Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Đặc điểm địa chất của các đới biến chất siêu cao áp kiểu đại dương và những ý nghĩa kiến tạo: Nghiên cứu trường hợp từ Tây Nam Thiên Sơn và Bắc Côn Đảo ở phía Tây Bắc Trung Quốc
Tóm tắt
Bài báo này tổng hợp các đặc điểm địa chất của các đới biến chất siêu cao áp (UHP) hình thành từ sự hụt nén sâu của vỏ đại dương. Đới biến chất UHP kiểu đại dương được đặc trưng bởi thành phần protolith là vỏ đại dương điển hình, nhiệt độ biến chất cao nhất <600°, quỹ đạo P-T trải qua trạng thái biến chất blueschist trong quá trình tiến triển và thoái trào của quá trình biến chất, tương ứng, với gradient địa nhiệt thấp của sự hụt nén lạnh. Nghiên cứu sâu hơn về đới biến chất UHP kiểu đại dương là rất cần thiết để xây dựng chuỗi phản ứng biến chất của vùng hụt nén lạnh, để hiểu cách mà các chất lỏng chứa nước được vận chuyển vào sâu trong manti và để phân loại các loại biến chất UHP trong vùng hụt nén lạnh. Cơ chế nâng cao và khai thác các đá biến chất UHP kiểu đại dương là một trong những vấn đề thách thức nhất trong nghiên cứu biến chất UHP, điều này rất quan trọng cho việc hiểu cơ chế địa động lực của Trái Đất rắn. Như một người du hành bị hụt nén vào độ sâu manti và sau đó được nâng lên bề mặt, các đới biến chất UHP kiểu đại dương chứng kiến quá trình từ hụt nén đến khai thác và là mục tiêu lý tưởng để nghiên cứu hành vi địa hóa và chu trình của các nguyên tố trong các vùng hụt nén. Sự phát triển kiến tạo của một vành đai orogen hội tụ thường được chia thành hai giai đoạn: hụt nén đại dương và theo sau là sự hụt nén và va chạm lục địa, và hai ví dụ tiêu biểu nhất của các vành đai orogen là Alpes và Himalaya. Do đó, nghiên cứu về đới biến chất UHP kiểu đại dương là biên giới của lý thuyết kiến tạo mảng hiện tại.
Từ khóa
Tài liệu tham khảo
Ernst W G. Tectonic history of subduction zones inferred from retrograde blueschist P-T paths. Geology, 1988, 16: 1081–1084
Maruyama S, Liou J G, Terabayashi M. Blueschists and eclogites of the world and their exhumation. Int Geol Rev, 1996, 38: 485–594
Song S, Zhang L, Niu Y, et al. Evolution from oceanic subduction to continental collision: A case study of the Northern Tibetan Plateau inferred from geochemical and geochronological data. J Petrol, 2006, 47: 435–455
Chopin C. Coesite and pure pyrope in high grade pelitic blueschists of the Western Alps: A first record and some consequences. Contrib Petrol Mineral, 1984, 86: 107–118
Reinecke T. Very-high-pressure metamorphism and uplift of coesite-bearing metasediments from the Zermatt-Saas zone, Western Alps. Eur J Mineral, 1991, 3: 7–17
Zhang L F, David J E, Jiang W B. Ultrahigh pressure metamorphism in western Tianshan Mts., China, part I: evidences from the inclusion of coesite pseudomorphs in garnet and quartz exsolution lamellae in omphacite in eclogites. Am Mineral, 2002, 87: 853–860
Zhang L F, David J Ellis, Samantha Williams, Wenbo Jiang. Ultrahigh pressure metamorphism in western Tianshan Mts., China, part II: evidence from magnesite in eclogite. Am Mineral, 2002, 87: 861–866
Zhang L F, David J E, Richard J A, et al. Ultradeep subduction of carbonates to the mantle: evidence from the carbonate reaction of magnesite + calcite (aragonite) = dolomite in metapelites from western Tianshan Mts., China. J Metamorph Geol, 2003, 21: 523–529
Zhang L F, Song S G, Ai Y L, et al. Relict coesite exsolution in omphacite from western Tianshan Mts. eclogites, China. Am Mineral, 2005, 89: 180–186
Li X P, Rahn M, Bucher K. Serpentinites of the Zermatt-Saas ophiolite complex and their texture evolution. J Metamorph Geol, 2004, 22: 159–177
Li X P, Zhang L F, Ai Y L. Discovery and geological implication of rodingites derived from eclogites of ophiolites at Changawuzi, western Tianshan Mts., China. Prog Nat Sci, 2003, 13: 901–907
