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ABSTRACT, '. ,• • - . :

- \ '" " \ ·· f· ·

'. ': . .','-''In theEor~^Jlux~asques'are~^five"^geolo8ieai^·^diVisiOns^are^-

". '

~<

.'. ·,· ..\- ·.J·,' .·.. ' i .· . +,.> {, .:

.recogn~ed .~'"rb eee\8~e'Cape'RaJ,ColDpl ex::'The'Portaux~Basques'cc:implex _

- ' '91

e

W i' ' _s~r ~Oint~'eto~PI Harbr }~Cou

^G ^': ^{' \;'} e"1Iaydu

~~re;t L, · , , .,t._

v

~ro\l·p,-

• tr...^';l'he~ ^{firs t}, ^J\^{o ar:}_---^.se;ar•^ed

~y~

^and^tlie

-~ird\~Yer1:l~a

,

~

^...

~

•^{r -,'}," ^\ .. e,

i.J

wide-mYIO~i~eo~^CapeRay Fault:1The~rbour

LeCOu tmd"B;y- -;

-~ '~~--,

,-'"

:.~ I p " \ -, . - . ,

~6fdGr oups o\ciir_~,\_theeasrem part_,f.,t~~.area!Ul~ a~e_deformed" _ -

- . ' .'

.

^\

.

~ difrtn ther;ew~'ikingof the Po;taux.a8Bq~e,~mplex.:,I"',, , TheCa~e^RayComplex occurst'Qthe west of,th~p.

caPe

RayFault"',

~~zo~;"and' eompri~;S

^a

chaot~c".

ⁱⁿ^'tenllely

~e;ro;re:8II:~ ~.iieue~:ratie

^gneiss^f ^•^{-' .} ^{, ...}

•

i~tr".:

^..

t~.y. ~r~~~t~ci p~~~:...

^The

W~~d.O~\POint Gr ~U~~~~~~ ^'-:: ^l'

se riesofme.tasediiDentary and metavoluuie rockS-whi hunconforubly ,

. ~.. , I -....;., ~ • , , ' r---'---- I ~-~ -

ov_~r!i.e.t!te Cape RayComplexand ..the~p~ ~Faul't ne~::nd...have.beed....: ·

f

mild~~~~f?rmedby late tDOvem.entsa~on~ ~he...f~u~t.

i : ...

⁰¹ ~^{- , '} ^, .-ThePort auxBasquesComplex.c"-ropsoutto·

.

fite

i'

east of the

\.

Cap

. .-.

~e ~- ^I

,.'

Ra~~ault^{Zone and}COIDP t!Je'aaw bandfd gneis~^complex1nt~ded^by grani t i c phas es. Betvetn efaul.t .endis l e suxMpr ts at leastthree

:~2~::;~:':ll~S~ ;?:;t~~~~~~~ t·

' ..The

high~.t:~~~de

^of

~~':""rPhis~ i~

^••

~Ocl~t~d

^With.^the

.~tond e~en y;

⁾

a~d res~lted_inthe'develop~e~ o,\~rnet-l at au ro l!t-e • .kyani :f'. / ', ' :-;, s~l1i~ite .~ndpot a,s s i umfeld~p~r.. Th~ ~~rt^\8U:lCBasq~esg~a~1!. •

it

i.ntr~~e,d ^t.hegne~~s i~^post,~~,:~,.p~e:D2.~~~ea.~^.\.~. ^'^. .

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, l'; 't ~, .~ ;~:JW:i..j~j i,~; ,j [;;iS'·· ;;'··· · "

·'....~ef~rmedInd.me~amorphos~d.··::Tb~8~:.~~f~it~.,.t?reea~efec6gn1secl ••.':.

:~~\ 9~erprJ,nt th~ ~.1~.iO !~~~~'e~ " .d~ r~.~t. ~. ~~: d'~l~P;;;.;t;' ~~,~,~"

·. ho ea$t;

of~8hear

"Zones , re'ctiab eut

fold., -

and·teet:onlcal:tdea.

fifu; tng.

