CONTENTS PaGE TRSREN EES Seo wey ER IG TNT oh eS nt pt No eran tk ORE oP Ue arr ix CHAPTER I FETE ETO GUC WOT Sects cathe sta er pekeh et ce sae oleh Pea aoe eS tatoos wg a RUN 1 WO CR MONTANA CCESRIDIMb yer stearate eee en ee ENR fa) occ y cade 1 ravelewithin thesmap-areas. see hoe hae er gree eh cheats 1 GeOlogicalkworks sem cre ys ote Sree nna een a ren eee Teen eI 2 INCKNOWIEd BMEM tera rae EA eee ee ee Se cata 2 ISM ARNsey es oh ca OG en ES BOs On LOGE ROE e eR RU oe Sore oi Ome 3 CHAPTER II Generalicharacterjon theres sscys eet coe eto ea oa ee ee 7 PROPOR AD NY fees vaca gag Seth hs ae PR St cm eeu ST AIe SEES OE aR Re 7 DUNES SEE Bae eee eela Gis Sao eee S Seemed Seach hea CR on ine 7 (CUT SSGHS RAS re Re ee cen es ee me WR RU RE a Ger a ae ie a ieee at ee 8 SOT Leeper eho rar ey cao tere See PAR Ny etn SE AeR NAT ORS RMR oo Sa, 9 UN OT Sapa ipee ae ee as Pesca PAE orate ee rete gin se AUT MRS aS, 10 TOFD Teepe cer peo pene BE Seat a a RN a a Pe cS cal i 11 Vira ac oF U2 Val SIS 5 ee Go A eae Oy coat ER Se oes Lh hc ior 12 CHAPTER III phy siographicidevelopmentss ene re Sens ce ne ate ee et anid sands 13 Géneralistatemen topes eee ee as WU te ie net sue sepm Sears ERMC Eos gr 13 Character of the pre-Glacial land surface................. 0.0. c cece eee eee 13 (GISCYA TION Rs sey ese Fer ee ds as iy pean g he Nee RG ste a 14 Generalistatementes tee air a bce eds eats ee anes Ses 14 he; Cordilleransice-sheet nace mee ee ae ee eR ee eas aa 14 Walleyzandemountain: glaciationmes: rire e en hee are ce 15 Depositionyby.1Ce sete k rset een hee tk tet Aiea eR cpr onto a 17 Streamvachioni nn ease cre ee Sahay a eas Ree eke Noe Reese er Bee 18 Generalistatementisn. sche eee een tle oe ee oe a, 18 DP) PAIN See DAN Lead eit eras ele ee ee eh et NC ee ee ONO Sh Sara 19 SwannelluRivericiv ns eos cee ee reg cece tee ee RE 19 Osilinkka Rivers ccc ee ila is oa 20 Glacio=fuvaalideposits sree tacts ccs ere es ee ee a 22 PP rOSTLACELOM Sree ee eA a eee Le ee eS 23 pHelsenmeenand stalushens oe.qicas eee re Cee ae rene ces Sik 23 Rockiglaciers .cccsa cs eee ne ae a ea cee a acre as 24 Soli Cti omer eee ae ea ae ec ee ag, ocs 29 CHAPTER IV Gencraligeologysie snot ee fn SEO RR ae Dee CR Se ua eae Nei ee aes Sees 30 Summanryestatemen tyes so ek MRA AR CD CATT aha ee ee en eT OO 30 RAD erOleOrMaAlONss yank see eae Be ee ree at ene = 31 eras hig erOUp erie eee le eae a ce Meter Me reer a eee Nee a, 33 INamerandsaistrilou toms ee ee ee ere ere eer 33 Tai thol omy ete ase Roa eee rete: Cal ae, Ree Ae ee eat Tots 34 General statemen tives cee ses love Salatoa toe 34 Rocksun the wenakihi Ran gens..c5 2s: +20 os eee eee en 36 Rocks in the Chase Mountain area.................0 cee ee eee 37 iRocksun-the IngenikasRangen. ect see es a oe 39 RocksinetherbutlersRan ges: - nee. cece es ees