86 / 352
$OEHUW HW DO -RXUQDO RI ,EHULDQ *HRORJ\
,QWURGXFWLRQ
7KH SUHVHQFH RI WHUUDQHV DIIHFWHG E\ KLJK XOWUD KLJK
3 PHWDPRUSKLVP KDV EHHQ GHVFULEHG LQ GLIIHUHQW FROOL
VLRQDO EHOWV ZKHUH WKH\ UHSUHVHQW WKH RURJHQLF VHFWLRQV
VXEGXFWHG WR WKH KLJKHVW GHSWKV DQG WKRVH DIIHFWHG E\ WKH
ROGHVW GHIRUPDWLYH DQG PHWDPRUSKLF HYHQWV )RUPDWLRQ
DQG H[KXPDWLRQ RI 8+3 URFNV PD\ RFFXU GXULQJ RFHDQLF
RU WKLQQHG FRQWLQHQWDO PDUJLQ VXEGXFWLRQ HLWKHU YLD FRQ
WLQXRXV FLUFXODWLRQ LQ OLWKRVSKHULF VFDOH ZHGJHV 3ODWW
$OOHPDQG DQG /DUGHDX[
RU YLD UHWXUQ
ÀRZ LQ ORZ YLVFRVLW\ RYHUSUHVVXUHG VXEGXFWLRQ FKDQQHOV
*HU\D
HW DO
*HU\D DQG 6W|FNKHUW
<DPDWR
HW DO
+RZHYHU VRPH UHFHQW SDSHUV KDYH VWDWHG
WKDW WKH GHYHORSPHQW RI XOWUD KLJK 3 FRPSOH[HV LV DOPRVW
H[FOXVLYHO\ UHODWHG WR WKH VXEGXFWLRQ RI WKLQQHG FRQWLQHQ
WDO PDUJLQV GXULQJ HDUO\ VWDJHV RI FRQWLQHQWDO FROOLVLRQ
ZKLFK QHFHVVDULO\ LPSOLHV WKH H[LVWHQFH RI D SURJUDGH FRQ
WLQHQWDO PDUJLQ IDFLQJ D UHWUR FRQWLQHQW &KRSLQ
:DUUHQ
HW DO
%HDXPRQW
HW DO
1XPHULFDO
PRGHOOLQJ RI H[KXPDWLRQ RI 8+3 XQLWV DW WKH WUDQVLWLRQ
IURP RFHDQLF VXEGXFWLRQ WR FRQWLQHQWDO FROOLVLRQ LQGL
FDWHV WKDW WKH ¿UVW RUGHU VWUXFWXUDO VW\OH RI WKH RURJHQLF
GRPDLQ LV FRQWUROOHG E\ WKH SHQHWUDWLRQ RI DQ 8+3 EXR\
DQW SOXPH VOLFH RI VXEGXFWLQJ SUR FRQWLQHQWDO PDUJLQ
LQ WKH RYHUO\LQJ ORZHU SUHVVXUH QDSSH SLOH 7KHUHIRUH WR
XQUDYHO WKH WHFWRQRWKHUPDO HYROXWLRQ RI KLJK XOWUD KLJK 3
FRPSOH[HV DQ LPSRUWDQW WRRO LV WR LQYHVWLJDWH WKH WHFWRQ
LF DQG PHWDPRUSKLF SURFHVVHV JHQHUDWHG GXULQJ WKH ¿UVW
VWDJHV RI WKH FROOLVLRQ WKRVH DVVRFLDWHG WR GHHS VXEGXF
WLRQ RI FUXVWDO OD\HUV DQG WKH JHQHUDWLRQ RI WKLFN RURJHQLF
ZHGJHV WKDW IUHTXHQWO\ LQYROYH VHFWLRQV RI OLWKRVSKHULF
PDQWOH
6RPH KLJK SUHVVXUH DQG KLJK WHPSHUDWXUH JQHLVVLF XQLWV
LQFOXGLQJ PD¿F URFNV ZLWK ORFDO XOWUD KLJK SUHVVXUH
PLQHUDO DVVHPEODJHV DSSHDU WKURXJK WKH 9DULVFDQ %HOW