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I '

\,,_. :the.earl1est·event,·whi chiB4'tll~u~ni't'.pene~ra~·fv~.·t!i~~^gne1sse,l~re^..

>;?,~~ ;::f~;·~~:;'::r:t:~0:,;,:? :,:~:·;~~~j~·'ft~c:: .~'. " _.~ .

.

<~'t o semi-pelitic:rocks;the.Barbour.Le.Cou._Croup,~·.lnfolded,·,byth.1S-event....

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ana

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)a.~.t-c~r ~~t~c~ .~~· ~·+~~~;·;~:f?~.:EiI~~~.~tYf, :~(? i '~ ':~ "

.:lithol ogical·bol.llidaries ;:schist os U::f,es ,'.and:1iat rue'lve·tow "."Vit hfnit;'.:';'~'.:. •..

... . ...... . : ••¥ '• •'., " ;~ ~.~;:• •~ ••• • • ,t: :~'·;<I<;.....;···,_·.'. ".- <.'

.~^•^and·^an·B~ppa~~t~rad:t~~l ~:UlO~ph~~'c~t~c:t acros~^•^.Te~ton~::^.:..'~~::^,_^.

· 'l1d':::d:~·:~:::;l::~i;l.~jo:~:::i~j~~~<.i~·;.B~> ^du ~,rd ;

. ~r~up,

^vas

affe~ted

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~~:~ktng ~·e~~~ '71~:·'. ~

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~~up·is:

^by

~o~r~;ado:.- ~~er_to Kiddl~'

^De^vonian

In·~8~: in:di ~.~~g tha~ the~ '

^•

• -;fi ; : ; 'V:.i'C, -, ' . - '., ' ,.•.~ ~ _

•.~worldn 8-deformat10!l8 ere, at theoldest. !II'Acadi anevent . - \

',::-"\ , '!'he

~"pe ~

^Faul^t ⁱ^.B^{a 1}^km.^wide !o".;e'Of

b~:~e de;~~tlo~· .~. 1;~<,

!_

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~i~~~j;t

th~Lwesternmarginof the Pro"to',

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· . '>. c~m;l " CL~.d~~~~.~ot~C t.tli,;~ ~ ~~~~i;~:'.~

.'. cohav e fo'm'ed'pa; t of'.:ihe~tem-~rgin..·of.;the·Proto·Atlant icQcean. ~."

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B1BLIOC"¥HY, •'.''..: '.' " .'.,...

.APPENDIX

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Na t ure of.theRew:ork~gl:'

A8e

of.

the-.~~~rklng

^::.^.,

\::~

^..^..

"•.'THE WE RAY._..

_ . _- ....

FAlrr.T ·ZONE···

.

^' . . ,", • .10.', GEOWGICAL''~iSTORY^-OF^.

, TID:

ARY.A :

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138

. .

^' 146

.

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^157-^'^·,

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170 177

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...-~ISTOF"TABLES.

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1:.D18t r'i butlo n of.li thol ogi esiotbe_,·P~r~.a~x'Ba8qu~'~::: ^.. ^• .e:

•...

Gne~'

^••

CompleX •• ·... . ..' : : >.. . ' . ' .. : .. ... .: ~ ~. ^'> ⁶

2:'Stru'cp~r~l~d ~etamorph:i.~-~iSt~ry o(t·~.Cape··Ray

. ,

~.tlP··.·.~~~ Re·d:.RoCI(8~

^t^o

.:t.he. r:a~~~,,~y ·rtiUlt"" ~·; ~:'. ,

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3.'.St;ru:ctu~ai^and~~~rp~!~ h18i~ry.~1~th~8^.•P.O~~···auit-·.:

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:TABLE

I - : , :

··· .· l

IPO

.:!'

.~.:..'

159·'"

134 132,'

~mpar18on.of.'roclt'tYPes.~~o~rtie-Loog'RtiDgeH.8f1c Complex'

• • • . ' ••_. H.' , _,

and

't~e Ba;-

^of

.' I8i~ds.· ~oia~ l~ .~~t~ :~;~~~~ ~ri~_~~ ·~ .

