Results 21 to 30 of about 61,693 (203)

Renewal of planktonic foraminifera diversity after the Cretaceous Paleogene mass extinction by benthic colonizers

open access: yesNature Communications, 2022
Planktonic foraminifera are key to understanding paleoclimate and plankton evolution, but their origins are unclear. Here, the authors use a molecular clock to suggest that benthic foraminifera dispersed in plankton and renew planktonic foraminifera ...
Raphaël Morard   +6 more
doaj   +1 more source

Biostratigraphy, microfacies analysis and depositional environment of the Bartonian–Priabonian limestones in Shan-Abad anticline (west of Rafsanjan) [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2021
The Middle–Late Eocene carbonate deposits have developed in the Shan-Abad anticline as a thin belt among volcanic rocks. The nummulite banks are one of the most interesting deposits in this belt and composed of nummulite accumulations in the form of ...
Tayebeh Ahmadi
doaj   +1 more source

Foraminifera associated with cold seeps in marine sediments

open access: yesFrontiers in Marine Science, 2023
Cold seep foraminifera have attracted considerable attention as they provide valuable insights into the study of cold seeps. This study provides a comprehensive overview of the manifestations of foraminifera in cold seep environments and methane seepage ...
Yinghan Lu   +4 more
doaj   +1 more source

Subsurface and Infaunal Foraminifera of Kemaman- Chukai Mangrove Swamps, East Coast Peninsular Malaysia

open access: yesOpen Quaternary, 2021
This study analysed the distribution and abundance of dead and live (Rose Bengal stained) infaunal foraminifera from three short cores taken at three locations in the mangrove swamps of Kemaman-Chukai, Terengganu, Malaysia.
Rokiah Suriadi   +4 more
doaj   +1 more source

Development of freeze-thaw processing technique for disaggregation of indurated mudrocks and enhanced recovery of calcareous microfossils [PDF]

open access: yes, 2014
Microfossil extraction from indurated mudrocks is widely acknowledged as challenging, especially for foraminifera. Here we report development of the freeze–thaw extraction method through the addition of rapid heating, detergent and ultrasound stages.
Coe, Angela L., Kennedy, Alice E.
core   +1 more source

Stratigraphy of Lower Carboniferous "Kazanskoe pleso" section (Unya River, Northern Urals) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2022
New data on the stratigraphy of Carboniferous section in the middle reaches of the Unya River (Northern Urals) are presented. Based on the study of foraminifera and calcareous algae, the Visean and Early Serpukhovian ages has been established.
Shadrin A.N., Ivanova R.M.
doaj   +1 more source

Planktonic foraminifera fluxes and their response to the Asian Monsoon: insights from the Maldives, Indian Ocean

open access: yesFrontiers in Earth Science, 2023
This study describes seasonal changes in the fluxes of planktonic foraminifera in response to changes in environmental conditions during the Asian Monsoon.
Maria Caezare Mae R. Cariño   +8 more
doaj   +1 more source

Testing the impact of diagenesis on the delta O-18 and delta C-13 of benthic foraminiferal calcite from a sediment burial depth transect in the equatorial Pacific [PDF]

open access: yes, 2013
Stable oxygen and carbon isotope (δ18O and δ13C) values measured in foraminiferal calcite are one of the primary tools used in paleoceanography. Diagenetic recrystallisation of foraminiferal calcite can act to reset primary isotopic values but its ...
Edgar, Kirsty M.   +2 more
core   +4 more sources

Eocene foraminiferal biofacies in Kutch Basin (India) in context of palaeoclimate and palaeoecology

open access: yesJournal of Palaeogeography, 2019
The Eocene Epoch passed through multiple hyperthermal events and recorded highest temperatures in the Cenozoic. Very few studies from Eocene palaeotropical sites have recorded changes in shallow marine foraminiferal assemblages.
Sonal Khanolkar, Pratul Kumar Saraswati
doaj   +1 more source

Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2023
Lutut Beds are the sandstone beds exposed in the northwest margin of Kendeng Basin, which contain abundant metamorphic-quartz grains, frequent recycled sedimentary quartz, and reworked bioclasts.
Anis Kurniasih   +7 more
doaj   +1 more source

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