suite plutonic rocks from the highlands of the Eart

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In the paper "Processes involved in the formation of magnesian-suite plutonic rocks from the highlands of the. Earth's Moon" by Gregory A. Snyder, Clive R. Neal, ...
JOURNAL

OF GEOPHYSICAL

RESEARCH,

VOL. 100, NO. E8, PAGES 16,987-16,989, AUGUST

25, 1995

Correction to "Processesinvolved in the formation of magnesiansuite plutonic rocks from the highlandsof the Earth's Moon" by Gregory A. Snyder, C!ive R. Neal, and Lawrence A. Taylor In the paper"Processes involvedin the formationof magnesian-suite plutonicrocksfrom the highlandsof the Earth'sMoon" by GregoryA. Snyder,Clive R. Neal, andLawrenceA. Taylor (Journalof Geophysical Research, 100(E5), 9365-9388, 1995), the followingfiguresdid not reproducewell. The figuresand their captionsare reprintedbelow.

An in P!agioclase

Cr (ppm)

Figure 1. Plot of An contentof plagioclaseversusMg# in mafic mineralsfor "new" magnesiansuiteclasts.Also shownarefields for lunar alkali anorthosites, ferroan anorthosites, and the

Chondri

magnesian-suite.

10,000

Troct/An

Norites Dunites

1,000 ß-

100 7}'octolites'

10 GabbtvsNorite•¾

1

10

100

1,000 10,000

Cr/La Figure 3.

Copyright1995 by the AmericanGeophysicalUnion.

Log-log plots of (a) the moderatelysiderophile elementsCr (ppm) versusNi (ppm) for our "new" magnesiansuite rocks, and (b) moderatelysiderophile/lithophile element ratiosCr/La versusNi/La. Also shownare fieldsfor all large (> 1O0 mg), probably pristine gabbros/norites,

Palmr number95JE02124.

troctolites/anorthosites, ultramafic

0148-0227/95/95JE-02124502.00

meteorites.

16,987

rocks,

and

chondritic

16,988

CORRECTION

500

14303,261

Dunites 1oo

bbros &

200

14303,306

Norit.•es 14304,154 14304,174

14303,308

14305,443

14304,160

14305,450

1o

14305,489

1

....

o.1

II•1I I I I I I I I I I I I I I I I I I Ba Ce NdSmGd La

Yb

Eu Tb

I

Ba Ce NdSmGd

Hf Th

La

Lu Zr Ta

500 [

Troctolites &

200

Anorthosites



10

Hf Th

Lu Zr Ta

14321,1331

14304,166

,.• 50 20

Yb

14303,302

100 5•'....................... • ...........•:-:•'•' •:•...•?

,•

Eu Tb

14304,172 14305,451 14305,453



2

14305,460 Ba Ce NdSmGd La

EuTb

Yb

HfTh

Lu Zr Ta

Figure4. Chondrite-normalized plotsof trace-elements for magnesian suiterocks:(a) dunites;(b) norites;(c) troctolitesandanorthosites. Alsoshownareshadedfieldsfor all other"large,"pristine,magnesian-suite rocksof that lithology(Tables4 and6).

CORRECTION

16,989

0.6998

0.6994



MgSuite•':iii ........... x• 43% ..::..if!!! .......... !ii!',i!i7'"' !

0.6990

0.001

0.01

0.1

87Rb/s6sr Figure5. Plot of 87Rb/86Sr versus87Sr/86Sr (at 4.2 Ga reference

60



• 5o I 74 FAN

age) for magnesiananorthosite clast 14303,347relativeto fields for the ferroan anorthosites (FAN; [Nyquist, 1977]), KREEP [Nyquist, 1977; Nyquist and Shih, 1992], and an alkali anorthosite[Snyderet al., 1995]. Notice that the scaleon the abscissais in log units. KREEP may also extendto higher

ß,• 40

87Sr/S6Srvalues.

• 2

3o

lOO An in plagioclase

Figure 6. Plot of An contentin plagioclase versusMg# in orthopyroxene and/orolivine for cumulates from an average Apollo 15 KREEP basalt(asperSnyderet al. [1995]). Squares indicatethe percentages of crystallizationof the KREEP basalt parent. Arrowsare for crystallization andadditionof a trapped, residual,KREEP-basaltliquid.

(Rex:eivedJuly 12, 1995)