.e~ui~al'e'~:t& ^•.::^. _':;::.~:'-'

. . .. ..

^.^~.^\^\^{', .}

.. ..i, F~~lt·.~^.^•^.'^.~'^.•""

Geological History of th eA~ea•• •

.t· · · :

... ^.'

'~\ ;:>,:Z;3j:SZ}~;?3t~l?~:~"'··'

s . .. S~triictuI .and: metrPhic.,

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,ACKNOWLEDG~TS

,; '

, ;.- ." : , ".';' "

.' -"r

wo~· le 't?-::'i:~\~~~e~i~O~ ~. ~".

^j^.

~~edY for".ht~

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inva~uab~ehelp,'and,sug8~s~i'~ns',bCl~~du'rt?g .i:h~"fie,~d~wor~,'and the

~' I ", " . , ,' ,"' , '. ' , "',.'•• '" _ " " " "

cOTllpi~ationof,t~ i8,the8 is,~, .,,rwo~~,a,l~~.like,'t~ t~ank.D~s;Smyth,and,., , ' .-

'C~lm~n~sa'~~ ' .

^Hr•

.-' , ',~1~~,~·.: ~~.,"~" :'~',':~'~e~~'~, ~ ~~~",;,

^,^B.,:"

,E:".~r~.~~;,~ ~d

Drs.'Golle rs o~'and WilH s mSfor,hel"p!ul:di~l:~8ions••~eith ~eroy.

"Ja~ki.~^{'Rose .} R~ben^Skinner,^a^nd^BOb'Wo'~d8'81;'e thahked

'fo r

their:~'si8tance^.''^.-

'" ,in.the

fie~·d·

^.^.:

~'e ':~ta,fi '," 't rt :' :'8'~'8' ·Hot~~" ar~·:th~~.~,~d:-fOr

^:^'

their t':Lreles~"~ervice.·'Thiswork wascarriedout·duriD.g'theteri~re'^ot"^:"

:, :1' " . ,~ " , , , :'. " ,^,^-fit' ^.^:^, ^',':^{, '}^':' ^{. ,} ^. ^•^.:^{_":, '}

a

.

Mem'orlal. :-Univer!!it)'". ..~.'Fello1o'ship

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wnach^" -ae^. 8J;stefullY^... ,acknowledged.^. . '

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.CHAP'TER'l

iNTRODUCTION. ..' .:

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..

.: 'Loc a tion'andAcc e ss'..

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;

The,stud; are'a;

' ~8 " l~~t~d ill:.··t~e ext~en-e a~~thwe_s.t.~;~·\iP.

^of: ^.

-,~elo!fo,un.dla~d.,:,~ndCOII!PT,fSe;.sappro.x-~tW.~~lY ^20Q~q. ^km.,be~een^CapeRa!

-:(la~';t~~c':^47°^40',^l^ongitucre59.015~

> .

:a rtd_G~ria^{'B8Y -',}(la~~tude:⁴7~⁴⁰ⁱ~

<longitude 58°';l~')': The~~~n8'''~~a,da'Hig!t~ay·r~.·(^fa ^2,kii?met~r8

. ' :::~:a::::a:::o:t:~b::::::.~~~j::.:~:~~~::o::r:q:::.~::d ' f::'

·l::: .B;::~:: .:~ . • ::;.B~::::.~1 '~::'::~3d:~:~::::u:.~.;:o:~.

: : (.;~g. \) ~.

^:^{The area}^'

from '~os~ il~~c'he, ealJt~a"t{ t~ Gia~Y:~i8'

^'only

,...,' ...:;---,---.. " i:',' . ,... .,/' " . ,

eccese db Ie by aea.. .: '"

. ' 1- ;.:'•. ..

Physiography'and CUmate..

