Results 11 to 20 of about 26,348 (308)
Anais da Academia Brasileira de Ciências, 2021 Modal classifications of common volcanic rocks are expensive, difficult, or impossible to attain. As a consequence, these rocks are classified using the chemical composition.
JOÃO O.S. SANTOS, LÉO A. HARTMANN
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Geomechanical characterization of volcanic rocks using empirical systems and data mining techniques
Journal of Rock Mechanics and Geotechnical Engineering, 2018 This paper tries to characterize volcanic rocks through the development and application of an empirical geomechanical system. Geotechnical information was collected from the samples from several Atlantic Ocean islands including Madeira, Azores and ...
T. Miranda +4 more
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Yankuang ceshi, 2016 Intermediate-felsic volcanic rock has porphyritic texture and the matrix is characterized by microlitic, cryptocrystalline and vitreous textures. There will be errors when identifying and classifying the rocks using only a polarizing microscope because ...
XU Cui +5 more
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E3S Web of Conferences, 2019 The structural lineaments developed in the Kulon Progo Mountains, which is mainly composed of Tertiary volcanic rocks. The direction and distribution of these lineaments density differs from one area to another.
Widagdo Asmoro +2 more
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Soil & Environment, 2018 Andisols is a variable charge soil where fertilizations to the soil do not give the same result as that to the soils with permanent charges. Therefore, amelioration is needed to improve the soil chemical properties.
Mahfud Arifin +5 more
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Jurnal Teknik Hidraulik, 2021 The construction of the Tugu Dam spillway does not escape the problem of slope instability, especially the rock fall type landslide as a result of the rock slope cutting work at STA+80.
Muhammad Iqbal Hamidi +1 more
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Brazilian Journal of Radiation Sciences, 2021 Volcanic rock is a designation in geology given to extrusive igneous rocks. One type of igneous rock of interest, in economic terms, is vesicular, since, besides the knowledge of the morphology (positioning, size, direction, and interconnectivity of the ...
Rodrigo Silva Santos +7 more
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New Permo-Carboniferous geochemical data from central Thailand: implication for a volcanic arc model [PDF]
, 1991 Current ideas and models of geotectonic reconstructions of Southeast Asia are reviewed and new data on Late Carboniferous through Middle Permian tuffites and sills from central Thailand are presented in the light of the problems of Southeast Asian ...
Altermann, Wladyslaw
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