Devonian/Carboniferous boundary glacioeustatic fluctuations in
a platform-to-basin direction: A geochemical approach of
sequence stratigraphy in pelagic settings

J 2016

Devonian/Carboniferous boundary glacioeustatic fluctuations in a platform-to-basin direction: A geochemical approach of sequence stratigraphy in pelagic settings

BÁBEK, Ondřej, Tomáš KUMPAN, Jiří KALVODA and Tomáš MATYS GRYGAR

Basic information

Original name

Devonian/Carboniferous boundary glacioeustatic fluctuations in a platform-to-basin direction: A geochemical approach of sequence stratigraphy in pelagic settings

Authors

BÁBEK, Ondřej (203 Czech Republic, guarantor), Tomáš KUMPAN (203 Czech Republic, belonging to the institution), Jiří KALVODA (203 Czech Republic, belonging to the institution) and Tomáš MATYS GRYGAR (203 Czech Republic)

Edition

Sedimentary Geology, Elsevier Science, 2016, 0037-0738

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

ScienceDirect

Impact factor

Impact factor: 2.373

RIV identification code

RIV/00216224:14310/16:00087886

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.sedgeo.2016.03.009

UT WoS

000375736700008

Keywords in English

Element geochemistry;Hangenberg event;Glacioeustasy;Devonian/Carboniferous boundary;Sedimentation rate;Pelagic carbonates

Abstract

V originále

We investigated high-resolution stratigraphic distribution of selected major and trace elements and gamma-ray spectra of fourteen Devonian/Carboniferous (D/C) boundary sections of Europe constituting the late Palaeozoic Laurussia and Gondwana. The aim was to trace the geochemical signature of a marked forced and normal regressive interval which was associated with rapid progradation of siliciclastics into the marine carbonate systems (Rhenish Massif) and a prominent hiatus in shallow-water ramp settings (Namur–Dinant Basin). This interval represents the late Devonian Hangenberg event (HBE) sensu lato (middle praesulcata conodont zone) as defined by previous authors. This regressive interval (FSST to LST) correlates with thin shale layers (HBE shale) sandwiched between monotonous nodular calcilutite/calcisiltite successions at five pelagic sections of Moravia, Carnic Alps, Montagne Noire, and Pyrenees. In all sections with continuous D/C sedimentation (i.e., except those of the Namur–Dinant Basin), the HBE s.l. interval is accompanied by elevated percentages of detrital proxies (Al, K, Rb, Zr) and changes in their ratios (Zr/Rb, K/Al, Rb/K) which are normally interpreted as indicators of increased siliciclastic input, provenance, and grain size. Zr/Rb and other proxies are traceable even without apparent lithological evidence and can, therefore, facilitate stratigraphic correlation. Paleoredox and productivity proxies (U/Th and Ni/Rb enrichment factors) only rarely show elevated values in the Hangenberg black shale interval, indicating that the associated water dysoxia/anoxia was a local rather than global phenomenon. Global correlations based on the HBE black shales should therefore be dropped in favour of the HBE s.l. interval. Moreover, analysis of sedimentation rates in the upper expansa to kockeli zone interval using the published radiometric ages suggests that the HBE s.l. was a time of significant increase in the rate of siliciclastic supply into the ocean, even in the most distal pelagic sections. Consequently, the previous interpretation of the HBE black shale as a condensed succession deposited during rapid sea-level rise seems unlikely. We interpret the HBE s.l. (i.e., including the HBE black shale) as a marine record of glacioeustatic sea-level drop and increased aeolian transport in connection with late Devonian climatic cooling and glaciation. The set of geochemical markers related to the late Devonian sea-level fluctuation can be used for super-regional to global correlations from platform to basin settings. Moreover, they can facilitate current efforts to determine a new D/C boundary definition.

Links

GA14-18183S, research and development project

Name: Sekvenční stratigrafie devonských bioeventů - výkyvy mořské hladiny na přechodu od klimatického režimu greenhouse k icehouse

Investor: Czech Science Foundation

Citovat

BÁBEK, Ondřej, Tomáš KUMPAN, Jiří KALVODA and Tomáš MATYS GRYGAR. Devonian/Carboniferous boundary glacioeustatic fluctuations in a platform-to-basin direction: A geochemical approach of sequence stratigraphy in pelagic settings. Sedimentary Geology. Elsevier Science, 2016, vol. 337, May, p. 81-99. ISSN 0037-0738. Available from: https://dx.doi.org/10.1016/j.sedgeo.2016.03.009.

