Article
Reference
Sur une formation artificielle de sablons stratifiés
CAROZZI, Albert V., JAYET, Adrien
CAROZZI, Albert V., JAYET, Adrien. Sur une formation artificielle de sablons stratifiés. Compte rendu des séances de la Société de physique et d'histoire naturelle de Genève, 1946, vol. 63, no. 1, p. 27-29
DOI : 10.5169/SEALS-742877
Available at:
http://archive-ouverte.unige.ch/unige:126259
Disclaimer: layout of this document may differ from the published version.
1 / 1
6e$1&( '8 )e95,(5
$GULHQ -D\HW HW $OEHUW &DUR]]L ² ©WLF RUPD5RUH DUL
=DH:H GH VDq=RZV VIUD L=pV
/HV GpS{WV JUDYHOHX[ GH )DOOXYLRQ DQFLHQQH HW FHX[ GH OD WHUUDVVH GH P VRQW H[SORLWpV j 5LFKHOLHQ SUqV GH 9HUVRL[ SDU GHX[ LPSRUWDQWHV JUDYLqUHV 'DQV OXQH GHOOH OD PDWLqUH JUD YHOHXVH HVW GpEDUUDVVpH SDU ODYDJH GH VHV pOpPHQWV ILQV HQ YXH
GH OD IDEULFDWLRQ GX EpWRQ
$
OD VXLWH GH FHWWH pOLPLQDWLRQLO
VHSURGXLW
XQH VXSHUSRVLWLRQ UHPDUTXDEOH GHV PDWpULDX[ ILQV HQWUDvQpV VRXV IRUPH GXQH VWUDWLILFDWLRQ DUWLILFLHOOH /DQDORJLHGH FH SKpQRPqQH DUWLILFLHO DYHF OD VWUDWLILFDWLRQ QDWXUHOOH GH FHUWDLQV GpS{WV TXDWHUQDLUHV HVW WHOOHPHQW IUDSSDQWH TXHOOH QRXV D VXJJpUp OHV TXHOTXHV FRQVLGpUDWLRQV TXL VXLYHQW
9RLFL FRPPHQW VH
IDLW
OD VXSHUSRVLWLRQ GHV VWUDWHV JURVVLqUHV HW ILQHV SURYHQDQW GHOLQVWDOODWLRQ
GH ODYDJH GH 5LFKHOLHQ /HDX FKDUJpH GH SDUWLFXOHV DUJLOHXVHV HW VDEOHXVHV DUULYH GDQV XQ EDF GH P /D PDVVH SULQFLSDOH GX PDWpULHO HQ VXVSHQVLRQVH VpGLPHQWH UDSLGHPHQW GDQV OH EDF VRXV IRUPH GXQ VDEORQ DUJLOHX[ FRPSDFW QRQ VWUDWLILp /H WURSSOHLQ HVW pYDFXp SDU XQH JRXWWLqUH HW VH UpSDQG VXU OH VRO FH TXL D IRUPp XQ GHOWD RX SOXV H[DFWHPHQW XQ F{QH GH GpMHFWLRQ GXQH ORQJXHXU HW GXQH ODUJHXU GH P
/DIIOX[
GH OHDX QHVW SDV UpJXOLHU OHV YDULDWLRQV pWDQWUpJOpHV SDU ODUULYpH GHV EHQQHV GH JUDYLHU j ODSSDUHLO GH ODYDJH OpFRXOHPHQW GX WURSSOHLQ HVW GRQF SpULRGLTXH /D SUHPLqUH DUULYpH GHDX GH
IRUW
GpELW HQWUDvQH OHV SDUWLFXOHV OHV SOXV JURVVHV HW UHFRXYUH OH GHOWD GXQH SUHPLqUH VpGLPHQWDWLRQGH VDEOH ILQ OD FRXFKH pWDQW pSDLVVH GH j PP 3XLV
ODSSRUW
GLPLQXH OD QDSSHIDLW
