after 7.5 mins, 1 st p wave arrived at new york. eas 220 lab 4: igneous rocks

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After 7.5 mins, 1 st P wave arrived at New York

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Page 1: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

After 7.5 mins, 1st P

wave arrived at New York

Page 2: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

EAS 220 Lab 4: Igneous Rocks

Page 3: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Today’s Lab•3 Parts:

• Introduction

•How igneous rocks form

• textures

•Bowen’s Reaction series

• Igneous Rock Identification

•Hand samples

•Thin sections

Page 4: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Formation of Igneous Rocks

Page 5: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Textures

•Aphanitic

•Phaneritic

•Porphyritic

•Vesicular

•Glassy

Page 6: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Aphanitic

Page 7: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Phaneritic

Page 8: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Porphyritic

Page 9: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Vesicular

Page 10: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Glassy

Page 11: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Bowen’s Reaction Series

Page 12: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Classification Scheme

Page 13: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Intrusive Rocks and Extrusive Equivalents

Page 14: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Petrographic Microscopes: Minerals in thin section

Page 15: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Minerals

•Quartz

•Feldspars

•Micas

•Pyroxene

•Olivine

•Hornblende

Biotite

Quartz

MuscoviteOlivine

Page 16: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Quartz

Page 17: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Feldspar

Page 18: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Muscovite/Biotite

Page 19: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Pyroxenes

Page 20: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Olivine

Page 21: After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks

Hornblende (Amphibole)