Aeromagnetic Data Interpretation To

World Applied Sciences Journal 6 (10): 1429-1432, 2009 ISSN 1818-4952 © IDOSI Publications, 2009 Corresponding Author: Dr. Mohammad Aryamanesh, Department of Geology, Faculty of Sciences, Yazd University, Pajouhesh St., Yazd, Iran 1429 Aeromagnetic Data Interpretation to Locate Buried Faults in Yazd Province - Iran Mohammad Aryamanesh Department of Geology, Faculty of Sciences, Yazd University, Pajouhesh St., Yazd, Iran Abstract: The aeromagnetic data is used in the reduction to poll, first order derivation in vertical direction to elucida te the subsu rface str uctures and to locate buried faults of Yazd Province, Iran. Two interpreted magnetic basement structur al (IMBS) maps were constructed along the two computed interfaces to show the structural setting of the study area. This includes the display of the uplifted and subsided blocks in the area. Filtering combined with analytical high ward continuation on the two assigned interfaces was then conducted. The struct ural elements affecting the basement complex at the two assigned interfaces were delineated and the fault system was statistically analyz ed to determine the main structural trends affecting the study area . The interpretation of this survey has been successful at mapping several sets of basement faults. The data reveal a suite of northwesterly-trending curving and branching faults that surround a relatively coherent block in the area. Key words: Aeromagnetic %Buried Faults %Structural Map %Yazd INTRODUCTION MATERIALS AND METHODS Aer omagneti c applic at ions ar e we ll k nown in a wi de Sev er al int er pr et ati on methods wer e appli ed wi th the variety of geological studie s and they play an import ant final goal o f enhancing the signature of hidden faults. role in t rac ing li thological c ont acts and t o reco gni ze the Diffe renc es in layer thi ckness , depth to th e laye r(s ) and structure s li ke f aul ts, Lineament s, d yke s an d la yer ed mag net ic susc ept ibil ity govern the va ria bil ity of the comple xes . Aeromagneti c data can be used along with anomaly sha pe. F urt her i nve stig ati ons of th ese var iables conven tional ge ologic al maps fo r variou s earth re source usin g simple models provide graphic al, mathematical and evalua tion applica tions [1]. The regiona l aeroma gnetic conceptu al gu ides for underst anding the a eromag netic study of anomaly map brings out the regional geologi cal exp ress ionof faults, incl udi ng the criteria for aeromagnetic pattern and structural features and provides an expression of faults, how to locate fault traces from except ional backgr ound for interpr etatio n for specif ic aer oma gne tic anoma lies,the effect of fault dip and how to purpos es [2]. In order to increase confidence in the assess the role of topography. The reduction to pol l, first locat ions of bur ied faults a high -re sol uti on aer oma gne tic order der ivat ion in ver tica l dir ecti on to elucida te the survey was conduc ted ov er a 131575 km are a in Yaz d subsur fac e st ruc tur es a nd to loc ate bur ied faults of Yazd 2 Province, Central Iran. Province, Iran. Two i nterpreted magnetic basement The pr inc ipa l obj ect ive s are to de marcat e the buri ed structural (IMBS) map s were con str uct ed alon g the two faults and to define the dept hs of magnet ic sources computed int erfa ces to show the stru ctural sett ing of the and also to ide nti fy the impo rta nt tre nds and str uctu res stu dy are a. in the magne tic ano maly fiel d. The line ar anomal ies A re du ct ion -to- pole (RTP) tr ans format ion is standar d give an unpara lleled view of concealed faults within applied to aer oma gne tic data to minimi ze pol ari ty effects the basi n tha t has si gni fica nt implic ati ons f or fut ure [3]. These effects a re manifested as a shift of the main basin studies. These implications p rovide the impetus for anomaly from the center of the magnetic source and are under stan ding the aer oma gne tic expr ess ion of faults in due to the vec tor nat ure of the meas ured magnet ic f iel d. greater detail. The RTP transformation usually involves an assumption

Aeromagnetic Data Interpretation To

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