Results 111 to 120 of about 74,613 (308)

Combining morphological and molecular data to study past foraminiferal communities from a temperate coastal sediment core

Boreas, EarlyView.
This paper presents the results of a dual approach for assessing fossil benthic foraminiferal communities using both traditional morphology‐based analyses and sedimentary ancient DNA (sedaDNA) metabarcoding. The main objectives are to test the feasibility of sedaDNA analyses to assess foraminiferal biodiversity in temperate shelf sediments (Le Croisic,
Meryem Mojtahid, Magali Schweizer, Damien Le Moigne, Gwendoline Grégoire, Anne  Murat, Isabelle Poirier, Agnès Baltzer, Inge van Dijk, Marie‐Christine Morère‐Le Paven, Martin Bourges, Maria Pia Nardelli, Christine Barras, Edouard Metzger, Aurelia Mouret   +13 more
wiley   +1 more source

Litho- and biostratigraphic data of lower-middle Miocene sections in the Transylvanian basin and SE Carpathian Foredeep (Romania)

Data in Brief, 2019
Litho- and biostratigraphic data are provided of 5 stratigraphic sections in Romania covering the “Badenian” marine flooding that occurred in the Central Paratethys during the middle Miocene (Langhian).
K. Sant, D.V. Palcu, E. Turco, A. Di Stefano, N. Baldassini, T. Kouwenhoven, K.F. Kuiper, W. Krijgsman   +7 more
doaj  

Valanginian to Barremian Benthic Foraminifera from ODP Site 766 (Leg 123, Indian Ocean) [PDF]

, 1995
A Valanginian to Barremian bathyal foraminiferal assemblage (118 taxa belonging to 51 genera) is documented from ODP Site 766, drilled near the foot of the Exmouth Plateau off northwest Australia.
Holbourn, A.E.L., Kaminski, M.A.
core   +1 more source

Vulnerability to ocean acidification of marine calcifying organisms cannot be predicted from the mineral type in their shells

Limnology and Oceanography Letters, Volume 10, Issue 4, Page 448-452, August 2025.
Gerald Langer, Patrizia Ziveri
wiley   +1 more source

Separate Determination of Strontium and Barium Mass Fractions in Calcite and Dolomite in Carbonate Rocks by a Multi‐step Sequential Leaching Procedure

Geostandards and Geoanalytical Research, EarlyView.
Key Points A ten‐step sequential leaching procedure was applied to dissolve carbonate samples, with 10% of the sample mass dissolved in each step. Calcite dissolves preferentially compared with dolomite. Strontium and barium concentrations released in each step are proportional to the dissolved calcite‐to‐dolomite ratio.
Kaiyu Wu, Yuichiro Ueno, Jakub Surma, Chiyori Nakajo   +3 more
wiley   +1 more source

Potential metabolic records in isotope signals of chondrichthyan hard tissues

Journal of Fish Biology, EarlyView.
Abstract Recent advances have demonstrated that the field metabolic rates (FMRs) of teleost fishes can be quantified from stable isotope compositions of carbonate‐biomineralized otoliths. Bones and teeth, in addition to bioapatite, contain carbonate and should retain a similar isotopic expression of metabolic rate.
Eric Díaz‐Delgado, Ming‐Tsung Chung, Sarah Magozzi, Trevor J. Willis, Clive N. Trueman   +4 more
wiley   +1 more source

Calcification depth of deep-dwelling planktonic foraminifera from the eastern North Atlantic constrained by stable oxygen isotope ratios of shells from stratified plankton tows [PDF]

, 2019
Stable oxygen isotopes (delta O-18) of planktonic foraminifera are one of the most used tools to reconstruct environmental conditions of the water column. Since different species live and calcify at different depths in the water column, the delta O-18 of
Jonkers, Lukas, Kucera, Michal, Rebotim, Andreia, Schulz, Michael, Voelker, Antje, Waniek, Joanna J.   +5 more
core   +1 more source

XXXV.—On the nomenclature of the Foraminifera [PDF]

Annals and Magazine of Natural History
Volume: 9 ; Start Page: 280 ; End Page ...
Parker, W. K., Jones, T. Rupert
openaire   +18 more sources

Formation of Mg‐silicates in the microbial sediments of a saline, mildly alkaline coastal lake (Lake Clifton, Australia): Environmental versus microbiological drivers

Sedimentology, Volume 72, Issue 5, Page 1518-1547, August 2025.
ABSTRACT Recent interest in Mg‐rich silicate formation stems from its role as a valuable palaeoclimatic indicator in fluvio‐lacustrine environments and its insights into metal geochemical cycling. Traditionally, Mg‐silicate genesis in lacustrine contexts is linked to alkaline or saline conditions in closed, evaporitic basins.
Ramon Mercedes‐Martín, Mónica Sánchez‐Román, Carlos Ayora, Mike Rogerson, Camille Thomas, Rob Van Spanning, Alex Brasier, David Wacey, John J. G. Reijmer   +8 more
wiley   +1 more source

Recalibration of the Tethyan shallow-benthic zonation across the Paleocene-Eocene boundary: the Egyptian record

Geologica Acta, 2009
The Galala Mountains in Egypt provide an excellent platform-basin transect with deposits spanning the Paleocene/ Eocene (P/E) boundary. These interfingering deposits enable a recalibration between platform and open marine biostratigraphic schemes.
C. SCHEIBNER, R.P. SPEIJER
doaj