西菲律賓海盆西部的海床構造分析

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姓名

張晉銘(Ching-ming Chang) 查詢紙本館藏

畢業系所

地球物理研究所

論文名稱

西菲律賓海盆西部的海床構造分析
(Seafloor structures in western West Philippine Basin)

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摘要(中)

西菲律賓海盆一般認為從53 Ma開始擴張，在33/30 Ma時停止。擴張之初，海床擴張的速率較快(速率約為44 mm/yr)，因此在盆地的邊緣區域，留下一些海床快速擴張所產生的構造，例如在西菲律賓海盆的北部區域，有許多重疊的中洋脊擴張中心(Overlapping Spreading Center, OSC)的出現。重疊中洋脊擴張中心指的是一種海床構造，發生在快速擴張的中洋脊，在轉形斷層無法產生於兩個錯動的海脊之間時，取而代之的一種海脊輕微重疊的構造，此種構造也可能由擴張時的岩漿供應量較大所產生。
我們在西菲律賓海盆西北部(123°E以東)的地區收集多頻道水深及磁力資料，本研究主要是利用這些最新收集的多音束水深資料研究位於呂宋─沖繩破裂帶(Luzon-Okinawa Fracture Zone)和加瓜海脊(Gagua Ridge)之間的海床構造。研究區域內有三條明顯為東北─西南向的破裂帶，此破裂帶走向和研究區內的深海丘陵走向皆顯示為東北─西南方向擴張，與其東邊的西菲律賓海盆的北部和南部之第一期海床擴張走向一致，此意味本研究區的海盆同為第一期擴張時所形成。另外在研究區北部有明顯重疊擴張中心(OSC)的存在，我們認為可能是快速擴張海盆的岩漿供應量較南部為多所造成，且推測當時中洋脊的岩漿不但向兩側推動，也向東南方前進。
研究區的海盆擴張可以用單一個階段表示，並不像呂宋─沖繩破裂帶以東的地區，因為擴張軸的旋轉而有三個擴張階段，因此，在呂宋─沖繩破裂帶與第二期海床擴張接觸面當時應為轉形斷層帶。另藉由研究區內破裂帶兩側的鋸齒狀水深特性，推測東側海洋地殼年齡應較西側為老。

摘要(英)

West Philippine Basin (WPB) was generally thought to start spreading at 53 Ma and end at 33/30 Ma. In the early of spreading, the spreading rate was faster (nearly 44 mm/yr). Therefore there are some fast-spreading structures whish has been found in the region area of the basin. For example, there are many overlapping spreading centers (OSC) in the northern part of WPB. OSC seafloor structure occurs in fast-spreading ridge and replaces the transform fault of two cross ridges. The structure may also happen magma supply is larger.
We have collected bathymetric data in the north-eastern part of the West Philippine Basin. This study uses these new data to analyze the seafloor structures between Luzon-Okinawa Fracture Zone and Gagua Ridge. There are three major NE-SW oriented fracture zones in the study area. These fracture zones and abyssal hills all pointed out the direction of spreading in NE-SW, which is the same as in northern and southern part of WPB. It implies that this study area is formed in the first spreading stage of WPB. Besides, there is an OSC existing in north of the study area. We think it is because of the magma supply in fast spreading rate more than in the south. We infer that magma supply was propagating southeastward.
Spreading in this study area could be just one single stage. It is different from east of Luzon-Okinawa Fracture Zone which had axis rotation and displayed three spreading stage. Therefore, the connection between Luzon-Okinawa Fracture Zone and the second spreading stage of WPB was a transform fault in that time. Moreover, because of the saw-type character of bathymetry across any fracture zone in study area, we can expect the ocean crust in east side could be order.

關鍵字(中)

★ 水深
★ 重疊擴張中心
★ 西菲律賓海盆

關鍵字(英)

★ overlapping spreading center
★ West Philippine Basin
★ bathymetry

論文目次

中文摘要..................................................i
英文摘要................................................iii
誌謝.....................................................iv
目錄......................................................v
圖目....................................................vii
表目.....................................................ix
第一章緒論.............................................1
第二章資料與分析方法...................................6
2.1.水深資料..............................................7
2.1.1.多頻道水深資料測量原理..............................8
2.1.2.資料處裡流程.......................................10
第三章多頻道水深地形、構造與火成活動..................20
3.1. 深海丘陵的走向與高低................................22
3.2. 破裂帶附近的地形....................................24
3.3. 偽斷層(Pseudo-fault) ...............................27
3.4. 海底火山的形貌......................................27
3.5. 磁力異常............................................29
3.6. 重疊擴張中心 (Overlapping Spreading Center,OSC) .............................................30
3.6.1. OSC底下的軟流圈流動...............................32
3.6.2. OSC 的生成模型....................................33
3.6.3. 本區域的OSC生成模型...............................34
3.7. 海洋板塊的相對年齡..................................36
第四章結論............................................39
參考文獻.................................................40

