Results 41 to 50 of about 12,744 (240)
A calcareous nannofossil and organic geochemical study of marine palaeoenvironmental changes across the Sinemurian/Pliensbachian (early Jurassic, ~191Ma) in Portugal [PDF]
, 2016 The Sinemurian/Pliensbachian boundary (~ 191 Ma) is acknowledged as one of the most important steps in the radiation of planktonic organisms, especially primary producers such as dinoflagellates and coccolithophores.
Baudin, F. +6 more
core +4 more sources
Heritage Science, 2023 Chalk has been used since Antiquity for various purposes, and since Gothic for preparatory layers of painted cultural heritage objects. Several materials are called chalk in Cultural Heritage, but this work especially focuses on chalk composed of ...
Victory Armida Janine Jaques +1 more
doaj +1 more source
Geosciences, 2022 The variations in assemblages of calcareous nannofossils are tracked in the Dakhla and Tarawan Formations exposed at Gebel Nezzazat (central Sinai, Egypt). Five calcareous nannofossil biozones, namely NP2/3, NP4, NP5, NP6, and NP7/8 are identified.
Atef M. Kasem +5 more
doaj +1 more source
Biostratigraphic and magnetostratigraphic synthesis of the Celebes and Sulu Seas, Leg 124 [PDF]
, 1991 During ODP Leg 124, late middle Eocene to Quaternary sediment sequences were recovered from 13 holes drilled at five sites in the Celebes and Sulu basins. Paleomagnetic measurements and biostratigraphic studies using calcareous nannofossils, planktonic
Hsu, V. +7 more
core +1 more source
Oxygen isotopic paleotemperatures across the Runangan-Whaingaroan (Eocene-Oligocene) boundary in a New Zealand shelf sequence [PDF]
, 1981 Oxygen isotopic compositions of the tests of mainly benthic foraminifera, from sections of conformable Late Eocene (Runangan) to Early Oligocene (Whaingaroan) shelf mudstones, at both Cape Foulwind and Port Elizabeth, western South Island, indicate that ...
Burns, David A., Nelson, Campbell S.
core +4 more sources
NANNOFOSSIL EVENTS AND STRATIGRAPHY OF THE ILAM FORMATION IN ZAGROS (SW IRAN)
Rivista Italiana di Paleontologia e Stratigrafia, 2014 Exploration studies of Cretaceous system in the Zagros region are very important due to the presence large hydrocarbon fields like the Ab-Teymur oilfield.
SAEEDEH SENEMARI +2 more
doaj +1 more source
Ceramic micropalaeontology: the analysis of microfossils in ancient ceramics [PDF]
, 2007 Microfossils can be a common component of ancient ceramic artefacts. Their analysis in this unusual context is a little-known, yet promising cross-disciplinary application of micropalaeontology.
Day, Peter, Quinn, Patrick
core +1 more source
Frontiers in Earth ScienceA hemipelagic succession 29m thick, situated in South Tibet within the Tethyan Himalaya tectonic unit, has been investigated for its calcareous nannofossil content. A total of 17 samples were subject to qualitative and semi-quantitative analysis.
Mihaela Melinte-Dobrinescu +6 more
doaj +1 more source
, 2018 . This paper documents a warming event across the middle–upper Albian interval in a ∼ 22 m long section from the Gault Clay Formation of Copt Point, Folkestone (UK). Evidence for the event comes from three independent datasets: calcareous nannofossils,
S. Kanungo, P. Bown, J. Young, A. Gale
semanticscholar +1 more source
Paleocene calcareous nannofossils from Tanzania (TDP sites 19, 27 and 38).
Journal of Nannoplankton Research, 2016 This paper documents the nannofossil record from the oldest yet recovered Paleogene sediments – Selandian to Thanetian (Zone NP5-7) – from the Tanzania Drilling Project.
P. Bown
semanticscholar +1 more source