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Subject
- Cretaceous Geologic Period1
- Crust of the Earth--Research1
- Dust1
- Heat--Convection1
- Intertropical convergence zone1
- Iron1
- Jurassic Geologic Period1
- Lithosphere1
- Magmas--Composition1
- Metamorphic rocks1
- Meteorology1
- Paleoceanography1
- Paleontology1
- Petroleum reserves1
- Petrology1
- Proterozoic Geologic Period1
- Sedimentary rocks--Analysis1
- Strontium--Isotopes1
- Volcanism--Research1