The Sirius Passet Lagerstatte of North Greenland-A geochemical window on early Cambrian low-oxygen environments and ecosystems.

ABSTRACT: The early Cambrian Sirius Passet fauna of northernmost Greenland (Cambrian Series 2, Stage 3) contains exceptionally preserved soft tissues that provide an important window to early animal evolution, while the surrounding sediment holds critical data on the palaeodepositional water-column chemistry. The present study combines palaeontological data with a multiproxy geochemical approach based on samples collected in situ at high stratigraphic resolution from Sirius Passet. After careful consideration of chemical alterations during burial, our results demonstrate that fossil preservation and biodiversity show significant correlation with iron enrichments (Fe_HR /Fe_T ), trace metal behaviour (V/Al), and changes in nitrogen cycling (δ¹⁵ N). These data, together

SUBMITTER: Hammarlund EU 

PROVIDER: S-EPMC6586032 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature