Results 21 to 30 of about 761 (228)
Experimental metamorphic petrology
Eos, Transactions American Geophysical Union, 1971 Experimental studies in the last quadrennium that are applicable to metamorphic petrology are many and varied. They range from the rigorous formulation of P‐T diagrams to thermochemical studies and solubility measurements. One encouraging feature of the large number of studies is an attempt to correlate the various studies with those of other workers ...
David A. Hewitt, David R. Wones
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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
Petrology and geochemistry of leucogranites of the Deh-Salm metamorphic igneous complex (east of Lut) [PDF]
پترولوژیIntroduction The Deh-Salm igneous–metamorphic complex in the Lut Block of eastern Iran exposes some of the most representative high-grade metamorphic rocks and peraluminous granitoids in the region.
Shahryar Mahmoudi +2 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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World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin
Deep Underground Science and Engineering, EarlyView.The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan +4 more
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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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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
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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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Geological Journal, EarlyView.The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang +6 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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