Chemical weathering; Climate change; Carbon cycle; Glacial-interglacial; South China Sea; Tropical continental shelf
Abstract :
[en] Atmospheric CO2 and global climate are closely coupled. Since 800 ka CO2 concentrations have been up to 50% higher during interglacial compared to glacial periods. Because of its dependence on temperature, humidity, and erosion rates, chemical weathering of exposed silicate minerals was suggested to have dampened these cyclic variations of atmospheric composition. Cooler and drier conditions and lower non-glacial erosion rates suppressed in situ chemical weathering rates during glacial periods. However, using systematic variations in major element geochemistry, Sr-Nd isotopes and clay mineral records from Ocean Drilling Program Sites 1143 and 1144 in the South China Sea spanning the last 1.1 Ma, we show that sediment deposited during glacial periods was more weathered than sediment delivered during interglacials. We attribute this to subaerial exposure and weathering of unconsolidated shelf sediments during glacial sealevel lowstands. Our estimates suggest that enhanced silicate weathering of tropical shelf sediments exposed during glacial lowstands can account for ~9% of the carbon dioxide removed from the atmosphere during the glacial and thus represent a significant part of the observed glacial-interglacial variation of ~80 ppmv. As a result, if similar magnitudes can be identified in other tropical shelf-slope systems, the effects of increased sediment exposure and subsequent silicate weathering during lowstands could have potentially enhanced the drawdown of atmospheric CO2 during cold stages of the Quaternary. This in turn would have caused an intensification of glacial cycles.
We attribute this to subaerial exposure and weathering of unconsolidated shelf
sediments during glacial sealevel lowstands. Our estimates suggest that enhanced
silicate weathering of tropical shelf sediments exposed during glacial lowstands can
account for ~9% of the carbon dioxide removed from the atmosphere during the glacial
and thus represent a significant part of the observed glacial-interglacial variation of ~80
ppmv. As a result, if similar magnitudes can be identified in other tropical shelf-slope
systems, the effects of increased sediment exposure and subsequent silicate weathering
during lowstands could have potentially enhanced the drawdown of atmospheric CO2 during cold stages of the Quaternary. This in turn would have caused an intensification
of glacial cycles.
Research center :
SPHERES - ULiège
Disciplines :
Earth sciences & physical geography
Author, co-author :
Wan, Shiming
Clift, Peter D.
Zhao, Debo
Hovius, Niels
Munhoven, Guy ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Adams, J., Weathering and glacial cycles. Nature, 373, 1995, 110.
Adkins, J.F., McIntyre, K., Schrag, D.P., The salinity, temperature, and delta O-18 of the glacial deep ocean. Science 298 (2002), 1769–1773.
Bayon, G., German, C.R., Boella, R.M., Milton, J.A., Taylor, R.N., Nesbitt, R.W., An improved method for extracting marine sediment fractions and its application to Sr and Nd isotopic analysis. Chem. Geol. 187 (2002), 179–199.
Bayon, G., Dennielou, B., Etoubleau, J., Ponzevera, E., Toucanne, S., Bermell, S., Intensifying weathering and land use in iron age central Africa. Science 335 (2012), 1219–1222.
Berger, W.H., Increase of carbon dioxide in the atmosphere during deglaciation: the coral reef hypothesis. Naturwissenschaften 69 (1982), 87–88.
Berner, R.A., Kothavala, Z., GEOCARB III: a revised model of atmospheric CO2 over phanerozoic time. Am. J. Sci. 301 (2001), 182–204.
Biscaye, P.E., Mineralogy and sedimentation of recent deep-sea clay in the Atlantic Ocean and adjacent seas and oceans. Geol. Soc. Am. Bull. 76 (1965), 803–832.
Bouabid, R., Nater, E.A., Bloom, P.R., Characterization of the weathering status of feldspar minerals in sandy soils of Minnesota using SEM and EDX. Geoderma 66 (1995), 137–149.
Bradtmiller, L.I., Anderson, R.F., Sachs, J.P., Fleisher, M.Q., A deeper respired carbon pool in the glacial equatorial Pacific Ocean. Earth Planet Sci. Lett. 299 (2010), 417–425.
