Ontology highlight
ABSTRACT:
SUBMITTER: Yang WB
PROVIDER: S-EPMC3781392 | biostudies-literature | 2013
REPOSITORIES: biostudies-literature
Scientific reports 20130101
Cretaceous represents one of the hottest greenhouse periods in the Earth's history, but some recent studies suggest that small ice caps might be present in non-polar regions during certain periods in the Early Cretaceous. Here we report extremely negative δ(18)O values of -18.12‰ to -13.19‰ for early Aptian hydrothermal zircon from an A-type granite at Baerzhe in northeastern China. Given that A-type granite is anhydrous and that magmatic zircon of the Baerzhe granite has δ(18)O value close to m ...[more]