Ontology highlight
ABSTRACT:
SUBMITTER: Mittelholz A
PROVIDER: S-EPMC7195189 | biostudies-literature | 2020 May
REPOSITORIES: biostudies-literature
Mittelholz A A Johnson C L CL Feinberg J M JM Langlais B B Phillips R J RJ
Science advances 20200501 18
The absence of crustal magnetic fields above the martian basins Hellas, Argyre, and Isidis is often interpreted as proof of an early, before 4.1 billion years (Ga) ago, or late, after 3.9 Ga ago, dynamo. We revisit these interpretations using new MAVEN magnetic field data. Weak fields are present over the 4.5-Ga old Borealis basin, with the transition to strong fields correlated with the basin edge. Magnetic fields, confined to a near-surface layer, are also detected above the 3.7-Ga old Lucus P ...[more]