Broecker, W.S., Glacial to interglacial changes in ocean chemistry. Prog. Oceanogr. 11 (1982), 151–197.
Buggle, B., Glaser, B., Hambach, U., Gerasimenka, N., Markovic, S., An evaluation of geochemical weathering indices in loessepaleosol studies. Quatern. Int., 2011, 10.1016/j.quaint.2010.1007.1019.
Burton, K.W., Gannoun, A., Parkinson, I.J., Climate driven glacial–interglacial variations in the osmium isotope composition of seawater recorded by planktic foraminifera. Earth Planet Sci. Lett. 295 (2010), 58–68.
Calmels, D., Galy, A., Hovius, N., Bickle, M., West, A.J., Chen, M.C., Chapman, H., Contribution of deep groundwater to the weathering budget in a rapidly eroding mountain belt, Taiwan. Earth Planet Sci. Lett. 303 (2011), 48–58.
Catalan, J., Pla-Rabes, S., Garcia, J., Camarero, L., Air temperature-driven CO2 consumption by rock weathering at short timescales: evidence from a Holocene lake sediment record. Geochim. Cosmochim. Acta 136 (2014), 67–79.
Chen, M.T., Shiau, L.J., Yu, P.S., Chiu, T.C., Chen, Y.G., Wei, K.Y., 500,000-Year records of carbonate, organic carbon, and foraminiferal sea-surface temperature from the southeastern South China Sea (near Palawan Island). Palaeogeogr. Palaeocl. 197 (2003), 113–131.
Chen, J., Li, G.J., Yang, J.D., Rao, W.B., Lu, H.Y., Balsam, W., Sun, Y.B., Ji, J.F., Nd and Sr isotopic characteristics of Chinese deserts Implications for the provenances of Asian dust. Geochim. Cosmochim. Acta 71 (2007), 3904–3914.
Clift, P.D., Sun, Z., The sedimentary and tectonic evolution of the Yinggehai-Song Hong Basin and the southern Hainan Margin, South China Sea: implication for Tibetan uplift and monsoon intensification. J. Geophys. Res., 111, 2006.
Clift, P.D., Lee, J.I., Clark, M.K., Blusztajn, J., Erosional response of South China to arc rifting and monsoonal strengthening: a record from the South China Sea. Mar. Geol. 184 (2002), 207–226.
Clift, P.D., Hodges, K.V., Heslop, D., Hannigan, R., Van Long, H., Calves, G., Correlation of Himalayan exhumation rates and Asian monsoon intensity. Nat. Geosci. 1 (2008), 875–880.
Clift, P.D., Wan, S.M., Blusztajn, J., Reconstructing chemical weathering, physical erosion and monsoon intensity since 25 Ma in the northern South China Sea: a review of competing proxies. Earth-Sci. Rev. 130 (2014), 86–102.
Colin, C., Turpin, L., Blamart, D., Frank, N., Kissel, C., Duchamp, S., Evolution of weathering patterns in the Indo-Burman Ranges over the last 280 kyr: effects of sediment provenance on Sr-87/Sr-86 ratios tracer. Geochem. Geophys. Geosyst., 7, 2006.
Colin, C., Siani, G., Sicre, M.A., Liu, Z., Impact of the East Asian monsoon rainfall changes on the erosion of the Mekong River basin over the past 25,000 yr. Mar. Geol. 271 (2010), 84–92.
Dadson, S., Hovius, N., Pegg, S., Dade, W.B., Horng, M.J., Chen, H., Hyperpycnal river flows from an active mountain belt. J. Geophys. Res.-Earth, 110, 2005.
Ehlert, C., Frank, M., Haley, B.A., Boniger, U., De Deckker, P., Gingele, F.X., Current transport versus continental inputs in the eastern Indian Ocean: radiogenic isotope signatures of clay size sediments. Geochem. Geophys. Geosyst., 12, 2011.
Esquevin, J., Influence de la composition chimique des illites sur le cristallinite. Bull. Centre Recherche Pau 3 (1969), 147–153.