@article{1342744,
   author = {Bábek, Ondřej and Kumpan, Tomáš and Kalvoda, Jiří and Matys Grygar, Tomáš},
   article_number = {May},
   doi = {http://dx.doi.org/10.1016/j.sedgeo.2016.03.009},
   keywords = {Element geochemistry;Hangenberg event;Glacioeustasy;Devonian/Carboniferous boundary;Sedimentation rate;Pelagic carbonates},
   language = {eng},
   issn = {0037-0738},
   journal = {Sedimentary Geology},
   title = {Devonian/Carboniferous boundary glacioeustatic fluctuations in a platform-to-basin direction: A geochemical approach of sequence stratigraphy in pelagic settings},
   url = {http://www.sciencedirect.com/science/article/pii/S0037073816000889},
   volume = {337},
   year = {2016}
}

TY  - JOUR
ID  - 1342744
AU  - Bábek, Ondřej - Kumpan, Tomáš - Kalvoda, Jiří - Matys Grygar, Tomáš
PY  - 2016
TI  - Devonian/Carboniferous boundary glacioeustatic fluctuations in a platform-to-basin direction: A geochemical approach of sequence stratigraphy in pelagic settings
JF  - Sedimentary Geology
VL  - 337
IS  - May
SP  - 81-99
EP  - 81-99
PB  - Elsevier Science
SN  - 00370738
KW  - Element geochemistry;Hangenberg event;Glacioeustasy;Devonian/Carboniferous boundary;Sedimentation rate;Pelagic carbonates
UR  - http://www.sciencedirect.com/science/article/pii/S0037073816000889
L2  - http://www.sciencedirect.com/science/article/pii/S0037073816000889
N2  - We investigated high-resolution stratigraphic distribution of selected major and trace elements and gamma-ray spectra of fourteen Devonian/Carboniferous (D/C) boundary sections of Europe constituting the late Palaeozoic Laurussia and Gondwana. The aim was to trace the geochemical signature of a marked forced and normal regressive interval which was associated with rapid progradation of siliciclastics into the marine carbonate systems (Rhenish Massif) and a prominent hiatus in shallow-water ramp settings (Namur–Dinant Basin). This interval represents the late Devonian Hangenberg event (HBE) sensu lato (middle praesulcata conodont zone) as defined by previous authors. This regressive interval (FSST to LST) correlates with thin shale layers (HBE shale) sandwiched between monotonous nodular calcilutite/calcisiltite successions at five pelagic sections of Moravia, Carnic Alps, Montagne Noire, and Pyrenees. In all sections with continuous D/C sedimentation (i.e., except those of the Namur–Dinant Basin), the HBE s.l. interval is accompanied by elevated percentages of detrital proxies (Al, K, Rb, Zr) and changes in their ratios (Zr/Rb, K/Al, Rb/K) which are normally interpreted as indicators of increased siliciclastic input, provenance, and grain size. Zr/Rb and other proxies are traceable even without apparent lithological evidence and can, therefore, facilitate stratigraphic correlation. Paleoredox and productivity proxies (U/Th and Ni/Rb enrichment factors) only rarely show elevated values in the Hangenberg black shale interval, indicating that the associated water dysoxia/anoxia was a local rather than global phenomenon. Global correlations based on the HBE black shales should therefore be dropped in favour of the HBE s.l. interval. Moreover, analysis of sedimentation rates in the upper expansa to kockeli zone interval using the published radiometric ages suggests that the HBE s.l. was a time of significant increase in the rate of siliciclastic supply into the ocean, even in the most distal pelagic sections. Consequently, the previous interpretation of the HBE black shale as a condensed succession deposited during rapid sea-level rise seems unlikely. We interpret the HBE s.l. (i.e., including the HBE black shale) as a marine record of glacioeustatic sea-level drop and increased aeolian transport in connection with late Devonian climatic cooling and glaciation. The set of geochemical markers related to the late Devonian sea-level fluctuation can be used for super-regional to global correlations from platform to basin settings. Moreover, they can facilitate current efforts to determine a new D/C boundary definition.
ER  -

BÁBEK, Ondřej, Tomáš KUMPAN, Jiří KALVODA and Tomáš MATYS GRYGAR. Devonian/Carboniferous boundary glacioeustatic fluctuations in a platform-to-basin direction: A geochemical approach of sequence stratigraphy in pelagic settings. \textit{Sedimentary Geology}. Elsevier Science, 2016, vol.~337, May, p.~81-99. ISSN~0037-0738. Available from: https://dx.doi.org/10.1016/j.sedgeo.2016.03.009.

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