Something’s off.Seafloor spreading is generally thought to be aided by heat from magma rising from deep underground, which weakens the crust. But a research team reports that surveys in the southern Okinawa Trough point to a different possibility: broad normal faults may shape rift-like seafloor terrain and allow spreading to proceed even where regional heat flow is low and evidence for widespread magma supply is limited.
The reported observations come from the Yaeyama and Yonaguni submarine grabens. Local magma activity remains possible, according to the report, but the proposed mechanism does not require broadly hot conditions.
UNVERIFIED
Listing and origin publication metadata are bound; underlying research claims are not independently verified.
A research team reports that seafloor spreading in the southern Okinawa Trough may proceed despite limited evidence of widespread magma supply; this claim has not been independently verified.
