The Berriasian–Valanginian boundary interval based on calpionellids from the Taraises Formation, Cuencamé de Ceniceros, Durango, NW Mexico: Biostratigraphic, paleoecologic and paleobiogeographic significance

Omaña, Lourdes; González-Arreola, Celestina; Núñez‐Useche, Fernando

doi:10.1016/j.jsames.2017.10.011

Cited by 5 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…gulekhensis from sample G29.2 indicates its late Berriasian-early Valanginian age (cf. Omaña et al 2017;Gradstein et al 2020). In turn, a specimen of the early Valanginian-Aptian (Coccioni et al 2007;Barchetta 2015) Praehedbergella cf.…”

Section: Biostratigraphy Of the Giewont Sectionmentioning

confidence: 99%

Acta Geologica Polonica

Lodowski

Pszczółkowski

Wilamowski

et al. 2021

View full text Add to dashboard Cite

Herein are presented the results of detailed bio- (calcareous dinocysts, calpionellids, foraminifers, saccocomids) and chemostratigraphic (δ13C) studies combined with high-resolution microfacies, rock magnetic and gamma-ray spectrometry (GRS) investigations performed on the upper Kimmeridgian–upper Valanginian carbonates of the Giewont succession (Tatricum, Giewont and Mały Giewont sections, Western Tatra Mountains, Poland). The interval studied covers the contact between the Raptawicka Turnia Limestone (RTL) Fm. and the Wysoka Turnia Limestone (WTL) Fm. Their sedimentary sequence is composed of micrites, pseudonodular limestones, cyanoid packstones, lithoclastic packstone and encrinites. A precise correlation with the previously published Mały Giewont section is ensured by biostratigraphy, rock magnetic and GRS logs. The methodology adopted has enabled the recognition of two stratigraphic discontinuities, approximated here as corresponding to the latest Tithonian–early (late?) Berriasian and the early Valanginian. The hiatuses are evidenced by biostratigraphic data and the microfacies succession as well as by perturbations in isotopic compositions and rock magnetic logs; they are thought to result from a conjunction of tectonic activity and eustatic changes. A modified lithostratigraphic scheme for the Giewont and the Osobita High-Tatric successions is proposed. The top of the RTL Fm. falls in the upper Tithonian, where cyanoid packstones disappear. At the base of the WTL Fm. a new Giewont Member is defined as consisting of a basal lithoclastic packstone and following encrinites.

show abstract

Section: Biostratigraphy Of the Giewont Sectionmentioning

confidence: 99%

Acta Geologica Polonica

Lodowski

Pszczółkowski

Wilamowski

et al. 2021

View full text Add to dashboard Cite

show abstract

Berriasian planktonic foraminifera and calcareous nannofossils from Crimea Mountains, with reference to microfossil evolution

et al. 2018

View full text Add to dashboard Cite

A Berriasian age planktonic foraminifera assemblage from a section near the village of Krasnoselivka in the Tonas River Basin, Crimea contains Favusella hoterivica (Subbotina), ?Favusella sp., Conoglobigerina gulekhensis (Gorbachik and Poroshina), Lilliputinella eocretacea (Neagu), Lilliputinella aff. similis (Longoria), Hedbergella aff. handousi Salaj and ? Globuligerina sp. Specimens are poorly preserved, but test morphology, aperture and key wall texture features are recognizable. Age assignment is based on a diverse and well-preserved calcareous nannofossils assemblage of upper zone CC2 and ammonites (Jacobi Zone). The nannfossils indicate an open marine environment of Tethyan affinity. Several of the planktonic foraminiferal taxa were not previously described from pre-Valanginian or Hauterivian strata. XRD analysis of the tests of benthic and planktonic foraminifera and micro-gastropods shows these to be calcitic in composition, also of those benthic and planktonic foraminifera that were deemed to be originally aragonitic in composition, indicating diagenetic changes in carbonate fractions. From detailed comparison to Jurassic planktonic foraminifera, two lineages are proposed from Late Jurassic into earliest Cretaceous: Globuligerina oxfordiana (Grigelis) to Favusella hoterivica (Subbotina) and Globuligerina balakhmatovae (Morozova) to Lilliputinella eocretacea (Neagu). The first lineage is a gradual change in wall sculpture from rugulose to reticulate and the second one a change to a lower spire, more ovate chambers of which the last one may be much larger in size and shift of the aperture out of the umbilicus. The meagre evolution of early planktonic foraminifera from Toarcian through Tithonian with only two genera and fewer than ten species does not follow the evolutionary diversity pattern of nannofossils and dinoflagellates. Tithonian appears to be a bottleneck for planktonic foraminifera, with a sparse record and virtual extinction. The so-called Globigerina oxfordiana from the Tithonian in ODP Site 901 on Galicia Bank (Collins et al. Proceeding Deep Sea Drilling Project Science Research 149:193-201, 1996) is of Miocene age.

show abstract

Evolution and Biostratigraphy

Gradstein¹

2020

Geologic Time Scale 2020

View full text Add to dashboard Cite

The Berriasian–Valanginian boundary interval based on calpionellids from the Taraises Formation, Cuencamé de Ceniceros, Durango, NW Mexico: Biostratigraphic, paleoecologic and paleobiogeographic significance

Cited by 5 publications

References 56 publications

Acta Geologica Polonica

Acta Geologica Polonica

Berriasian planktonic foraminifera and calcareous nannofossils from Crimea Mountains, with reference to microfossil evolution

Evolution and Biostratigraphy

Contact Info

Product

Resources

About