Alpine Schist

Question 1

Terrane

Answer 1

Aspiring (and Torlesse)

Question 2

Protolith

Answer 2

Otago Schist Protolith,

Question 3

Main Lithologies

Answer 3

Greyschist

Question 4

Depositional Age of Protoliths

Answer 4

~108 Ma

Question 5

Age of Metamorphism

Answer 5

~78 Ma (90-70 Ma)

Question 6

Grades of Metamorphism Exposed

Answer 6

Greenschist to Amphibolite

Question 7

Zones

Answer 7

Greenschist _ chlorite, biotite garnet Amphibolite _ oligoclase
Increasing grade towards the fault

Question 8

Key Index Minerals for Different Grades

Answer 8

Chlorite, Biotite, Garnet, Oligoclase, Actinolite, Amphibole

Question 9

Time that the Unit Reached the Surface:

Answer 9

Late Cretaceous _ late Cenozoic