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granitoids unravelling stages of the Neo- stages of the Neo- Tethyan convergence in Tethyan convergence in the eastern Pontides the eastern Pontides and central Anatolia, and central Anatolia, Turkey Turkey D. Boztug* and Y. Harlavan** D. Boztug* and Y. Harlavan** * * Dept. of Geological Dept. of Geological Engineering, Cumhuriyet Engineering, Cumhuriyet University, 58140 Sivas, Turkey University, 58140 Sivas, Turkey **Geological Survey of **Geological Survey of
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K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Dec 14, 2015

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Page 1: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

K/Ar dating of granitoids K/Ar dating of granitoids unravelling stages of the Neo-unravelling stages of the Neo-Tethyan convergence in the Tethyan convergence in the eastern Pontides and central eastern Pontides and central

Anatolia, TurkeyAnatolia, Turkey

D. Boztug* and Y. Harlavan**D. Boztug* and Y. Harlavan**

**Dept. of Geological Engineering, Dept. of Geological Engineering, Cumhuriyet University, 58140 Sivas, TurkeyCumhuriyet University, 58140 Sivas, Turkey

**Geological Survey of Israel, 30 **Geological Survey of Israel, 30

Malkhe Israel St. 95501, JerusalemMalkhe Israel St. 95501, Jerusalem

Page 2: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

U/Pb, Rb/Sr, K/Ar, 40Ar/39Ar and Fission-Track geothermochronology, Oxygen and Sulfur isotope geochemistry providing the undercooling and exhumation history of some granitoids from Central and Western Anatolia, Turkey. CÜBAP – M-255

K/Ar, 40Ar/39Ar, Fission-Track Geochronology, Sr and Nd Isotope Geochemistry and Crystal Size Distribution Study of some Granitiods from the Central and Central-Eastern Anatolia, Turkey. TUBITAK-YDABAG-102 Y 149

Page 3: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

1. Cumhuriyet Univ. 1. Cumhuriyet Univ. Sivas,Sivas, TurkeyTurkey

2. Max-Planck Institute for Nuclear Physics, 2. Max-Planck Institute for Nuclear Physics, Heidelberg-GermanyHeidelberg-Germany

3. TU Bergakademie der 3. TU Bergakademie der Freiberg-GermanyFreiberg-Germany

4. Geological Survey of 4. Geological Survey of Israel, JerusalemIsrael, Jerusalem

5. University of Nevada, Reno, 5. University of Nevada, Reno, USAUSA

6. CNR-Inst. Geochr. Isotope Geochem. 6. CNR-Inst. Geochr. Isotope Geochem. Pisa, ItalyPisa, Italy

7. Univ. of Quebec, Chicutimi, 7. Univ. of Quebec, Chicutimi, CanadaCanada

Page 4: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Kýrþehir

Niðde

Giresun

Felahiye

Keban

Divriði

SivasAnkara

Kaman

Ýliç

Yahyalý

TrabzonRize

Artvin

ÝspirGümüþhane

0 100km

a

31 33 35 37 39 41

42

41

40

39

38

BLACK SEAN

Yozgat

Subduction-related intrusives(Senonian to early Palaeocene)

Collision-related intrusives(Campanian to middle-late Eocene)

Fault Thrust fault

1,6

32,3,4,5

2

44

6

6

Kýrýkkale

Kemaliye

Araklý

Page 5: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

GEOLOGICAL MAP OF THE KAÇKAR BATHOLITH ALONGA NORTH-SOUTH GEOTRAVERSE BETWEEN ARDEÞEN (RÝZE)

