Faciès peu connus du Crétacé supérieur des Préalpes médianes

(1)

Article

Reference

Faciès peu connus du Crétacé supérieur des Préalpes médianes

SCHROEDER, Jean-William, LOMBARD, André

SCHROEDER, Jean-William, LOMBARD, André. Faciès peu connus du Crétacé supérieur des Préalpes médianes. Compte rendu des séances de la Société de physique et d'histoire naturelle de Genève, 1939, vol. 56, no. 2, p. 76-79

DOI : 10.5169/SEALS-742236

Available at:

http://archive-ouverte.unige.ch/unige:154763

Disclaimer: layout of this document may differ from the published version.

1 / 1

(2)

FDOFDLUHV SODTXHWpV _SDVVH LQVHQVLEOHPHQW DX[ ^IDFLqV SOXV

GpWUL

WLTXHV GX )O\VFK &HWWH ^VXFFHVVLRQ DLQVL _TXH

OD

SUpVHQFH GH EDQFV

OHQWLFXODLUHV

^GH ^EUqFKH

QXPPXOLWLTXH

LQWHUFDOpV UDSSHOOHQW ^GHV SKpQRPqQHV WUqV VHPEODEOHV GpFULWV GDQV OH PDVVLI GX 0RUJRQ

j IDFLqV VXEEULDQoRQQDLV LQWHUQH

SDU

^' 6FKQHHJDQV

4XLO

PH VRLW SHUPLV HQFRUH ^GH UHPHUFLHU

LFL

0 OH 3URIHVVHXU

&ROOHW ^GH WRXV ^OHV FRQVHLOV

TXLO ^PD

^SURGLJXpV

WDQW

VXU OH

WHUUDLQ

TXDX

/DERUDWRLUH

%,%/,2*5$3+,(

%DUELHU

5 ^6XU OD _SUHVHQFH ^GH ^FDOFDLUHV ^j 5RVDLQHV GDQV OHV pFDLLHV GH ª6DLQW)ORUH© I&RUVHM

&56

^6RF ^*pRO )U

IDVF S

&ROOHW

^{/: /D} ^&RUVH ^/LpH ^HW ^O$SHQQLQ ^GX ^SRLQW ^GH ^{HXH WHFWR}

QLJXH %XOO ^6RF *pRO )U

9,,,

^S^S S

6FKQHHJDQV ' /D VpGLPHQWDWLRQ GX )LSVHW ^GHV L9DSSHV ^GH L(ED\H)UDEUXQDLV ^& 5 6 6RF *pRO )U ^IDVF S

/DERUDWRLUH GH *pRORJLH ^GH L,QLHHUVLWp

GH *HQqRH

$QGUp /RPEDUG HW

:LOO\

^{- 6FKU°GHU}

²

^)DFLqV SHD FRDZDV GD &UpWDFp VDSHULHDU ^GHV /9pDLSHV PpGLDQHV

$X

_FRXUV GH UHFKHUFKHV _VRXV OD

GLUHFWLRQ

^GH ⁰ ^OH 3URIHVVHXU

&ROOHW QRXV DYRQV GpFRXYHUW ^GH

FXULHX[

IDFLqV GX &UpWDFp VXSpULHXU ^GHV 3UpDOSHV PpGLDQHV DX FRO GH

OD

5DPD] HQWUH OH SODWHDX ^GH 6RPPDQ HW FHOXL GX 3UD] GH

/\V ULYH GURLWH

^GX

*LIIUH ^1RXV ^HQ DYRQV

IDLW

XQH pWXGH GpWDLOOpH

/H &RO ^GH OD 5DPD] PDUTXH ^OH FRQWDFW HQWUH OD 1DSSH ^GH OD

%UqFKH HW OD _1DSSH GHV 3UpDOSHV PpGLDQHV 6XU OH YHUVDQW

:

GH FH FRO XQ

WRUUHQW

IRUPH XQ ^FRXGH WUqV PDUTXp ^GDQV ^OHV FDUJQHXOHV GX 7ULDV ^GH

OD

1DSSH ^GHV 3UpDOSHV PpGLDQHV ^j P HQ DPRQW ^GX

SRQW

^GH

)DUTXHW SRLQW

1RWUH

GHVVLQ PLHX[ TXXQH ORQJXH GHVFULSWLRQ

SHUPHWWUD

^GH

UHWURXYHU

OHV GLIIpUHQWHV IDFLqV TXH QRXV DOORQV GpFULUH

(3)

2.0 lS 10

Coupe du torrent du col de la Ramez

Rive droite

om.

(L

e.s numeros correspon tn• aux descriptions du

.

^d ^~ ^{. .} som. ^texte~

E Eboulis

IOOm.

