Pixels of an image often correspond to heterogeneous areas in the field and a direct comparison between airborne and in situ spectra is not straightforward. We take advantage of this observation to split the data into two subsets, corresponding to the mantle and crustal sequences, respectively. With the exception of wehrlite, spectra of olivine-rich end-members display characteristic Mg-OH narrow absorption features caused by their high serpentine content. In the crustal sequence, we therefore identified four end-members with variable abundance of clinopyroxene: (1) massive gabbros, (2) amphibolized (upper) gabbros associated with intrusive dykes, (3) wehrlite with high serpentine content, and (4) gabbronorite (a lithology not previously recognized in the studied area). Because plagioclase is spectrally featureless in the wavelength range studied it cannot be detected. On the basis of spectral signatures, we are able to distinguish three end-members of olivine-orthopyroxene bearing assemblages in the mantle sequence: (1) harzburgites, (2) dunites, and (3) a harzburgite with interstitial carbonate.
Our objective was to identify and map the various igneous lithologies by a direct comparison at high spectral resolution between field and airborne spectra despite strong variations in outcropping conditions such as (1) lighting, (2) surface roughness geometry, (3) blocks coated with red/brown patina and exfoliation products, or (4) deep hydrothermal weathering. An ASD FieldSpec3 spectrometer was also used in order to constrain the spectral signatures of the principal lithologies cropping out in the surveyed area. So, get ready to find and buy all your desirable products from your best-loved brands on Ubuy.An airborne hyperspectral survey of the Oman ophiolite (Sumail Massif) has been conducted using the HyMap airborne imaging spectrometer with associated field measurements (GER 3700). Searching for your preferred products and brands across towns and cities may not be necessary for this modern technological era since your products are just one click away. You can discover the latest offers on Aqualogix products and save money each time you decide to purchase. To find a perfect collection of unique and popular global products from Aqualogix, Ubuy online shopping can help you to get the right product that suits your specific requirements. It is also the right place to find products that are not easily available elsewhere. If you are looking for exclusive Aqualogix products online in Curepipe, Port Louis, Quatre Bornes, Grand Port, Moka, Plaines Wilhems, Pamplemousses, etc you can find it effortlessly on Ubuy which is a one-stop-shop to explore from over 100 million products and brands from international market.
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