Sydney Basin

High school (ages 12+)
Geography

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/sydney-basin

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the location?Eastern New South Wales, Australia
2. What is the age of rocks?Permian and Triassic periods (approx. 250-200 million years old)
3. Why do the Blue Mountains have steep cliffs?The upper sandstone layers from the Triassic period are very strong and resist erosion. Water and wind carve dramatic escarpments, mesas, and canyons into these rocks.
4. How did Sydney Harbour form?Sydney Harbour is a drowned river valley, called a ria, that was carved into the basin's sandstone. Later, sea level rose and filled the valley with water.

Structural Basin: A large-scale depression in the Earth's crust where sediments accumulate.
Stratigraphy: The study of rock layers and their sequence, composition, and age.
Geomorphology: The study of landforms, their origin, and the processes that shape them.
Paleontology: The scientific study of fossils and ancient life.