南海西南次海盆晚中新世钙质超微化石与古海洋演化
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摘要
本文对南海西南次海盆IODP U1433站上中新统远洋粘土中的钙质超微化石生物地层学与属种组合作了较为详细研究。结果显示研究层位底部年龄在10.40-9.75 Ma之间,属于NN9带,向上共识别出8个钙质超微化石生物地层事件。依据生物地层框架、钙质超微化石总丰度与属种百分含量,发现西南次海盆在8.3-8 Ma以前处于上层海水分层性好,表层海水生产力较低的阶段;大约在8 Ma以后,生产力大幅增加。结合前人U1433站位物源研究结果,以及南海东亚季风强度变化史,作者认为钙质超微化石显示的生产力变化,与越南中部高地的抬升,以及东亚夏季风增强有关。
We studied the Upper Miocene biostratigraphy and assemblages of calcareous nannofossils from the IODP Site U1433 located on the Southwest Subbasin,South China Sea,China.The bottom age of the sediment cores of this study is about 10.40-9.75 Ma,and 8 bioevents were identified upward.The abundances and assemblages of nannofossils imply that before 8.3-8 Ma the upper-column seawater of Southwest Subbasin was well stratified and the primary productivity was low.After 8 Ma,the productivity increased sharply.Comparing with former study of Site U1433 clay provenance,and the monsoon history in the South China Sea,the change of primary productivity might due to uplift of the Central Highland and strengthening of the summer monsoon.
We studied the Upper Miocene biostratigraphy and assemblages of calcareous nannofossils from the IODP Site U1433 located on the Southwest Subbasin,South China Sea,China.The bottom age of the sediment cores of this study is about 10.40-9.75 Ma,and 8 bioevents were identified upward.The abundances and assemblages of nannofossils imply that before 8.3-8 Ma the upper-column seawater of Southwest Subbasin was well stratified and the primary productivity was low.After 8 Ma,the productivity increased sharply.Comparing with former study of Site U1433 clay provenance,and the monsoon history in the South China Sea,the change of primary productivity might due to uplift of the Central Highland and strengthening of the summer monsoon.
引文
陈荣华,徐建,孟翊,汪东军,刘传联,黄宝琦,张富元,2003.南海东北部表层沉积中微体化石与碳酸盐溶跃面和补偿深度.海洋学报,25(2):48-56
张兰兰,陈木宏,陈忠,向荣,刘建国,2010.南海表层沉积物中的碳酸钙含量分布及其影响因素.地球科学,35(6):891-898
BALLEGGER A M,FLORES J A,SIERRO F J,ANDERSEN N,2012.Monitoring fluctuations of the Subtropical Front in the Tasman Sea between 3.45and 2.45Ma(ODP site 1172).Palaeogeography,Palaeoclimatology,Palaeoecology,313-314:215-224
BEAUFORT L,LANCELOT Y,CAMBERLIN Pet al.,1997.Insolation cycles as a major control of equatorial Indian Ocean primary production.Science,278:1451-1454
BOECKEL B,BAUMANN K H,HENRICH R,KINKEL H,2006.Coccolith distribution patterns in South Atlantic and Southern Ocean surface sediments in relation to environmental gradients.Deep Sea Research I,53:1073-1099
BORDIGA M,BARTOL M,HENDERIKS J,2015.Absolute nannofossil abundance estimates:Quantifying the pros and cons of different techniques.Revue de micropaéontologie,58:155-165
BROECKER W,CLARK E,2009.Ratio of coccolith CaCO3to foraminifera CaCO3in late Holocene deep sea sediments.Paleoceanography,24:PA3205
CARTER A,ROQUES D,BRISTOW C S,2000.Denudation history of onshore central Vietnam:constrains on the Cenozoic evolution of the western margin of the South China Sea.Tectonophysics,322:265-277
CHEN R,XU J,MENG Y,LIU C,HUANG B,ZHANG F,2003.Microorganisms and corbonatelysocline depth and CCD in surface sediment of the northeastern South China Sea.Acta Oceanologica Sinica,25(2):48-56
FLORES J A,SIERRO F J,RAFFI I,1995.Evolution of the calcareous nannofossil assemblage as reponse to the paleoceanography changes in the eastern equatorial Pacific Ocean from 4to 2Ma(Leg 138,Sites849and 852).In Leckie R Met al.(eds.),Proceedings of the Ocean Drilling Program.Scientific Results,165:163-176
FLORES JA,BRCENA M A,SIERRO F J,2000.Ocean-surface and wind dynamics in the Atlantic Ocean off Northwest Afica during the last 140 000years.Palaeogeography,Palaeoclimatology,Palaeoecology,161:459-478
