Ontology highlight
ABSTRACT:
SUBMITTER: Boates B
PROVIDER: S-EPMC3443176 | biostudies-literature | 2012 Sep
REPOSITORIES: biostudies-literature
Proceedings of the National Academy of Sciences of the United States of America 20120820 37
We present ab initio calculations of the phase diagram of liquid CO(2) and its melting curve over a wide range of pressure and temperature conditions, including those relevant to the Earth. Several distinct liquid phases are predicted up to 200 GPa and 10,000 K based on their structural and electronic characteristics. We provide evidence for a first-order liquid-liquid phase transition with a critical point near 48 GPa and 3,200 K that intersects the mantle geotherm; a liquid-liquid-solid triple ...[more]