SODFH j XQ pYHQWDLO GH ILOHWV GHDX TXL UHPDQLHQW OH VDEOHOH GpFRXSHQW HQ GH QRPEUHX[ vORWV HW GpSR VHQW ILQDOHPHQW GDQV OHV ODUJHV FKHQDX[ FUHXVpV OHV FRXFKHV DUJLOHXVHV ILQHV pSDLVVHV GH j PP2Q SHXW GRQF GLUH TXH OH GpS{W ILQHPHQW VDEOHX[ FRUUHVSRQG
j XQH SKDVH GH FUXH OH GpS{W ILQHPHQW DUJLOHX[ j XQH SKDVH GH GpFUXH 1RWRQV TXDX GpEXW GH FHWWH SKDVH OD ODUJHXU GHV ILOHWV GHDX HVW SUHVTXH pJDOH j FHOOH GHV ]RQHV VDEOHXVHV TXLOV
6e$1&( '8 )e95,(5
RQW GpFRXSpHV &RPPH OHDX QH
WDULW
SDV FRPSOqWHPHQW HQWUH GHX[ YHQXHV SULQFLSDOHV OH PDWpULHO ILQ FRQWLQXH j VH GpSRVHU SHQGDQW WRXWH OH UHPDQLHPHQW HW VH VpGLPHQWH HQ ILQHV FRXFKHVFH TXL H[SOLTXH SRXUTXRL WDV ]RQHV DUJ]WD]]VHV VRQ PHLQHQ LWDHV WDXGLV J]]H WD VDGH HRUUHVSRQGDQL QH HV SDV
/H UpVXOWDW JpQpUDO HVW OD IRUPDWLRQ GXQ GDPLHU DVVH] UpJX OLHU GH SODJHV VDEOHXVHV HW DUJLOHXVHV j PXOWLSOHV SDVVDJHV ODWp UDX[ SODJHV TXL RQW j FP GH ORQJXHXU VXU j FP GH ODUJHXU 7RXW OH F\FOH GH VpGLPHQWDWLRQ VHIIHFWXH HQ j PLQXWHV
,O
YD VDQV GLUH TXH ORUV GH OD QRXYHOOH YHQXH OHV ILOHWV GHDX PRGLILHQW OHXU GLUHFWLRQ HW XQ DXWUH UpVHDX K\GUR JUDSKLTXH VH VXSHUSRVH DX SUpFpGHQW 0DLVLO
\ D OLHX GH UHPDU TXHU TXH WD ]QDpU]H= JURVVLHU VH VXSHUSRVH SUHVJ]]H WD]]R]UV D]]]QDpULH= ]Q GH WD HHQ]]H SUpFpGH]]H /D FDXVH HQ HVW OD VXLYDQWH
OHV ]RQHV DUJLOHXVHV VRQW IDLEOHPHQW GpSULPpHV SDU UDSSRUW DX[
]RQHV VDEOHXVHV HOOHV VRQW GRQF FRPEOpHV OHV SUHPLqUHV OH
ILOHW
GHDX HVW DORUV GpYLp VXU OHV ]RQHV VDEOHXVHV YRLVLQHV DXPRPHQW R
LO
SHUG GH VRQ YROXPH HW GH VD YLWHVVHLO
GpSRVH DORUV VXU OHV ]RQHV VDEOHXVHV GX PDWpULHO ILQ1RV REVHUYDWLRQV PRQWUHQW DLQVL TXH WD V]]SHUSRV]LLR© G]]]H
FR]]F]H ]QH V]]U ]]]]H FR]]F]H JURVVLqUH FRUUHVSRQG j GH]]U HHQ]]HV GHD]] V]FHHVVLHHV DYHF OHV YDULDWLRQV TXHOOHV FRPSRUWHQW VHORQ OH VFKpPD FLGHVVRXV
&RXFKH JURVVLqUH GH OD YHQXH Q
&RXFKH ILQH GH OD YHQXH Q
&RXFKH JURVVLqUH GH OD YHQXH Q
&RXFKH ILQH GH OD YHQXH Q
(WF
HQ ]pV]]WDH J]]]]Q H]FWD VH ]QDU]]]H HQ ]]Q SRLWD GR]]]]p SDU ]]]]H
VH]]IH FR]F]H H= ©RQ V]]]HDQ= HV LGpHV H] FR]]UV SDU D V]]SHUSRVWDLR]
GH GH]U FR]]F]HV 3DU FRQVpTXHQW VL ORQ YHXW pYDOXHU OH QRPEUH
