Stable isotope evidence for glacial lake drainage through the St. Lawrence Estuary, eastern Canada, ∼13.1–12.9 ka

Autor:	D. A. Franzi, Robert C. Thunell, John A. Rayburn, Thomas M. Cronin, J.-P. Guilbault
Rok vydání:	2012
Předmět:	Foraminifera Cassidulina Varve Oceanography biology Benthic zone Stable isotope ratio δ18O Younger Dryas Glacial lake biology.organism_classification Geology Earth-Surface Processes
Zdroj:	Quaternary International. 260:55-65
ISSN:	1040-6182
DOI:	10.1016/j.quaint.2011.08.041
Popis:	Postglacial varved and rhythmically-laminated clays deposited during the transition from glacial Lake Vermont (LV) to the Champlain Sea (CS) record hydrological changes in the Champlain-St. Lawrence Valley (CSLV) at the onset of the Younger Dryas ∼13.1–12.9 ka linked to glacial lake drainage events. Oxygen isotope (δ18O) records of three species of benthic foraminifera (Cassidulina reniforme, Haynesina orbiculare, Islandiella helenae) from six sediment cores and the freshwater ostracode Candona from one core were studied. Results show six large isotope excursions (∼0.5 to >2‰) in C. reniforme δ18O values, five excursions in H. orbiculare (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a17513d4feb92e1c826d77bc3d898643 https://doi.org/10.1016/j.quaint.2011.08.041 Zobrazit plný text záznamu Full Text from ScienceDirect