Results 21 to 30 of about 242 (176)

Palaeoenvironmental study and sequence stratigraphy of Sanghaneh Formation in Qalehjegh section (North of Bojnord) using organic matter contents of the rock unit [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2015
  Introduction   Kopeh-Dagh basin is located northeast of Iran and in this basin the sedimentary beds began from middle Jurassic. The Sanghaneh Formation is one of the lower Cretaceous rock units in sections.
Hossein Kazemi, Ebrahim Ghasemi-Nejad
doaj   +2 more sources

Integrating Palynofacies Analysis and Spore Coloration for Assessing Thermal Maturity and Hydrocarbon Potential in Cretaceous Rocks: Safir-N-2 Well, Egypt [PDF]

Egyptian Journal of Pure and Applied Science
Thirty-seven cutting samples from the lower upper Cretaceous succession of Safir-N-2 well, north Western Desert of Egypt, were processed palynologically to extract the particulate organic matter (POM). Two palynofacies associations (PFA-1 and PFA-2) were
Mahmoud Hokam, Sameh Tahoun, Zainab El-Noamani   +2 more
doaj   +1 more source

Assessing Thermal Maturity through a Multi-Proxy Approach: A Case Study from the Permian Faraghan Formation (Zagros Basin, Southwest Iran)

Geosciences, 2021
This study focuses on the thermal maturity of Permian deposits from the Zagros Basin, Southwest Iran, employing both optical methods (Thermal Alteration Index, Palynomorph Darkness Index, Vitrinite Reflectance, UV Fluorescence) and geochemical analyses ...
Amalia Spina, Simonetta Cirilli, Andrea Sorci, Andrea Schito, Geoff Clayton, Sveva Corrado, Paulo Fernandes, Francesca Galasso, Giovanni Montesi, Zelia Pereira, Mehrab Rashidi, Roberto Rettori   +11 more
doaj   +1 more source

Changes in Cave Sedimentation Mechanisms During the Late Quaternary: An Example From the Lower Cerovačka Cave, Croatia

Frontiers in Earth Science, 2021
During archeological excavations in the Lower Cerovačka Cave (Mt. Velebit, Croatia), the test trench penetrated to a depth of 1.8 m. An undisturbed sequence of sediments was exposed. Considering that caves represent highly efficient sediment traps it was
Tomislav Kurečić, Neven Bočić, Lara Wacha, Koraljka Bakrač, Anita Grizelj, Dinko Tresić Pavičić, Christopher Lüthgens, Andreja Sironić, Siniša Radović, Loris Redovniković, Markus Fiebig   +10 more
doaj   +1 more source

Study of water-level fluctuations throughout the deposition of the Gurpi Formation based on palynological data in the west of Dehrolan, south of Ilam [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2020
To analyze the sedimentary palaeoenvironment of the Gurpi Formation in Bisheh–Deraz section in south of Ilam, various factors including diversity and abundance of dinocysts, a ratio of Peridinioid to Gonyaulacoid (P/G) dinoflagellate cysts, palynofacies ...
Mahsa Amiri, Elahe Zarei
doaj   +1 more source

The Assessment of Organic Matter Young's Modulus Distribution With Depositional Environment and Maturity

Journal of Geophysical Research: Solid Earth, Volume 125, Issue 12, December 2020., 2020
Abstract Quantification of risk to seal integrity in CCS, or gas extraction from hydraulic fracturing, is directly affected by the accessibility of organic pores within organic rich mudrocks. Knowledge of the host organic matter's mechanical properties, which are influenced by depositional environment and thermal maturity, are required to reduce ...
T. D. Fender, C. Van Der Land, M. Rouainia, S. P. Graham, D. M. Jones, C. H. Vane, T. Wagner   +6 more
wiley   +1 more source

Turbidite‐induced re‐oxygenation episodes of the sediment‐water interface in a diverticulum of the Tethys Ocean during the Oceanic Anoxic Event 1a: The French Vocontian Basin

The Depositional Record, Volume 6, Issue 2, Page 352-382, June 2020., 2020
The oceanic anoxic event OAE1a episode has been recorded in the Vocontian Basin (SE‐France) but recurrent reworking (turbidites) altered the record. Abstract Widespread anoxic events affected the Tethys Ocean during the Mesozoic. The Ocean Anoxic Event 1a (Early Aptian), expressed as the Selli Level or Goguel Level (GL) in European basins.
Alexis Caillaud, Melesio Quijada, Bastien Huet, Jean‐Yves Reynaud, Armelle Riboulleau, Viviane Bout‐Roumazeilles, François Baudin, Anthony Chappaz, Thierry Adatte, Jean‐Noël Ferry, Nicolas Tribovillard   +10 more
wiley   +1 more source

Sedimentology, Palynofacies, and Hydrocarbon Potential of the Early Cretaceous Sarmord Formation from Khabbaz and Kirkuk Oil Fields, Northern Iraq

Iraqi Geological Journal, 2023
The Early Cretaceous Sarmord Formation of northern Iraq has been studied from two subsurface sections, Kirkuk Oil Field (well K-229) and Khabbaz Oil Field (well KH-14), through petrographic, palynolofacies and organic geochemical analyses.
Sardar Fatah, Razawa Sarraj, Basim Al-Qayim, Ibrahim Mohialdeen, Qahtan Al-Jubouri, Polla Khanaqa, Zana Mohammed   +6 more
doaj   +1 more source

Organic Facies: Palynofacies and Organic Geochemistry Approaches [PDF]

, 2012
Le concept de faciès organique, ainsi que les définitions et les moyens des différents faciès sont devenus un outil très important pour la caractérisation paléoenvironnementale, l'analyse des bassins et l'exploration des combustibles fossiles. L'application de ce concept est le meilleur moyen d'intégrer la microscopie et les techniques géochimiques ...
Joo Graciano Mendona Filho, Tassa Rgo, Joalice de Oliveira Mendona, Alessandro Silva de Oliveira, Taís Freitas da Silva, Noelia Franco, Frederico Sobrinho da Silv   +6 more
openaire   +1 more source

A palaeoenvironmental reconstruction based on palynological analyses of Upper Triassic and Lower Jurassic sediments from the Holy Cross Mountains region

Acta Palaeobotanica, 2014
The material for this study was taken from various sites in the Holy Cross Mountains: Studzianna, Huta OP-1 and Przysucha P-3 (bore cores), and Odrowąż (geological outcrop).
Krupnik Joanna, Ziaja Jadwiga, Barbacka Maria, Feldman-Olszewska Anna, Jarzynka Agata   +4 more
doaj   +1 more source