FRENZ M,BAUMANN K H,BOECKEL Bet al.,2005.Quantification of foraminifer and coccolith carbonate in South Atlantic surface sediments by means of carbonate grain-size distributions.Journal of Sedimentary Research,75:464-475
GRADSTEIN F M,OGG J G,SCHMITZ M D,OGG G M(eds.),2012.The Geological Time Scale 2012.Oxford,UK(Elsevier)
KAMEO K,2002.Late Pliocene Caribbean surface water dynamics and climatic changes based on calcareous nannofossil records.Palaeogeography,Palaeoclimatology,Palaeo-ecology,179:211-226
KOCH C,YOUNG J R,2007.A simple weight and dilution technique for determining absolute abundances of coccoliths from sediment sample.Journal of Nannoplankton Research,29:67-69
LI B,JIAN Z,2004.South China Sea surface water evolution over the last 12 Myr:A southnorth comparison from Ocean Drilling Program Sites 1143and 1146.Paleoceanography,19:PA10091
LIU C,CLIFT P D,MURRRAY R Wet al.,2017.Geochemical evidence for initiation of the modern Mekong delta in the southwestern South China Sea after 8Ma.Chemical Geology,451:35-54
LI C F,LIN J,KULHANEK D Ket al.,2015.Site U1433.In:LIC F,LIN J,KULHANEK D K and THE EXPEDITION 349SCIENTISTS,Proceedings of the International Ocean Discovery Program,349
LI Q,LI B,ZONG Get al.,2006.Late Miocene development of the western Pacific warm pool:Planktonic foraminifer and oxygen isotopic evidence.Palaeogeography,Palaeoclimatology,Palaeoecology,237:465-482
MARTINI E,1971.Standard Tertiary and Quaternary calcareous nannoplankton zonation.In:FARINACCI A(ed.),Proceedings of the Second Planktonic Conference,Roma,2:739-785
MOLFINO B,MCINTYRE A,1990.Nutricline variation in the equatorial Atlantic coincident the Younger Dryas.Paleoceanography,5:997-1008
OKADA H,MCINTYRE A,1977.Modern coccolithophores of the Pacific and North Atlantic Oceans.Micropaleontology,23:1-55
WAN S,LI A,CLIFT P D,JIANG H,2006.Development of the East Asian summer monsoon:Evidence from the sediment record in the South China Sea since 8.5Ma.Palaeogeography,Palaeoclimatology,Palaeoecology,241:139-159
WANG P,LI Q,TIAN J,2014.Pleistocene paleoceanography of the South China Sea:Progress over the past 20years.Marine Geology,352:381-396
YOUNG J,1990.Size variation of Neogene Reticulofenestra coccoliths from Indian Ocean DSDP Cores.Journal of Micropalaeontology,9:71-86
ZHANG L,CHEN M,CHEN Z,XIANG R,LIU J,2010.Distribution of Calcium Carbonate and Its Controlling Factors in Surface Sediments of the South China Sea.Earth Scicence,35(6):891-898
ZIVERI P,BAUMANN K H,BOECKEL B et al.,2004.Biogeography of selected Holocene coccoliths in the Atlantic Ocean.In:THIER-STEIN H,YOUNG Y(eds.),Coccolithopores:from Molecular Process to Global Impact.Berlin:Springer.403-428
张兰兰,陈木宏,陈忠,向荣,刘建国,2010.南海表层沉积物中的碳酸钙含量分布及其影响因素.地球科学,35(6):891-898
BALLEGGER A M,FLORES J A,SIERRO F J,ANDERSEN N,2012.Monitoring fluctuations of the Subtropical Front in the Tasman Sea between 3.45and 2.45Ma(ODP site 1172).Palaeogeography,Palaeoclimatology,Palaeoecology,313-314:215-224
BEAUFORT L,LANCELOT Y,CAMBERLIN Pet al.,1997.Insolation cycles as a major control of equatorial Indian Ocean primary production.Science,278:1451-1454
BOECKEL B,BAUMANN K H,HENRICH R,KINKEL H,2006.Coccolith distribution patterns in South Atlantic and Southern Ocean surface sediments in relation to environmental gradients.Deep Sea Research I,53:1073-1099
BORDIGA M,BARTOL M,HENDERIKS J,2015.Absolute nannofossil abundance estimates:Quantifying the pros and cons of different techniques.Revue de micropaéontologie,58:155-165
