Results 91 to 100 of about 13,641 (263)
A Spectral and Spatial Comparison of Satellite-Based Hyperspectral Data for Geological Mapping
Remote SensingThe new generation of satellite hyperspectral (HS) sensors provides remarkable potential for regional-scale mineralogical mapping. However, as with any satellite sensor, mapping results are dependent on a typically complex correction procedure needed to ...
Rupsa Chakraborty +7 more
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Geochemistry of syenite of the Phalaborwa Carbonatite Complex, South Africa [PDF]
, 2003 We surveyed the Spitskop syenite pipe,one of the satellite bodies of the Phalaborwa Carbonatite Complex located in northeastern Transvaal,South Africa. This pipe is composed of the inner cumulus syenite and outer ring syenite.The brecciation zone between
Hiroo Kagami +4 more
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Geochronology of the Arkanas Alkaline Province, Southeastern United States [PDF]
, 2009 The Arkansas alkaline province (AAP) consists of intrusive bodies ranging in lithology from carbonatite and lamproite through nepheline syenite. Apatite and titanite fission-track ages fall into two groups-101-94 Ma and ∼88 Ma.
Eby, G. Nelson, Vasconcelos, Paulo
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Minerals, 2019 The Weishan carbonatite-related rare earth element (REE) deposit in China contains both high- and low-grade REE mineralization and is an informative case study for the investigation of magmatic–hydrothermal REE enrichment processes in such deposits.
Yu-heng Jia, Yan Liu
semanticscholar +1 more source
Research in volcanic geology, petrology and planetary science at MIT, 1969 to 1974 [PDF]
The behavior of volcanoes was studied by geologic mapping, petrologic investigations of lava and xenoliths, physical measurements, and theoretical modelling. Field observations were conducted in Alaska (Nunivak Island), Iceland, Hawaii (Mauna Kea), Italy
Mcgetchin, T. R.
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Entrained Macrocryst Minerals as a Key to the Source Region of Olivine Nephelinites: Humberg, Kaiserstuhl, Germany [PDF]
, 2017 Olivine nephelinites commonly contain macrocrysts of olivine and clinopyroxene. Some of these macrocrysts might represent fragments of the source region of the host magma transported to the Earth's surface.
Müntener, Othmar +3 more
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Minerals, 2019 Carbonatites undergo various magmatic-hydrothermal processes during their evolution that are important for the enrichment of rare earth elements (REE).
Frances Chikanda +5 more
semanticscholar +1 more source
Kashmir Journal of ScienceThe Sillai Patti carbonatite complex constitutes the second largest carbonatite complex of the Peshawar Plain Alkaline Igneous Province of northern Pakistan. It is located about 20 km west of Malakand, near Sillai Patti village.
Nimat Ullah Khattak, Y.X. Zhu, C.Q. Ma, L.X. Wang and W. Wang
doaj
On the Feasibility of Imaging Carbonatite-Hosted Rare Earth Element Deposits Using Remote Sensing [PDF]
Rare earth elements (REEs) generate characteristic absorption features in visible to shortwave infrared (VNIR-SWIR) reflectance spectra. Neodymium (Nd) has among the most prominent absorption features of the REEs and thus represents a key pathfinder ...
Black, Martin +6 more
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Carbonatite metasomatism, the key to unlocking the carbonatite-phoscorite-ultramafic rock paradox
Chemical Geology, 2022 O. Vasyukova, A. Williams-Jones
semanticscholar +1 more source