Faure, H., Walter, R.C., Grant, D.R., The coastal oasis: ice age springs on emerged continental shelves. Global Planet. Change 33 (2002), 47–56.
Foster, G.L., Vance, D., Negligible glacial–interglacial variation in continental chemical weathering rates. Nature 444 (2006), 918–921.
France-Lanord, C., Derry, L.A., Organic carbon burial forcing of the carbon cycle from Himalayan erosion. Nature 390 (1997), 65–67.
Froelich, P.N., Blanc, V., Mortlock, R.A., Chillrud, S.N., Dunstan, W., Udomkit, A., Peng, T.-H., River fluxes of dissolved silica to the ocean were higher during glacials: Ge/Si in diatoms, rivers, and oceans. Paleoceanography 7 (1992), 739–767.
Gaillardet, J., Dupre, B., Allegre, C.J., Geochemistry of large river suspended sediments: silicate weathering or recycling tracer?. Geochim. Cosmochim. Acta 63 (1999), 4037–4051.
Gaillardet, J., Dupre, B., Louvat, P., Allegre, C.J., Global silicate weathering and CO2 consumption rates deduced from the chemistry of large rivers. Chem. Geol. 159 (1999), 3–30.
Garzanti, E., Padoan, M., Setti, M., Lopez-Galindo, A., Villa, I.M., Provenance versus weathering control on the composition of tropical river mud (southern Africa). Chem. Geol. 366 (2014), 61–74.
Georg, R.B., West, A.J., Vance, D., Newmand, K., Halliday, A.N., Is the marine osmium isotope record a probe for CO2 release from sedimentary rocks. Earth Planet Sci. Lett. 367 (2013), 28–38.
Gibbs, M., Kump, L.R., Global chemical erosion during the Last Glacial Maximum and the present: sensitivity to changes in lithology and hydrology. Paleoceanography 9 (1994), 529–543.
Gingele, F.X., Deckker, P.D., Hillenbrand, C.-D., Clay mineral distribution in surface sediments between Indonesia and NW Australia-source and transport by ocean currents. Mar. Geol. 179 (2001), 135–146.
Goldstein, S.L., O'Nions, R.K., Hamilton, P.J., A Sm–Nd isotopic study of atmospheric dusts and particulates from major river systems. Earth Planet Sci. Lett. 70 (1984), 221–236.
Goldstein, S.J., Jacobsen, S.B., Nd and Sr isotopic systematics of river water suspended material: implications for crustal evolution. Earth Planet Sci. Lett. 87 (1988), 249–265.
Goodbred, S.L., Response of the Ganges dispersal system to climate change: a source-to-sink view since the last interstade. Sediment Geol. 162 (2003), 83–104.
Guo, Z.T., Biscaye, P., Wei, L.Y., Chen, X.H., Peng, S.Z., Liu, T.S., Summer monsoon variations over the last 1.2 Ma from the weathering of loess-soil sequences in China. Geophys. Res. Lett. 27 (2000), 1751–1754.
Hall, R., Cenozoic geological and plate tectonic evolution of SE Asia and the SW Pacific: computer-based reconstructions, models and animations. J. Asian Earth Sci. 20 (2002), 353–431.
Hanebuth, T.J.J., Stattegger, K., Saito, Y., The stratigraphic architecture of the central Sunda Shelf (SE Asia) recorded by shallow-seismic surveying. Geo-Mar. Lett. 22 (2002), 86–94.
Hanebuth, T.J.J., Voris, H.K., Yokoyama, Y., Saito, Y., Okuno, J., Formation and fate of sedimentary depocentres on Southeast Asia's Sunda Shelf over the past sea-level cycle and biogeographic implications. Earth-Sci. Rev. 104 (2011), 92–110.
Hay, W.W., Pleistocene-Holocene Fluxes are Not the Earth's Norm. 1994, National Academy Press, Washington.
Hu, D.K., Boning, P., Kohler, C.M., Hillier, S., Pressling, N., Wan, S.M., Brumsack, H.J., Clift, P.D., Deep sea records of the continental weathering and erosion response to East Asian monsoon intensification since 14 ka in the South China Sea. Chem. Geol. 326 (2012), 1–18.
