[DOC] [TLE] Geologic Time Scale: Major Eons, Eras, Periods and Epochs - Video ... [PAR]  [DOC] [TLE] Geologic Time Scale - Major Divisions of Geologic Time Chart [PAR] Precambrian. For many years, the term "Precambrian" was used for the division of time older than the Phanerozoic. For consistency with the time scale in Hansen (1991), the term "Precambrian" is considered to be informal and without specific stratigraphic rank (although it is here capitalized). [DOC] [TLE] Geologic Time: Major Divisions of Geologic Time [PAR] Aug 27, 1999 ... Major Divisions of Geologic Time. The major divisions, with brief explanations of 
each, are shown in the following scale of relative geologic time... [DOC] [TLE] Divisions of Geologic Time Major Chronostratigraphic - USGS ... [PAR] U.S. Geological Survey. Fact Sheet 20073015. March 2007. Divisions of 
Geologic Time. Major Chronostratigraphic and Geochronologic Units. 
Introduction. [DOC] [TLE] History of Geologic Time Scale [PAR] The history of the earth is broken up into a hierarchical set of divisions for describing geologic time. As increasingly smaller units of time, the generally accepted divisions are eon, era, period, epoch, age. In the time scale shown at left, only the two highest levels of this hierarchy are represented. [DOC] [TLE] Geologic time scale - University of California Museum of Paleontology [PAR] Use the links in the "time machine" below and explore a specific period that ... 
Read more about the geologic time scale, its origins and its time divisions. Find 
out... [DOC] [TLE] Geologic time scale - Wikipedia [PAR] The geological time scale (GTS) is a system of chronological dating that relates 
geological ...... "16: A Chronostratigraphic Division of the Precambrian: 
Possibilities and Challenges". In Felix M. Gradstein; James G. Ogg; Mark D. 
Schmitz; abi M. [DOC] [TLE] Epoch (geology) - Wikipedia [PAR] For historical time, see epoch (reference date). For astronomical usage, see 
epoch (astronomy). In geochronology, an epoch is a subdivision of the geologic 
timescale that is longer than an ... Like other geochronological divisions, epochs 
are normally separated by significant changes in the rock layers to which they... [DOC] [TLE] Geologic Time Scale: Major Eons, Eras, Periods and Epochs - Video ... [PAR] An eon, the largest division of the geologic time scale, spans hundreds to 
thousands of millions of years. Geologists generally agree that there are two 
major... [DOC] [TLE] Geologic time - definition of geologic time by The Free Dictionary [PAR] Define geologic time. geologic time synonyms, geologic time pronunciation, 
geologic ... geological era, era - a major division of geological time; an era is 
usually... [DOC] [TLE] Major Divisions of Geological Time - Earth Science Week [PAR] The several geologic eras were originally named Primary, Secondary, Tertiary, 
and Quaternary. The first two names are no longer used; Tertiary and Quaternary
... [DOC] [TLE] Geologic Time Periods: ZoomDinosaurs.com - Enchanted Learning [PAR] The period is the basic unit of geological time in which a single type of rock 
system ... is a division of a geologic period; it is the smallest division of geologic 
time,... [DOC] [TLE] GEOLOGIC EONS, ERAS and PERIODS - Paleontology and ... [PAR] Two or more periods comprise a geological Era. Two or more Eras form an Eon, 
the largest division of geologic time. Some periods are divided into epochs. [DOC] [TLE] Geological time - definition of geological time by The Free Dictionary [PAR] Define geological time. geological time synonyms, geological time ... geological 
era, era - a major division of geological time; an era is usually divided into two or
... [DOC] [TLE] Major Divisions of Geologic Time [PAR] Major Geologic Periods of Time. Background. At the close of the 18th century, the 
haze of fantasy and mysticism that tended to obscure the true nature of the... [DOC] [TLE] Geological Time Scale: Meaning, Divisions and Events [PAR] In this article we will discuss about Geological Time Scale. After reading this 
article you will learn about: 1. Meaning of Geological Time Scale 2. Major 
Divisions... [DOC] [TLE] Geologic Time Flashcards | Quizlet [PAR] The largest division of

Question: A division of geologic time
Answer: era