Results 31 to 40 of about 457 (183)

Calcareous Nannofossils Biostratigraphy of Gulneri Formation in Sulaimaniya, Northestern Iraq

open access: yesIraqi Geological Journal, 2023
Investigations on the calcareous nannofossils of the Gulneri Formation are being done in the northern Iraqi of Dokan and Pushen areas, Sulimani, Northern Iraq.
Seham Al-Salmani, Omar Al-Badrani
doaj   +1 more source

TOARCIAN NANNOBIOHORIZONS FROM LUSITANIAN BASIN (PORTUGAL)AND THEIR CALIBRATION AGAINST AMMONITE ZONES

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2006
The calcareous nannofossil content of the Toarcian succession, widespread in the Lusitanian Basin (Central Portugal), has been studied on the basis of a closely spaced sampling and a refined lithostratigraphic frame dated by ammonites.
NICOLA PERILLI, LUIS VICTOR DUARTE
doaj   +1 more source

INTEGRATED HIGH-RESOLUTION STRATIGRAPHY OF THE LOWER OLIGOCENETUSA TUFFITE FORMATION IN THE CALABRO-LUCANO AREAAND SICILY (SOUTHERN ITALY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2002
Shale samples from the volcaniclastic turbidites ascribed to the Tusa Tuffite Formation (Tufiti di Tusa Auct.) cropping out at the Canale Candela section (Calabro-Lucano boundary, southern Italy) have yielded rich, diverse and well-preserved palynomorph ...
LUCA BARUFFINI   +2 more
doaj   +1 more source

Calcareous nannofossil assemblage in paintings chalk ground for provenance analysis: three original paintings compared to european source materials

open access: yesHeritage 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

Event Deposits Recorded Over the Past 800 kyr in IODP Hole U1433A (South China Sea): Implications of a Revised Methodology for Chronology and Paleoclimate Reconstruction

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Instantaneous event deposits such as turbidites, debrites, and slumps are common and frequently occur in marginal seas. These instantaneous deposits represent seconds to days in duration, and can therefore significantly impact age‐depth models and interpretation of paleoclimate history based on thick sedimentary sequences recovered in deep ...
Xunpeng Li   +8 more
wiley   +1 more source

SYNTHESIS OF CALCAREOUS NANNOFOSSIL EVENTS IN TETHYAN LOWER AND MIDDLE JURASSIC SUCCESSIONS

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 1999
This paper is a synthesis of calcareous nannofossil biostratigraphy for the Lower and Middle Jurassic of the Mediterranean Province based on several sections from Northern and Central Italy.
EMANUELA MATTIOLI, ELISABETTA ERBA
doaj   +1 more source

Calcareous nannofossils biostratigraphy and Paleoclimatology of the Bekhme Formation, Bekhere anticline, Dhouk area, Kurdistan region, Northern Iraq

open access: yesTikrit Journal of Pure Science, 2023
A Detailed Calcareous nannofossil study conducted on the Bekhme Formation that is cropped out at the Southern limb of the Bekhere anticline, eastern ward of the Dohuk city near Bajlur village, northern Iraq.
Adnan Hakeem Mohammed Ameen   +2 more
doaj   +1 more source

Calcareous Nannofossils in Middle Triassic (Anisian) - A preliminary note

open access: yesGeologija, 1991
In this note nannofossils of Anisian age are reported in a Middle Triassic flysch sequence in southern Montenegro (Dinarides). The rich and various nannofossils are largely different from those described either in Paleozoic-Upper Triassic or in younger rocks.
DE CAPOA, PAOLA, RADOIČIĆ R.
openaire   +4 more sources

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

open access: yesSedimentology, Volume 73, Issue 5, Page 1631-1663, August 2026.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi   +4 more
wiley   +1 more source

The Calcareous Nannofossils Biostratigraphy of the Cretaceous Red Bed the in Shiranish Formation, Hiran in Erbil Governorate and Smaqoli Area in Sulaimaniya Governorate, Northern Iraq

open access: yesIraqi Geological Journal, 2023
On the basis of the stratigraphic ranges of the reported calcareous nannfossils for several species, two sections of the Shiranish Formation from the Hiran in the Erbil Governorate and the Smaqoli area in Sulaimaniya Governorate, Northern Iraq ...
Alaa Al-Zubaidi, Omar Al-Badrani
doaj   +1 more source

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