Results 41 to 50 of about 5,998 (184)

Integrated microfossil biostratigraphy, facies distribution, and depositional sequences of the upper Turonian to Campanian succession in northeast Egypt and Jordan [PDF]

, 2016
Six upper Turonian to Campanian sections in Egypt (Sinai) and Jordan were studied for their microfossil biostratigraphy (calcareous nannofossils and planktonic foraminifera), facies distribution and sequence stratigraphic frameworks.
Ahmad, Fayez, Farouk, Sherif, Marzouk, Akmal M., Powell, John H.   +3 more
core   +1 more source

Relationship and Source of Whitings Used as a Painting Ground in Icons From Polish Museum Collections Based on Their Calcareous Nannofossil Content

Archaeometry, Volume 68, Issue 1, Page 132-143, February 2026.
ABSTRACT In icon painting, chalk whiting is key to creating a gesso ground, providing a smooth, absorbent surface for paint. Calcareous nannofossils, tiny marine skeletons found in chalk, are an ideal tool for analyzing the origin of an icon's chalk ground, often the only reliable information about where the icon came from.
Mariusz Kędzierski, Mirosław P. Kruk
wiley   +1 more source

Calcareous nannofossils and Mesozoic oceanic anoxic events

Marine Micropaleontology, 2004
Abstract Twenty-five years ago, Mesozoic oceanic anoxic events (OAEs) were documented and formalised as intervals of widespread to global deposition of organic matter. The Toarcian, Early Aptian (OAE1a) and latest Cenomanian (OAE2) OAEs are truly global in nature, commonly carbonate-poor, and typically represented by organic carbon-rich black shales.
openaire   +1 more source

From Quarries to Urban Construction Sites: Middle‐Late Mesozoic Limestones in the Public Architecture of Roman Verona, Italy

Geoarchaeology, Volume 41, Issue 1, January/February 2026.
ABSTRACT Numerous buildings, monuments, and infrastructural works in Verona were constructed during the Roman period using stone, a material abundantly available from quarrying areas located relatively close to the city. Petrographic investigations conducted by Transmitted Polarized Light Optical Microscopy (TPL‐OM) and complemented by colorimetric ...
Eliana Bridi, Simone Dilaria, Jacopo Bonetto, Caterina Previato   +3 more
wiley   +1 more source

Sea Surface Temperature and Salinity Changes in the Easternmost Mediterranean During the Pre‐Evaporitic Messinian Controlled by the Restriction at Gibraltar

Paleoceanography and Paleoclimatology, Volume 41, Issue 1, January 2026.
Abstract During the latest Miocene, the Mediterranean Basin was affected by extreme paleoceanographic and paleoenvironmental changes culminating with evaporite (gypsum and halite) formation during the Messinian Salinity Crisis (MSC: 5.97–5.33 Ma).
F. Lanterna, W. Krijgsman, L. Lourens, A. Mulch, I. Vasiliev   +4 more
wiley   +1 more source

Pliensbachian nannofossils from Kachchh: Implications on the earliest Jurassic transgressive event on the western Indian margin [PDF]

, 2013
The oldest rocks within the Kachchh Basin belong to the sediments of Kaladongar Formation exposed in Kuar Bet, Pachchham Island (western India).
Jain, Sreepat, Rai, Jyotsana
core   +1 more source

Cyclic Pockmark Formation Linked to Plio‐Pleistocene Sea‐Level Rise on the Chatham Rise, New Zealand

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Pockmarks are geomorphological depressions on the seafloor in various underwater environmental settings. They are commonly linked to fluid release from subsurface reservoirs; however, the processes involved, fluid types, and relative timing of their formation often remain enigmatic.
Fynn Warnke, Ingo A. Pecher, Lorna J. Strachan, Jess I. T. Hillman, Brandon Dugan   +4 more
wiley   +1 more source

Biostratigrafie spodní křídy manínské jednotky (lom Butkov, Strážovské vrchy, Západní Karpaty) [PDF]

, 2003
This paper is a continuation of systematic stratigraphical research of Lower Cretaceous sequence of the Manín Unit excavated in the Butkov quarry. Calcareous deposits are significant especially by richness of ammonites.
Halásová, Eva, Reháková, Daniela, Skupien, Petr, Vašíček, Zdeněk   +3 more
core   +1 more source

Reconstruction of a latest Paleocene shallow-marine eutrophic paleoenvironment at Sidi Nasseur (Central Tunisia) based on foraminifera, ostracoda, calcareous nannofossils and stable isotopes (delta¹³C delta¹⁸O) [PDF]

, 2009
In order to unravel faunal and paleoenvironmental parameters in shallow marine settings prior to the Paleocene-Eocene thermal maximum, we investigated the Sidi Nasseur section (NAS) in Central Tunisia.
Stassen, P., Dupuis, C., Morsi, A.-M.M., Steurbaut, E., Speijer, R.P.   +4 more
core   +3 more sources

Late miocene calcareous nannofossils and biostratigraphy of the sw tumaco onshore basin (colombian pacific) [PDF]

, 2013
Se presenta el estudio bioestratigráfico semicuantitativo de nanofósiles calcáreos para tres secciones estratigráficas del Mioceno superior de la costa Pacífica de Colombia (SW de la Cuenca Tumaco costa adentro).
Bedoya Agudelo, Erika Lorena, Flores, José Abel, Pardo, Andrés   +2 more
core   +2 more sources