ABSTRACT. A m o raina l sequence in south-west Yukon T e rritory, Canad a , r ecords a t least four m ajor. successivel y less ex tensive g lacia tions from ice fi elds in the St. Eli as M ounta ins south of the glaciated a rea.Th e N isling Mora in e Aan ks the K lo ndike P lateau in a belt I km . wide to a n a ltitude of 1, 040 m ., 1 2 km . n o rth-east of Snag . Th e n orth ernm ost lobe of this mora ine te rmin a tes at the junctio n of the Donj ek a nd White Ri vers, 120 km. from th e neares t source of ice, Klutla n G lacie r. I I km. north-east of Snag, the pro min e nt front of the Donjek M oraine lies 18 0 m . below th e front of th e N isling Mora ine. Th e north ernm ost lo b e of th e Donjek M ora ine termina tes 106 km . north of Klutl a n G lac ier a nd occupies th e lower courses of ca nyon s c ut into the Nisling Mora ine. T he front of the Snag Mora ine c rosses the White Rive r va lley 21 0 m . b e low the front of th e D onj ek M o ra ine a nd 96 km. north of Klutla n G lac ier . The T chawsa hmon M ora ine, 38 km . no rth-west of Klutla n Glacier, consists of a seri es of con centri c ridges, the oldes t of which impo und ed T ch awsahmon La ke.Prov isiona l correla tio ns sugges t tha t the N isling M ora in e is pre-Ill inoia n ; th e D onjek, Illin oia n ; the Snag, pre-classica l vVisconsin ; and the T ch a wsahmon, cla ssical Wisconsin. RESUME. Pleis /ocene geologie du T erritorie du rukon dll sud-ouest, Canada . Dans une su ccession d e m o ra in es clans le sud-oues t du T e rrito r ie du Yuko n (Cana da ), on reconna it a u moins qu atre stad es glac iaires p rin c ipaux, m a is de mo ins en m o ins e tendus, it p a rtir d es cha mps d e n e ige d es Monts S t. E li as, a u sud d e la zone e tudi ee.La N isling M oraine fo rme un e zon e cl e I km de large le long du Klondike P la teau, jusqu 'it 1040 m cI 'alt itude, it 12 km au n a rd-est d e Sn ag . L e lob e ex treme-n a rd de cette m oraine se termin e a u co nAue nt d es rivi eres D onj ek e t White, it 120 km d e la source d e gla ce la p lus proche, le K lutla n G lac ier. A 11 km a u no rd -est de Snag, le front tres m a rque cl e la D ol\i ek M orain e se t ro uve it 18 0 m e n-dessous du fro nt d e la N isling M ora ine. L 'ex tensia n ve l'S le nord d e la Donj ek M ora ine se te rm in e it 106 km clu Klut lan G lac ie r e t occ upe les COUl'S inferi eurs cle canyons cr euses clans la N isling M o ra ine . Le front cle la S n ag Mora ine cou pe la va llee d e la White Ri ver 2 I 0 m en -clessou s clu front d e la D o nj e k M ora in e et it 96 km a u norcl cl e K lu tl a n G lac ier. La T ch awsa hman M ora ine . it 38 km a u nord-oues t d e Klu tla n G lac ie r , est formee d ' une se ri e d e cr e tes concentri q ues dont la plus a neienn e ret ient les eaux clu lac T chawsahmo n.U ne etucl e pre li mina ire cle leurs co rre la ti ons semble indi q u e r que la N isli n g M ora ine cla te cI 'avant l' IlIi noi s, la Donj ek d e l' Illinois, la Snag cI 'ava nt le Wisconsin c lass ique et la T c hawsa hmon clu W isconsin ...
