Ontology highlight
ABSTRACT:
SUBMITTER: Aarons SM
PROVIDER: S-EPMC7725461 | biostudies-literature | 2020 Dec
REPOSITORIES: biostudies-literature
Aarons Sarah M SM Reimink Jesse R JR Greber Nicolas D ND Heard Andy W AW Zhang Zhe Z Dauphas Nicolas N
Science advances 20201209 50
Plate subduction greatly influences the physical and chemical characteristics of Earth's surface and deep interior, yet the timing of its initiation is debated because of the paucity of exposed rocks from Earth's early history. We show that the titanium isotopic composition of orthogneisses from the Acasta Gneiss Complex spanning the Hadean to Eoarchean transition falls on two distinct magmatic differentiation trends. Hadean tonalitic gneisses show titanium isotopic compositions comparable to mo ...[more]