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Late Miocene to Early Pliocene blueschist from Taiwan and its exhumation via forearc extraction.

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Title: Late Miocene to Early Pliocene blueschist from Taiwan and its exhumation via forearc extraction.
Authors: Sandmann, Sascha1, Nagel, Thorsten J.2, Froitzheim, Nikolaus1, Ustaszewski, Kamil3, Münker, Carsten4
Source: Terra Nova. Aug2015, Vol. 27 Issue 4, p285-291. 7p. 1 Color Photograph, 3 Charts, 1 Graph, 1 Map.
Subjects: Lutetium compounds, Miocene Epoch, Pliocene Epoch, Blueschists, Facies, Hafnium compounds
Abstract: Blueschist facies rocks in the Yuli Belt of Taiwan's Central Range record ongoing subduction of the Eurasian plate. We present a prograde Lu-Hf garnet-whole-rock age of 5.1 ± 1.7 Ma from a retrogressed blueschist in the Yuli Belt. This age is considerably younger than the previously assumed age of 14-8 Ma for high-pressure metamorphism in the Yuli Belt and represents the youngest Lu-Hf garnet age ever recorded for blueschist facies metamorphism. The age sheds new light on the palaeogeographic origin and exhumation scenario of the Yuli Belt. We propose that the Yuli Belt originated from the ocean-continent boundary of the Chinese passive margin. It was subducted eastward during collision with the Luzon island arc and rapidly exhumed when the forearc lithosphere was removed from above the continental slab by discrete subduction (extraction). This process reduces the pressure above the continental slab and may prompt the ascent of subducted crust into the opening gap. Thus, it can control the exhumation of high-pressure rocks. [ABSTRACT FROM AUTHOR]
Copyright of Terra Nova is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Late Miocene to Early Pliocene blueschist from Taiwan and its exhumation via forearc extraction.
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  Data: <searchLink fieldCode="AR" term="%22Sandmann%2C+Sascha%22">Sandmann, Sascha</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nagel%2C+Thorsten+J%2E%22">Nagel, Thorsten J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Froitzheim%2C+Nikolaus%22">Froitzheim, Nikolaus</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ustaszewski%2C+Kamil%22">Ustaszewski, Kamil</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Münker%2C+Carsten%22">Münker, Carsten</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Terra+Nova%22">Terra Nova</searchLink>. Aug2015, Vol. 27 Issue 4, p285-291. 7p. 1 Color Photograph, 3 Charts, 1 Graph, 1 Map.
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Lutetium+compounds%22">Lutetium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Miocene+Epoch%22">Miocene Epoch</searchLink><br /><searchLink fieldCode="DE" term="%22Pliocene+Epoch%22">Pliocene Epoch</searchLink><br /><searchLink fieldCode="DE" term="%22Blueschists%22">Blueschists</searchLink><br /><searchLink fieldCode="DE" term="%22Facies%22">Facies</searchLink><br /><searchLink fieldCode="DE" term="%22Hafnium+compounds%22">Hafnium compounds</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Blueschist facies rocks in the Yuli Belt of Taiwan's Central Range record ongoing subduction of the Eurasian plate. We present a prograde Lu-Hf garnet-whole-rock age of 5.1 ± 1.7 Ma from a retrogressed blueschist in the Yuli Belt. This age is considerably younger than the previously assumed age of 14-8 Ma for high-pressure metamorphism in the Yuli Belt and represents the youngest Lu-Hf garnet age ever recorded for blueschist facies metamorphism. The age sheds new light on the palaeogeographic origin and exhumation scenario of the Yuli Belt. We propose that the Yuli Belt originated from the ocean-continent boundary of the Chinese passive margin. It was subducted eastward during collision with the Luzon island arc and rapidly exhumed when the forearc lithosphere was removed from above the continental slab by discrete subduction (extraction). This process reduces the pressure above the continental slab and may prompt the ascent of subducted crust into the opening gap. Thus, it can control the exhumation of high-pressure rocks. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Terra Nova is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1111/ter.12158
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 285
    Subjects:
      – SubjectFull: Lutetium compounds
        Type: general
      – SubjectFull: Miocene Epoch
        Type: general
      – SubjectFull: Pliocene Epoch
        Type: general
      – SubjectFull: Blueschists
        Type: general
      – SubjectFull: Facies
        Type: general
      – SubjectFull: Hafnium compounds
        Type: general
    Titles:
      – TitleFull: Late Miocene to Early Pliocene blueschist from Taiwan and its exhumation via forearc extraction.
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            NameFull: Sandmann, Sascha
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            NameFull: Nagel, Thorsten J.
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            NameFull: Ustaszewski, Kamil
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              Text: Aug2015
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              Y: 2015
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