(4)

$ SDUWLU

^{GX FRXGH} ^GRQW ^QRXV SDUORQV SOXV

KDXW

RQ QRWH

&DOFDLUH FULVWDOOLQ JULV FODLU XQ SHX JUpVHX[ j *ORELJpULQHV HW LvRVDOPUW /LQQHL G2UE 6pQRQLHQ

&H 6pQRQLHQ SDVVH j GHV

OLWV

GH DVSHV HHUW GHDX j 5DGLRODLUHV SDU LQWHUFDODWLRQ SURJUHVVLYH ^GH ^VFKLVWHV YHUWV OXLVDQWV

/HVSS

MDVSHV DOWHUQHQW DYHF ^GHV VFKLVWHV DUJLOHX[ URXJHV HW YHUWV

&HV GHUQLHUV IRUPHQW VHXOV OH VRPPHW GH ODIIOHXUHPHQW LOV QH FRQWLHQQHQW _SDV GRUJDQLVPHV

6XU OD ULYH GURLWH GDQV OH KDXW _{GX WDOXV} FHV VFKLVWHV DUJLOHX[

URXJHV HW YHUWV VXSSRUWHQW ^GHV ^VFKLVWHV DUJLOHX[ ^QRLUV ^j OHQWLOOHV GH JUqV SOXV FODLUV ^2Q UHQFRQWUH GDQV OHV VFKLVWHV DUJLOHX[

QRLUV ^GHV FDOFDLUHVVLOLFHX[ HQOLWV _{GH j P} ^OHV XQV QRLUV OHV DXWUHV JULVFODLU ^6RXV ^OH PLFURVFRSH ^FHV GHUQLHUV FDOFDLUHV FRQWLHQQHQW /RVDLLQD

LPQHL

G2UE WDQGLV TXH ^OHV

OLWV

^QRLUV UHQIHUPHQW TXHOTXHV 5DGLRODLUHV FDOFLILpV

&DOFDLUHV ILQHPHQW FULVWDOOLQV GpMj GpFULWV VRXV

6FKLVWHV FRQWHQDQW XQH OHQWLOOH ^GH FDOFDLUH PDUQHX[ QRLU WUqV ILQHPHQW PLFDFp ^j WUDFHV GH ILQV &$RUHGUWIHV )O\VFK

6FKLVWHV URXJHV HW YHUWV

&DOFDLUHV FULVWDOOLQV^J^J FLWpV VRXV HQ SHWLWV ^EDQFV WRUGXV

6FKLVWHV URXJHV HW YHUWV ^j MDVSHV YHUW GHDX DYHF ^GHV VFKLVWHV URXJHV PDUQHX[ ^HW ^GHV ^VFKLVWHV MDXQkWUHV ^WUqV UHSOLVVpV )O\VFK FRQVLVWDQW HQ JUqV VFKLVWHV PDUQHX[ YHUGkWUHV ^HW

FDOFDLUH JUpVHX[ ILQV HQ DOWHUQDQFH

8Q

_SHX SOXV

ORLQ

YHUV

O(VW

RQ UHQFRQWUH GDXWUHV ^IDFLqV

GpWULWLTXHV

GX &UpWDFp VXSpULHXU

$ OHQGURLW R OH VHQWLHU TXL FRQGXLW ^GH )DUTXHW DX &RO GH OD 5DPD] HVW UHVVHUUp HQWUH OHV pERXOLV GX IODQF 6XG GH <pVLQH HW OH

WRUUHQW SUpFLWp RQ WURXYH XQH JUDQGH OHQWLOOH ^GH &UpWDFp VXSpULHXU PDUTXpH VXU OD IHXLOOH $QQHF\ ^pG ^&HWWH OHQWLOOH FRPSUHQG GHX[

EDQFV ^GH GH FDOFDLUH JULV ILQHPHQW VSDWKLTXH ^j ^5RWDLLGpV HW

*=RqLJpULHV DYHF TXHOTXHV 7DUWR=DLUHV ^%L=RFD=PHV HW 5RV /LQQHW

$ O:

^GH ^FHWWH OHQWLOOH RQ

YRLW

XQ ^JUqV ILQ JULV YHUGkWUH ^j VLOH[

WUqV _{SHX pSDLV} HW XQ DXWUH _JUqV FDOFDLUH PLFDFp GRQW OD JODXFRQLH WHQG ^j UHPSODFHUÔH FLPHQW &H GHUQLHUJUqV FRQWLHQW ^GHV *=RqLJpULQHV /H[WWW=DLUHV HW /RV /LQQHW G2UE 3XLV RQ REVHUYH XQ FDOFDLUH WUqV ILQ YHUGkWUH SDVVDQW ^j ^GHV ^VFKLVWHV DUJLOHX[ DYHF &WRQGULWHV HW VXU ÔH FKHPLQ XQH IDLEOH pSDLVVHXU ^GH VFKLVWHV DUJLOHX[ URXJHV IULDEOHV FRQWHQDQW XQ SHX GH PXVFRYLWH TXHOTXHV *=RqLJpULQHV HW L"RV /LQQHL PDO FRQVHUYpHV $ ^F{Wp GX FKHPLQ : RQ QRWH HQFRUH XQ FDOFDLUH JUpVHX[ JULV j &=RjWJHUIQHV HW UDUHV ÎvRVD=LQDV

