Microfossil turnover across the uppermost Danian at Caravaca, Spain: Paleoenvironmental inferences and identification of the latest Danian event

Alegret, Laia; Ortíz, Silvia; Arreguín-Rodríguez, Gabriela J.; Monechi, Simonetta; Millan, Isabel M.; Molina, Eustoquio

doi:10.1016/j.palaeo.2016.09.013

Cited by 19 publications

(8 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No extinctions have been recorded across the MECO at Site 702 (Table S2) in contrast to the extinction of almost half of deep‐sea benthic foraminiferal species across the PETM (e.g., Alegret et al, , b, ; Arreguín‐Rodríguez et al, ; Miller et al, ; Thomas, , , ; Tjalsma & Lohmann, ). Similarly, no benthic foraminiferal extinctions have been recorded across the MECO in other locations from different latitudes and basins (Boscolo Galazzo et al, ; Moebius et al, , ) nor across some Paleocene (e.g., Alegret et al, ; Deprez et al, ) and Eocene smaller hyperthermal events (e.g., Arreguín‐Rodríguez et al, ; Arreguín‐Rodríguez & Alegret, ).…”

Section: Discussionmentioning

confidence: 95%

Paleoenvironmental Changes at ODP Site 702 (South Atlantic): Anatomy of the Middle Eocene Climatic Optimum

Rivero-Cuesta

Westerhold

Agnini

et al. 2019

Paleoceanog and Paleoclimatol

Self Cite

View full text Add to dashboard Cite

The Middle Eocene Climatic Optimum (MECO) was an unusual global warming event that interrupted the long-term Eocene cooling trend ca. 40 Ma. Here we present new high-resolution bulk and benthic isotope records from South Atlantic ODP Site 702 to characterize the MECO at a high latitude setting. The MECO event, including early and peak warming as well as recovery to background levels, had an estimated~300 Kyr duration (~40.51 to~40.21 Ma). Cross-plots (δ 18 O vs. δ 13 C) suggest that the mechanisms driving coupled changes in O and C isotope values across the MECO were weaker or absent before the event. The paleoecological response has been evaluated by quantitative analysis of calcareous nannofossils and benthic foraminifera assemblages. We document a shift in the biogeographical distribution of warm and temperate calcareous nannoplankton taxa, which migrated toward higher latitudes due to increased temperatures during the MECO. Conversely, changes in the organic matter flux to the seafloor appear to have controlled benthic foraminifera dynamics at Site 702. Benthic phytodetritus exploiting taxa increased in abundance coinciding with a positive δ 13 C excursion,~150 Kyr before the start of the δ 18 O negative excursion that marks the start of MECO warming. Our data suggest that paleoecological disturbance in the deep sea predates MECO δ 18 O excursion and that it was driven by changes in the type and/or amount of organic matter reaching the seafloor rather than by increased temperature.

show abstract

Section: Discussionmentioning

confidence: 95%

Paleoenvironmental Changes at ODP Site 702 (South Atlantic): Anatomy of the Middle Eocene Climatic Optimum

Rivero-Cuesta

Westerhold

Agnini

et al. 2019

Paleoceanog and Paleoclimatol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hyperthermals generally are modulated at astronomical frequencies, specifically eccentricity (e.g., Lourens et al, 2005;Westerhold et al, , 2020Barnet et al, 2019;Zeebe and Lourens, 2019). Paleocene hyperthermals include the Lower C29n event (Coccioni et al, 2010), the Latest Danian Event (LDE, also called Top C27n event, Westerhold et al, 2008Westerhold et al, , 2011Bornemann et al, 2009;Alegret et al, 2016) and the Early Late Paleocene Event (ELPE, also called Mid Paleocene Biotic Event, MPBE; Petrizzo, 2005;Bralower et al, 2006;. The earliest Paleocene perturbation of the global carbon cycle is known as the Dan-C2 event (duration ~100 kyr), identified by Quillévéré et al (2008) at ∽65.2 Ma (Gradstein et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Benthic foraminiferal turnover across the Dan-C2 event in the eastern South Atlantic Ocean (ODP Site 1262)