Hu, D.K., Clift, P.D., Boning, P., Hannigan, R., Hillier, S., Blusztajn, J., Wan, S.M., Fuller, D.Q., Holocene evolution in weathering and erosion patterns in the Pearl River delta. Geochem. Geophys. Geosyst. 14 (2013), 2349–2368.
Jaccard, S.L., Galbraith, E.D., Sigman, D.M., Haug, G.H., Francois, R., Pedersen, T.F., Dulski, P., Thierstein, H.R., Subarctic Pacific evidence for a glacial deepening of the oceanic respired carbon pool. Earth Planet Sci. Lett. 277 (2009), 156–165.
Jacobsen, S.B., Wasserburg, G.J., Sm–Nd isotopic evolution of chondrites. Earth Planet Sci. Lett. 50 (1980), 139–155.
Jones, M.T., Pearce, C.R., Oelkers, E.H., An experimental study of the interaction of basaltic riverine particulate material and seawater. Geochim. Cosmochim. Acta 77 (2012), 108–120.
King, S.L., Froelich, P.N., Jahnke, R.A., Early diagenesis of germanium in sediments of the Antarctic South Atlantic: in search of the missing Ge sink. Geochim. Cosmochim. Acta 64 (2000), 1375–1390.
Knittel, U., Defant, M.J., Raczek, I., Recent enrichment in the source region of Arc Magmas from Luzon Island, Philippines – Sr and Nd isotopic evidence. Geology 16 (1988), 73–76.
Kump L. R. and Alley R. B. (1994) Global chemical weathering on glacial time scales. In Material Fluxes on the Surface of the Earth (eds., T. M. Usselman and W. W. Hay). Natl. Res. Counc., Natl. Acad. Press, Washington, D.C. pp. 46–60.
Kump, L.R., Brantley, S.L., Arthur, M.A., Chemical weathering, atmospheric CO2, and climate. Annu. Rev. Earth Plant Sci. 28 (2000), 611–667.
Kurtz, A.D., Derry, L.A., Dust-driven glacial/interglacial variations in marine dissolved silica fluxes: evidence from Ge/Si. EOS Trans. AGU, 79, 1998, F426.
Li, L., Wang, H., Luo, B., He, J., The characterizations and paleoceanographic significance of organic and inorganic carbon in northern South China Sea during past 40 ka. Marine Geol. Q. Geol. 28 (2008), 79–85.
Limmer, D.R., Boning, P., Giosan, L., Ponton, C., Kohler, C.M., Cooper, M.J., Tabrez, A.R., Clift, P.D., Geochemical record of Holocene to recent sedimentation on the Western Indus continental shelf, Arabian Sea. Geochem. Geophys. Geosyst., 13, 2012.
Lisiecki, L.E., Raymo, M.E., A pliocene-pleistocene stack of 57 globally distributed benthic δ18O records. Paleoceanography, 20, 2005.
Liu, Z.F., Trentesaux, A., Clemens, S.C., Colin, C., Wang, P.X., Huang, B.Q., Boulay, S., Clay mineral assemblages in the northern South China Sea: implications for East Asian monsoon evolution over the past 2 million years. Mar. Geol. 201 (2003), 133–146.
Liu, Z.F., Colin, C., Trentesaux, A., Blamart, D., Bassinot, F., Siani, G., Sicre, M.A., Erosional history of the eastern Tibetan Plateau since 190 kyr ago: clay mineralogical and geochemical investigations from the southwestern South China Sea. Mar. Geol. 209 (2004), 1–18.
Liu, Z.F., Colin, C., Trentesaux, A., Siani, G., Frank, N., Blamart, D., Farid, S., Late quaternary climatic control on erosion and weathering in the eastern Tibetan Plateau and the Mekong Basin. Q. Res. 63 (2005), 316–328.
Liu, Z.F., Colin, C., Huang, W., Le, K.P., Tong, S., Chen, Z., Trentesaux, A., Climatic and tectonic controls on weathering in south China and Indochina Peninsula: clay mineralogical and geochemical investigations from the Pearl, Red, and Mekong drainage basins. Geochem. Geophys. Geosyst., 8, 2007, Q05005 05010.01029/02006GC001490.
Liu, J.P., Xue, Z., Ross, K., Wang, H.J., Yang, Z.S., Li, A.C., Gao, S., Fate of sediments delivered to the sea by Asian large rivers: long-distance transport and formation of remote alongshore clinothems. Sediment. Rec. 7 (2009), 4–9.
Liu, Z.F., Zhao, Y., Colin, C., Siringan, F.P., Wu, Q., Chemical weathering in Luzon, Philippines from clay mineralogy and major-element geochemistry of river sediments. Appl. Geochem. 24 (2009), 2195–2205.
Liu, J.G., Chen, M.H., Chen, Z., Yan, W., Clay mineral distribution in surface sediments of the South China Sea and its significance for in sediment sources and transport. Chin. J. Oceanol. Limnol. 28 (2010), 407–415.
Liu, Z.F., Colin, C., Li, X.J., Zhao, Y.L., Tuo, S.T., Chen, Z., Siringan, F.P., Liu, J.T., Huang, C.Y., You, C.F., Huang, K.F., Clay mineral distribution in surface sediments of the northeastern South China Sea and surrounding fluvial drainage basins: source and transport. Mar. Geol. 277 (2010), 48–60.
Liu, Z.F., Wang, H., Hantoro, W.S., Sathiamurthy, E., Colin, C., Zhao, Y.L., Li, J.R., Climatic and tectonic controls on chemical weathering in tropical Southeast Asia (Malay Peninsula, Borneo, and Sumatra). Chem. Geol. 291 (2012), 1–12.
Liu, Y., Gao, S., Wang, Y., Yang, Y., Long, J., Zhang, Y., Wu, X., Distal mud deposits associated with the Pearl River over the northwestern continental shelf of the South China Sea. Mar. Geol. 347 (2014), 43–57.
Liu, Z.F., Zhao, Y., Colin, C., Stattegger, K., Wiesner, M.G., Huh, C., Zhang, Y., Li, X., Sompongchaiyakul, P., You, C., Huang, C., Liu, J.T., Siringan, F.P., Le, K.P., Sathiamurthy, E., Hantoro, W.S., Liu, J.G., Tuo, S., Zhao, S., Zhou, S., He, Z., Wang, Y., Bunsomboonsakul, S., Li, Y., Source-to-sink transport processes of fluvial sediments in the South China Sea. Earth-Sci. Rev. 153 (2016), 238–273.
Ludwig, W., Amiotte Suchet, P., Probst, J.-L., Enhanced chemical weathering of rocks during the last glacial maximum: a sink for atmospheric CO2?. Chem. Geol. 159 (1999), 147–161.
Lupker, M., France-Lanord, C., Galy, V., Lave, J., Kudrass, H., Increasing chemical weathering in the Himalayan system since the Last Glacial Maximum. Earth Planet Sci. Lett. 365 (2013), 243–252.
Luthi, D., Le Floch, M., Bereiter, B., Blunier, T., Barnola, J.M., Siegenthaler, U., Raynaud, D., Jouzel, J., Fischer, H., Kawamura, K., Stocker, T.F., High-resolution carbon dioxide concentration record 650,000–800,000 years before present. Nature 453 (2008), 379–382.
Martin, C.E.A., Galy, A., Hovius, N., Bickle, M., Lin, I.T., Horng, M.J., Calmels, D., Chen, H.E., The sources and fluxes of dissolved chemistry in a semi-confined, sandy coastal aquifer: the Pingtung Plain, Taiwan. Appl. Geochem. 33 (2013), 222–236.
Milliman, J.D., Meade, R.H., World wide delivery of river sediment to the oceans. J. Geol. 91 (1983), 1–21.
Milliman, J.D., Farnsworth, K.L., River Discharge to the Coastal Ocean: A Global Synthesis. 2011, Cambridge Univ. Press.
