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- Paleomagnetism
- one of the many scientific specialties within geology that concerns itself with understanding ancient magnetic phenomena and products
- Paleontology
- the study of past life forms and the history of life
- Paleozoic era
- the period of time stretching form approximately 225 to 570 million years ago. The beginning of the paleozoic coincides with the development of metazoan life. The development of the backbone and both plant and animal life on the continent occurred during this era
- Pangaea
- Wegener proposed this name for the hypothetical supercontinent that formed at the end of the Paleozoic era
- Peat
- the lowest rank of coal; slightly altered, partially decayed plant material, often quarried from bogs
- Permeability
- the percentage of interconnected pores in natural materials; or the ease of passage of fluids through material
- Pitchblende
- black mineral; one of the most important ore minerals of uranium
- Plutonium (Pu)
- a radioactive metallic element produced from uranium during the operations of nuclear reactors; capable of fission
- Porous
- any material containing pores. Porosity is percent pore space in material.
- Potash
- any of the potassium salts, such as potassium chloride, mined and used as fertilizers; also refers to substances such as sodium carbonates produced from wood ashes and used as soaps and dyes; potassium oxide; potassium hydroxide
- Potassium
- a soft, silvery metal found in nature only in combination with other elements; it is one of the lightest, most reactive metals and rapidly oxidizes in air
- Precambrian era
- all geologic time before the Paleozoic era
- Prospector
- a person that explores or examines an area of the earth for minerals or orebodies
- Protons
- the positively charged particles within the nucleus of the atom
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