Arreguín-Rodríguez

Barnet

Leng

et al. 2021

Palaeogeography, Palaeoclimatology, Palaeoecology

Self Cite

View full text Add to dashboard Cite

“…However, the rapid pattern of microfossil recovery begins within the first centimeters of Facies 2. In addition, comparison of the planktonic foraminifera variations observed in the Facies 1 with the published records from Spain [3,25] and Pacific Ocean [5] highlights significant similarities such as the abundance of Morozovella in coincidence with the decline of Subbotina, the flourish of Morozovella cf. albeari and the occurrence of maximum fragmentation shells of planktonic foraminifera.…”

Section: Correlation Of Glauconitic Marker Bed and Other Hyperthermalmentioning

confidence: 72%

“…According Jehle et al and Alegret et al [3,5], the flourish of Morozovella cf. albeari marked the onset of the LDE.…”

Section: Environmental Inferences and Onset Of The Lde Across The Glamentioning

confidence: 94%

“…The upper Danian interval preceding the Danian/Selandian transition was characterized by a global warming event called Latest Danian Event [1][2][3][4][5]. Similar to Paleocene Eocene Thermal Maximum, the climate change prevailing before and across the LDE disturbed the chemical and physical proprieties of marine ecosystem leading to the ocean dissolution, biotic perturbation, poor oxygenation and increased column water stratification [6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sedimentological, Mineralogical and Geochemical Analysis of the Hyperthermal Latest Danian Event across the Galuconitic Marker Bed (Central Tunisia)

Kotti¹,

Mardassi²,

Ouali³

et al. 2017

J Earth Sci Clim Change

View full text Add to dashboard Cite

Field prospecting of the El-Haria Formation, which is Paleocene in age, leads to the discovery of the glauconitic marker bed in inner neritic to bathyal setting from Southern Tethyan realm. The recognition of this interval is based on lithological changes and an accurate stratigraphic proxy allows to distinguish of three main facies. The use of multivariate (cluster analysis and principal component analysis) and univariate (one-way Anova test) analysis confirm dissimilarities in composition between facies as testified by the significant differences. Sedimentological, geochemical and mineralogical analysis leads to assess paleo-environmental changes and to ascertain the variation of the lysocline and CCD across the glauconitic marker bed. Facies 1, particularly, rich in cobalt, sulfides and iron oxides reflects containment conditions affecting the surface and bottom water. These conditions lead to the extinction of the majority of benthic foraminifera and the disruption in planktonic foraminifers' assemblage. In addition, the Facies 1 displays a brief shoaling of lysocline and CCD evidenced by the low calcite content, the bad preserved benthic foraminifera associated to the maximum fragmentation shells of planktonic foraminifera. In contrary, the rapid pattern of microfossil and the calcite recovery through the Facies 2 indicate suboxic to oxic conditions and a deepen lysocline and CCD. The cobalt lightly increases within the upper Facies, suggesting slightly oxygen deficient bottom water environment. The base of the glauconitic marker bed seems to be a lateral equivalent of the Latest Danian Event recorded throughout the Tethyan Realm (Spain and Egypt) and the Pacific Ocean.

show abstract

Microfossil turnover across the uppermost Danian at Caravaca, Spain: Paleoenvironmental inferences and identification of the latest Danian event

Cited by 19 publications

References 58 publications

Paleoenvironmental Changes at ODP Site 702 (South Atlantic): Anatomy of the Middle Eocene Climatic Optimum

Paleoenvironmental Changes at ODP Site 702 (South Atlantic): Anatomy of the Middle Eocene Climatic Optimum

Benthic foraminiferal turnover across the Dan-C2 event in the eastern South Atlantic Ocean (ODP Site 1262)

Sedimentological, Mineralogical and Geochemical Analysis of the Hyperthermal Latest Danian Event across the Galuconitic Marker Bed (Central Tunisia)

Contact Info

Product

Resources

About