Chimiques_événements

The chemical and physical events

A chemical event corresponds to an unusual concentration or to a rough variation of a chemical element or an isotope, with regard to the standard.
One events physical appearance corresponds to a rough variation of a physical property.
Some of these events can appear to the naked eye, others require more or less heavy analyses of laboratory.

The carbon 13

The synthesis the most the detailed in the Pond Anglo-Parisien stands out from a collective article: Jarvis And al. 2006. Here are names given to the events.

Negative excursion

Excursion
Be positive

Limit Santonien-Campanien
Foreness
Hawks Brow
Buckle
Horseshoe Bay
Haven Brow
Bedwell
Michel Dean
Kingsdown
White Fall
East Cliff
Light
Beeding
Navigation
Hitch Wood
Bridgewick
Caburn
Southerham
Pewsey
Woolgari inferior
Glynde
Round Down
Lulworth
Holywell
Limit Cénomanien-Turonien
Monument
Amphidonte
Jukes-Brown
Médio-cénomanien 2
P/B break
Médio-cénomanien 1
Dixoni means
Coats in Virgatus
Cénomanien inferior 3
Coats in crippsi
Cénomanien inferior 2
Cénomanien inferior 1
Limit albo-cénomanienne

The CORBs

Cretaceous Oceanic Red Beds is sediments possessing a red pigmentation.

The paleomagnetism

The fossil magnetic polarité can be used to specify the age of a rock.