Li X P, Zhang L F, Wei C J, et al. Petrology of rodingites derived from eclogites in the western Tianshan Mts., China. J Metamorph Geol, 2007, 25: 363–382
Zhang G B, Song S G, Zhang L F, et al. Discovery of ophiolite-type mantle peridotite from Shaliuhe, North Qaidam UHPM belt, NW China and its tectonic implications (in Chinese with English abstract). Acta Petrol Sin, 2005, 21: 1049–1058
Bucher K, Fazis Y, Capitani C, et al. Blueschists, eclogites, and decompression assemblages of the Zermatt-Saas ophiolite: High-pressure metamorphism of subducted Tethys lithosphere. Am Mineral, 2005, 90: 821–835
Yang J J, Zhu H, Deng J F. Discovery of peridotite in North Qaidam basin and its geological singnificance (in Chinese with English abstract). Acta Petrol Mineral, 1994, 13: 97–104
Zhang L F, Ai Y L, Song S, et al. Triassic collision of Western Tianshan Mts. orogenic belt, China: Evidences from SHRIMP U-Pb dating of zircon from eclogitic rocks. Lithos, 2007, 96: 266–280
Ai Y L, Zhang L F, Li X P, et al. Geochemical characteristics of HP-UHP eclogites and blueschists, and tectonic implications in southwestern Tianshan Mts., China. Prog Nat Sci, 2006, 16: 624–632
Song S, Yang J, Xu Z, et al. Metamorphic evolution of the coesite-bearing ultrahigh-pressure terrane in the north Qaidam, northern Tibet, NW China. J Metamorph Geol, 2003, 21: 631–644
LÜ Z, Zhang L F, Du J X, et al. Coesite inclusions in garnet from eclogitic rocks in western Tianshan Mts., NW China. Abstrct of International Eclogite Field Symposium, England, 2007. 137–138
Li S, Li Q, Hou Z, et al. The cooling history and exhumation of UHP metamorphic eclogite in Dabie Mountains (in Chinese with English abstract). Acta Petrol Sin, 2005, 21: 1117–1124
Zhang L F, Lü Z, Li X P, et al. A comparative study on the UHP metamorphic ophiolitc rocks in Zermatt-Saas zone, western Alps and western Tianshan Mts., China. Geol J Chin Univ, 2007, 3: 498–506
Zhang L F, Gao J, Ekerbair S, et al. Low temperature eclogite facies metamorphism in Western Tianshan Mts., Xinjiang. Sci China Ser D-Earth Sci, 2001, 44(1): 85–96
Zhang L F. Extreme metamorphism: the frontier of metamorphic geology. Earth Sci Front, 2007, 14: 33–42
Reinecke T. Prograde high-to ultrhigh-pressure metamorphism and exhumation of oceanic sediments at Lago di Cignana, Zermatt-Saas Zone, western Alps. Lithos, 1998, 42: 147–189
Zhang G, Song S, Zhang L, et al. The subducted oceanic crust within continental-type UHP metamorphic belt in the North Qaidam, NW China: evidence from petrology, geochemistry and geochronology. Lithos, doi: 10.1016/j.lithos.2008.12.001
Zhang L F. The study of UHP metamorphic ophiolitic rocks and its geological significance (in Chinese with English abstract). Geol Bull Chin, 2007, 26: 1079–1085
Peacock S M, Wang K. Seismic consequences of warm versus cool subduction metamorphism: Examples from southwest and northeast Japan. Science, 1999, 286: 937–939
Kirby S. Taking the temperature of slabs. Nature, 2000, 403: 31–34
Poli S, Schmidt M. Petrology of subducted slabs. Annu Rev Earth Planet Sci, 2002, 30: 207–235
Schreyer W. Ultradeep metamorphic rocks, the retrospective view-point. J Geophys Res, 1995, 100: 8353–8366
Wunder B. Equilibrium experiments in the system MgO-SiO2-H2O(MSH): stability fields of clinohumite-OH, chondrodite-OH and phase A. Contrib Mineral Petrol, 1998, 132: 111–120
Davies J H, von Blanckenburg F. Slab breakoff, a model of lithosphere detachment and its test in the magmatism and deformation of collisional orogens. Earth Planet Sci Lett, 1995, 129: 85–102
Ernst W G. Subduction, ultrahigh-pressure metamorphism, and regurgitation of buoyant crustal slices-implications for arcs and continental growth. Phys Earth Planet Int, 2001, 127: 253–275