RXWOLQLQJ WKH PDLQ VXWXUH ]RQH )LJ *LO ,EDUJXFKL
HW
DO
2EULHQ DQG 9UDQD
/DUGHDX[
HW DO
0DVVRQH
$UHQDV DQG 0DUWtQH] &DWDOiQ
7KLV W\SH RI XQLWV FRQWDLQV LPSRUWDQW LQIRUPDWLRQ DERXW
WKH WHFWRQRWKHUPDO HYROXWLRQ RI WKH 9DULVFDQ RU HR 9DULV
FDQ DFFUHWLRQDU\ FRPSOH[ PDLQO\ EHFDXVH RI WKH H[WUHPH
PHWDPRUSKLF FRQGLWLRQV DWWDLQHG DQG WKH VXSHUSRVLWLRQ
RI GHIRUPDWLRQDO HYHQWV WKDW WKH\ UHJLVWHU 7KH 3 7 HYR
OXWLRQ RI WKHVH JQHLVVLF FRPSOH[HV LV ZHOO GHVFULEHG LQ
VRPH FDVHV EXW D GHWDLOHG GHVFULSWLRQ RI WKHLU LQWHUQDO
VWUXFWXUH DQG SHWURORJLFDO FRQVWLWXWLRQ LV JHQHUDOO\ ODFN
LQJ &RQVLGHULQJ WKLV DQG ZLWK WKH DLP RI D EHWWHU XQGHU
VWDQGLQJ RI WKH VWUXFWXUH DQG HYROXWLRQ RI WKH 9DULVFDQ
VXWXUH ZH SUHVHQW D FDVH VWXG\ RI D YHU\ JRRG H[SRVXUH
RI RQH RI WKHVH XQLWV WKH HFORJLWH IDFLHV JQHLVVHV RI WKH
&DER 2UWHJDO &RPSOH[ )LJV DQG DOVR SUHYLRXVO\
SUHGLFWLRQV EDVHG LQ QXPHULFDO H[SHULPHQWV DERXW WKH H[KXPDWLRQ RI XOWUD KLJK 3 FRPSOH[HV &RQVHTXHQWO\ LW UHSUHVHQWV D GLUHFW
FRQ¿UPDWLRQ RI WKHVH PRGHOV
.H\ZRUGV
(FORJLWH IDFLHV JQHLVVHV WHFWRQRWKHUPDO HYROXWLRQ H[KXPDWLRQ PRGHO 9DULVFDQ %HOW &DER 2UWHJDO &RPSOH[
5HVXPHQ
/D HYROXFLyQ WHFWRQRWHUPDO GH ORV JQHLVHV HFORJtWLFRV GHO &RPSOHMR GH &DER 2UWHJDO KD VLGR LQYHVWLJDGD FRQ QXHYRV HVWXGLRV GH
FDPSR \ SHWUROyJLFRV /RV JQHLVHV HVWiQ LQFOXLGRV HQ ODV XQLGDGHV VXSHULRUHV GH DOWD SUHVLyQ \ DOWD WHPSHUDWXUD +3 +7 GH ORV FRP
SOHMRV DOyFWRQRV GHO 1: GH ,EHULD FRQVLGHUDGDV SDUWH GH XQ WHUUHQR SHUL *RQGZiQLFR GH HGDG &iPEULFD RULJLQDGR HQ XQ FRQWH[WR
GH DUFR PDJPiWLFR (VWH WHUUHQR VH HQFXHQWUD HPSOD]DGR VREUH GLIHUHQWHV XQLGDGHV R¿ROtWLFDV TXH UHSUHVHQWDQ OD VXWXUD GHO 2FpDQR
5KHLFR 6H KDQ UHDOL]DGR GRV VHFFLRQHV JHROyJLFDV GHWDOODGDV GH DÀRUDPLHQWRV FRVWHURV TXH PXHVWUDQ ODV OLWRORJtDV FRQVWLWX\HQWHV \