參考文獻

DeMets, C., R. G. Gordon, D. F. Argus, and S. Stein, Current plate motions, Geophys. J. Int., 101, 425– 478, 1990.
Fox, P. J. and Gallo, D. G., A tectonic model for ridge-transform-ridge plate boundaries: Implications for the structure oceanic lithosphere. Tectonophysics, 104, 205-42. 1984.
Deschamps, A., S. Lallemand, and J.-Y. Collot, A detailed study of the Gagua Ridge: A fracture zone uplifted during a plate reorganization in the Mid-Eocene, Mar. Geophys. Res., 20, 403– 423, 1998.
Deschamps, A., P. Monie´, S. Lallemand, S.-K. Hsu, and K. Y. Yeh, Evidence for Early Cretaceous oceanic crust trapped in the Philippine Sea Plate, Earth Planet. Sci. Lett., 179, 503– 516, 2000.
Deschamps, A., Okino, K, and Fujioka, K., Late amagmatic extension along the central and eastern segments of the West Philippine Basin fossil spreading axis, Earth Planet. Sci. Lett., 203, 277– 293, 2002
Douglas S. Wilson, Kinematics of overlapping rift propagation with cyclic rift failure, Earth Planet. Sci. Lett., 96, 384-392, 1990
Girardeau, J., C. Monnier, P. Launeau, and F. Quatrevaux, Kinematics of mantle flow beneath a fossil Overlapping Spreading Center: The Wuqbah massif case, Oman ophiolite, Geochem. Geophys. Geosyst. , 3(7), 10.1029/2001GC000228, 2002.
Goud, H. R. and Karson, J. A. Tectonics of short-offset, slow slipping transform zones in the FAMOUS area, Mid-Atlantic Ridge. Mar. Geophys. Res., 7, 489-514, 1986.
Hall, R., Cenozoic plate tectonic reconstructions of SE Asia, in Petroleum Geology of Southeast Asia, edited by Matthews and Murphy, Geol. Soc. Spec. Publ., 126, 11 –23, 1997.
Hall, R., J. R. Ali, C. D. Anderson, and S. J. Baker, Origin and motion history of the Philippine Sea Plate, Tectonophysics, 251, 229 – 250, 1995a.
Hall, R., J. R. Ali, and C. D. Anderson, Cenozoic motion of the Philippine Sea Plate: Paleomagnetic evidence from eastern Indonesia, Tectonics, 14, 1117– 1132, 1995b.
Hilde, T. W. C., and C.-S. Lee, Origin and evolution of the West Philippine Basin: A new interpretation, Tectonophysics, 102, 85– 104, 1984.
Karig, D. E., Basin genesis in the Philippine Sea, in Initial Reports of the Deep Sea Drilling Project, vol. 31, pp. 857– 879, U.S. Govt. Print. Off., Washington, D. C., 1975.
Lee, T. Y., and L. A. Lawver, Cenozoic plate reconstruction of Southeast Asia, Tectonophysics, 251, 85– 138, 1995.
Lewis, S. D., D. E. Hayes, and C. L. Mrozowski, The origin of the west Philippine basin by inter-arc spreading, Geology and tectonics of Luzon and Marianas region, in Proceedings of CCOP-IOC-SEATAR Workshop, Manila, Philippines, Spec. Publ., edited by G. R. Blace and F. Zanoria, vol. 1, pp. 31– 51, Philipp. SEATAR Comm., Manila, 1982.
Okino, K., Y. Ohara, S. Kasuga, and Y. Kato, The Philippine Sea: New survey results reveal the structure and the history of the marginal basins, Geophys. Res. Lett., 26, 2287– 2290, 1999.
Okino, K., and K. Fujioka, The Central Basin Spreading Center in the Philippine Sea: Structure of an extinct spreading center and implications for marginal basin formation, J. Geophys. Res., 108(B1), 2040, doi:10.1029/2001JB001095, 2003.
Macdonald, K. C. Fine scale tectonic and hydrothermal processes within the plate boundary zone. Ann. Rev. Earth Planet. Sci., 10, 155-90, 1982.
Linkages between faulting, volcanism, hydrothermal activity and segmentation on fast spreading centers. In R. W. Buck, ed., Faulting and Magmatism at Mid-ocean Ridges. Geophysical Monograph 106. Washington: American Geophysical Union, pp.27-58, 1998.
Macdonald, K. C., Sempère, J. C., Fox, P. J. and Tuce, R., Tectonic evolution of ridge axis discontinuities by the meeting, linking, or self-decapitation of neighbouring ridge segments. Geology, 15, 993-7, 1987.
Mrozowski, C. L., S. D. Lewis, and D. E. Hayes, Complexities in the tectonic evolution of the West Philippine Basin, Tectonophysics, 82, 1– 24, 1982.
Park, C.-H., K. Tamaki, and K. Kobayashi, Age-depth correlation of the Philippine Sea back-arc basins and other marginal basins in the world, Tectonophysics, 181, 351– 371, 1990.
Rangin, C., and M. Pubellier, Subduction and accretion of oceanic fragments along the Eurasian Margin, in Tectonics of Circum Pacific Continental Margins, edited by J. Aubouin and J. Bourgois, pp. 139– 164, VSP Int. Publ., Utrecht, 1990.
Rangin, C., L. Jolivet, and M. Pubellier, A simple model for the tectonic evolution of Southeast Asia and Indonesia regions for the past 43 Ma, Bull. Soc. Geol. Fr., 6, 887– 905, 1990.
Sclater, J. G., Heat flow and elevation of the marginal basins of the western Pacific, J. Geophys. Res., 77, 5705– 5719, 1972.
Seno, T., and S. Maruyama, Paleogeographic reconstruction and origin of the Philippine Sea, Tectonophysics, 102, 53– 84, 1984.
Smith, W. H. F., and D. T. Sandwell, Global seafloor topography from satellite altimetry and ship depth soundings, Science, 277, 1956– 1962, 1997.
Sibuet, J.-C., S.-K. Hsu, X. Le Pichon, J.-P. Le Formal, D. Reed, G. Moore, and C.-S. Liu, East Asia plate tectonics since 15 Ma: Constraints from the Taiwan region, Tectonophysics, 344, 103– 134, 2002.

指導教授

許樹坤(Shu-Kun Hsu)

審核日期

2008-7-16

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