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6. Which of the following is the youngest Pre-Cambrian rock type?
- Torridchian Sandstone
- Moine Schist
- Lewisian Gneiss
7. What is the half life decay of carbon 14
- 5730 years
- 3700 years
- 1345 years
- 7530 years
8. What is the daughter isotope of 238U
9. What is the correct order of age (youngest to oldest) of these carboniferous rocks.
- Coal measures, millstone grit, limestone series
- Millstone grit, limestone series, coal measures
- coal measures, limestone series, millstone grit
10. What is the correct order of the geological time periods?
- cambrian, ordivician, silurian, devonian, carboniferous, permian, triassic, jurassic, cretacrous, eocene, oligocene, miocene, pleiocene, pleistocene, holocene
- ordovician, holocene, cambrian, carboniferous, cretaceous, eocene, devonian, silurian, permian, jurassic, oligocene, triassic, pleiosene, miocene, pleistocene
- Holocene, pleistocene, pleiocene, miocene, oligocene, eocene, cretaceous, jurassic, triassic, permian, carboniferous, devonian, silurian, ordovician, cambrian
11. which rock is a fine grained, extrusive igneous rock dominated by hornblende and augite?
- Granite
- Diorite
- Basalt
- Felsite
12. Which of the following are all layer silicate minerals?
- quartz, feldspars, pryoxenes, amphiboles, olivine, garnet.
- hematite, quartz, silica, potassium feldspar, talc, chert
- Galena, quartz, gypsum, muscovite, halite, barytes, iron pyrites