GHV F\FOHV
LO
IDXW DGPHWWUH TXH FKDTXH FRXFKH UHSUpVHQWHXQ F\FOH FRPSOHW $LQVL FH QHVW SDV OD QDWXUH GH OD FRXFKH TXL HVW GpWHUPLQDQWH PDLV VD VHXOH SUpVHQFHª
6e$1&( '8 )e95,(5
&FZF=LPRWWV
/LQVWDOODWLRQ
GH ODYDJH GH 5LFKHOLHQ QRXVIDLW
DVVLVWHU j OD VpGLPHQWDWLRQ GH PDWpULDX[ ILQV VDEOHX[ HW DUJLOHX[ HW j OD IRUPDWLRQ GH OHXU VWUDWLILFDWLRQ 1RXV SHQVRQV TXXQ SURFpGp DQDORJXH FRPSUHQDQW SDU FRQVpTXHQW XQH YDULDWLRQ GX GpELW HW GH OD YLWHVVH GHV YHQXHV GHDX D SX GRQQHU QDLVVDQFH DX[VDEOHV HW DX[ DUJLOHV VWUDWLILpV GX 4XDWHUQDLUH UpJLRQDO
&H SURFpGp QHVW GDLOOHXUV TXXQ VLPSOH FDV SDUWLFXOLHU GH OD VpGLPHQWDWLRQ WHOOH TXRQ OD FRQoRLW GXQH IDoRQ JpQpUDOH &HVW SRXUTXRL
LO
IDXGUD UHFKHUFKHU SRXU OHV DUJLOHV ILQHPHQWVWUDWL
ILpHV GDQV OHVTXHOOHV RQ
YRLW
DFWXHOOHPHQW XQ HQVHPEOH GH GpS{WV DQQXHOV VL GDXWUHV DOWHUQDQFHV GLQWHUYDOOHV EHDXFRXS SOXV EUHIV QH SHXYHQW LQWHUYHQLU &HVW OLGpH j ODTXHOOH QRXV VRPPHV DPHQpV SDU OpWXGH GHV VDEORQV GH 5LFKHOLHQWQLFHUVGH GH *HQpHH /DERUDWRLUH H=H *HR=RJLH
+HUPDQQ *LVLQ ² /R=ªHL GH =X qLRFpLR=LoZH F=N SRZL= GH H©H GH =D ]RR=RJ=H
/HV pWXGHV IDXQLVWLTXHV TXL VH SURSRVHQW GH JURXSHU GHV HQVHPEOHV QDWXUHOV WHOV TXH OHV DUWKURSRGHV QLGLFROHV OHV LQYHUWpEUpV GX VRO OHV RLVHDX[ GH GLYHUV W\SHV GH PLOLHX HWF
VH
PXOWLSOLHQW
UDSLGHPHQW 7RXV OHV ]RRORJXHV QH OHV DFFXHLOOHQW FHSHQGDQW SDV DYHF OH PrPH HQWKRXVLDVPH 'DXFXQV QKpVLWHQWSDV j TXDOLILHU GH VWpULOHV FHV WUDYDX[ VXU GHV © IRXOHV ª TXL j OHXU DYLV © QH SHXYHQW GRQQHU OLHX j DXFXQ JHQUH GLQYHVWLJD WLRQV ª
&HWWH
DWWLWXGH
QpJDWLYH HVW REVHUYpH QRWDPPHQW SDU GHV VRFLRORJXHV LQWpUHVVpV DYDQWWRXW
DX[ OLHQV VRFLDX[ pWURLWV TXLOV RQWWUDGXLWV
SDU OD QRWLRQGLQWHUDWWUDFWLRQ
$VVXUpPHQWFH QHVW SDV
ODWWUDFWLRQ
UpFLSURTXH TXLXQLW
OHV RUJDQLVPHV FRPSRVDQW XQH IRUrW GH KrWUHV SDU H[HPSOH (VWFH j GLUH TXHGHV FRPPXQDXWpV ELRORJLTXHV DXWUHV TXH VRFLDOHV QH VRQW SDV GLJQHV GLQWpUrW (Q IDLW OHV JURXSHPHQWV VH UpSpWDQW WRXMRXUV DQDORJXHV VH PDQLIHVWHQW DYHF XQH pYLGHQFH TXL D IUDSSp ELHQ GHV QDWXUDOLVWHV ² HW SDUPL HX[ XQ +XPEROW 4XH OHV DUEUHV