2. Famous Rocks By Luke Davis Year 4 2012

3. The Breadknife Is a rare, straight wall of jagged rock, nearly 100m high and 600 m long. The base of the mountain is made of sandstone while the rocky outcrops are the remains of the liquid lava of a shield volcano. The sandstone was formed 180 million years ago. The volcano was active 18-15 million years ago. Volcanic activity and erosion have created the shape of the Breadknife. The breadknife is located in the Warrumbungle Nation Park in NSW. The breadknife is located in the Warrumbungle Nation Park in NSW. Coonabarabran is the closest town to the national park. Coonabarabran is the closest town to the national park. The breadknife is only 1 metre thick. The breadknife is only 1 metre thick.

4. The Giant’s Causeway The giants causeway is an area of 40 000 interlocking basalt columns. The tallest column is 12m. The giants causeway is made of basalt. During the tertiary period some 62 to 65 MYA igneous activity formed the giants causeway. Lava flowed into a valley. When it cooled it made columns. Many columns have names the giants boots, camel humps and the chimney stacks. the giants boots are below.

5. Rock of Gibraltar It is 426m high. It has a steep northern side that slopes towards sandy planes to the south. It is 426m high. It has a steep northern side that slopes towards sandy planes to the south. It’s a single limestone rock, which is greyish-white or pale grey. It’s a single limestone rock, which is greyish-white or pale grey. Earthquake movement has turned the layers of rock upside down so that the older rock is on the top. The shape has been eroded by wind. Earthquake movement has turned the layers of rock upside down so that the older rock is on the top. The shape has been eroded by wind. The rock was created in the early Jurassic period,175- 200 million years ago. The rock was created in the early Jurassic period,175- 200 million years ago. There are over 100 caves in the rock of Gibraltar. There are over 100 caves in the rock of Gibraltar. Archaeologist have found proof that Neanderthals used some of these caves 30 000 years ago. Archaeologist have found proof that Neanderthals used some of these caves 30 000 years ago. Geologists have found many marine fossils inside the layers of rock. Geologists have found many marine fossils inside the layers of rock.

6. Khufu’s Great Pyramid Khufu’s great pyramid (the one on the right) is 146m tall and 230m around each side of its base. Some of the limestone was stripped so now it’s 137m tall and 227m around each side of its base. Khufu’s great pyramid (the one on the right) is 146m tall and 230m around each side of its base. Some of the limestone was stripped so now it’s 137m tall and 227m around each side of its base. The pyramid was made of limestone heavier than elephants. The pyramid was made of limestone heavier than elephants. It was built 4 600 years ago. It was built 4 600 years ago. King Khufu ordered 100 000 slaves to build it. King Khufu ordered 100 000 slaves to build it. The pyramid itself is 6 250 000t. The pyramid itself is 6 250 000t. If you stood on the moon you could see the pyramid. If you stood on the moon you could see the pyramid. The slaves worked 3 months a year for twenty years. The slaves worked 3 months a year for twenty years.