Tableland, large flat elevated areas sitting above cliffs, is sometimes called what?

Question

What large, flat valley that dominates the central portion of the state of California USA and stretches approximately 800 kilometres (500 miles) has the northern half called the Sacramento Valley, and the southern half the San Joaquin Valley, which meet at the Sacramento-San Joaquin River Delta?

Answer 1

Mesa
Mesas are formed by weathering and erosion of horizontally layered rocks. Examples are found all round the world, from USA, South Africa, to Sardinia and Argentina, and on Mars.