AND ÝSPÝR (ERZURUM) TOWNS, EASTERN PONTÝDES

Dilek Daðý

Ardýçlý

A-141

I-190

A-17

G-41S

G-44

A-95

E-16

KARA DENÝZ

Ardeþen

I-123

I-36G-41N

Duruköy

GüllübaðA-55

B-7B-4

B-12

YG-3

YG-63

YG-53

I-168K-93

K-106K-98

G-94 E-39

B-14

B-20B-21B-22

B-9

YG-29

YG-11

Berdiga Formation

Asniyor Daðý

unconformity

Çamlýkaya

Late J urassic-Early Cretaceous

Marselevat

E-2

K-125

Ayderyayla

E-38E-37

Sýrtyayla

Sasmistal

I-109

E-95

B-24

I-71I-70

B-6

K-23

I-122

Ardeþen Gabbro

Guvant Andesitic Tuff

Þebinkarahisar Formation

Güllübað Monzonite

Kabaköy Formation

unconformity

Ýsina Diabase

Asniyor Leucogranite

Marselavat Granodiorite

Ayder K-feldsparMegacrystalline Monzogranite

Sasmistal Microgranite

Çatak Formation

Kýzýlkaya Formation

Çaðlayan Formation

Basal Conglomerate of Kabaköy Formation

Neogene

Upper Eocene

Late CretaceousEarly Palaeocene

Alluviumunconformity

Sýrtyayla Monzogranite

Artvin F46

Ýspir

Yusufeli

Hopa

ArdeþenPazar

ÇayeliRize

FýndýklýArhavi

BLACK SEA

d1 d2

d4 d3

Tortum G46

a1

a4 a3

a2

Tortum G46

d4 d3

d2d1

BLACK SEA

TrabzonAnkara

MEDITERRANEAN SEA

N

0 5 km

Scale

Baþmahalle Monzogranite

unconformity

unconformity

Plio-Pleistocene

unconformity

Turonian

A-95 Geochronological Sample Location

Fault

Syncline

Anticline

Thrust

Early to Middle Eocene

Palaeocene

Çamlýhemþin Quartz Porphyrite

Early Cretaceous

unconformity

Çamlýkaya Granodiorite

Ardýçlý Formation

A-57 A-54

A-58

Yumruca

A-152

A-150I-4

Possible Fault

unconformity

SII

Study area

Recent

Halkalýtaþ Quartz Monzodiorite

unconformity ?

MaastrichtianI-20

Page 6: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Kýrþehir

Niðde

KebanDivriði

SivasAnkara

Trabzon

100km

a

31 33 35 37 39 41

42

41

40

39

38

BLACK SEAN

Yozgat

Figure 2Figure 3

Page 7: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

37

TUZ GÖLÜ

Aksaray

Nevþehir

Þefaatli

Kýrþehir

Karamadazý

Kayseri

Çiçekdað

Pýnarbaþý

40

39

3833 34 35 36

Yýldýzeli

Akdaðmadeni

Yozgat

(SALT LAKE)

Çelebi

Kaman

BeyobasýKýrýkkale

Felahiye

0 40 km

N

Paleocene- Eocene sediments

Neogene sediments

Late Cretaceous S-type leucogranites derivedexclusively from supracrustal rocks

Late Cretaceous I-type felsic granitoids derivedfrom a hybrid source generated by mixing typeinteraction between underplating mafic magmaand crustal felsic magma

Late Cretaceous M-type mafic intrusives mostly derived from underplating mafic magma which is co-eval with felsic I-type granitoid magma

L.Cretaceous-E.Tertiary A-type within-plate rifting related alkaline felsic granitoids

Paleozoic Tauride autochtonous

Pre-Mesozoic metasediments of the CACC

J urassic- Cretaceous limestone

Neo-Tethyan Ophiolitic melange (Late Cretaceous)

Paleo-Tethyan Ophiolitic melange (Permo-Triassic)

Page 8: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Alabaþ 1

2

32

34

5

6 79 10

8

11

12

14

13

151617

2526

Çiftlik mah.

ObrukAladayýlýbaðlarý

Ulumollahacý

28

3024

2118

31

1 2 3 4 5 6 7 8 9

23

22

21

20

19

18

17

1617 18 19 20 21 22 2423 25

0 1 km

N

27

29

Page 9: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Ada T.1088

981

Türüdüler

Höke

Deliler

Seydiyar

ÞerefoðluKüçükincirli

Hallaçlý

Hüyük T.1113

Hacýmusalý

Cankýlý

Caferli

Köycü

CýcýklarGülpýnar

Ekinciuþaðý

Kabacýoðlu

Akcamii

Yassýaðýl

Küçükboyalýk T.

1157

Cinli Kayalar996

981Ada T.

1087

Küçükboztepe

Alioðluarkacý T.1293

Arkaç T.1285

Büyükseraðbe T.1133

Tuðlu T.1143

Kale T.952

AA'

N

0 1 2Km

12

5

8

5

12

?

952

Alioðluarkacý T.

A'

A

B

Kanak Çayý

SWNE

NWSE

AA'

B B'

NE W900

100011001200

850950

1050

?

GEOLOGICAL MAP OF THE SW PART OF THE YOZGAT BATHOLITH,ÞEFAATLÝ-YERKÖY DISTRICT, SW YOZGAT, CA ANATOLIA, TURKEY

Formation boundary

Village

Uncharacterized fault

Strike-slip fault

Hill

River / stream

Road

Possible formation boundary

Geological crosssection line

strike and dip of bedding

(Lower-Middle Eocene)

Baþnayayla (Paleocene-Eocene ?)

Hacýmusalý

KTy Yassýaðýl Monzogranite

Adatepe quartz Monzonite

Akçakoyunluquartz monzodiorite

CankýlýMonzogabbro/Monzodiorite

unconformity

unconformity

unconformityHöke Limestone

Monzogranite

Microgranite

Diorite/GabbroTb

KTh

KTa

KTak

KTc

Th

KTk

unconformity

EXPLANATIONS

unconformityQuaternary alluviumQa

Karakaya

Akçakoyunlu

ÞEFAATLÝ (Mah.)Ýnceþehir

B

Karakaya

ST-CSD-1

ST-CSD-2

ST-CSD-3

ST-CSD-4ST-CSD-5

ST-CSD-6

ST-CSD-7

ST-CSD-8

ST-50

ST-29

ST-130

ST-131

ST-65

ST-159ST-58

ST-136

ST-106

ST-139

Page 10: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

ELMADAÐ KaracaaliKIRIKKALE

DikmendaðDikmendað

Balýþeyh

Karakeçili

Köprüköy

Yeniköy

SAVCILI

KAMAN

Hamit

Akpinar

Bala

KULU

Kesikköprü

0 10 20km.