Molengraaff, G.A.F., Weber, M., On the relation between the Pleistocene glacial period and the origin of the Sunda Sea (Java and South China-Sea), and its influence on the distribution of coral reefs and on the land- and freshwater fauna. Proc. R. Acad. 23 (1920), 394–428.
Munhoven, G., Glacial–interglacial changes of continental weathering: estimates of the related CO2 and HCO3− flux variations and their uncertainties. Global Planet. Change 33 (2002), 155–176.
Munhoven, G., Glacial–interglacial rain ratio changes: Implications for atmospheric CO2 and ocean–sediment interaction. Deep-Sea Res. II 54:5–7 (2007), 722–746.
Munhoven, G., Franҫois, L.M., Glacial–interglacial variability of atmospheric CO2 due to changing continental silicate rock weathering: a model study. J. Geophys. Res. 101 (1996), 21423–21437.
Nesbitt, H.W., Markovics, G., Price, R.C., Chemical processes affecting alkalis and alkaline-earths during continental weathering. Geochim. Cosmochim. Acta 44 (1980), 1659–1666.
Nesbitt, H.W., Young, G.M., Early proterozoic climate and plate motions inferred from major element chemistry of lutites. Nature 299 (1982), 715–717.
Ng, S.W.P., Chung, S.L., Robb, L.J., Searle, M.P., Ghani, A.A., Whitehouse, M.J., Oliver, G.J.H., Sone, M., Gardiner, N.J., Roselee, M.H., Petrogenesis of Malaysian granitoids in the Southeast Asian tin belt: Part 1. Geochemical and Sr–Nd isotopic characteristics. Geol. Soc. Am. Bull. 127 (2015), 1209–1237.
Nittrouer, C.A., Kuehl, S.A., Figueiredo, A.G., Allison, M.A., Sommerfield, C.K., Rine, J.M., Faria, L.E.C., Silveira, O.M., The geological record preserved by Amazon shelf sedimentation. Cont. Shelf Res. 16 (1996), 817–841.
Opdyke, B.N., Walker, J.C.G., Return of the coral reef hypothesis: basin to shelf partitioning of CaCO3 and its effect on atmospheric pCO2. Geology 20 (1992), 733–736.
Oxburgh, R., Variations in the osmium isotope composition of sea water over the past 200,000 years. Earth Planet Sci. Lett. 159 (1998), 183–191.
Petit, J.R., Jouzel, J., Raynaud, D., Barkov, N.I., Barnola, J.M., Basile, I., Bender, M., Chappellaz, J., Davis, M., Delaygue, G., Delmotte, M., Kotlyakov, V.M., Legrand, M., Lipenkov, V.Y., Lorius, C., Pepin, L., Ritz, C., Saltzman, E., Stievenard, M., Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica. Nature 399 (1999), 429–436.
Pfaumann, U., Sarnthein, M., Chapman, M., d'Abreu, L., Funnell, B., Huels, M., Kiefer, T., Maslin, M., Schulz, H., Swallow, J., van Kreveld, S., Vautravers, M., Vogelsang, E., Weinelt, M., Glacial North Atlantic: sea surface conditions reconstructed by GLAMAP 2000. Paleoceanography, 18, 2003.
Post, V.E.A., Groen, J., Kooi, H., Person, M., Ge, S., Edmunds, W.M., Offshore fresh groundwater reserves as a global phenomenon. Nature 504 (2013), 71–78.
Raymo, M.E., Ruddiman, W.F., Tectonic forcing of late cenozoic climate. Nature 359 (1992), 117–122.
Rea, D.K., Janecek, T.R., Mass-accumulation rates of the nonauthigenic inorganic crystalline (eolian) component of deep-sea sediments form the western mid-Pacific mountains, Deep Sea Drilling Project Site 463. Init. Rep. Deep Sea Drilling Proj. 62 (1981), 653–659.
Read, G., Kemp, R., Rose, J., Development of a feldspar weathering index and its application to a buried soil chronosequence in southeastern England. Geoderma 74 (1996), 267–280.
Schimanski, A., Holocene Sedimentation on the Vietnamese Shelf: from Source to Sink. 2002, Kiel University, Kiel, 171.