8RUHFKPR0V

/D

UHPRQWpH GX

WRUUHQW

^GX ^&RO ^GH ^OD 5DPD] QRXV D

PRQWUp

OH[LVWHQFH ^GHV IDFLqV

VXLYDQWV

&DOFDLUHV

FULVWDOOLQV

_SDVVDQW

(5)

6e$1&( '8 -8,//(7 j 'HV MDVSHV ^j 5DGLRODLUHV HW VFKLVWHV URXJHV HW YHUWV

&DOFDLUHV j )RUDPLQLIqUHV ^*UqV FDOFDLUHV ^j JODXFRQLH

/D

SUpVHQFH ^GH IRVDOLUHD /LUHUHHL

G2UE

PRQWUH

TXLO VDJLW

^ELHQ ^GH

&UpWDFp VXSpULHXU ^j ^IDFLqV YDULpV

'X

SRLQW

^GH YXH

VWUXFWXUDO

QRXV DYRQV UHFRQQX GHX[ pFDLOOHV GH

WHUUDLQV

VHPEODEOHV OD SUHPLqUH FRPSUHQDQW ^OHV WHUPHV

HW HW OD VHFRQGH OHV WHUPHV HW

1RXV _SHQVRQV

DYRLU

DIIDLUH j GHX[

OHQWLOOHV

^GH FDOFDLUHV FULV

WDOOLQV

MDVSHV YHUWV GHDX HW VFKLVWHV _URXJHV HW YHUWV ^&HV GHX[

OHQWLOOHV

^GH

GLUHFWLRQ

WUqV REOLTXH SDU

UDSSRUW

^DX

WRUUHQW

^VRQW HPEDOOpHV GDQV OH )O\VFK ^GHV 3UpDOSHV PpGLDQHV TXL UHSRVH OXLPrPH PpFDQLTXHPHQW VXU OH 7ULDV ^GH

OD

_{PrPH QDSSH}

$X

GHVVXV GH FHV

OHQWLOOHV

GH URFKHV VL

SDUWLFXOLqUHV

^OH

)O\VFK

UHQIHUPH ^GH QRPEUHXVHV ODPHV GH &UpWDFp VXSpULHXU ^j ^IDFLqV FRQQX ^GHV 3UpDOSHV PpGLDQHV FRXFKHV URXJHV DXFW ^/H

)O\VFK

HVW ^j VRQ

WRXU

^FKHYDXFKp

SDU

ÔH ^7ULDV ^GH ÔD ^1DSSH ^GH ÔD^%UqFKH

$

SUHPLqUH YXH FHUWDLQV IDFLqV GpFULWV _MDVSHV HW ^VFKLVWHV URXJHV SHXYHQW IDLUH SHQVHU ^{j GHV}

WHUUDLQV

^GH OD _1DSSH

GHOD

6LPPH 1RXV DYRQV HQYLVDJp FHWWH VROXWLRQ &HSHQGDQW

OD

_SRVL

WLRQ _WHFWRQLTXH

^GH QRWUH ^VpULH HW

VXUWRXW

TXHOTXHV

SDUWLFXODULWpV

OLWKRORJLTXHV

GRQW OXQ

^GH QRXV $QGUp

/RPEDUG

UHSDUOHUD GDQV XQH

SXEOLFDWLRQ

SURFKDLQH QRXV FRQGXLVHQW j

YRLU

^GDQV

OH &UpWDFp VXSpULHXU ^{GX &RO} ^GH OD 5DPD] XQ ^IDFLqV LQWHUQH GX

&UpWDFp VXSpULHXU ^GHV 3UpDOSHV PpGLDQHV ^&H

WHUUDLQ

UHSUpVHQ

WHUDLW

SDU

^OD ^1DSSH ^GH ^OD ^%UqFKH ^HW ^SRXVVp VXU ^VRQ

IURQW

/D RUDORWUH GH *HRORJLH ^GH =*UHLHHUVLOp GH *HUHpRH

5HQp 9HUQLRU\

²

^'pFRUHZOH ^GDUH =UHLUH{HD]W GHV UHDSSHV UHIHUDbH=HHLLJUHHV j 7DULJUHWHU 7DUHLH1DHFGHM

1LLUHDLLRUH

²

^/HV DIIOHXUHPHQWV VpWHQGHQW VXU ^OHV GHX[

ULYHV GX *LIIUH HQ DPRQW GX

YLHX[

_SRQW VXU XQH ORQJXHXU

GXQ NP

VHQV

(:

HW VXU XQH ODUJHXU ^GH P

1OUDOLJUDSXH

²

^(Q

OHYDQW

OD FDUWH JpRORJLTXH GX 0{OH

MDL

^pWp IUDSSp SDU OD

VLPLOLWXGH

_TXH SUpVHQWDLHQW FHUWDLQV

Faciès peu connus du Crétacé supérieur des Préalpes médianes

Article

Reference