F6 Elective 1 types of rocks

Multiple Select

Which of the following metamorphic rocks have foliated structure?

• Gneiss

• Quartzite

• Slate

• Marble

​p.10

​p.11

​with

​Pin

​p.12

​p.12

​display flow bands

What causes hexagonal rock columns? | Nature ROCKS! | By BBC

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​p.10

​with

​p.12

​-----p.12

​-----------p.15-16

​Identify the drainage pattern in Tai Lam Chung Valley.

Draw

Identify the drainage pattern of Tai Lam Chung Valley.

Besides the major fault system, small-scale faults are common in Hong Kong. Do you know what kind of fault it is?

Multiple Choice

Do you know what kind of fault it is?

• Reverse fault

• Normal fault

• Transform fault / tear fault

How about folding?

​------p.15

​------p.12

​They are floodplains formed by fluvial deposition at the lower course of rivers.

Open Ended

Name the largest river in Kong Kong.

MCQ​

​

Multiple Choice

p.1 1991 CE Q11

• A

• B

• C

• D

Multiple Choice

p.2 1992 CE Q3

• A

• B

• C

• D

Multiple Choice

p.2 1992 CE Q5

• A

• B

• C

• D

Multiple Choice

p.2 1992 CE Q6

• A

• B

• C

• D

Multiple Choice

p.3 1993 CE Q4

• A

• B

• C

• D

Multiple Choice

p.3 1994 CE Q4

• A

• B

• C

• D

Multiple Choice

p.5 1995 CE Q8

• A

• B

• C

• D

Multiple Choice

p.5 1995 CE Q12

• A

• B

• C

• D

Multiple Choice

p.8 1998 CE Q12

• A

• B

• C

• D

Multiple Choice

p.8 1998 CE Q13

• A

• B

• C

• D

Multiple Choice

p.9 1999 CE Q18

• A

• B

• C

• D

Multiple Choice

p.10 2000 CE Q14

• A

• B

• C

• D

Multiple Choice

p.14 2001 CE Q19

• A

• B

• C

• D

Multiple Choice

p.14 2001 CE Q20

• A

• B

• C

• D

Multiple Choice

p.14 2002 CE Q15

• A

• B

• C

• D

Multiple Choice

p.15 2002 CE Q17

• A

• B

• C

• D

Multiple Choice

p.17 2003 CE Q12

• A

• B

• C

• D

Multiple Choice

p.18 2004 CE Q14

• A

• B

• C

• D

Multiple Choice

p.18 2004 CE Q15

• A

• B

• C

• D

Multiple Choice

p.18 2004 CE Q16

• A

• B

• C

• D

DBQ​

2015​

Multiple Choice

(i) Identify the rock type.

• intrusive igneous

• extrusive igneous

• sedmentary

• metamorphic

Open Ended

(ii) State the characteristics of the rock type. (2 marks)

​DBQ

2016

Multiple Choice

(i) Identify rock type X.

• intrusive igneous

• extrusive igneous

• sedmentary

• metamorphic

​DBQ

2018​

Fill in the Blank

Name the rock shown in Photograph 1b.

​DBQ

2024

Fill in the Blank

Name clastic sedimentary rock P.

Fill in the Blank

Name clastic sedimentary rock Q.

Multiple Choice

(i) Identify rock type Y.

• intrusive igneous

• extrusive igneous

• sedmentary

• metamorphic

Open Ended

(ii) Explain how rock type Y affects the relief of Lantau Island. (2 marks)

​How volcanic rocks affect the relief of Lantau Island.

​They produce high hills with angular peaks, rugged relief and steep gradient.

​it is because they are fine-grained and crystalline structure make them compact and resistant to weathering and erosion.

​DBQ 2019

​

Open Ended

(a) Identify Rock P.

Open Ended

(a) Identify Rock Q.

Open Ended

(a) Compare the formation and characteristics of the two types of rocks.

​Compare the formation of Rocks P and Q.

• ​Rock P is formed by extrusive vulcanicity (1) while Rock Q is formed by intrusive vulcanicity. (1)

• ​Rock P is formed by fast cooling and solidification (1) of lava and ashes (1) while Rock Q is formed by slow cooling and solidification (1) of magma. (1)

• ​​​Rock P is fine-grained (1) while Rock Q is coarse-grained. (1)

2016 DSE​

​

Open Ended

(a)(i) Name the rock shown in Photograph 1b.

Multiple Choice

(a)(i) At which location, area A or B is the rock located?

• Area A

• Area B

Open Ended

(a)(ii) Explain the formation of the rock.

2014 DSE​

Open Ended

(a)(i) Describe the characteristics of the tock type in Ma Shi Chau. (3 marks)

​characteristics of sedimentary rock

• ​layered structure / stratified structure

• ​may contain fossils

• ​less resistant to weathering / erosion

• ​fine-grained rock

• ​old sedimentary rock

• (p.47-49 textbk)​

Geological History and Hong Kong Rocks - Hong Kong Geology

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Open Ended

(a)(ii) Explain the fromation of that type of rock (5 marks)

​Formation of sedimentary rock

• ​breakdown of pre-existing rock by denudation (e.g. weathering)

• ​transportation

  sediments deposited at shallow water

• ​sorting of sediments occur

• ​sedimentation / deposition occurred

• ​sediment layers are squeezed under compaction

• ​dissolved minerals glue the grains tightly under cementation

• ​loose sediments are changed into sedimentary rock under lithification