Scholz, F., Hensen, C., Schmidt, M., Geersen, J., Submarine weathering of silicate minerals and the extent of pore water freshening at active continental margins. Geochim. Cosmochim. Acta 100 (2013), 200–216.
Siddall, M., Rohling, E.J., Almogi-Labin, A., Hemleben, C., Meischner, D., Schmelzer, I., Smeed, D.A., Sea-level fluctuations during the last glacial cycle. Nature 423 (2003), 853–858.
Sigman, D.M., Hain, M.P., Haug, G.H., The polar ocean and glacial cycles in atmospheric CO2 concentration. Nature 466 (2010), 47–55.
Steinke, S., Hanebuth, T.J., Vogt, C., Stattegger, K., Sea level induced variations in clay mineral composition in the southwestern South China Sea over the past 17,000 yr. Mar. Geol. 250 (2008), 199–210.
Summerfield, M.A., Hulton, N.J., Natural controls of fluvial denudation rates in major world drainage basins. J. Geophys. Res.-Sol. Ea. 99 (1994), 13871–13883.
Tian, J., Wang, P.X., Cheng, X.R., Li, Q.Y., Astronomically tuned plio-pleistocene benthic δ18O record from South China Sea and Atlantic-Pacific comparison. Earth Planet Sci. Lett. 203 (2002), 1015–1029.
Tjallingii, R., Stattegger, K., Wetzel, A., Phach, P., Infilling and flooding of the Mekong River incised valley during deglacial sea-level rise. Q. Sci. Rev. 29 (2010), 1432–1444.
Tjia, H.D., Liew, K.K., Changes in Tectonic Stress Field in Northern Sunda Shelf Basin. 1996, Geological Society Special Publication, London.
Tu, K., Flower, M.F.J., Carlson, R.W., Xie, G.H., Chen, C.Y., Zhang, M., Magmatism in the South China Basin. 1. Isotopic and trace-element evidence for an endogenous Dupal Mantle component. Chem. Geol. 97 (1992), 47–63.
Turner, S., Foden, J., U, Th and Ra disequilibria, Sr, Nd and Pb isotope and trace element variations in Sunda arc lavas predominance of a subducted sediment component. Contrib. Mineral. Petrol. 142 (2001), 43–57.
Ushie, H., Matsumoto, K., The role of shelf nutrients on glacial–interglacial CO2: a negative feedback. Global Biogeochem. Cycles, 26, 2012.
von Blanckenburg, F., Bouchez, J., Ibarra, D.E., Maher, K., Stable runoff and weathering fluxes into the oceans over Quaternary climate cycles. Nat. Geosci. 8 (2015), 538–542.
Wallmann, K., Is late Quaternary climate change governed by self-sustained oscillations in atmospheric CO2?. Geochim. Cosmochim. Acta 132 (2014), 413–439.
Wallmann, K., Aloisi, G., Haeckel, M., Tishchenko, P., Pavlova, G., Greinert, J., Kutterolf, S., Eisenhauer, A., Silicate weathering in anoxic marine sediments. Geochim. Cosmochim. Acta 72 (2008), 2895–2918.
Wan, S.M., Li, A.C., Clift, P.D., Jiang, H.Y., Development of the East Asian summer monsoon: Evidence from the sediment record in the South China Sea since 8.5 Ma. Palaeogeogr. Palaeocl. 241 (2006), 139–159.
Wan, S.M., Clift, P.D., Yu, Z.J., Li, A.C., Li, T.G., Tectonic and climatic controls on long-term silicate weathering in Asia since 5 Ma. Geophys. Res. Lett., 39, 2012, 10.1029/2012GL052377.
Wan, S.M., Li, A.C., Clift, P.D., Stutt, J.B., Development of the East Asian monsoon: mineralogical and sedimentologic records in the northern South China Sea since 20 Ma. Palaeogeogr. Palaeocl. 254 (2007), 561–582.
Wan, S.M., Li, A.C., Clift, P.D., Wu, S.G., Xu, K.H., Li, T.G., Increased contribution of terrigenous supply from Taiwan to the northern South China Sea since 3 Ma. Mar. Geol. 278 (2010), 115–121.
