 | Review waiting, please be patient.
This may take 3 months or more, since drafts are reviewed in no specific order. There are 2,570 pending submissions waiting for review.
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
Reviewer tools
|
| Submission declined on 6 March 2024 by Encoded (talk). This draft's references do not show that the subject qualifies for a Wikipedia article. In summary, the draft needs multiple published sources that are:
This submission is not adequately supported by reliable sources. Reliable sources are required so that information can be verified. If you need help with referencing, please see Referencing for beginners and Citing sources.
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
This draft has been resubmitted and is currently awaiting re-review. |  |
The Palau-Kyushu Ridge, also known as the Kyushu-Palau Ridge (KPR), is a massive undersea mountain range located in the Philippine Sea, stretching approximately 2,600 kilometers long in a north-south direction.[1] It's named after the two landmasses it flanks: the Japanese island of Kyushu to the north and the Micronesian island nation of Palau to the south.[2]
Formation edit
The KPR is regarded as a remnant of the proto Izu–Ogasawara (Bonin)–Mariana (IBM) island arc that was separated by backarc spreading of the Shikoku and Parece Vela Basins in the late Eocene.[3]
The crustal thickness of the KPR reaches 12.0 km in the center, which gradually decreases to 5.0–6.0 km at sides.[4] The velocity structure of the KPR is similar to the structures of the adjacent West Philippine Basin and Parece Vela Basin (PVB), indicating a typical oceanic crust2. Isostatic analysis shows that some regional compensation occurs during the loading of the KPR, which implies that the KPR was built mainly by magmatism during the splitting of the Izu-Bonin-Mariana arc and the following back-arc seafloor spreading of the PVB during 30–28 Ma BP2.
The absence of the thick middle crust (6.0–6.5 km/s) and high velocity lower-crustal layers (7.2–7.6 km/s) suggest that arc magmatism plays a less important role in the KPR formation2.
Geological features edit
From the view of geomorphologic features, the KPR is a discontinuous seamount chain (chain-shaped seamounts) and subduction beneath the Japanese Island arc at the Nankai Trough which is the natural boundary between the basin and the Japanese Island arc. At the positions of 25°N, 24°N, 23°N and 18°N, obvious discontinuity is shown, which belongs to natural topographic discontinuity.
References edit
- ^ Ishizuka, Osamu; Taylor, Rex N.; Yuasa, Makoto; Ohara, Yasuhiko (May 2011). "Making and breaking an island arc: A new perspective from the Oligocene Kyushu-Palau arc, Philippine Sea". Geochemistry, Geophysics, Geosystems. 12 (5). Bibcode:2011GGG....12.5005I. doi:10.1029/2010GC003440. ISSN 1525-2027.
- ^ "Marine Regions · Kyushu-Palau Ridge (Ridge)". www.marineregions.org. Retrieved 2024-02-02.
- ^ Nishizawa, Azusa; Kaneda, Kentaro; Oikawa, Mitsuhiro (2016-02-26). "Crust and uppermost mantle structure of the Kyushu-Palau Ridge, remnant arc on the Philippine Sea plate". Earth, Planets and Space. 68 (1): 30. Bibcode:2016EP&S...68...30N. doi:10.1186/s40623-016-0407-3. ISSN 1880-5981.
- ^ Niu, Xiongwei; Tan, Pingchuan; Ding, Weiwei; Wang, Wei; Wei, Yao; Wei, Xiaodong; Ruan, Aiguo; Zhang, Jie; Wang, Chunyang; Tang, Yong; Li, Jiabiao (2022-01-01). "Oceanic crustal structure and tectonic origin of the southern Kyushu-Palau Ridge in the Philippine Sea". Acta Oceanologica Sinica. 41 (1): 39–49. Bibcode:2022AcOSn..41a..39N. doi:10.1007/s13131-021-1978-9. ISSN 1869-1099. S2CID 245827067.