40

39

1226

1808

Barana DaðýBarana Daðý

Mehmetsumra Dam

Aþaðýmahmutlar

Ahýlý

Hasandede

Ceritkale

KonurArmutlu

Danacýobasý

Çelebi

Kargýnyenice

Hirfanlar

33 34

00 0

0

Kýrþehir Ý31 a4Kýrþehir Ý31 a4

Kýrþehir Ý31 d1Kýrþehir Ý31 d1

Kýrþehir Ý31 d4Kýrþehir Ý31 d4

Kýrþehir J31 a1Kýrþehir J31 a1

Kýrþehir J31 a4Kýrþehir J31 a4

N

Hirfanlý Lake Dam

E

N

KESKÝN

KESKÝN

Hacýibiþ

Araplý

Kazýklý

Eminefendi

Çalýþ

Eskialibudak

Ortasöken

Konurhacýobasý

Danacýobasý

Ceritkale

KONUR

Kepirli

Müsellim

Ýðdebeli

Karahacýlý

Karayakup

Aþaðýþeyhköy

Yukarýþeyhköy

ÇELEBÝ

Karaaðaçköy

Karkýnselimaða

Hacýaraplý

Merdeþe

Tatýkköy

Kargýnyenice

Ekizler

Benzer

Kargýnkýzýközü

Yeniköy

Hirfanlar

Cabatobasý

Hacýaliobasý

KIRIKKALE

Ahili

Hasandede

Simlikurþun

71

57

58

59

60

62

63

6465

61

72

73 75

74

76

7879

80

81

82

83

84

85

86

87

8890

9192

93

94 95

9798

99

100

102

103

126

127

104

113

114

115

116

112

101

105

106

107108

109110

111

121120

119

118

117

128

132

134135

133

159

158

157

156

155

130131

129

122

123

124

176

177

228

227

138

137

178

224

223

136

225

217

216

215

212

211

218

219

194

193 191 192

183

182

181

180

199

198197

196

195

201

205202

206

203

204207

208

210 209

200

184

185

188

187

186

336

335

334

333

332

331

330

341

340

368

313

323

314

329

328

327

326

325

324

43

342

46

45

55

56

47

48

50

49

54

51

3537

34

32

33

31

30

27 11

12

13

23

22

14

15

16

17

18

19

20

8

7

40

41

42 382

6

39

5

4

3

1

2

38

316

318

322

321

319

317

373

370

369

258

260

261

262

263

245

244

246

264

242

243

235

267

374

234

241 233

375

232

231

389

388

265 269

268

236

237

257

256

249

247

286

295

371

296

297

287

288

226

372

289

239240

270

277271

272

279

278

284

280

281

282

302

298

299

300

301

303

360

361

363

396

311

310

387

307

308

292

293

294

306

304

283

283

377376

273

274

275

276

285

266

320

291

290

252253

254

259

255

250

248

251

289

10

384

383

385

315

52

2524

29

26

21

53

44

337

339338

189

190

179

214213

166

167

168

169

165

139

140

141

142

143144

145146

147

148

149

150

151

152

153

154

162

163

164

161

230

229

160

220

222221

175

173

174

171 170

172

125

96

70

68

67

66

69

89

77,77A

312

356

365

366

379

3671,2

367

397

398 399

358

353

343

346

345

344

348

347

364

355

357

354

380

380

350

351

352

CSD-1

CSD-2

CSD-3

JS-5

JS-4

JS-3

JS-1

JS-2

Kale H.

Tavþancýl H.

Kýzýl H.

Tilkiçoðu H.

Kýzdede H.

Kireçlik H.

Küçükçal H.

Kýzýlgüney H.

Dönedað

Küçükeðerli H.

Azapbayýrý H.

Ada H.

KIZILDAÐ

Tilkikuyu H.

Hüyüklüçat H.

Damýrcýoðlu H.

385

0 4 8 12 km

SCALE

Alluvium

GEOLOGY MAP OF THE BEHREKDAÐ BATOLITH ALONG A NORTH SOUTH

GEOTRAVERSE BETWEEN KIRIKKALE CITY AND HIRFANLI DAM

IN CENTRAL ANATOLIA, TURKEY

Kýzýlýrmak Formation

Baraklý Formation

Yeniköy Tonalite

Hasandede Quartz Syenite

Konur K-feldspar Megacrystalline

Quartz Monzonite

Danacýobasý Biotite Granite

Kýzdede Monzogabbro

Kýzýltepe Microgranite

Bozçaldað Formation

Tectonic Boundary

Unconformity

Unconformity

Unconformity

Fault

Formation Boundary

Strike and dip of bedding

Sample

EXPLANATIONS

Village

Road

Hill

K

Central Anatolian

Ophiolite

Pre Mesozoic

Upper Cretaceous

(Turonien-Santonien)

Upper Cretaceous

Upper Cretaceous

Early Paleocene (?)

Paleocene-

Middle Eocene

Upper Miocene-

Pliocene

Quaternary

Unconformity

Geological Cross Section Line

Crystal Size Distribution Samples

K-Ar Geochronology Samples

40

0545000 0550000

0545000 0550000

A

C’

A’

B’

B

C

Hirfanlý Uralite

Gabbro

Benzer Volcanics

Limestone

Arkoze

305

Hirfanlý Lake Dam

362

Yeniköy

395

391

390

386

309

394

Küpgediði H.

Page 11: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Pýnarbaþý

Afþin

40

Sivas

Maden

Keban

Hekimhan

Ovacýk

Arapkir

39

Akçadað

Malatya

Erzincan

Pötürge

36 38 40

Tunceli

Sarýz

N

ElazýðPost-collisional Gürün-Darende-Hekimhan

basins (Cretaceous-Eocene)

Post-collisionalSivas basin

(Oligo-Miocene)

km0 50 100

Page 12: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

70

A’

68

19

24

23

22

21

20

Çaltý Ç.

