Table 2 Stratigraphic assignment

From: Global database of paleocurrent trends through the Phanerozoic and Precambrian

1st Digit

 

2nd Digit

 

3rd Digit

4th and 5th Digits

Cenozoic

4

Holocene

7

Upper=6, Mid=4, Lower=1 with 9 used for formations including next epoch up (i.e., 04903=Mio-Plio) and 0 reserved for entire interval (i.e., 04015=all Mio)

Assigned to specific formation names, or descriptive terms when formation names do not exist or are not applicable (as in Recent)

  

Pleistocene

6

  
  

Pliocene

5

  
  

Miocene

4

  
  

Oligocene

3

  
  

Eocene

2

  
  

Paleocene

1

  

Mesozoic

3

Cret-Paleoc

5

In Mesozoic and Paleozoic epochs are assigned progressively greater numbers, still with 0 and 9 as above

 
  

U. Cretaceous

4

  
  

L. Cretaceous

3

  
  

Jurassicc

2

  
  

Triassic

1

  

Paleozoic

2

Permian

7

  
  

Pennsylvanian

6

  
  

Mississippian

5

  
  

Devonian

4

  
  

Silurian

3

  
  

Ordovician

2

  
  

Cambrian

1

  

Precambrian

1

Proterozoic

1

In Precambrian, eras are assigned progressively greater numbers as above

 
  

Archaean

0

  
  1. Longitude—in decimal degrees.
  2. Latitude—in decimal degrees.
  3. Direction—the direction the depositing flow was moving towards in degrees. This is a vector mean direction where provided in the paper. Otherwise it is an estimate of the vector mean direction generated as indicated in the Methods section.
  4. #data—how many outcrop measurements are pooled in this dataset.
  5. Area sq km—the approximate surface area of the outcrop from which measurements were derived.
  6. Dispersion—Estimation of the degrees in a circle over which the data are dispersed.
  7. Continent—The data are at present distributed across 23 plates that can be considered separately. The defined regions, subject to future modification as needed, are presented in Table 3.
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