BROECKER W,CLARK E,2009.Ratio of coccolith CaCO3to foraminifera CaCO3in late Holocene deep sea sediments.Paleoceanography,24:PA3205
CARTER A,ROQUES D,BRISTOW C S,2000.Denudation history of onshore central Vietnam:constrains on the Cenozoic evolution of the western margin of the South China Sea.Tectonophysics,322:265-277
CHEN R,XU J,MENG Y,LIU C,HUANG B,ZHANG F,2003.Microorganisms and corbonatelysocline depth and CCD in surface sediment of the northeastern South China Sea.Acta Oceanologica Sinica,25(2):48-56
FLORES J A,SIERRO F J,RAFFI I,1995.Evolution of the calcareous nannofossil assemblage as reponse to the paleoceanography changes in the eastern equatorial Pacific Ocean from 4to 2Ma(Leg 138,Sites849and 852).In Leckie R Met al.(eds.),Proceedings of the Ocean Drilling Program.Scientific Results,165:163-176
FLORES JA,BRCENA M A,SIERRO F J,2000.Ocean-surface and wind dynamics in the Atlantic Ocean off Northwest Afica during the last 140 000years.Palaeogeography,Palaeoclimatology,Palaeoecology,161:459-478
FRENZ M,BAUMANN K H,BOECKEL Bet al.,2005.Quantification of foraminifer and coccolith carbonate in South Atlantic surface sediments by means of carbonate grain-size distributions.Journal of Sedimentary Research,75:464-475
GRADSTEIN F M,OGG J G,SCHMITZ M D,OGG G M(eds.),2012.The Geological Time Scale 2012.Oxford,UK(Elsevier)
KAMEO K,2002.Late Pliocene Caribbean surface water dynamics and climatic changes based on calcareous nannofossil records.Palaeogeography,Palaeoclimatology,Palaeo-ecology,179:211-226
KOCH C,YOUNG J R,2007.A simple weight and dilution technique for determining absolute abundances of coccoliths from sediment sample.Journal of Nannoplankton Research,29:67-69
LI B,JIAN Z,2004.South China Sea surface water evolution over the last 12 Myr:A southnorth comparison from Ocean Drilling Program Sites 1143and 1146.Paleoceanography,19:PA10091
LIU C,CLIFT P D,MURRRAY R Wet al.,2017.Geochemical evidence for initiation of the modern Mekong delta in the southwestern South China Sea after 8Ma.Chemical Geology,451:35-54
LI C F,LIN J,KULHANEK D Ket al.,2015.Site U1433.In:LIC F,LIN J,KULHANEK D K and THE EXPEDITION 349SCIENTISTS,Proceedings of the International Ocean Discovery Program,349
LI Q,LI B,ZONG Get al.,2006.Late Miocene development of the western Pacific warm pool:Planktonic foraminifer and oxygen isotopic evidence.Palaeogeography,Palaeoclimatology,Palaeoecology,237:465-482
MARTINI E,1971.Standard Tertiary and Quaternary calcareous nannoplankton zonation.In:FARINACCI A(ed.),Proceedings of the Second Planktonic Conference,Roma,2:739-785
MOLFINO B,MCINTYRE A,1990.Nutricline variation in the equatorial Atlantic coincident the Younger Dryas.Paleoceanography,5:997-1008
OKADA H,MCINTYRE A,1977.Modern coccolithophores of the Pacific and North Atlantic Oceans.Micropaleontology,23:1-55
WAN S,LI A,CLIFT P D,JIANG H,2006.Development of the East Asian summer monsoon:Evidence from the sediment record in the South China Sea since 8.5Ma.Palaeogeography,Palaeoclimatology,Palaeoecology,241:139-159
WANG P,LI Q,TIAN J,2014.Pleistocene paleoceanography of the South China Sea:Progress over the past 20years.Marine Geology,352:381-396
YOUNG J,1990.Size variation of Neogene Reticulofenestra coccoliths from Indian Ocean DSDP Cores.Journal of Micropalaeontology,9:71-86
ZHANG L,CHEN M,CHEN Z,XIANG R,LIU J,2010.Distribution of Calcium Carbonate and Its Controlling Factors in Surface Sediments of the South China Sea.Earth Scicence,35(6):891-898
ZIVERI P,BAUMANN K H,BOECKEL B et al.,2004.Biogeography of selected Holocene coccoliths in the Atlantic Ocean.In:THIER-STEIN H,YOUNG Y(eds.),Coccolithopores:from Molecular Process to Global Impact.Berlin:Springer.403-428