Results 21 to 30 of about 741 (232)
Petrology of blueschist facies metamorphic rocks of the Meliata Unit [PDF]
Acta Montanistica Slovaca, 1997 Meliata blueschists originated from basalts, limestones, pelites, psammitic and amphibolite facies basement rocks. Compositionally, the metabasalts have a geochemical signature mostly indicative of a transitional arc-MORB origin, but some mafic rocks ...
Faryad Shah Wali
doaj
Geologica Carpathica, 2015 The Marziyan granites are located in the north of Azna and crop out in the Sanandaj-Sirjan metamorphic belt. These rocks contain minerals such as quartz, K-feldspars, plagioclase, biotite, muscovite, garnet, tourmaline and minor sillimanite.
Darvishi Esmaiel +3 more
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THE SEDIMENTARY GEOLOGY, REMOTE SENSING, GEOMORPHOLOGY AND PETROLOGY OF MIOCENE TO LATE PLIOCENE SEDIMENTS IN DISTRICT SUDHUNHOTI AND POONCH, AZAD JAMMU AND KASHMIR, PAKISTAN [PDF]
Earth Science Malaysia, 2017 A research work was embarked in the area in order to understand the sedimentary geology, remote sensing, geomorphology and petrology of the district Sudhunhoti and Poonch, Azad Jammu and Kashmir, Pakistan.
Muhammad +3 more
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Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Frontiers in Earth Science, 2021 The Tuwu porphyry copper deposit is located on the Dananhu-Haerlik island arc in eastern Tianshan, NW China. Based on geology, petrology, and in situ trace element studies of pyrite and chlorite, we redefined the characteristics of hydrothermal fluids ...
Wei Tan +6 more
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Mesozoic–Cenozoic Thermochronology of the Tarim–Southern Tianshan System, NW China
Geological Journal, EarlyView.Tectonothermal history of the Tarim–Southern Tianshan system compared with the major tectonic events at far‐field plate margins. ABSTRACT The Tarim Basin, an oil‐bearing basin in northwest China, is tectonically and sedimentologically linked to the Southern Tianshan Orogenic Belt.
Shuangfeng Zhao +4 more
wiley +1 more source
Mafic High‐Pressure Rocks Are Preferentially Exhumed From Warm Subduction Settings
Geochemistry, Geophysics, Geosystems, 2018 The oceanic crust that enters a subduction zone is generally recycled to great depth. In rare and punctuated episodes, however, blueschists and eclogites derived from subducted oceanic crust are exhumed.
Peter E. vanKeken +4 more
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Multifractal model of magnetic susceptibility distributions in some igneous rocks [PDF]
Nonlinear Processes in Geophysics, 2012 Measurements of in-situ magnetic susceptibility were compiled from mainly Precambrian crystalline basement rocks beneath the Colorado Plateau and ranges in Arizona, Colorado, and New Mexico.
M. E. Gettings
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Geological Journal, EarlyView.This work advances landslide susceptibility mapping by incorporating short‐term trigger data with landscape susceptibility mapping. We also examine the importance of downsampling, watershed delineation and geospatial correlations in evaluating outcomes.
Kanta Kotsugi +3 more
wiley +1 more source
Igneous and Metamorphic Petrology
Eos, Transactions American Geophysical Union, 1983 So many new and exciting topics in petrology have appeared over the last several years that it has become difficult to find a text that deals adequately with fundamentals as well as current topics; the present book may be one of the better texts in its field today because it achieves this combination with clarity and appropriate emphasis.
openaire +1 more source