Wan, S.M., Tian, J., Steinke, S., Li, A.C., Li, T.G., Evolution and variability of the East Asian summer monsoon during the Pliocene: evidence from clay mineral records of the South China Sea. Palaeogeogr. Palaeocl. 293 (2010), 237–247.
Wan, S.M., Toucanne, S., Clift, P.D., Zhao, D.B., Bayon, G., Yu, Z.J., Cai, G.Q., Yin, X.B., Revillon, S., Wang, D.W., Li, A.C., Li, T.G., Human impact overwhelms long-term climate control of weathering and erosion in Southwest China. Geology 43 (2015), 439–442.
Wang, P.X., Sun, X.J., Last Glacial Maximum in China – Comparison between Land and Sea. Catena 23 (1994), 341–353.
Wang, P.X., Prell, W.L. and Blum, P. (2000) Proceedings of the Ocean Drilling Program. Initial Reports, 184. Texas A&M University, College Station.
Wang, Y.J., Cheng, H., Edwards, R.L., Kong, X.G., Shao, X.H., Chen, S.T., Wu, J.Y., Jiang, X.Y., Wang, X.F., An, Z.S., Millennial- and orbital-scale changes in the East Asian monsoon over the past 224,000 years. Nature 451 (2008), 1090–1093.
Wang, P.X., Li, Q.Y., Tian, J., Pleistocene paleoceanography of the South China Sea: progress over the past 20 years. Mar. Geol. 352 (2014), 381–396.
Wang, Y.X., Yang, J.D., Chen, J., Zhang, K.J., Rao, W.B., The Sr and Nd isotopic variations of the Chinese Loess Plateau during the past 7 Ma: implications for the East Asian winter monsoon and source areas of loess. Palaeogeogr. Palaeocl. 249 (2007), 351–361.
Wei, G.J., Deng, W.F., Liu, Y., Li, X.H., High-resolution sea surface temperature records derived from foraminiferal Mg/Ca ratios during the last 260 ka in the northern South China Sea. Palaeogeogr. Palaeocl. 250 (2007), 126–138.
Wei, G.J., Liu, Y., Ma, J.L., Xie, L., Chen, J., Deng, W., Tang, S., Nd, Sr isotopes and elemental geochemistry of surface sediments from the South China Sea implications for provenance tracing. Mar. Geol. 319–322 (2012), 21–34.
West, A.J., Thickness of the chemical weathering zone and implications for erosional and climatic drivers of weathering and for carbon-cycle feedbacks. Geology 40 (2012), 811–814.
West, A.J., Galy, A., Bickle, M., Tectonic and climatic controls on silicate weathering. Earth Planet Sci. Lett. 235 (2005), 211–228.
White, A.F., Blum, A.E., Effects of climate on chemical-weathering in watersheds. Geochim. Cosmochim. Acta 59 (1995), 1729–1747.
Wong, H.K., Lüdmann, T., Haft, C., Paulsen, A.M., Hübscher, C., Geng, J., Quaternary Sedimentation in the Molengraaf Paleo-Delta, Northern Sunda Shelf (southern South China Sea). 2012, SEPM, Oklahoma.
Xiong, Z.F., Li, T.G., Crosta, X., Alegeo, T., Chang, F., Zhai, B., Potential role of giant marine diatoms in sequestration of atmospheric CO2 during the Last Glacial Maximum: δ13C evidence from laminated Ethmodiscus rex mats in tropical West Pacific. Global Planet. Change 108 (2013), 1–14.
Yang, S.Y., Jiang, S.Y., Ling, H.F., Xia, X.P., Sun, M., Wang, D.J., Sr–Nd isotopic compositions of the Changjiang sediments: Implications for tracing sediment sources. Sci. China Ser. D 50 (2007), 1556–1565.
Yu, J., Broecker, W.S., Elderfield, H., Jin, Z., McManus, J., Zhang, F., Loss of carbon from the deep sea since the Last Glacial Maximum. Science 330 (2010), 1084–1087.