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  • 1
    Call number: AWI G5-09-0015
    In: Developments in paleoenvironmental research, Vol. 13
    Description / Table of Contents: This book is the first synthesis of sedimentary geology and paleoceanography of the South China Sea on the basis of extensive industrial explorations and scientific expeditions culminated with the ODP Leg 184. It provides up-to-date knowledge about the history of this largest marginal sea in the West Pacific, deep-sea records of evolution and variations of the East Asian monsoon, and geological backgrounds of the off-shore petroleum basins. With its focus on paleoceanography and sedimentology, this volume provides a comprehensive all-round view of the marginal sea basin, from modern oceanography to sequence stratigraphy. The South China Sea: Paleoceanography and Sedimentology is essential reading for advanced students and researchers working in marine geology, basin evolution, sedimentology, paleoceanography and related fields.
    Type of Medium: Monograph available for loan
    Pages: X, 506 S. : Ill., graph. Darst., Kt.
    ISBN: 9781402097447
    Series Statement: Developments in paleoenvironmental research 13
    Language: English
    Note: Contents: 1 Introduction / Pinxian Wang and Qianyu Li. - References. - 2 Oceanographical and Geological Background / Pinxian Wang and Qianyu Li. - Introduction. - 2.1 Bathymetry and Geomorphology. - 2.2 Oceanography. - Monsoon. - Surface Circulation. - Surface Temperature and Salinity. - Thermocline and Upwelling. - Water Exchange with Pacific and Kuroshio Intrusion. - Deep Water Circulation. - Other Oceanographic Features. - Oceanographic Summary. - 2.3 Tectonic History and Sedimentary Basins. - Prior Terrains and Opening of the SCS. - Step-Wise Closure of the Sea Basin. - Formation of Shelf-Slope Sedimentary Basins. - Sediments of the SCS Shelf-Slope Basins: An Overview. - Summary of Tectonics and Basin Formation. - References. - 3 Stratigraphy and Sea Level Changes. - Introduction. - 3.1 Lithostratigraphic Overview / (Li Q. and Zhong G.). - Pre-Cenozoic Basement. - Lithostratigraphy of Syn-Rift Sediments. - Post-Rift Sediments in Shelf-Slope Basins. - Deep Water Lithostratigraphy. - 3.2 Biostratigraphic Framework / (Li Q.). - Floral and Shallow-Water Faunal Assemblages. - Planktonic Foraminiferal and Nannofossil Biostratigraphy. - Quaternary Lithobiostratigraphic Events. - 3.3 Isotopic and Astronomical Stratigraphy / (Tian J. and Li Q.). - Neogene Isotopic Records at Site 1148. - Pliocene–Pleistocene Isotopic Records at Site 1143. - 3.4 Stratigraphy of Major Shelf and Slope Basins / (Zhong G. and Li Q.). - Northern South China Sea Basins. - Southern South China Sea Basins. - 3.5 Regional Sea Level Changes / (Zhong G. and Li Q.). - Late Quaternary Sea Level Changes. - Long-Term Sea Level Changes Since the Oligocene. - New Approach Toward Fine-Scale Sea Level Magnitude. - Summary of South China Sea stratigraphy. - References. - 4 Sedimentology. - Introduction. - 4.1 Surface Deposition Patterns / (Liu Z.). - Deposit Distribution Patterns. - Sediment Transport. - 4.2 Terrigenous Deposition / (Liu Z.). - Clay Mineralogy and Geochemistry of Source Areas. - Clay Minerals. - Geochemistry. - Terrigenous Sediment Supply in Glacial Cycles. - Long-Term Changes of Terrigenous Sediment Supply. - 4.3 Biogenic Deposition. - Carbonate / (Li J. and Wang P.). - Opal / (Wang R.). - 4.4 Coral Reefs / (Yu K. and Zhao J.). - Modern Coral Reef Distribution. - Carbonate Platform Sediments and Calcium Carbonate Production. - Reef History. - 4.5 Volcanic Deposition / (Liu Z.). - Volcanic Rock Distribution. - Volcanic Ash Records. - Case Studies: Pinatubo, Toba. - 4.6 Estimation of Deposit Mass Since the Oligocene / (Huang W. and Wang P.). - Data Sources and Analyses. - Sediment Distribution and Mass. - Estimation of Terrigenous and Carbonate Masses. - Depositional Patterns. - Major Characteristics of SCS Sedimentation. - References. - 5 Upper Water Structure and Paleo-Monsoon. - Introduction. - 5.1 Sea Surface Temperature History / (Jian Z. and Tian J.). - SST Proxies. - Paleo-SST Reconstruction. - Paleo-SST Patterns. - 5.2 Thermocline Depth History / (Tian J. and Jian Z.). - Proxies of Thermocline Depth. - Paleo-Thermocline Depth. - 5.3 Vegetation History in Deep-Sea Record / (Sun X.). - Pollen Distribution in Surface Sediments. - Long-Term Evolution. - Last Glacial Pollen Records: North-South Differences. - North-South Comparison of the Vegetation During the LGM. - 5.4 Monsoon History / (Jian Z. and Tian J.). - Monsoon Proxies. - Tectonic-Scale