Category:Chronostratigraphy of the Chalk Group: Difference between revisions

From MediaWiki
Jump to navigation Jump to search
No edit summary
No edit summary
 
(2 intermediate revisions by the same user not shown)
Line 1: Line 1:
The onshore Chalk Group succession in the UK belongs to the Late Cretaceous Period, and represents the Cenomanian, Turonian, Coniacian, Santonian, Campanian and Maastrichtian Ages. In the North Sea, the youngest part of the Chalk Group (Ekofisk Formation) belongs to the basal Paleogene Period (Danian Age). The rock intervals corresponding to each of the above Ages are termed Stages, and they bear the same names as the Ages (e.g. Cenomanian Stage etc.).
{| class="wikitable" style="margin-left:40px; margin-bottom:20px; float:right; text-align:left;"
 
{| Class="wikitable" cellpadding="0" cellspacing="0" align="left"
|+ The chronostratigraphy of the chalk Group<br> *data from Gradstein & Ogg (1996)
|+ The chronostratigraphy of the chalk Group<br> *data from Gradstein & Ogg (1996)
| valign="top" | Lithostratigraphy  
| valign="top" | Lithostratigraphy  
Line 7: Line 5:
| valign="top" | Age/Stage
| valign="top" | Age/Stage
| valign="top" align="center" | Date* (millions of<br>years before<br>present)
| valign="top" align="center" | Date* (millions of<br>years before<br>present)
| valign="top" | Duration*<br>(millions of<br>years)
| valign="top" align="center" | Duration*<br>(millions of<br>years)
|-
|-
|
|
Line 45: Line 43:
| 5.4
| 5.4
|}
|}
The onshore Chalk Group succession in the UK belongs to the Late Cretaceous Period, and represents the Cenomanian, Turonian, Coniacian, Santonian, Campanian and Maastrichtian Ages. In the North Sea, the youngest part of the Chalk Group (Ekofisk Formation) belongs to the basal Paleogene Period (Danian Age). The rock intervals corresponding to each of the above Ages are termed Stages, and they bear the same names as the Ages (e.g. Cenomanian Stage etc.).


{| cellpadding="0" cellspacing="0"
|
{| cellpadding="0" cellspacing="0"
| <div>
select a Stage for more detailed information about its recognition and correlation
</div>
|}
|}
{| cellpadding="0" cellspacing="0" align="left"
|
|-
|
| [[Image:clip_image007.png|39px]]
|}


<br clear="ALL">


===References===
===References===

Latest revision as of 11:49, 2 October 2013

The chronostratigraphy of the chalk Group
*data from Gradstein & Ogg (1996)
Lithostratigraphy Period Age/Stage Date* (millions of
years before
present)
Duration*
(millions of
years)
PALEOGENE ← 61
CHALK
GROUP
Danian ← 65+/-0.1 4
LATE
CRETACEOUS
Maastrichtian ← 71.3+/-0.5 6.3
Campanian ← 83.5+/-0.5 12.2
Santonian ← 85.8+/-0.5 2.3
Coniacian ← 89+/-0.5 3.2
Turonian ← 93.5+/-0.2 4.5
Cenomanian ← 98.9+/-0.6 5.4

The onshore Chalk Group succession in the UK belongs to the Late Cretaceous Period, and represents the Cenomanian, Turonian, Coniacian, Santonian, Campanian and Maastrichtian Ages. In the North Sea, the youngest part of the Chalk Group (Ekofisk Formation) belongs to the basal Paleogene Period (Danian Age). The rock intervals corresponding to each of the above Ages are termed Stages, and they bear the same names as the Ages (e.g. Cenomanian Stage etc.).


References

GRADSTEIN, F & OGG, J. 1996. A Phanerozoic time scale. Episodes, 19, 3-5