20 Terms
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Geology
The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.
Industry: Earth science
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Geology
Chert
Earth science; Geology
A very fine-grained sedimentary rock made of quartz. Usually made of millions of globular siliceous skeletons of tiny marine plankton called radiolarians. Black chert is called flint.
Clay
Earth science; Geology
A family of platy silicate minerals that commonly form as a product of rock weathering. Also, any particle smaller than 1/256 of a millimetre in diameter.
Cenozoic Era
Earth science; Geology
The time span between 66.4 million years ago to the present. he Cenozoic contains the Tertiary and the Quaternary periods.
Cinder cone
Earth science; Geology
A volcanic cone built almost entirely of ejected cinders, loose volcanic fragments, ash, and pumice (pyroclastics or tephra).
Cinder
Earth science; Geology
A bubbly (vesicular) volcanic rock fragment that forms when molten, gas-filled lava is thrown into the air, then solidifies as it falls.
Clastic
Earth science; Geology
A volcanic cone built almost entirely of ejected cinders, loose volcanic fragments, ash, and pumice (pyroclastics or tephra).
Eocene
Earth science; Geology
An epoch of the Tertiary period, spanning the time between 54.8 and 33.7 million years ago.
