j. petrology 2003 gertisser 457 89

8/13/2019 j. Petrology 2003 Gertisser 457 89

1/33


2/33


3/33

108 E 124 E

Sumatra

Java

Kalimantan

Sulawesi

Bali

Lombok

Sumba

FloresSumbawa

IndianOcean

PacificOcean

SouthChinaSea

0 500 km

Malaysia

PhilippinesThailand

Brunei

Malaysia

Australia

Singapore

Timor

Maluku

0

8S

SUNDA

BANDA

SANGIHE

HALMAHERA

JavaSea

BandaSea

Merapi

Irian

Jaya

Australian

continentalshelf

Java trench

7cm/yr

6cm/yr

EURASIANPLATE

INDO-

AUSTRALIAN

PLATE

DSDP211

V33-75

V33-77

V33-79


4/33

Java

Sundoro

Sumbing

Ungaran

Merbabu

Merapi

Yogyakarta

Prembun

Purworejo

Magelang

Muntilan

SalamKlaten

Surakarta

70'

730'

80'

11030'1100'

0 25kmIndianOcean

DiengPlateau

Sleman

TelomoyoMerapi

2500

2000

1500

1000

500

2000730'S

N P

K

B

J S

Muntilan

Pakem

Ka

liG

endo

l

Ka

liW

oro

Kali

Bedok

KaliPabe

lan

KaliKra

sak

KaliBata

ng

KaliPutih

KaliLamatKaliSenowo

KaliTrising

Ka

liB

oyong

KaliKun

ing

KaliApu

KaliBlongkeng

Klaten

TurgoPlawangan

Bibi

Gendol

Hills

Salam740

'S

KaliBe

beng

Cepogo

735'S

110 30' E110 25' E 110 35' E110 20' E

0 5km

Sleman

WungkalHills

Menoreh

Mountains


5/33


6/33


7/33


8/33


9/33


10/33


11/33


12/33


13/33

52 56 60

SiO2(wt %)

48 585450

high-K

1

2

3

0

K2O

(wt%)

Merapi High-Kseries

Merapi Medium-Kseries

Alteredsamples(LOI>2.5wt %);Medium-Kseries

Basalt BasalticAndesite Andesite

medium-K

low-K

1900yrB.P.


14/33

48 50 52 54 56 58

SiO2(wt %)48 50 52 54 56 58

SiO2(wt %)

18

20

22

24

26

2.5

3.0

3.5

4.0

4.5

1.5

2.5

3.5

4.5

6

7

8

9

10

11

7

8

9

10

0.6

0.8

0.9

0.7

1.0

1.1

Al2O3(

wt%)

MgO

(wt%)

Na2O

(wt%)

TiO2(

wt

%)

Fe2O3*(wt%)

CaO

(wt%)

Merapi High-Kseries


Alteredsamples;Medium-Kseries


15/33

Rb(ppm)

Ba

(ppm)

V(

ppm

)

Zr(ppm)

Co(ppm)

Cr(ppm)

48 50 52 54 56 58

SiO2(wt%)48 50 52 54 56 58

SiO2(wt%)

0

10

20

30

40

50

60

70

80

60

80

100

120

140

200

300

400

500

600

700

100

50

100

150

200

250

300

350

0

20

40

60

80

100

120

0

5

10

25

30

20

15

35

MerapiHigh-Kseries

MerapiMedium-Kseries



16/33

1

0.1

10

100

200

Ba U Ta La Pb Mo P Sm Hf Ti Tb Y Er Yb

Rb Th Nb K Ce Pr Sr Nd Zr Eu Gd Dy Ho Tm Lu

Sample/N-MOR

B

0.1

10

100

200

Sample/N-MORB

N-MORB

N-MORB

(a)MerapiHigh-Kseries

(b)MerapiMedium-Kseries

Sample/Chondrite

1

10

100

200

La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Sample/Chondrite

1

10

100

200

(a)Merapi High-Kseries

(b)Merapi Medium-Kseries


17/33

Enrichment/Depletion

(%)

Atomic number

Be

B

KRb

Sr

YZr

Nb

Ba La

Ce

PrNdSm

EuGdTb

DyHo ErTmYb Lu

HfTa

Pb

Th

U

-30

-20

-10

0

10

20

30

40

50

Enriched

inhigh-Krocks

Depletedin

high-Krocks


18/33

0.700 0.705 0.710 0.715 0.720

87Sr/86Sr

MORB

Indian Ocean

Merapi

Sediments

Indian Ocean

bulkearth

bulk

earth

Sediments(localuppercrust)

Crustal

xenolith

(calc-silicate)

Java(excl.Merapi)

OIB

Indian Ocean

Merapi High-Kseries(thisstudy)

Merapi Medium-Kseries(thisstudy)

Altered samples;Medium-Kseries(thisstudy)

Merapi (published data fromotherauthors)

1

43Nd/1

44Nd

1

43N

d/1

44Nd

(a)

Ringgit-Beser(K&EK)

0.7035 0.7045 0.7055 0.7065

Java (excl.Merapi)

(Whitford etal.,1981)

bulkearth

bulk

earth

Mantle

Array

87Sr/86Sr

Galunggung(CA)

