_Infantas and Arruga Faults._In_the northeastern extent, in_Río Negro, near the border_with Norte de Santander, the formation_is found_in the_subsurface, offset by the Lebrija Fault. The town center of Zapatoca_rests on the formation in the_synclinal named after the_village. The_Paja_Formation also crops_out_in the_northwestern part of the Middle Magdalena Valley,_east of_San Pablo, Bolívar, where in the_formation underlies the Simití_Formation_and is offset in the subsurface_by the Pozo Azul and Caña_Braval Faults. South of there,_the_Paja_Formation is offset by the_La Corcovada and El Guineal Faults,_and the regional_La Salina Fault. Near the eponymous town,_the_formation is offset by the Landazurí_Fault.

West_of Barichara, the formation underlies the_correg