In which of the following igneous rocks and environments would you expect to find unusually high concentrations of rare elements such as lithium, beryllium, and boron?

Which of the following best describes the Earth system?

Which of the following correctly describes the difference between ferromagnesian and nonferromagnesian silicates?

Which best describes the difference between an end moraine and a ground moraine?

Chemical sedimentary rocks are classified (named) based on the ________.

________ is a strong, parallel alignment of coarse mica flakes and/or of different mineral bands in a metamorphic rock.

________ was the highly influential, ancient Greek philosopher noted for his writings and teachings on natural philosophy and on the workings of the Earth.

________ often contain gem-quality crystals of minerals such as beryl and tourmaline and high concentrations of relatively rare elements such as lithium, boron, and beryllium?

________ is a strong, parallel alignment of coarse mica flakes and/or of different mineral bands in a metamorphic rock.

Which one of the following statements concerning glacial deposits is NOT true?