Stable isotopes in pocket gopher teeth as evidence of a Late Matuyama climate shift in the southern Rocky Mountains

Auteurs :
ROGERS, K.L.
YANG WANG,

Description :
In this paper, carbon and oxygen stable isotope data of herbivorous rodent teeth are used as indicators of change in the predominance of C3, C4, and CAM plants and of changes in temperature and precipitation. Taken together with other previously analyzed data from these localities, the evidence indicates a shift in the severity of glacial events that is mainly related to the hydrologic characteristics of the climate. This shift may have been caused by broad regional uplift that may have been instrumental in shifting global climate cycles from the 41,000-yr Matuyama cycles to the Brunhes 100,000-yr-dominated cycles.


Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 2002, vol. 57, n°. 2, p. 200-207, nombre de pages : 8, Collation : Illustration, Références bibliographiques : 25 ref.

Date :
2002

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier