Analisis Kumpulan Unsur Platinum (Pge), Nikel (Ni) Dan Kromium (Cr) Di Tapak Prasejarah Bukit Bunuh, Lenggong, Perak Untuk Pembuktian Impak Meteorit
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Date
2021-08
Authors
Abdul Mutalib Bin Abdullah
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia.
Abstract
Bukit Bunuh prehistoric site (BBH) was found in 2001 during a palaeoenvironmental
survey by Centre for Global Archaeological Research USM. BBH is
situated at 100° 58’ 05” East dan 5° 04’ 05” North.BBH revealed the meteorite impact
event and Paleolithic stone tools through the megascopic, macroscopic, and microscopic
evidence. The purpose of this study is to determine the concentration of siderophile
elements such Platinum Group /PGE (Os, Ir, Ru, Rh, Pt, Pd, and Re), Nickel (Ni), and
Chromium (Cr) in BBH rocks. The methods used are X-Ray Fluorescence (XRF),
Neutron Activation Analysis (NAA), and Inductive Couple Plasma-Mass Spectroscopy
(ICPMS). 20 impact-related rocks from inside the crater such as impact melt, seuvite,
metasediment impact, quartz impact, & granite impact and six (6) target rocks from
outside the crater such as slate, limestone, granite biotite, syiz quartz, red quartz and
grey quartz were analyzed. The results showed some significant concentration of PGEs
compared to the continental crust concentration. For an example, concentration of
iridium (Ir) inside the crater is 0.3 ppb, which is 10 times higher than the bulk
continental crust value (0.022 ppb).
Description
Keywords
Analisis Kumpulan , Pembuktian Impak Meteorit , Tapak Prasejarah