D-20D-19

DG-6

DG-1

D-45

DG-2,3DG-4,5

DG-7

+-

Divriði J 39-b2Divriði J 39-b3

Alluvium

Yamadað volcanics

Terrigenous-lacustrine sediments

Silica-carbonate rocks (Listwaenites)

Tectonic contact

Metasediments (calc-schist,chlorite-quartz schist)

Unconformity

Fault

Sample location

Operated iron deposit

DG-9

Karabaþ(Mah.)

21 20 22 23 MG-8

MG-7MG-6

MG-5 33 34

12

10 11

13 16 14 15 17

24 27

25

26 28

MG-1 18 29 Murmana

30 37 38

36

2 4

3 5

6 35

31

8 7 9

MG-9

42

41

Heyelan

Demirdað

PurunsurPlacerD-head

B-head

A-head

C-Placer C-Placer

MG-3

MG-4

1

Pengürt(Mah.)

D-18D-16,17

Unconformity

Felsic granitoid rocks

Mafic intrusive rocks

Serpentinizated ultramaficsSubophiolitic basement (chlorite schist, amphibole-schist, amphibolite)

Geochronological Sample location

Non-operated iron deposit

Munzur Limestone

Reverse Fault

Thrust fault

Village

Quaternary

Plio-Quaternary

Pliocene

Pre-Maastrichtian

Cretaceous-Carboniferous

Tectonic contact

Paleozoic

GEOLGY MAP OF THE MURMANA AND DUMLUCAGRANITOIDS, DÝVRÝÐÝ REGÝON, SE SÝVAS, TURKEY

07 09 11 13 15 17 19

50

52

54

56

58

60

62

64

66

N

0 2km

Page 13: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

48

AC-73AC-74

AC-73

38

4042

43

914544

52

92

5455

47

60

59

58

56

72

42 44 46 48

58

56

54

52

50

48

46

44

42

40

38

36

0 4km

Akusagi

22

NA-2123NA-1

NA-3NA-4AC-97

AC-95NA-26

NA-9

NA-25

NA-28NA-17

NA-19

NA-16

NA-18

NA-33

NA-31

AC-94

AC-93AC-71

NA-42

Aðýlköy

Duruköy

NA-10 NA-11

NA-35

NA-36

NA-40

Akpelit

Yeniköy

Bizmiþen(Gözaydýn)

Harmankaya

Akpýnar yaylasý

Ortaköy

AB-50

AB-49AB-88AB-87

AB-89

AB-53

Akuþaðý

NavrilNA-43

NA-32

N

1 km

Alluvium (Quaternary)

Kemah Formation(Early Miocene)

Munzur limestone(Carboniferous-Early Cretaceous)

Bizmiþen pluton(Middle Eocene)

Çaltý pluton(Middle Eocene)

Tectonic contact

Serpentinizated ultramafics

Terrestrial subvolcanics andvolcanics (Middle Eocene)

Listwaenitic zone(Middle Eocene)

Unconformity

Yamadað volcanics (andesties)(Early to Middle Miocene)

Yamadað volcanics (basalts)(Early to Middle Miocene)

Fault

Thrust fault

Possible fault

Unconformity

Unconformity

Sample location from Bizmiþen plutonAB-87

Sample location from Çaltý pluton

AC-95

40 Sample location from Çaltý plutontaken after Avcý and Boztuð (1993)

Page 14: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

K/Ar dating was preformed on well-preserved igneous provinces associated with various stages of the neo-Tethyan closure in the northeastern, central and central-eastern Anatolia, Turkey. The pre-, syn- to post-collisional convergence between the Eurasian plate and Tauride-Anatolide platform are responsible for igneous bodies of Cretaceous to early Tertiary age.

Page 15: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

1. late Cretaceous to early Paleocene arc-related I- type granites, 2. late Cretaceous syn-collisional S-type granites, 3. late Cretaceous post-collisional distensional-related high-K calcalkaline I-type monzonites, 4. late Cretaceous to Paleocene post-collisional distesional-related

(I) ALKOS felsic A-type (II) ALKUS mafic A-type intrusives,

5. Paleocene post-collisional distensional-related ALKOS A-type syenites-monzonites

6. middle to late Eocene post-collisional extensional-related calcalkaline I-type granodiorite-tonalites.