JavaKr

Me

MuGuGg

Ce

RBGuntur

(TH)

Muriah

(K&HK)

Guntur(CA)

Cereme (CA)

Ringgit-Beser

(CA&HKCA)

Krakatau(CA) Merapi

0.5118

0.5120

0.5122

0.5124

0.5126

0.5128

0.5130

0.5132

0.5134

0.5125

0.5126

0.5127

0.5128

0.5129

0.5130

(b)


19/33


20/33

15.3

15.4

15.5

15.6

15.7

15.8

15.9

207Pb/204Pb

Sediments

Indian Ocean

Java(excl.Merapi)

NHRL

OIB

Indian Ocean

MORBIndian Ocean

Java

(excl.Merapi)

Merapi

Crustalxenolith

(calc-silicate)

15.67

15.69

15.71

15.73

15.65

207Pb/

204Pb

18.70 18.75 18.80206

Pb/204

Pb

Sediments(localuppercrust)

36.5

37.5

38.5

39.5

40.5

41.5

208Pb/204Pb

17.0 17.5 18.0 18.5 19.0 19.5 20.0

206Pb/204Pb

Sediments

Indian Ocean

Merapi

Sediments (localuppercrust)

Crustalxenolith(calc-silicate)

OIB

Indian Ocean

MORBIndian Ocean

18.70 18.75 18.80

39.1

38.9

39.3208

Pb/204

Pb

206Pb/

204Pb

NHRL

Merapi (published data from otherauthors)

Merapi High-Kseries (this study)

Merapi Medium-Kseries (this study)

Sediments

Indian Ocean

Merapi

Crustalxenolith

(calc-silicate)


21/33

18O(

SMOW)

+5.5

+6.5

+7.5

+8.5

-0.5 0.5 1.5 2.5 3.5 4.5

LOI,wholerock(wt%)

18O =0.46*LOI+6.32

R2=0.85

(a) Whole-rockdata

+5.5

+6.5

+7.5

+8.5

-0.5 0.5 1.5 2.5 3.5 4.5

LOI,wholerock(wt%)

18O =0.10*LOI+6.51

R2=0.51

(b) Plagioclaseseparates


22/33

0.51270

0.51275

0.51280

39.1

39.3

15.65

15.70

15.75

18.75

18.80

+6.5

+7.5

+8.5

SiO2(wt %)

51 53 55 57

SiO2(wt %)

51 53 55 57

0.51265

38.9

0.7052

0.7056

0.7060

0.7048

18.70 +5.5

143Nd/144Nd

207

Pb/204Pb

w.

r.

18O

(S

MOW)

208

Pb/204Pb

206Pb/204Pb

87Sr/

8

6Sr

FC

SH

Merapi High-Kseries




23/33


24/33


25/33


26/33

OIB

Indian Ocean

17.0 17.5 18.0 18.5 19.0 19.5 20.0

206Pb/204Pb

143Nd/144Nd

0.5118

0.5120

0.5122

0.5124

0.5126

0.5128

0.5130

0.5132

0.5134

MORB

Indian Ocean

Sediments

Indian Ocean

Java (excl.Merapi)

Merapi

MORB

Indian Ocean

OIB

Indian Ocean

SedimentsIndian Ocean

Sed.-C

Sed.-B

Sed.-A

Sed.-B

Sed.-C

Sed.-A

1%

2%

3%

0.700

0.705

0.710

0.715

0.720

87Sr/86Sr

Java (excl.Merapi)

Merapi

Merapi (published data fromother

authors)

2%

3%

3%

1%

10%

5%

Merapi High-Kseries(thisstudy)

Merapi Medium-Kseries(thisstudy)

2%

3%

1%

10%

1%

5%

1%1%

2%

Sediments

(localuppercrust)

Crustal

xenolith

(calc-silicate)

Crustal

xenolith

(calc-silicate)

Sediments

(localuppercrust)


27/33

0.708

MORB

Indian Ocean

Merapi

Sediments

(localuppercrust)

Crustalxenolith

(calc-silicate)

Sediments

Indian Ocean

OIB

Sed.-B

(87Sr/86Sr~0.706-0.717)

Sed.-C

Sed.-APP

0.702 0.704 0.706

1

8O(

S

MOW)

87

Sr/86

Sr

+5

+9

+13

+17

+21

18

O(

S

MOW)

87Sr/86Sr

0.7048 0.70600.70560.7052

9

7

8

6

Java

(excl.Merapi)

2%

3%

2%1%

5%

10%

1%

1%

20%

40%

60%

80%

Merapi High-Kseries


Altered samples;Medium-Kseries


28/33

Ba/Zr

3

4

5

Th/Zr

0.04

0.06

0.08

0.10

Ce/Zr

0.7048 0.7052 0.7056 0.7060

0.25

0.30

0.35

0.40

0.45

87Sr/86Sr

Merapi High-K series

Merapi Medium-K series

Alteredsamples;Medium-K series

0.09

0.13

0.17

0.21

0.25

B/Zr

0.7048 0.7052 0.7056 0.7060

87Sr/86Sr


29/33


30/33


31/33


32/33


33/33

j. petrology 2003 gertisser 457 89

Documents