The stratigraphic and areal distribution of zeolites and their sedimentary associations in deep-sea sediments of the South Atlantic have been determined by examination of all available preQuaternary core and dredge material as well as sediment recovered from deep drilling. Clinoptilolite occurs in association with three dominant sediment components; volcanic, biosiliceous, and turbidite/clays, each of which may provide a source of silica for authigenic formation. Through time, the relative importance of these associations has changed significantly, reflecting the development of lithofacies and evolution of the South Atlantic basin.
ABSTRACT. A m o raina l sequence in south-west Yukon T e rritory, Canad a , r ecords a t least four m ajor. successivel y less ex tensive g lacia tions from ice fi elds in the St. Eli as M ounta ins south of the glaciated a rea.Th e N isling Mora in e Aan ks the K lo ndike P lateau in a belt I km . wide to a n a ltitude of 1, 040 m ., 1 2 km . n o rth-east of Snag . Th e n orth ernm ost lobe of this mora ine te rmin a tes at the junctio n of the Donj ek a nd White Ri vers, 120 km. from th e neares t source of ice, Klutla n G lacie r. I I km. north-east of Snag, the pro min e nt front of the Donjek M oraine lies 18 0 m . below th e front of th e N isling Mora ine. Th e north ernm ost lo b e of th e Donjek M ora ine termina tes 106 km . north of Klutl a n G lac ier a nd occupies th e lower courses of ca nyon s c ut into the Nisling Mora ine. T he front of the Snag Mora ine c rosses the White Rive r va lley 21 0 m . b e low the front of th e D onj ek M o ra ine a nd 96 km. north of Klutla n G lac ier . The T chawsa hmon M ora ine, 38 km . no rth-west of Klutla n Glacier, consists of a seri es of con centri c ridges, the oldes t of which impo und ed T ch awsahmon La ke.Prov isiona l correla tio ns sugges t tha t the N isling M ora in e is pre-Ill inoia n ; th e D onjek, Illin oia n ; the Snag, pre-classica l vVisconsin ; and the T ch a wsahmon, cla ssical Wisconsin. RESUME. Pleis /ocene geologie du T erritorie du rukon dll sud-ouest, Canada . Dans une su ccession d e m o ra in es clans le sud-oues t du T e rrito r ie du Yuko n (Cana da ), on reconna it a u moins qu atre stad es glac iaires p rin c ipaux, m a is de mo ins en m o ins e tendus, it p a rtir d es cha mps d e n e ige d es Monts S t. E li as, a u sud d e la zone e tudi ee.La N isling M oraine fo rme un e zon e cl e I km de large le long du Klondike P la teau, jusqu 'it 1040 m cI 'alt itude, it 12 km au n a rd-est d e Sn ag . L e lob e ex treme-n a rd de cette m oraine se termin e a u co nAue nt d es rivi eres D onj ek e t White, it 120 km d e la source d e gla ce la p lus proche, le K lutla n G lac ier. A 11 km a u no rd -est de Snag, le front tres m a rque cl e la D ol\i ek M orain e se t ro uve it 18 0 m e n-dessous du fro nt d e la N isling M ora ine. L 'ex tensia n ve l'S le nord d e la Donj ek M ora ine se te rm in e it 106 km clu Klut lan G lac ie r e t occ upe les COUl'S inferi eurs cle canyons cr euses clans la N isling M o ra ine . Le front cle la S n ag Mora ine cou pe la va llee d e la White Ri ver 2 I 0 m en -clessou s clu front d e la D o nj e k M ora in e et it 96 km a u norcl cl e K lu tl a n G lac ier. La T ch awsa hman M ora ine . it 38 km a u nord-oues t d e Klu tla n G lac ie r , est formee d ' une se ri e d e cr e tes concentri q ues dont la plus a neienn e ret ient les eaux clu lac T chawsahmo n.U ne etucl e pre li mina ire cle leurs co rre la ti ons semble indi q u e r que la N isli n g M ora ine cla te cI 'avant l' IlIi noi s, la Donj ek d e l' Illinois, la Snag cI 'ava nt le Wisconsin c lass ique et la T c hawsa hmon clu W isconsin ...
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