ODV GHIRUPDFLRQHV TXH DIHFWDQ D OD IRUPDFLyQ JQpLVLFD TXH DSDUHFH FRQVWLWXLGD SRU SDUDJQHLVHV FRQ DEXQGDQWHV LQFOXVLRQHV Pi¿FDV
URFDV IpOVLFDV \ HVFDVDV LQFOXVLRQHV GH URFDV XOWUDPi¿FDV /DV URFDV IpOVLFDV YDUtDQ GHVGH OHXFRVRPDV FHQWLPpWULFRV KDVWD FXHUSRV
PpWULFRV \ OD PD\RUtD GH HOODV IXHURQ JHQHUDGDV GXUDQWH XQ SURFHVR GH IXVLyQ SDUFLDO JHQHUDOL]DGD /D SULPHUD IiEULFD WHFWyQLFD
GHWHFWDGD HV XQD IROLDFLyQ UHOLFWD 6 PX\ UDUDPHQWH SUHVHUYDGD TXH VH FRQVLGHUD GHVDUUROODGD GXUDQWH XQ SURFHVR GH VXEGXFFLyQ
FD
0D NEDU /D IROLDFLyQ UHJLRQDO PLORQtWLFD OD HVWUXFWXUD SULQFLSDO HQ ODV XQLGDGHV GH +3 +7 IXH JHQHUDGD GXUDQWH
XQD GUiVWLFD \ UiSLGD H[KXPDFLyQ FD
0D
NEDU /D JHQHUDFLyQ FRQVHFXWLYD GH GHVSHJXHV H[WHQVLRQDOHV SOLHJXHV UH
FXPEHQWHV \ GH XQ JUDQ FDEDOJDPLHQWR EDVDO WXYR OXJDU GXUDQWH OD WUDQVLFLyQ GHVGH OD VXEGXFFLyQ GH XQ PDUJHQ FRQWLQHQWDO KDVWD
OD LPEULFDFLyQ GH ODV XQLGDGHV R¿ROtWLFDV (VWDV HVWUXFWXUDV VXFHVLYDV HVWiQ SUREDEOHPHQWH UHODFLRQDGDV \ VRQ FRQVHFXHQFLD GH OD
SURQXQFLDGD H[KXPDFLyQ GHO FRPSOHMR VXEGXFLGR /D HYROXFLyQ WHFWRQRWHUPDO GH ORV JQHLVHV HQ IDFLHV GH ODV HFORJLWDV GHO &RP
SOHMR GH &DER 2UWHJDO UHSUHVHQWD XQ HMHPSOR LOXVWUDWLYR GH OD LQWULQFDGD KLVWRULD GH HVWDV XQLGDGHV VXEGXFLGDV D JUDQ SURIXQGLGDG
UHODWLYDPHQWH IUHFXHQWHV HQ OD ]RQD GH VXWXUD GH OD &DGHQD 9DULVFD (V LPSRUWDQWH UHVDOWDU TXH ODV SDXWDV HVWUXFWXUDOHV SHWUROyJLFDV
\ JHRFURQROyJLFDV GH OD HYROXFLyQ GH HVWD XQLGDG JQpLVLFD VH DMXVWDQ FRQ GHWDOOH D ORV PRGHORV HVWDEOHFLGRV PHGLDQWH H[SHULPHQWRV
QXPpULFRV SDUD OD H[KXPDFLyQ GH FRPSOHMRV GH XOWUD +3 &RQVHFXHQWHPHQWH OD HYROXFLyQ GHVFULWD SXHGH FRQVLGHUDUVH XQD FRQ¿U
PDFLyQ GLUHFWD GH OD YHURVLPLOLWXG GH HVWRV PRGHORV
3DODEUDV FODYH
*QHLVHV HFORJtWLFRV HYROXFLyQ WHFWRQRWHUPDO PRGHOR GH H[KXPDFLyQ &DGHQD 9DULVFD &RPSOHMR GH &DER 2UWHJDO
4. THE ECLOGITE FACIES GNEISSES
70