Long-Term Evolution. - Orbital-Scale Variability. - Suborbital-Scale Variability. - Summary. - References. - 6 Deep Waters and Oceanic Connection / Quanhong Zhao, Qianyu Li and Zhimin Jian. - Introduction. - 6.1 Modern Deep Waters and Their Faunal Features. - Marginal Seas in the Western Pacific. - Modern Intermediate and Deep Waters in the South China Sea. - Modern Deep-Sea Benthic Foraminifera and Ostracods. - 6.2 Late Quaternary Deep-Water Faunas and Stable Isotopes. - 6.3 Neogene and Oligocene Deep-Water Benthic Faunas from ODP Leg 184 Sites. - Site 1148 Benthic Foraminifera. - Site 1148 Ostracods. - Faunal Indication of Deep-Water Mass Changes. - 6.4 Deep Water Evolution: Evidence from Carbonate. - Preservation and Isotopes. - Carbonate Dissolution. - Isotopic Records. - 6.5 Oceanic Connection. - Summary. - References. - 7 Biogeochemistry and the Carbon Reservoir. - Introduction. - 7.1 Productivity and Nutrient Dynamics in the Modern South China Sea / (Zhao M.). - Primary Productivity. - Nutrient Supplies. - Community Structure, Export Productivity and Sedimentary Biogenic Content. - 7.2 Paleoproductivity Reconstruction of the South China Sea / (Zhao M.). - Patterns of Productivity Changes During Glacial-Interglacial Oscillations. - Pre-Pleistocene Paleoproductivity Changes. - 7.3 Carbon Reservoir Changes / (Wang P., Tian J. and Li J.). - Modern Carbon Cycling. - Late Quaternary δ13C Cyclicity. - Long-Term Trend of Carbon Isotopes. - Summary. - References. - 8 History of the South China Sea – A Synthesis / Pinxian Wang and Qianyu Li. - Introduction. - 8.1 Evolution of the South China Sea Basin. - Pre-Spreading Stage in the Early Paleogene. - Seafloor Spreading in the Oligocene-Early Miocene. - Post-Spreading Stage Since the Late Miocene. - 8.2 Evolution of the East Asian Monsoon. - Summer Monsoon and Chemical Weathering. - Winter Monsoon and North-South Contrast. - East and South Asian Monsoons. - 8.3 Evolution of Continent-Ocean Interactions. - References. - Index.
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 15 (2014): 4958–4983, doi:10.1002/2014GC005567.
    Description: Combined analyses of deep tow magnetic anomalies and International Ocean Discovery Program Expedition 349 cores show that initial seafloor spreading started around 33 Ma in the northeastern South China Sea (SCS), but varied slightly by 1–2 Myr along the northern continent-ocean boundary (COB). A southward ridge jump of ∼20 km occurred around 23.6 Ma in the East Subbasin; this timing also slightly varied along the ridge and was coeval to the onset of seafloor spreading in the Southwest Subbasin, which propagated for about 400 km southwestward from ∼23.6 to ∼21.5 Ma. The terminal age of seafloor spreading is ∼15 Ma in the East Subbasin and ∼16 Ma in the Southwest Subbasin. The full spreading rate in the East Subbasin varied largely from ∼20 to ∼80 km/Myr, but mostly decreased with time except for the period between ∼26.0 Ma and the ridge jump (∼23.6 Ma), within which the rate was the fastest at ∼70 km/Myr on average. The spreading rates are not correlated, in most cases, to magnetic anomaly amplitudes that reflect basement magnetization contrasts. Shipboard magnetic measurements reveal at least one magnetic reversal in the top 100 m of basaltic layers, in addition to large vertical intensity variations. These complexities are caused by late-stage lava flows that are magnetized in a different polarity from the primary basaltic layer emplaced during the main phase of crustal accretion. Deep tow magnetic modeling also reveals this smearing in basement magnetizations by incorporating a contamination coefficient of 0.5, which partly alleviates the problem of assuming a magnetic blocking model of constant thickness and uniform magnetization. The primary contribution to magnetic anomalies of the SCS is not in the top 100 m of the igneous basement.
    Description: This research is funded by National Science Foundation of China (grant 91028007, grant 91428309), Program for New Century Excellent Talents in University, and Research Fund for the Doctoral Program of Higher Education of China (grant 20100072110036).
    Description: 2015-06-27
    Keywords: Deep tow magnetic survey ; Magnetic anomaly ; Crustal evolution ; Modeling ; International Ocean Discovery Program Expedition 349 ; South China Sea tectonics
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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  • 3
    Publication Date: 2022-05-26
    Description: Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Solid Earth 120 (2015): 1377–1399, doi:10.1002/2014JB011686.
