Results 141 to 150 of about 53,108 (242)

Upper Cretaceous Calcareous Nannofossil Biostratigraphy and Quaternary Calcareous Nannofossil Assemblages Changes

open access: yesUpper Cretaceous Calcareous Nannofossil Biostratigraphy and Quaternary Calcareous Nannofossil Assemblages Changes
博士学位論文 (Thesis(doctor ...
openaire  

Impact of global cooling on Early Cretaceous high pCO2 world during the Weissert Event. [PDF]

open access: yesNat Commun, 2021
Cavalheiro L   +14 more
europepmc   +1 more source

Site U1478 [PDF]

open access: yes, 2017
Barker, S.   +28 more
core   +1 more source

Environmental changes during marl-limestone formation: evidence from the Gargasian (Middle Aptian) of La Marcouline Quarry (Cassis, SE France)

open access: yes, 2007
International audienceLimestone-marl alternations are usually interpreted to reflect cyclic paleoenvironmental fluctuations linked to Milankovitch-scale climate variations.
Beltran, Catherine   +4 more
core   +2 more sources

Evidence of volcanic ash at a K-T boundary section: Ocean drilling program hole 690 C, Maud Rise, Weddell Sea off East Antarctica [PDF]

open access: yes
Rare vitric volcanogenic ash but more abundant clay minerals considered volcanogenic in origin are associated with an expanded and essentially complete K-T boundary sequence from Ocean Drilling Project (ODP) Hole 690 C on Maud Rise in the Weddell Sea off
Barker, P. F.   +9 more
core   +1 more source

Trench sediment heterogeneity controls accretion mechanisms in subduction zone. [PDF]

open access: yesSci Rep
Sanità E   +5 more
europepmc   +1 more source

Case studies of Mesozoic calcareous nannofossils : implications for palaeoecology, calcareous nannofossil morphology and carbonate accumulation

open access: yes, 2004
Kalkige Nannofossilien (KN) stellen seit dem Mesozoikum eine wichtige Komponente des marinen Phytoplanktons dar. Sie lassen sich zur Datierung mariner Sedimente und als paläoozeanografische Proxies nutzen. Die Ziele dieser Arbeit sind es, das Verständnis von Wechseln in den KN-Vergesellschaftungen (KNV) und von der Größenvariabilität einzelner Taxa im ...
openaire   +1 more source

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