Geologic Column

geologic column

[¦jē·ə¦läj·ik ′käl·əm]
(geology)
The vertical sequence of strata of various ages found in an area or region. Also known as column.
The geologic time scale as represented by rocks.

Geologic Column

 

(or stratigraphic column), a diagram that uses special symbols to represent in a certain scale the sequence of strata in a standard geologic section and the nature of the contacts between adjacent stratigraphic units. A geologic column usually gives the names or index numbers of the stratigraphic units, the geologic ages of the units, the thicknesses of the units, and the units’ lithologic and paleontological characteristics. A geologic column that has been constructed by comparing two or more local geologic sections is called a composite geologic column.

References in periodicals archive ?
Two informative tables summarize the characteristic animal and plant fossils that occur in the rock formations of each time period of the geologic column from Proterozoic (Early Proterozoic) to Cenozoic (Neogene).
* Geologic Column option to put all attributes on a single line to avoid overlaps;
Ancestral horseshoe crabs (Class Merostomata, Order Xiphosurida, Suborder Synziphosurina), often found associated with eurypterids in Silurian and Devonian strata, are sporadically represented in the geologic column (Stormer, 1955).
A description of the soil geologic column across the scalped land surface mentioned previously was prepared in October 2001 by examining soil materials every 2 m down a scalped land surface with a 23.5% slope.
The engineers noted, as did we, an abrupt boundary about halfway down the soil geologic column that we examined (Fig.
Four initial chapters describe the geologic columns; the CD-ROM contains a complete set of core photographs.