Liu Y C, Li S G, Xu S T. Zircon SHRIMP U-Pb dating for gneiss in northern Dabie high T/P metamorphic zone, central China: Implication for decoupling within subducted continental crust. Lithos, 2007, 96: 170–185
Platt J P. Dynamics of orogenic wedges and the uplift of high pressure metamorphic rocks. Bull Geol Soc Am, 1986, 97: 1037–1053
Cloos M. Blueschist in the Franciscan Complex of California: petrotectonic constraints on uplift mechanism Evans, Brown. Blueschist and Eclogites. Geol Soc Am Mem, 1986, 164: 77–94
Hall P S, Kincaid C. Diapiric flow at subduction zones: A recipe for rapid transport: Science, 2001, 292: 2472–2475
Hermann J, Muntener O, Scambelluri M. The importance of serpentinite mylonites for subduction and exhumation of oceanic crust. Tectonophysics, 2000, 327: 225–238
Klauw G, Reinecke T. Exhumation of ultrahigh-pressure metamorphic oceanic crust from Lago di Cignana, Piemontese zone, western Alps: the structural record in metabasites. Lithos, 1997, 41: 79–102
Gill J B. Orogenic Andesites and Plate Tectonics. Berlin: Speringer, 1981. 1–390
Tatsumi Y. Formation of the volcanic front in subduction zones, Geophys Res Lett, 1986, 13: 717–720
Forneris T, Holloway J. Phase equilibria in subductiong basaltic crust: implications for H2O release from the slab. EPSL, 2003, 214: 187–201
Bebout G. Metamorphic chemical geodynamics of subduction zone. EPSL, 2007, 260: 373–393
Chemenda A, Mattauer M, Bokun A. Continental subduction and a mechanism for exhumation of high-pressure metamorphic rocks: new modelling and field data from Oman. Earth Planet Sci Lett, 1996, 43: 73–182
Dal Piaz G V, Bistacchi A, Massironi M. Geological outline of the Alps. Episodes, 2003, 26: 175–180
Rubatto D, Gebauer D, Fanning M. Jurassic formation and Eocene subduction of the Zermatt-Saas-Fee ophiolites: implications for the geodynamic evolution of the Central and Western Alps. Contrib Mineral Petrol, 1998, 132: 269–287
Rubatto D, Hermann J. Exhumation as fast as subduction? Geology, 2001, 29: 3–6
Rosenbaum G, Lister G. The Western Alps from the Jurassic to Oligocene: spatio-temporal constraints and evolutionary reconstructions. Earth Sci Rev, 2005, 69: 281–306
O’Brien P. Subduction followed by collision: Alpine and Himalayan examples. Phys Earth Planet Int, 2001, 127: 277–291
Kaneko Y, Katayama I, Yamamoto H, et al. Timing of Himalayan ultrahigh-pressure metamorphism: sinking rate and subduction angle of the Indian continental crust beneath Asia. J Metamorph Geol, 2003, 21: 89–599
Yang J G, Zhang J X, Meng F C, et al. The UHP metamorphic eclogites in North Qaidam and Altyn Tagh and their protolith study (in Chinese with English abstract). Earth Sci Front, 2003, 10: 291–313
Jahn B-M, Rumble D, Liou J G. Geochemistry and isotope tracer study of UHP metamorphic rocks. In: Carswell, Compagnoni, eds. Ultrahigh Pressure Metamorphism. Budapest: Eotvos University Press, 2003. 365–414
Klemd R. Ultrahigh-pressure metamorphism in eclogites from the western Tianshan Mts., China: Comments. Am Mineral, 2003, 88: 1153–1156
LÜ Z, Zhang L F, Du J F, et al. Coesite inclusions in garnet from eclogitic rocks in western Tianshan Mts., NW China. Abstrct of International Eclogite Field Symposium, England, 2007. 137–138
Li Q, Zhang L F. The P-T path and geological significance of low-pressure granulite-facies metamorphism in Muzhaerte, Southwest Tianshan Mts. Acta Petrol Sin, 2004, 20: 583–594
Gao J, Klemd R, Zhang L F, et al. P-T path of high-pressure metamorphic rocks and its tectonic implication in western Tianshan Mts., northwest China. J Metamorph Geol, 1999, 17: 621–636
Zhang L F, Ai Y L, Li Q, et al. The formation and tectonic evolution of UHP metamorphic belt in Southwestern Tianshan Mts., Xinjiang (in Chinese with English abstract). Acta Petrol Sin, 2005, 21: 1029–1038
