Re–Os dating of the Makimine and Shimokawa VMS deposits for new age constraints on ridge subduction beneath Japanese Islands
Tatsuo Nozaki, Yutaro Takaya, Ken Nakayama, Yasuhiro Kato · 2024
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Description
Tatsuo Nozaki and three co-authors dated two seafloor ore deposits to pin down when an ocean ridge sank beneath Japan, in a study published in 2024. Ridge sinking triggers heat change and hot water flow, but its timing is hard to fix. The ores formed on a mud-covered mid-ocean ridge, so their ages mark the event. A rare metal dating method gave clean lines: about 89 million years for one site and 48 million for the other.
Five signs agreed that both ores grew on such a ridge in a shelf sea. Their ages match the rocks around them. The team reads the pair as formed just before the Izanagi-Pacific ridge sank under the ancient Japanese islands. The dates give the deep past of the islands a firmer frame.
Catalog record
| CREATOR | Tatsuo Nozaki, Yutaro Takaya, Ken Nakayama, Yasuhiro Kato |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 20 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |