ROCKS - The Basics 0.0 / 5 ? GeographyRock landscapes and processesGCSEAQA Created by: NCBCreated on: 03-06-13 19:16 In which periods did Clay form? The Quaternary, Tertiary, Jurassic, Triassic, and Permian 1 of 5 In which period did Chalk form? the Cretaceous 2 of 5 In which period did Carboniferous Limestone form? The Carboniferous period 3 of 5 In which periods did Granite form? The Devonian, Silurian, Ordovician, Cambrian and Pre-Cambrian 4 of 5 How long ago was the Cambrian period? 570 million years 5 of 5
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