Page 16: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

In order to get the cooling age of some of these granitoids units, mineral separates, consisting of biotite, hornblende and their mixture have been dated using K-Ar method at the Geological Survey of Israel, Jerusalem.

Page 17: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Group & Unit n Type Mineral

Low Age (Ma)

High Age (Ma)

Geodyanamics

1 Boğalı mzgr 4 I-type hb 61.4 + 1.47 75.7 + 1.55 subductional

2 Felahiye bio gr 5 S-type bio 64.8 + 1.30 74.1 + 1.60 syn-collisional

Danacıobası bio leugr 2 S-type bio 68.8 + 0.50 71.3 + 0.30 syn-collisional

3 Felahiye hb-bio gr 2 I-type hb+bio

66.3 + 1.40 73.7 + 1.60 post-col. distension

Karakaya mzgr (Yozgat) 2 I-type hb+bio

72.0 + 1.50 77.0 + 1.60 post-col. distension

Yassıağıl mzgr (Yozgat) 2 I-type hb+bio

62.4 + 1.30 71.9 + 1.50 post-col. distension

Cankılı mzgo/mzd (Yozgat) 2 I-type hb+bio

58.2 + 1.20 73.5 + 1.60 post-col. distension

Akçakoyunlu qmzd (Yozgat)

2 I-type hb+bio

68.3 + 1.40 68.7 + 1.40 post-col. distension

Konur qmz (Behrekdağ) 2 I-type hb 64.3 + 1.30 75.6 + 1.50 post-col. distension

4 (I) Dumluca mz-sy (felsic-Divriği)

4 A-type bi+hb 72.8 + 1.80 77.9 + 1.60 post-col. distension

Murmana mz-sy (felsic-Divriği)

3 A-type bi+hb 74.07 + 1.52

77.2 + 1.80 post-col. distension

4 (II) Dumluca mzgo (mafic-Divriği)

5 A-type hb+bi 67.8 + 0.40 74.5 + 1.00 post-col. distension

Murmana mzgo (mafic-Divriği)

6 A-type hb+bi 62.1 + 0.30 77.4 + 1.50 post-col. distension

Kızdede mzgo (Behrekdağ) 2 A-type hb 72.0 + 0.50 72.53 + 1.56

post-col. distension

5 Hasandede qsy (Behrekdağ)

2 A-type hb 56.60 + 1.20

63.30 + 1.40

post-col. extension

6 Uzuntarla gd 2 I-type hb 41.2 + 0.89 42.4 + 0.87 post-col. extension

Çaltı gd 3 I-type hb 38.70 + 0.81

43.7 + 0.90 post-col. extension

Bizmişen gd 3 I-type hb 41.1 + 0.90 49.2 + 1.20 post-col. extension

Page 18: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

The results support and confirm the spatial and temporal relationship between igneous activity and geodynamics of the Neo-tethyan convergence system in NE and central Anatolia, as suggested by some works.

Page 19: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

extension

post collisiondistension

post collision

syn collision

subduction

40 50 60 8070

AGE ( Ma)

Pontides

Pontides & Anatolides

Anatolides

Page 20: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

These ages indicate that syn-collisonal compressional regime prevailed in Central Anatolia during the Senonian leading to the formation of S-type, peraluminous granitic association when the northward subduction was going on by producing the extensional-arc magmatism which has ceased in the early Palaeocene in NE Anatolia.

Page 21: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

The post-collisonal distensional regime seems to occur between late Cretaceous to early Paleocene. This stage induced •I-type, high-K calcalkaline hybrid magma source with a contribution of co-eval underplating mafic magma interacting with crustal felsic magma.•the within-plate, A-type bi-modal intrusive has been formed from two distinct magma sources crustal-derived felsic and mantle-derived mafic components which have also been affected by magma mingling and mixing processes.

