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Petrogenesis of amphibolites in Amphoe Wang nam khiao area, Changwat Nakhon Ratchasima |
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| รหัสดีโอไอ | |
| Title | Petrogenesis of amphibolites in Amphoe Wang nam khiao area, Changwat Nakhon Ratchasima |
| Creator | Vanachawan Hunyek |
| Contributor | Chakkaphan Sutthirat |
| Publisher | Chulalongkorn University |
| Publication Year | 2555 |
| Keyword | หิน -- ไทย -- นครราชสีมา, Rocks -- Thailand -- Nakhon Ratchasima |
| Abstract | Amphibolites around Ban Yup I Pun and Ban Nong Mai Daeng in Wang Nam Khiao area have sparsely exposed within an area of about 65 km². Over 40 rock samples were collected from various amphibolite exposures, for petrographic investigation, whole-rock geochemical and mineral chemistry analyses. Based on petrographic features, these rock samples can be classified as coarse-grained granular amphibolites, layered amphibolites and migmatitic amphibolites. Geochemically, these amphibolites appear to have mafic igneous origin with a signature of oceanic remnant; moreover, indication of E-MORB-type within arc affinities is also observed for their initial provenance. Chondrite-normalized rare earth element (REE) and other trace element patterns supported that amphibolites should have been derived from island arc-related E-MORB. Regarding to P-T calculations, these amphibolites clearly belong to amphibolites facies with estimated P-T of about 686+32°C and 4.2+ 1 Kbar. |
| URL Website | cuir.car.chula.ac.th |
