Response of foraminiferal assemblages to precession-paced environmental variation in a mid-latitude seaway: Late Turonian greenhouse of Central Europe
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F21%3A00546541" target="_blank" >RIV/67985530:_____/21:00546541 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/21:10434634 RIV/00025798:_____/21:00000139
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0377839821000669" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0377839821000669</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.marmicro.2021.102025" target="_blank" >10.1016/j.marmicro.2021.102025</a>
Alternative languages
Result language
angličtina
Original language name
Response of foraminiferal assemblages to precession-paced environmental variation in a mid-latitude seaway: Late Turonian greenhouse of Central Europe
Original language description
Foraminiferal assemblages were studied as part of a multi-proxy dataset from an expanded record of Late Turonian hemipelagic deposition obtained from the Bch-1 research borehole in the Bohemian Cretaceous Basin (Central Europe). Based on fluctuations in the Si/Al ratio, precession-paced cyclicity (18-23 kyr) is recognized in the studied interval and interpreted to reflect changes in seasonality. This study focuses on relationships between the astronomically controlled lithological cyclicity and the composition of foraminifera assemblages, together with variation in other parameters (geochemical, geophysical, palynological) that may provide further information about palaeoenvironmental change on a precession time scale. Spearman correlation enables the foraminiferal assemblages to be divided into three clusters. These clusters are interpreted to reflect palaeoenvironmental patterns that result from variation in nutrient supply and in surface water salinity, driven by changes in seasonality. The Lenticulina - Gyroidinoides - agglutinated foraminifera cluster dominated during periods of decreased seasonality and alternated with the Cibicides - spiral unkeeled planktics cluster (lower part of study interval) or the Gavellinela - Praebulimina - spiral keeled + biserial planktics cluster (upper part of study interval) coincident with the presumed seasonality maxima. Replacement of the Gavelinella cluster by the Cibicides cluster may reflect a longer-term trend of seasonality changes or changes in food supply. The observed low foraminiferal abundance and low planktic/benthic ratio during the seasonality maxima indicates that these were times of more intense rainfall, increased elastic supply and surface water turbidity, and more pronounced salinity fluctuations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA17-10982S" target="_blank" >GA17-10982S: Sea-level change and global carbon cycle in greenhouse climate: trans-Atlantic correlation of Turonian (mid-Cretaceous) sedimentary archives</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Marine Micropaleontology
ISSN
0377-8398
e-ISSN
1872-6186
Volume of the periodical
167
Issue of the periodical within the volume
August
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
18
Pages from-to
102025
UT code for WoS article
000687638100004
EID of the result in the Scopus database
2-s2.0-85111922679