Page 22: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

The main difference in the genesis of the I- and A-type magma sources in the same geodynamics and time span can be attributed either by the type and degree of partial melting or by the composition of source material (mantle or crust)

Page 23: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

extension

post collisiondistension

post collision

syn collision

subduction

40 50 60 8070

AGE ( Ma)

Pontides

Pontides & Anatolides

Anatolides

Page 24: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

O and S isotope geochemistry of O and S isotope geochemistry of some S-I-A type granitoids derived some S-I-A type granitoids derived

from the syn- to post-collisional from the syn- to post-collisional stages of the Neo-Tethyan stages of the Neo-Tethyan

convergence system in central convergence system in central Anatolia, TurkeyAnatolia, Turkey

Durmuş Boztuğ* and Greg B. Arehart**Durmuş Boztuğ* and Greg B. Arehart***Dept. of Geological Engineering, *Dept. of Geological Engineering,

Cumhuriyet University, 58140 Sivas, TurkeyCumhuriyet University, 58140 Sivas, Turkey**Department of Geological Sciences, **Department of Geological Sciences,

University of Nevada, Reno, 89557-0138University of Nevada, Reno, 89557-0138

Page 25: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Kýrþehir

Niðde

Giresun

Felahiye

Keban

Divriði

SivasAnkara

Kaman

Ýliç

Yahyalý

TrabzonRize

Artvin

ÝspirGümüþhane

0 100km

a

31 33 35 37 39 41

42

41

40

39

38

BLACK SEAN

Yozgat

Subduction-related intrusives(Senonian to early Palaeocene)

Collision-related intrusives(Campanian to middle-late Eocene)

Fault Thrust fault

1,6

32,3,4,5

2

44

6

6

Kýrýkkale

Kemaliye

Araklý

Page 26: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Kýrþehir

Niðde

KebanDivriði

SivasAnkara

Trabzon

100km

a

31 33 35 37 39 41

42

41

40

39

38

BLACK SEAN

Yozgat

Figure 2Figure 3

Page 27: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

37

TUZ GÖLÜ

Aksaray

Nevþehir

Þefaatli

Kýrþehir

Karamadazý

Kayseri

Çiçekdað

Pýnarbaþý

40

39

3833 34 35 36

Yýldýzeli

Akdaðmadeni

Yozgat

(SALT LAKE)

Çelebi

Kaman

BeyobasýKýrýkkale

Felahiye

0 40 km

N

Paleocene- Eocene sediments

Neogene sediments

Late Cretaceous S-type leucogranites derivedexclusively from supracrustal rocks

Late Cretaceous I-type felsic granitoids derivedfrom a hybrid source generated by mixing typeinteraction between underplating mafic magmaand crustal felsic magma

Late Cretaceous M-type mafic intrusives mostly derived from underplating mafic magma which is co-eval with felsic I-type granitoid magma

L.Cretaceous-E.Tertiary A-type within-plate rifting related alkaline felsic granitoids

Paleozoic Tauride autochtonous

Pre-Mesozoic metasediments of the CACC

J urassic- Cretaceous limestone

Neo-Tethyan Ophiolitic melange (Late Cretaceous)

Paleo-Tethyan Ophiolitic melange (Permo-Triassic)

Page 28: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Pýnarbaþý

Afþin

40

Sivas

Maden

Keban

Hekimhan

Ovacýk

Arapkir

39

Akçadað

Malatya

Erzincan

Pötürge

36 38 40

Tunceli

Sarýz

N

ElazýðPost-collisional Gürün-Darende-Hekimhan

basins (Cretaceous-Eocene)

Post-collisionalSivas basin

(Oligo-Miocene)

km0 50 100

Page 29: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Feldspars and/or quartz grains were analyzed for plutons from each of these suites, and are considered representative δ18OVSMOW values of average pluton.

Page 30: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Analyses were done at the University of Nevada, Reno, USA using laser-assisted fluorination techniques; mass spectrometry was done on a Micromass Prism using O2 gas as the analyte. Precision on individual analyses is ± 0.15‰.

