Magnetic signal approach to the interpretation of meteorite impact crater at Bukit Bunuh
Nordiana Mohd Muztaza(a*), Rosli Saad(a), Mokhtar Saidin(b), Kiu Yap Chong(a), Nur Azwin Ismail(a), Noer El Hidayah Ismail(c)
a)Geophysics Section, School of Physics, 11800, Universiti Sains Malaysia, Penang, Malaysia.
*mmnordiana[at]usm.my
b)Centre for Global Archaeological Research Malaysia, 11800, Universiti Sains Malaysia, Penang, Malaysia
c)Department of Geology, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
Abstract
Bukit Bunuh is situated in Lenggong valley, north of Kota Tampan, Perak state, Malaysia. Meteor impact crater is also known as a small impact crater and has approximately circular depression in the surface of the Earth. This paper present the magnetic map for Bukit Bunuh impact structure presented in a form of contouring image. To detect the impact structure and its structural attribute, a series of magnetic profiles were measure across the suspected area. Magnetic measurement was conducted using Geometric G-856 Proton Precision magnetometers to measure the earth-s total magnetic field and the data was processed using Surfer8 software. Analytic signal map was produced showing low magnetic value which indicate as impact crater filled with sediments, surrounded by high magnetic value which interpreted as rebounds zone. Crater dimensions are estimated about 5 km with central uplift at the Bukit Bunuh area.
Keywords: Bukit Bunuh; Magnetic; Analytic signal; Impact crater
Topic: Magnetic Methods