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OCR: Quaternary The several geologic eras were originally Pcrioc named Primary Secondary Tertiary oue CENOZOIC ERA Quaternary The first two names arc no Age of Lifc) Tertiary been longer 'pasn retained but Tertiary used and as perioa Quaternary have Recent Period designations Derived from Latin word for chalk (creta) Cretaceou and first applied to extensive deposits Period that orm white cliffs along the English Channel. MESOZOIC ERA Jurassic Named for the Jura Mountains located (Age of Period between France and Switzerland where Medieval Life) rocks of this aqe were first studied Triassic Taker from the word "trias" recognition Period of the threefold character these rocks in Europe Pcrmiar Named after the .province of Perm S.S.R. Period where these rock were first studied Named for the State ...