: .Expoa ure 1n,~~e ~ap'-at-eaⁱ^s^.B~~~,r~~~~i,aii~ a~~ng·"th~~o~,.t~ine"·

.,and.up ~~.3km"i~land . The~e,~· .h~cv~r^'8.'Beneril~decrease~~-o!Jte~qp,

.' 1nhn-J,rom, ^the ^{;' aSt'} ^·.,T!'e b'd;Ock :1s,~n~r~ll; Or~r\~{n ~r~t.i'liand

^•^.'

vaeer Iogged.peat.depc af te,:--En the valleYs.where the'peat depos.itsare"

~ ':<i

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. ' thit~',''~4tcr~\1' is

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^' ^.

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~'iclges

^the^b^{ed r ock}

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thr cu gb a.~in.venee_'F"~f.p.eat.'.HUC~~fthe,e'~P09u~~Lnl'an d1'98upplie'~

byrochesecuecnaeeewhich indicatea nor thnortheast'tosouth8buthwe·s~

:

ma~e~~t'

^of

t~e

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:G~a~la~ .·.s't~la'~ a~~ 'ri~'t "'~nc''on d -~.i~~~~ '

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.di're~'t'idn ~£~~e~~:I;: . ,Termi nal mar ra fnes occur.:fotlll:ng tr,ansve~8e

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(32)

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Figure1

G.,n~ral ~orogh"d A-

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(33)

LEG E N D INTRUSIVES

Port cux Basques Complex Horbour Ie C ou Group

o

^W^indsor ^Po^int ^Group

o

^{Boy du} ^Nord ^Group

; , ; Fault

,J Rood

D

Pe tit es Granite

o

^La ^Poil^e ^Bathol^ith

Cope Ray Complex

o o

Port au, BOIQ".'

o

(34)

in thesouth . To.t hee~st';i:he b~lt^is.b~~ded'by,"therelat1.vely

. ^-^". . '" ' . . -" .. ."

.

. . ,

:

Ge~log1·~al .Se ttl~8 ~nd .preViO~~· ~or~\

^..

', '

Ne~foundland':Ls

^subdivided^broadly^Into^{'t.hre e}

dist1n~~' ~eOl0g1C

9ubd~v!sions. th~^W^esternPIBtfo~^(lCa:y.^,^1967>. ^theCentra~Pa1~eo'ZOlC

..' . : .'. ' . '; • :.. •. . . . '.. '. s , ,- ,".:~ .( .: . •••.. • .

...~~p~.Re.l~'(:~il~ ~V;'1.9~:~)., .a~d~;~e ~~~10n....p~~.~.~~mJ~Ya~~·.~.lbert ,· ':,·196.$).,"The Cenira l t..obUe'Bait•.charaCt erizedbyLowe r"Pal eo'zoie ;'.: .

:4:'-~a

_•

riablY··def·orme~·.~··~t~8~·i~nt~:ry"

_. _{_} _. _, _._' _.

" 'and

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_{_..} _•

Be.

_.

·u·e~~e8. ·

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_','.t~.th~~~st^b;~.th~~n~~~.n~~·~IIIpiex'q~'^;the'.~e8t~ni",p~~tfo~~bfCh ^"

.•ei~e~s f~oa.th~.:q~~at~o~ them Pe~iri~~l~.~~~'~orth^to-cap.e)i~1^. . .

,

.:und~forJled pre-:~ambt:lan"volcah'lC"a~dse41me~tarylI~queD;~~s..

of . the

•Ayaloo

;la ~fO~g, 2 ;: > , ,' :, : .. , . ;,~ :,:i :"'::

^{' >}

:rhe~eas te rnma'rg1nof the-Cen t r a-lHobiieBelt.conaists:of ,

'.~,:::::t~:[:::i::~:'b~n:::~::::i:::h::;.\:~:~t::[:::O;::t::~;~! ~_

,In'the·~outhf^_^and^,W^illiams~·t·.

" al-••

^t!197()).8Utg~St^tbs"^t

th e;

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:~:~:f:;:,~:g(:~:,:~ ~h~:~;'::l~:::~::e::::t~::.

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m'[herei?coovergenee~Of

t heeastern. . o d .

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.:",:

.

,

(35)

·~-

...

:

General'Geology. andMajor'S t ructll~al·.Dlvi8 ions·...

