Movement History of the Microcontinents from the Tibetan Plateau Based on Paleomagnetic Results with Sufficient Sampling Units.
Saved in:
| Title: | Movement History of the Microcontinents from the Tibetan Plateau Based on Paleomagnetic Results with Sufficient Sampling Units. |
|---|---|
| Authors: | Ma, Yiming1 (AUTHOR) maym@cug.edu.cn, Ruan, Weimin2 (AUTHOR), Niu, Chao1 (AUTHOR), Yang, Tianshui3 (AUTHOR) |
| Source: | Journal of Earth Science. Oct2022, Vol. 33 Issue 5, p1072-1080. 9p. |
| Subject Terms: | *Confidence intervals, *Statistical sampling, *Eocene Epoch |
| Geographic Terms: | Lhasa (China), Tibetan Plateau |
| Abstract: | Paleomagnetic results cannot be applied in global and regional tectonic reconstructions unless the paleosecular variation has been adequately averaged. However, how many sampling sites and samples are enough to calculate a reliable paleopole remains debated. Based on the relation among the sampling sites N, the precision parameter k, the virtual geomagnetic pole scatter s, and the confidence limit A95 of the paleopole, we find that 20 sites (samples) or more are required to yield a paleopole with an A95 ≈ 5° based on a review of available paleomagnetic results from the Lhasa, Qiangtang and Tethyan Himalaya. Random samplings of Jurassic virtual geomagnetic poles from the Sangri area show that the Fisher mean pole with neglectable angle deviation can be obtained when sampling sites increase to 20. High-quality paleomagnetic results, with sites/samples number N/n ⩾ ∼20–30, show that the Qiangtang, Lhasa, and Tethyan Himalaya moved northward in the Late Permian-Middle Triassic, Jurassic, and Cretaceous, respectively, and then accreted to Asia in the Late Triassic, Late Jurassic-Early Cretaceous and Paleocene-Early Eocene, respectively. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
|---|---|
| Header | DbId: enr DbLabel: Energy & Power Source An: 159740605 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Movement History of the Microcontinents from the Tibetan Plateau Based on Paleomagnetic Results with Sufficient Sampling Units. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ma%2C+Yiming%22">Ma, Yiming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> maym@cug.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Ruan%2C+Weimin%22">Ruan, Weimin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Niu%2C+Chao%22">Niu, Chao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Tianshui%22">Yang, Tianshui</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Earth+Science%22">Journal of Earth Science</searchLink>. Oct2022, Vol. 33 Issue 5, p1072-1080. 9p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Confidence+intervals%22">Confidence intervals</searchLink><br />*<searchLink fieldCode="DE" term="%22Statistical+sampling%22">Statistical sampling</searchLink><br />*<searchLink fieldCode="DE" term="%22Eocene+Epoch%22">Eocene Epoch</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Lhasa+%28China%29%22">Lhasa (China)</searchLink><br /><searchLink fieldCode="DE" term="%22Tibetan+Plateau%22">Tibetan Plateau</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Paleomagnetic results cannot be applied in global and regional tectonic reconstructions unless the paleosecular variation has been adequately averaged. However, how many sampling sites and samples are enough to calculate a reliable paleopole remains debated. Based on the relation among the sampling sites N, the precision parameter k, the virtual geomagnetic pole scatter s, and the confidence limit A95 of the paleopole, we find that 20 sites (samples) or more are required to yield a paleopole with an A95 ≈ 5° based on a review of available paleomagnetic results from the Lhasa, Qiangtang and Tethyan Himalaya. Random samplings of Jurassic virtual geomagnetic poles from the Sangri area show that the Fisher mean pole with neglectable angle deviation can be obtained when sampling sites increase to 20. High-quality paleomagnetic results, with sites/samples number N/n ⩾ ∼20–30, show that the Qiangtang, Lhasa, and Tethyan Himalaya moved northward in the Late Permian-Middle Triassic, Jurassic, and Cretaceous, respectively, and then accreted to Asia in the Late Triassic, Late Jurassic-Early Cretaceous and Paleocene-Early Eocene, respectively. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=159740605 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s12583-022-1721-2 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1072 Subjects: – SubjectFull: Confidence intervals Type: general – SubjectFull: Statistical sampling Type: general – SubjectFull: Eocene Epoch Type: general – SubjectFull: Lhasa (China) Type: general – SubjectFull: Tibetan Plateau Type: general Titles: – TitleFull: Movement History of the Microcontinents from the Tibetan Plateau Based on Paleomagnetic Results with Sufficient Sampling Units. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ma, Yiming – PersonEntity: Name: NameFull: Ruan, Weimin – PersonEntity: Name: NameFull: Niu, Chao – PersonEntity: Name: NameFull: Yang, Tianshui IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 1674487X Numbering: – Type: volume Value: 33 – Type: issue Value: 5 Titles: – TitleFull: Journal of Earth Science Type: main |
| ResultId | 1 |