LÜ Z, Zhang L F, Qu J F, et al. The petrological study and its metamorphic PT path of eclogites from Harbutengsu, western Tianshan Mts., China (in Chinese with English abstract). Acta Petrol Sin, 2007, 23:1617–1626
Gao J, Klemd R. Primary fluids entrapped at blueschist to eclogite transition: evidence from the Tianshan Mts. meta-subduction complex in northwestern China, Contrib Miner Petrol, 2001, 142: 1–14
Chen D L, Sun Y, Liu L. The metamorphic evolution of Yuka eclogite, Northern Qaidam, evidence from the compositional zone of garnet and reaction texture (in Chinese with English abstract). Acta Petrol Sin, 2005, 21: 1039–1048
Gao J, Zhang L F, Liu W. The Ar40/Ar39 age record of formation and uplift of the blueschists and eclogi tes in the western Tianshan Mountains. Chin Sci Bull, 2000, 45: 1047–1052
Xiao W J, Han C M, Yuan C, et al. The special tectonic evolution and metallogenesis in Carbonifours-Permian in Northern Xinjiang, China (in Chinese with English abstract). Acta Petrol Sin, 2006, 22: 1062–1076
Li X P, Zhang L F, Wei C J, et al. Petrology of rodingites derived from eclogites in the western Tianshan Mts., China. J Metamorph Geol, 2007, 25: 363–382
Yang J, Xu Z, Zhang J, et al. Early Palaeozoic North Qaidam UHP metamorphic belt on the north-eastern Tibetan Plateau and a paired subduction model. Terra Nova, 2002, 14: 397–404
Song S G, Zhang L F, Niu Y, et al. Geochronology of diamond-bearing zircons from garnet peridotite in the North Qaidam UHPM belt, Northern Tibetan Plateau: A record of complex histories from oceanic lithosphere subduction to continental collision. Earth Planet Sci Lett, 2005, 234: 99–118
Liu L, Sun Y, Luo J H, et al. Ultra-high pressure metamorphism of granitic gneiss in Yinggelisayi area, Altun Mountains, NW China. Sci China Ser D-Earth Sci, 2004, 47(4): 338–346
Liu L, Chen D L, Zhang A D, et al. Ultra-high pressure (>7 GPa) gneissic K-feldspar (-bearing) garnet clinopyroxenite in the Altun Tagh, NW China: Evidence from clinopyroxene exsolution in garnet. Sci China Ser D-Earth Sci, 2005, 48(7): 1000–1010
Zhang J X, Yang J S, Xu Z Q. Evidence for UHP metamorphism of eclogites from the Altun Mountains. Chin Sci Bull, 2002, 47(9): 751–755
Liu L, Zhang J, Green II H, et al. Evidence of former stishovite in metamorphosed sediments, implying subduction to >350 km. Earth Planet Sci Lett, 2007, 263: 180–191
Zhang J X, Meng F C, Mattinson C G. The recent progress of HP/UHP metamorphic belt in Southern Altyn Tagh and Northern Qaidam, NW China (in Chinese with English abstract). Geol J Chin Univ, 2007, 3: 526–545
Zhang J X, Yang J S, Mattinson C G, et al. Two contrasting eclogite cooling histories, North Qaidam HP/UHP terrane, western China: petrological and isotopic constraints. Lithos, 2005, 84: 51–76
Zhang G. The petrologic study and tectonic implication of the eclogite and mantle peridotite in Shaliuhe Terrane, North Qaidam UHPM belt, NW China (in Chinese with English abstract). Dissertation for the Doctoral Degree. Beijing: Peking Universiy, 2007. 1–97
Zhang J X, Meng F C, Yu S, et al. The metamorphic evolution of high pressure granulite from Lvliangshan, North Qaidam: evidences from petrological study and SHRIMP dating (in Chinese with English abstract). Earth Sci Front, 2007, 14: 85–97
Mattinson C G, Wooden J L, Liou J G, et al. Age and Duration of Eclogite-facies Metamorphism, North Qaidam HP/UHP Terrane, Western China. Am J Sci, 2006, 306: 683–711
Chen D L, Sun Y, Liu L. The metamorphic ages of the country rock of Yukahe eclogites in the North Qaidam and its geological singnificance (in Chinese with English abstract). Earth Sci Front, 2007, 14: 108–116