-.ofNewfotincUand ..

~f~·e~: Will~.~_e~~.~l~;·

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(36)

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(37)

"

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";.

veatern..

m~r.~~n8: .~(-the .Ct;:Qtiai> ~tiil; ·.Belt. . . . :. ...-. ' :' ..: : '. .

..

T.h~ . 8t~d y

^area

\la~

^{firs t}

mapp~d . ^b ^y :.~~lu!87-(18~3l ~~~ t'eccgrils~;~'~

^... ^.

" ,,. ",:

. ..

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:

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^{' , -} ^. ^::^".'^..^' ^..^•...

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the continua t io n of. thePreea~~~rO,ck8of-th eLong',Range'In't heCape.:

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^".

~ ;e.e~~.'~or~ '~_y" Mu;r~':~-~ 'l, '(li; :~·~·rm~~~..

^.

~:arli~r ~bse~ations

^•.'

Ph~ii(1949)' r~~~d~d :

^the^"

io~g Ri-a&~ :ign~o~. ~rid

. "• ., •. , " . ," . '," . '... . . ". ' '. :" ; . ':'1', ', ', .

·metamorph h:.Compl exasbeingPalaeozoicin age andten ta tivel ycor rela ted .

. , 'i:::,~::~::~:::e:.:~:::~:b::::r~.:.5::~·~::::::'~'~i.::'.:t.~·:,i .>

".PoneBa y, east'.of th epreaentjoap'ar e a:.a nd out.lloedl.t;\IQ"gnC1&8compiexes'

· ..", . ' '. ' . .: i. '\ ":" .,: . ".

^< ^•

e ....:.':; .. ..

~:" .:

.

:,,:~.~ . '.~.lt,hlna..pred~m1na!'tl)'Devcntan."Jn~tasedJme~tar!.4n~~tavolc::~n.lcte!.~ain.·~.

i i t ~;fj:'rE 1.'~J· ··

,.:'~"a,rid.::~!1~^..(1~6'si'c:a~rled ~ut.a~':er:;C?~.~J!l,i~~ur~ey~.;~,!~~~~ pe~t.lte~·'b~~~en·.

· isl, ~~~ ~;;s .fid ·Ro" B~'",';'. . ^. ^'. ^' ^. ^. ^.'.'.. ' j

..H,O\ol-:~~~.·;.i. t.;~a~.~?tunt1~..,t he..wor kof:.G~}l~~',(1?7.2):t.~a,~,~.

,'~etL~na~'~~"~'f'~he.·~r·ea"from Ca~e'Ray't'oLa-:"Po i ie::wa's'publi~h~d ; ',Gillis....

. " :.~~ . ' . " , . ' ,

'.'di~{d~d^thegnei s ses-~rtheare~'ⁱ^ot,O:~hree· br~adl,e~.t~8eparated~y':the

~~~.e^.Ray'~'nd Ba~^..^·dⁱE~t:'f~ult8:'-',~est.^of:,cthe.~a·~~·~y.f~~lt.^he"r.~~~~~;~~d'^.'

. "~. •f

cOlllp~e~of guef ese sand'sc~i s ~~.whi c h,hecor~e.~a~ed with the:,;l~dl~ri . HeadInt;usiv~ Compie~^ne^arSt~~h~nvllle^(Riley9.1962)'.".TIle~gn'eis8e~.

7' '.is';·!f t~.~ ^. ^, ';'Y :f: t"t;aF~.~'l~ ~.~~ii .. ~ a~ ·ord~~1Ci.i~g.

·and , in"par t,~or r~.l.ted'with'theD!Jman~.Gne1S s ofCooper_ ;(1.954>'.~

' .

, B~O~ ,~197~ .

:unp'ubU : hed'

H'~SC~ ' t~e·si's1.: u:aPP~d' 't~e '~oa8t~i' ~e'(!tion

^{. .}

.i

1' 1. i .

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.'.fromRe·d.Rocks'to·181e~aux.&r;.~BTOD~ ·.He·di~1d.edtheareS.:i.nt~.t~~ee..

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