Page 31: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Total sulfur was extracted from whole-rock powders using the Kiba method (ref) and sulfur isotope analyses performed on a continuous-flow Micromass Prism mass spectrometer using SO2 gas as the analyte. Precision on sulfur isotope analyses is ± 0.25‰.

Page 32: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Group & description δ18OVSMOW σ n δ34SVCDT σ n

1 Felahiye (bio granite)

14.15 1.45 5 13.2 1.9 5

1 Danacıobası (bio leucogranite)

10.54 0.26 2

1 Felahiye (hbl granite)

11.23 1.15 2 8.6 2.3 3

2 Yozgat batholith

Cankılı monzogabbro

11.75 1.55 2 5.6 4.0 2

Akçakoyunlu qtz monzodiorite

11.90 0.68 2 3.3 1.0 2

Yassıağıl monzogranite

13.45 0.38 2 12.4 2.8 2

Karakaya monzogranite

13.63 0.05 2 5.5 1

Adatepe qtz monzonite

11.15 0.64 2 7.0 1

2 Behrekdağ batholith

Konur qtz monzonite

11.57 0.91 9

Page 33: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Group & description δ18OVSMOW σ n δ34SVCDT σ n

3 (I) A-type bimodal suites

Dumluca felsic 10.51 0.51 3 4.7 0.7 3

Murmana felsic 11.66 0.97 3 15.7 1.2 3

3 (II) A-type bimodal suites

Dumluca mafic 8.21 0.51 5 2.4 1.4 3

Murmana mafic 9.59 1.48 5 7.4 2.8 6

4 Behrekdağ batholith

Hasandede qtz syenite 10.53 0.85 3

5 Çaltı 8.85 0.76 4

5 Bizmişen 7.79 0.19 5

Page 34: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

5 131197 15 17

3

1

Felahiye

m = 11.23std = 1.15n = 2

m = 14.15std = 1.45n = 5

Hb-bio granite Bio granite

O

Page 35: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

5 131197

5

3

1

Danacýobasý

m = 10.54std = 0.26n = 5

O

Page 36: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Yozgat

5 131197 15

5

3

1

Cankýlý

Akçakoyunlu

Yassýaðýl

Karakaya

Adatepe m=11.15, std=0.64, n=2

m=11.90, std=0.68, n=2

m=11.75, std=1.55, n=2

m=13.45, std=0.38, n=2

m=13.63, std=0.05, n=2

O

Page 37: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Konur Quartz Monzonite

5 131197 15

5

3

1

m = 11.57std = 0.91n = 9

O

Page 38: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Hasandede

Dumluca

Murmana

Mafic

Felsic

5 131197

5 131197

5 1197

5 131197 15

1

3

1

3

1

m=8.21, std=0.51, n=5

m=10.51, std=0.51, n=3

Mafic

Felsic

m=9.59, std=1.48, n=5

m=11.66, std=0.97, n=3

m = 10.53std = 0.85n = 3

O

Page 39: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

O

Çaltý

Bizmiþen

5 131197

5

3

1

5 1197

3

1

5 131197

m = 8.85std = 0.76n = 4

m = 7.79std = 0.19n = 5

O

Page 40: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

Felahiye

5 131197 151 3

1

m = 8.60std = 2.30n = 4

m = 13.20std = 1.90n = 5

Hb-bio granite Bio granite

S

Page 41: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

S

Yozgat

5 131197 151 3

1

Cankýlý

Akçakoyunlu

Yassýaðýl

m=3.30, std=1.00, n=2

m=5.60, std=4.0, n=2

m=11.14, std=2.80, n=2

Page 42: K/Ar dating of granitoids unravelling stages of the Neo- Tethyan convergence in the eastern Pontides and central Anatolia, Turkey D. Boztug* and Y. Harlavan**

S

Dumluca

5 131197 15 171 3

1

Murmana

5 131197 15 171 3

1

Mafic

Felsic

m=2.40, std=1.40, n=3

m=4.70, std=0.70, n=3

Mafic

Felsic

m=7.40, std=2.80, n=6

m=15.70, std=1.20, n=3

S