Results 11 to 20 of about 1,922,126 (208)

Discriminating Tectonic Setting of Igneous Rocks Using Biotite Major Element Chemistry−A Machine Learning Approach

Geochemistry, Geophysics, Geosystems, 2021
The composition of igneous biotite is a potential indicator of the geologic environment of its host rock. Here, we apply two machine learning models−eXtreemly Greedy tree Boosting (XGBoost) and light gradient boosting machine (LightGBM) to classify ...
Dewashish Upadhyay, Biswajit Mishra, Rupashree Saha   +2 more
exaly   +4 more sources

A Practical Approach for Discriminating Tectonic Settings of Basaltic Rocks Using Machine Learning

Applied 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.

exaly   +3 more sources

Geochemistry of sandstones and shales from the Ecca Group, Karoo Supergroup, in the Eastern Cape Province of South Africa: Implications for provenance, weathering and tectonic setting

Open Geosciences, 2017
Geochemical compositions of twenty-four sandstone and shale samples from the Ecca Group were analysed to decipher their provenance, paleoweathering conditions and tectonic setting. The shales have high Fe2O3, K2O, TiO2, Ce, Cu, Ga, La, Nb, Nd, Rb, Sc, Sr,
Baiyegunhi Christopher, Liu Kuiwu, Gwavava Oswald   +2 more
doaj   +2 more sources

Machine learning approaches in testing and enhancing tectonic setting discrimination of peridotites

Applied Computing and Geosciences
This study demonstrates the evolution from traditional geoscientific methods to data-driven approaches for determining the tectonic setting of peridotites using their chemical composition.
Monir Modjarrad, Hadi Mostafavi Amjad, Mahrokh G. Shayesteh, Amin Danandeh Hesar   +3 more
doaj   +2 more sources

Seismic anisotropy of the upper mantle beneath Thailand: Tectonic setting constrained by shear-wave splitting analysis [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2020
The tectonic setting of the lithosphere and upper mantle underneath Thailand varies and changes substantially over short distances. We have mapped these variations using shear wave splitting (SWS) analysis.
Wisawet Wongwai, Passakorn Pananont, Eric Sandvol, Kevin Furlong   +3 more
doaj   +1 more source

Petrography, geochemistry and depositional model of Ispikan Conglomerate, Makran Accretionary Prism, Southwest Pakistan

Kuwait Journal of Science, 2021
Depositional environments, provenance and tectonic settings of Ispikan group exposed in south west Makran, were revealed by lithofacies, petrography and geochemistry studies.
Muhammad Ahmed Farooqui, Khalil Ur Rehman, Amir Yaseen, Ghazala Roohi, Muhammad Umar   +4 more
doaj   +1 more source

Sedimentology and compositional characteristics of siliciclastic and associated sediments in Ruvu basin: implication on paleo-depositional environment, provenance, and tectonic setting

Geology, Ecology, and Landscapes, 2022
The paleo-depositional environment of the Ruvu basin ranges from alluvial, floodplain, low- and high-energy fluvial channels, and deltaic sub-environments of Ngerengere beds, Tanga beds, and Jurassic Msata formations.
Godson Godfray, Joyna Kabohola, Michael Msabi   +2 more
doaj   +1 more source

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

Journal 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, Mahdi Jafarzadeh, Ali Taheri, hamed zanmoghaddam   +3 more
doaj   +1 more source

Charnockites: Petrologic and phase equilibria characterization of some global examples

Geosystems and Geoenvironment, 2023
Charnockites (orthopyroxene-bearing granitoids) constitute one of the major components in many Precambrian high-grade metamorphic terranes of the world.
Toshiaki Tsunogae, Cheng-Xue Yang, M. Santosh   +2 more
doaj   +1 more source

Tectonic Influence on the Geomorphology of Submarine Canyons: Implications for Deep-Water Sedimentary Systems

Frontiers in Earth Science, 2022
A database-informed metastudy of 294 globally distributed submarine canyons has been conducted with the aim of elucidating the role of tectonic setting on submarine-canyon geomorphology.
Laura H. Bührig, Luca Colombera, Marco Patacci, Nigel P. Mountney, William D. McCaffrey   +4 more
doaj   +1 more source