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Table 2 Collected hand samples from the Rotondo granite used for thin section investigation by optical microscopy

From: Geology along the Bedretto tunnel: kinematic and geochronological constraints on the evolution of the Gotthard Massif (Central Alps)

TM

Wall

Sample name

Description

ZI

1156

NE

B19-1156

Equigranular granite

 

1258

NE

B20-1258

Equigranular granite

 

1350

NE

B19-1350

Granitic shear zone

 

1417

NE

B19-1417

Equigranular granite

\(\times\)

1755

NE

B20-1755

Equigranular granite

 

2253

SW

B20-2253

Equigranular granite

 

2742

SW

B20-2742

Equigranular granite

 

2801

NE

B20-2801

Quartz-biotite-rich shear zone

\(\times\)

2801

SW

B20-2801-2

Quartz-biotite-rich shear zone

 

3145

SW

B20-3145

Porphyritic granite

 

3147

SW

B20-3147

Quartz-biotite-rich shear zone

 

3147

SW

B20-3147-1

Quartz-biotite-rich shear zone

 

3147

NE

B20-3147-2

Quartz-biotite-rich shear zone

 

3155

NE

B20-3155

Enclave in granite

 

3247

SW

B20-3247

Porphyritic granite

\(\times\)

3320

NE

B20-3320

Aplitic dyke

 

3375

NE

B20-3375

Enclave in granite

 

3380

NE

B20-3380

Enclave in granite

 

3385

NE

B20-3385

Porphyritic granite

 

3615

NE

B20-3615

Enclave in granite

 

3751

NE

B20-3751

Equigranular granite

 

4173

NE

B20-4173-2

Quartz-biotite-rich shear zone

 

4173

SW

B20-4173-1

Quartz-biotite-rich shear zone

 

4182

SW

B20-4182

Enclave in granite

 

4191

SW

B20-4191

Aplitic dyke

 

4253

SW

B20-4253

Equigranular granite

 

4367

SW

B20-4367

Enclave in granite

 

4384

NE

B20-4384

Enclave in granite

 

4759

NE

B20-4759

Equigranular granite

 

5158

SW

B20-5158

Equigranular granite

 
  1. Samples used for zircon investigations are marked with ‘\(\times\)’ in the corresponding column (ZI). The uncertainty in the TM-measurements is about \(\pm 1\) m