|
Depth scale
|
Acronym
|
Definition
|
|---|---|---|
| Meters below sea floor* | mbsf | The mbsf scale is defined by the wireline length when a core is drilled. |
| Meters composite depth* | mcd | The mcd scale is derived from correlation of physical properties measurements between holes and represents the depth in the composite sedimentary sequence. |
| Corrected meters composite depth† | cmcd | The cmcd scale is constructed by dividing the mcd scale by the amount that the mcd scale grew relative to the mbsf scale (the growth factor). |
| Meters logging depth‡ | mld | The mld scale is determined by estimating depths based on the rate at which the logging tool is raised through the hole and the time at which it senses the sediment/water interface. |
| Estimated logging depth‡ | eld | The eld scale is constructed by correlation of whole-core physical properties data with logging data. |
Notes: * = for a detailed explanation, see "Composite Depth Scale" in "Composite Section." † = For a detailed explanation, see "Corrected Composite Depth" in "Composite Section." ‡ = For a detailed explanation, see "Core-Log Integration" in "Composite Section."