Geology Of Auckland (Lab 1)

Question 1

Sedimentary rock

Answer 1

Pieces of rock that have settled from water or when minerals are deposited by plants, animals etc. Layers

Question 2

Metamorphic rock

Answer 2

Rocks that have been heated and condensed but not melted. Heat and pressure

Question 3

Igneous Extrusive rock

Answer 3

Molten rock that’s flowed on the land’s surface or thrown into the air and then cooled.

Question 4

Igneous Intrusive rock

Answer 4

Molten rock that has cooled while still underground.

Question 5

Aggregate

Answer 5

Collection of particles

Question 6

Cement

Answer 6

Minerals that bind to boundaries of other minerals

Question 7

Compaction

Answer 7

Reduction of porosity as a force is applied to an aggregate

Question 8

Basalt (extrusive and volcanic)

Answer 8

Fine grained, dark, igneous

Question 9

Gabbro (intrusive and plutonic)

Answer 9

coarse grained, dark coloured, igneous

Question 10

Granite (intrusive and plutonic)

Answer 10

fine grained, pink and grey, quartz

Question 11

List some minerals that can be found in metamorphic rocks

Answer 11

Quartz, calcite, garnet, kyanite, staurolite, chlorite and andalusite

Question 12

Slate

Answer 12

Mudstones, low-grade metamorphism

Question 13

Schist

Answer 13

medium-grade, metamorphic, schistose foliation

Question 14

Gneiss

Answer 14

high-grade metamorphic, alternating layers, different minerals

Question 15

What happened to Auckland in the Miocene period?

Answer 15

Waitemata basin, waitakere and kaipara volcanoes erupt, Auckland lifted out of the sea, and volcanoes erupt (Leigh, Waiheke and Great Barrier)

Question 16

What occurred in the Pliocene?

Answer 16

Hauraki Gulf, firth of thames subsides

Question 17

Pleistocene?

Answer 17

Volcanoes erupt in South (Pleistocene) and Central Auckland (Pleistocene to modern day)