Results 11 to 20 of about 6,151 (165)

Petrography and geochemistry of siliciclastic sedimentary rocks of the Padeha Formation in Khoshyeilagh section; Eastern Alborz; implication for provenance [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2019
In this study, petrography and geochemistry of the sandstones and shales of Padeha Formation in Khoshyeilagh section in Eastern Alborz have been used to obtain more information on their provenance.
Mehdi Hosseini   +3 more
doaj   +1 more source

Bibliometric analysis of natural lakes and paleolakes origin of natural events [PDF]

open access: yesE3S Web of Conferences
This study explores studies on lakes and paleolakes originating from natural effects. The main objective is to perform a bibliometric analysis of research on naturally occurring lake environments worldwide, covering the period from 2014 to 2024.
Abbach Jamal   +3 more
doaj   +1 more source

A practical approach for discriminating tectonic settings of basaltic rocks using machine learning

open access: yesApplied Computing and Geosciences, 2023
Elucidating the tectonic setting of unknown rock samples has long attracted the interest of not only igneous petrologists but also a wide range of geoscientists.
Kentaro Nakamura
doaj   +1 more source

Geochemical signatures of Lower Gondwana sandstones of eastern Arunachal Himalayas, India: Implications for tectonic setting, provenance and degree of weathering

open access: yesRussian Journal of Earth Sciences, 2020
The compositional variability of the sandstones leads to insight about the controlling sedimentary processes and plate tectonic environments. The geochemical composition of the Lower Gondwana sandstones exposed along the Main Boundary Thrust in parts of ...
Mahanta Bashab N   +4 more
doaj   +1 more source

Petrography and Tectonic Provenance of the Cretaceous Sandstones of the Bredasdorp Basin, off the South Coast of South Africa: Evidence from Framework Grain Modes

open access: yesGeosciences, 2020
The Cretaceous sandstones of the Bredasdorp Basin were investigated to recognize their composition, provenance, and tectonic setting. Ninety-two samples of sandstones from exploration wells E-AH1, E-AJ1, E-BA1, E-BB1, and E-D3 were investigated using ...
Temitope Love Baiyegunhi   +3 more
doaj   +1 more source

Geochemical characterization of FE-1 well, Onshore Western Niger Delta Basin, Nigeria

open access: yesJournal of Applied Sciences and Environmental Management, 2020
Major oxides and trace elements analysis was carried out on ditch cutting samples of FE-1 well, Onshore, Niger Delta Basin, to define their oxygen condition, paleo-climatic conditions, provenance, tectonic setting, sandstone classification and maturity ...
F.O. Amiewalan, F.A. Lucas
doaj   +1 more source

Sedimentology and geochemistry of Zubair Formation sandstone reservoir, East Baghdad Oilfield, central Iraq

open access: yesKuwait Journal of Science, 2023
Two wells (EB10 and EB92) within the East Baghdad Oilfields in central Iraq were chosen to study the Zubair Formation sandstones. The Zubair sandstones mostly consist of quartz (84–97.5%), feldspar (0–2.9%), and heavy minerals (0.1–1%) with a few rock ...
Rana A. Ali, Hassan K. Jassim
doaj   +1 more source

Tectonic setting of kimberlites

open access: yesLithos, 2009
Kimberlites can be viewed as time capsules in a global plate tectonic framework. Their distribution illustrates clustering in time and space. Kimberlite ages span the assembly and break-up of a number of supercontinents, such as Rodinia and Gondwana.
Jelsma, Hielke   +3 more
openaire   +3 more sources

Testing of multidimensional tectonomagmatic discrimination diagrams on fresh and altered rocks

open access: yesGeologica Carpathica, 2016
We evaluated 55 multidimensional diagrams proposed during 2004-2013 for the tectonic discrimination of ultrabasic, basic, intermediate, and acid magmas.
Rivera-Gómez M. Abdelaly   +1 more
doaj   +1 more source

Petrological and geochemical constraints on tectonic settings of the Late Carboniferous-Early Permian, Central Junggar, China

open access: yesJournal of Natural Gas Geoscience, 2020
It is assumed that the central part of Junggar underwent continuous deposition from the Mesozoic to Cenozoic, but few data are available from deep well to support this hypothesis.
Shuncun Zhang   +5 more
doaj   +1 more source

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