DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBET
Seismic attributes analysis is applied to INDEPTH II seismic profiles to develop a better understanding of the deep crustal structure and geodynamics of the Lhasa Terrane in the central Tibet area. Analyses indicate that the frequency anomalies are obtained over the range in between 0-30 Hz. Some ar...
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2008-12-01
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| Series: | Earth Sciences Research Journal |
| Online Access: | http://www.revistas.unal.edu.co/index.php/esrj/article/view/21186 |
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| author | Ul-Islam Md. Sultan Keramat Mumnunul Islam Rezaul Rahman Syed Mustafizur |
| author_facet | Ul-Islam Md. Sultan Keramat Mumnunul Islam Rezaul Rahman Syed Mustafizur |
| author_sort | Ul-Islam Md. Sultan |
| collection | DOAJ |
| description | Seismic attributes analysis is applied to INDEPTH II seismic profiles to develop a better understanding of the deep crustal structure and geodynamics of the Lhasa Terrane in the central Tibet area. Analyses indicate that the frequency anomalies are obtained over the range in between 0-30 Hz. Some area of the analyzed traces of the seismic profiles have shown dominated frequency anomaly approximately 10 Hz with little amount of other frequencies. The variation of frequency anomaly is shown to be the indication of theMoho depth of the area. EstimatedMoho depths are found very irregular and varying from20 kmto more than 136 km. The crust is thinner in southern, northern and eastern parts of the area while it is thicker in the western part having asymmetric nature in the central part. This variation might be the result of the complicated tectonic process of the Indian and Eurasian plates. Vertically downward pocket like frequency distributions and similar type frequency distributions at near and far depth are also observed in one of the analyzed sections. It might be indication of uprised asthenospheric matter which exchanged with lithosphere in subduction zones related to the multiple crustal uprising. |
| format | Article |
| id | doaj-art-c2eabb3f8adb4971bdd47faf941ef3a2 |
| institution | Kabale University |
| issn | 1794-6190 |
| language | English |
| publishDate | 2008-12-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Earth Sciences Research Journal |
| spelling | doaj-art-c2eabb3f8adb4971bdd47faf941ef3a22025-08-20T03:53:38ZengUniversidad Nacional de ColombiaEarth Sciences Research Journal1794-61902008-12-01122156168DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBETUl-Islam Md. SultanKeramat MumnunulIslam RezaulRahman Syed MustafizurSeismic attributes analysis is applied to INDEPTH II seismic profiles to develop a better understanding of the deep crustal structure and geodynamics of the Lhasa Terrane in the central Tibet area. Analyses indicate that the frequency anomalies are obtained over the range in between 0-30 Hz. Some area of the analyzed traces of the seismic profiles have shown dominated frequency anomaly approximately 10 Hz with little amount of other frequencies. The variation of frequency anomaly is shown to be the indication of theMoho depth of the area. EstimatedMoho depths are found very irregular and varying from20 kmto more than 136 km. The crust is thinner in southern, northern and eastern parts of the area while it is thicker in the western part having asymmetric nature in the central part. This variation might be the result of the complicated tectonic process of the Indian and Eurasian plates. Vertically downward pocket like frequency distributions and similar type frequency distributions at near and far depth are also observed in one of the analyzed sections. It might be indication of uprised asthenospheric matter which exchanged with lithosphere in subduction zones related to the multiple crustal uprising.http://www.revistas.unal.edu.co/index.php/esrj/article/view/21186 |
| spellingShingle | Ul-Islam Md. Sultan Keramat Mumnunul Islam Rezaul Rahman Syed Mustafizur DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBET Earth Sciences Research Journal |
| title | DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBET |
| title_full | DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBET |
| title_fullStr | DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBET |
| title_full_unstemmed | DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBET |
| title_short | DEEP CRUSTAL STRUCTURE AND ESTIMATION OF MOHO IN THE LHASA TERRANE OF CENTRAL TIBET |
| title_sort | deep crustal structure and estimation of moho in the lhasa terrane of central tibet |
| url | http://www.revistas.unal.edu.co/index.php/esrj/article/view/21186 |
| work_keys_str_mv | AT ulislammdsultan deepcrustalstructureandestimationofmohointhelhasaterraneofcentraltibet AT keramatmumnunul deepcrustalstructureandestimationofmohointhelhasaterraneofcentraltibet AT islamrezaul deepcrustalstructureandestimationofmohointhelhasaterraneofcentraltibet AT rahmansyedmustafizur deepcrustalstructureandestimationofmohointhelhasaterraneofcentraltibet |