Sedimentary record of Variscan unroofing of the Bohemian Massif

J 2024

Sedimentary record of Variscan unroofing of the Bohemian Massif

XIAO, Yao, Johannes REMBE, Renata ČOPJAKOVÁ, Jonathan C. AITCHISON, Yichao CHEN et. al.

Basic information

Original name

Sedimentary record of Variscan unroofing of the Bohemian Massif

Authors

XIAO, Yao, Johannes REMBE, Renata ČOPJAKOVÁ (203 Czech Republic, belonging to the institution), Jonathan C. AITCHISON, Yichao CHEN and Renjie ZHOU

Edition

Gondwana Research, Elsevier, 2024, 1342-937X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10505 Geology

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 6.100 in 2022

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.gr.2023.11.003

UT WoS

001132632800001

Keywords in English

Sedimentary provenance; Variscan Orogen; Bohemian Massif; Crustal exhumation; Moravosilesian Culm Basin

Abstract

V originále

The Bohemian Massif in the eastern Variscan Orogen is the host of globally significant ultrahigh-pressure metamorphic rock suites that experienced enigmatic unroofing processes. In the eastern Bohemian Massif, the Moravosilesian Culm Basin (The Czech Republic) with <7.5 km thick Lower Carboniferous siliciclastic turbidities has recorded crustal unroofing associated with the late Paleozoic amalgamation of Gondwana and Laurussia. This study presents data from sandstone petrography, heavy mineral assemblages, and detrital zircon U-Pb geochronology from Moravosilesian Culm sediments. Sandstone modal compositions imply continental/recycled orogen affinities. High-grade metamorphic lithic fragments and high garnet contents in upper Culm sediments indicate the exhumation of the middle to lower crustal materials, consistent with those of the Bohemian Massif. Detrital zircon U-Pb data constrain maximum depositional ages of sediments in the Drahany Upland to 335-326 Ma (late Visean-middle Serpukhovian). Detrital, igneous and metamorphic zircon U-Pb data compiled from surrounding regions support that source regions for lower Culm sediments (Moldanubian Unit and Sudetes) remained the same. Whereas, upper Myslejovice sediments might have derived from exhumation and erosion of the root of the Moldanubian Unit and/or Moravosilesian Nappes. Rapid exhumation of the Moldanubian Unit within the Bohemian Massif during the deposition of upper Culm sediments is inferred.

Citovat

XIAO, Yao, Johannes REMBE, Renata ČOPJAKOVÁ, Jonathan C. AITCHISON, Yichao CHEN and Renjie ZHOU. Sedimentary record of Variscan unroofing of the Bohemian Massif. Gondwana Research. Elsevier, 2024, vol. 128, April, p. 141-160. ISSN 1342-937X. Available from: https://dx.doi.org/10.1016/j.gr.2023.11.003.

@article{2368160,
   author = {Xiao, Yao and Rembe, Johannes and Čopjaková, Renata and Aitchison, Jonathan C. and Chen, Yichao and Zhou, Renjie},
   article_number = {April},
   doi = {http://dx.doi.org/10.1016/j.gr.2023.11.003},
   keywords = {Sedimentary provenance; Variscan Orogen; Bohemian Massif; Crustal exhumation; Moravosilesian Culm Basin},
   language = {eng},
   issn = {1342-937X},
   journal = {Gondwana Research},
   title = {Sedimentary record of Variscan unroofing of the Bohemian Massif},
   url = {https://www.sciencedirect.com/science/article/pii/S1342937X23003064},
   volume = {128},
   year = {2024}
}

TY  - JOUR
ID  - 2368160
AU  - Xiao, Yao - Rembe, Johannes - Čopjaková, Renata - Aitchison, Jonathan C. - Chen, Yichao - Zhou, Renjie
PY  - 2024
TI  - Sedimentary record of Variscan unroofing of the Bohemian Massif
JF  - Gondwana Research
VL  - 128
IS  - April
SP  - 141-160
EP  - 141-160
PB  - Elsevier
SN  - 1342937X
KW  - Sedimentary provenance
KW  - Variscan Orogen
KW  - Bohemian Massif
KW  - Crustal exhumation
KW  - Moravosilesian Culm Basin
UR  - https://www.sciencedirect.com/science/article/pii/S1342937X23003064
N2  - The Bohemian Massif in the eastern Variscan Orogen is the host of globally significant ultrahigh-pressure metamorphic rock suites that experienced enigmatic unroofing processes. In the eastern Bohemian Massif, the Moravosilesian Culm Basin (The Czech Republic) with <7.5 km thick Lower Carboniferous siliciclastic turbidities has recorded crustal unroofing associated with the late Paleozoic amalgamation of Gondwana and Laurussia. This study presents data from sandstone petrography, heavy mineral assemblages, and detrital zircon U-Pb geochronology from Moravosilesian Culm sediments. Sandstone modal compositions imply continental/recycled orogen affinities. High-grade metamorphic lithic fragments and high garnet contents in upper Culm sediments indicate the exhumation of the middle to lower crustal materials, consistent with those of the Bohemian Massif. Detrital zircon U-Pb data constrain maximum depositional ages of sediments in the Drahany Upland to 335-326 Ma (late Visean-middle Serpukhovian). Detrital, igneous and metamorphic zircon U-Pb data compiled from surrounding regions support that source regions for lower Culm sediments (Moldanubian Unit and Sudetes) remained the same. Whereas, upper Myslejovice sediments might have derived from exhumation and erosion of the root of the Moldanubian Unit and/or Moravosilesian Nappes. Rapid exhumation of the Moldanubian Unit within the Bohemian Massif during the deposition of upper Culm sediments is inferred.
ER  -

XIAO, Yao, Johannes REMBE, Renata ČOPJAKOVÁ, Jonathan C. AITCHISON, Yichao CHEN and Renjie ZHOU. Sedimentary record of Variscan unroofing of the Bohemian Massif. \textit{Gondwana Research}. Elsevier, 2024, vol.~128, April, p.~141-160. ISSN~1342-937X. Available from: https://dx.doi.org/10.1016/j.gr.2023.11.003.

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