oe The section exposed about a mile above the waterfalls north of Pink Mountain.has.a calculated thickness of 900 feet, but as it is broken.by.an.east-dipping fault.of undetermined displace- ment, its true thickness.may be considerably greater. West of Chicken Creek. 835 feet.of beds were measured. The lowest bed is believed to be within 200 feet of the base of the group. Overlying this section are.231 feet of altornating sandstone and shale beds that are considered transitional into the overlying marine shales and are included with the.overlying formation. The western section at the upper waterfalls has a calculated thickness of 1,620 feet. Such variations in thickness may represent a thickening in the group from.east.to west. .. Na The following section was measured along Sikanni Chief River west of Chicken Creek: Top of Section i ! Feet Coal and carbonaceous Shale seceseceeseresccvessvcvccess Ovd Sandstone, dark grey, hard, medium—grainedessecceecesee Ded COON ee Velehetelaleteteleral alah oleveielelersielerevete aceveleveicletelcheteleiels alatelalctevevetclete 0.7 Sandstone, dark grey, fine-grained ececcersseccsccvecccee 200 Shale, dark groy, Pissilececcecasceaceccsscccsccccvesee G00 Con envelaile: clatersicistetetelelateisio clelelalelalelstalelererateleleteletelereietevarelaleleteielsletun OleO Sandstone, dark. greyecccescccccccsesercccessecvcvaccesce 9.0 Shale, dark greyecsscesocccccecccccccccceccecssccesesve 200 Sandstone, dark grey, fine-grained. ssesecoeeceereccees 048 Ob Le sMdarlckor oy Aha SSA LCs uiete ele lets slelelelalctelelel eeitiela/sicisievers/elitleO Sandstone, dark grey, fine-grained, hard... ceccescesece 1.0 Shale, dark greys NDEAGSAis level ele oie clele cibiolaicisio.tislclele is eieielein e'e'e) 110/00, Sandstone, grey, medium-grained; ripple-marks...seccses 808 Shale, dank grey's; PAssile vcwslecccvcctccwccccccecesnces Oob Coal-.and canbona coos) shailer. cise cesle cielscccecescececee Od Sandstone, dark grey, FANE =2TAINEH ceccccevecvccccccesves 4.5 Shale, .dark ELCYV cece ecrercrcccscvcersesersessesseseseoses 1.0 Sandstone, dark grey, beddedsescscescccrecsccsecssesses 000 Shale, dark ELCV cee seveceosesoevevsasceceserseseses vere 1.0 MHAMSD lA Glas Can ONAL CEOUSislete sl aveleleleisis elcielclele clelermeleloieielcisiel vled ConceaLedisnlersrely ciclaje'sia sielsioieie’sicicisivieleslele'e/s.slsieieloisieleiielewleleie e900 Sandstone, light grey, fine-grained...ccccccceccsccceees 10.0 Conglomerate, pehbles of chert, quartzite, and quartz.. 0.5 Sandstone, coarse; with scattered pebbleSesccecccecsees OLs0 Sandstone, dark sroy.|Pine=prajined ee 'sleecleciecicielsiclccesicice) 00 00 Shale, dark greyrccecrcocvcscerccesccssusecseccsseccses Fe Sandstone, with scattered pebbles and lenses of CONGLOMCLATE socnecccersesevenerecvvcssericnesesenes 46 .0 COBEN ro ere taleraraiaveors’elalalete craleterei vale siviejisia cielstele’s cleloiateiotreieis’eisia 0.2 Sandstone, dark grey, fine-grained, bedded. ececresveee 11.0 Shale, dark greys LASSLLC oeveccacsevecccessscevessovece 5.0. Sandstone, dark grey, fine-grainedeccccccencccccsevcsee 2L00 Shale, dark grey, LASSILC..ccccovecsccvsccssscccscvcces 15.0 Sandstone, dark grey, BinO=pre inode sielela'scia's ocisievis's 6.8 eiele 15.0 Dhawesca rbOuaC COU eta lle clelelelciaiateleisintstetavaieracticitvirerciuaieiegte e's alnwrlicO andstone, dark grey, fine-grained, beddedescessccccvce 4200 Shale, dark greys Deddediecramrcis crtels ares letelecshotereutbrelaelalsteierels 1.0 Sandstone, dark greys Pine=frained..ceccccccesscesesece 5 0 Shale, dark grey, interbedded with sandstoncessesseseee 11.0 Sandstone, grey, fine-grained, hardessceccccccecvsecese 409 Shale, dark srev wand nsaridy:| shalascleviseeale cis svisies sl cisieeuoed Sandstone, brownish grey, hard, fine-grained, bedded... 20.0 Sneiie sda niguemoy,Deddodssinliaie cls slviniucisletalsicteletstneleieinie iii O Sandstone, fine-grained, QUEGCZUGLC seieeisieesive vivceicice eset bel Shale, dark grey, Dedded .ccccccevccecccvccrerevescccece 6.5 Sandstone, fine-grained, beddedssscrccccecerervecseesecs 12.0