    Description: Coring/logging data and physical property measurements from International Ocean Discovery Program Expedition 349 are integrated with, and correlated to, reflection seismic data to map seismic sequence boundaries and facies of the central basin and neighboring regions of the South China Sea. First-order sequence boundaries are interpreted, which are Oligocene/Miocene, middle Miocene/late Miocene, Miocene/Pliocene, and Pliocene/Pleistocene boundaries. A characteristic early Pleistocene strong reflector is also identified, which marks the top of extensive carbonate-rich deposition in the southern East and Southwest Subbasins. The fossil spreading ridge and the boundary between the East and Southwest Subbasins acted as major sedimentary barriers, across which seismic facies changes sharply and cannot be easily correlated. The sharp seismic facies change along the Miocene-Pliocene boundary indicates that a dramatic regional tectonostratigraphic event occurred at about 5 Ma, coeval with the onsets of uplift of Taiwan and accelerated subsidence and transgression in the northern margin. The depocenter or the area of the highest sedimentation rate switched from the northern East Subbasin during the Miocene to the Southwest Subbasin and the area close to the fossil ridge in the southern East Subbasin in the Pleistocene. The most active faulting and vertical uplifting now occur in the southern East Subbasin, caused most likely by the active and fastest subduction/obduction in the southern segment of the Manila Trench and the collision between the northeast Palawan and the Luzon arc. Timing of magmatic intrusions and seamounts constrained by seismic stratigraphy in the central basin varies and does not show temporal pulsing in their activities.
    Description: This research is funded by National Science Foundation of China (grants 91428309 and 91028007), Program for New Century Excellent Talents in University, and Research Fund for the Doctoral Program of Higher Education of China (grant 20100072110036).
    Description: 2015-09-16
    Keywords: South China Sea ; Seismic stratigraphy ; Seismic facies ; Neotectonism ; IODP Expedition 349 ; Core-well-seismic integration
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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  • 4
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    Unknown
    PANGAEA
    In:  Supplement to: Gallagher, Stephen John; Villa, Giuliana; Drysdale, Russell N; Wade, Bridget S; Scher, Howie D; Li, Qianyu; Wallace, Malcolm W; Holdgate, Guy R (2013): A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr. Paleoceanography, 28(1), 1-13, https://doi.org/10.1029/2012PA002326
    Publication Date: 2023-01-13
    Description: Fossil, facies, and isotope analyses of an early high-paleolatitude (55°S) section suggests a highly unstable East Antarctic Ice Sheet from 32 to 27 Myr. The waxing and waning of this ice sheet from 140% to 40% of its present volume caused sea level changes of ±25 m (ranging from -30 to +50 m) related to periodic glacial (100,000 to 200,000 years) and shorter interglacial events. The near-field Gippsland sea level (GSL) curve shares many similarities to the far-field New Jersey sea level (NJSL) estimates. However, there are possible resolution errors due to biochronology, taphonomy, and paleodepth estimates and the relative lack of lowstand deposits (in NJSL) that prevent detailed correlations with GSL. Nevertheless, the lateral variations in sea level between the GSL section and NJSL record that suggest ocean siphoning and antisiphoning may have propagated synchronous yet variable sea levels.
    Keywords: Australia; Groper-1; Sampling Well; WELL
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 5
    Publication Date: 2023-01-13
    Description: Transient electromagnetic data is devided into three parts. Observe dbdt.npy is the observed transient electromagnetic data, the data is a vector (400 elements in the vector). this data is used to inversion the conductivity below the seafloor. Receiver location.npy is the location of receiver above the seafloor, (total 50 stations). Times window.npy is the observation time gate. (8 time gates)
    Keywords: Mid-Atlantic Ridge; Plume survey data; self-potential data; TAG; TAG hydrothermal field (Mid-Atlantic Ridge); TIA; Towed Instrument Array; Trans-Atlantic Geotraverse; Transient electromagnetic data
    Type: Dataset
    Format: application/zip, 4.2 kBytes
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  • 6
    Publication Date: 2023-02-07
    Keywords: AGE; Age, maximum/old; Age, minimum/young; Australia; Coefficient; Density, grain; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Groper-1; Paleoelevation; Porosity; Sampling Well; WELL
    Type: Dataset
    Format: text/tab-separated-values, 432 data points
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  • 7
    Publication Date: 2023-02-13
    Keywords: AGE; Australia; Calcium carbonate; Counting 〉150 µm fraction; DEPTH, sediment/rock; Glauconite; Groper-1; Lithologic unit/sequence; Lithology/composition/facies; Mass spectrometer, Finnigan, MAT 253; Sampling Well; WELL; δ13C, carbonate; δ18O, carbonate
    Type: Dataset
    Format: text/tab-separated-values, 956 data points
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  • 8
    Publication Date: 2023-02-12
    Keywords: AGE; Australia; Calculated; Counting 〉150 µm fraction; DEPTH, sediment/rock; Foraminifera, benthic shallow water species; Groper-1; Lithologic unit/sequence; Paleoelevation; Sampling Well; Sea level, relative; WELL
    Type: Dataset
    Format: text/tab-separated-values, 856 data points
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  • 9
    Publication Date: 2023-02-12
    Description: Transient electromagnetic data, self-potential data and plume survey data (temperature data and turbidity data) were collected at the Trans-Atlantic Geotraverse (TAG) hydrothermal mound. A double-towed system allows us to measure the transient electromagnetic data near the seafloor continuously. A deep-towed system allows us to measure the self-potential data near the seafloor continuously, meawhile, RBR sensor mounted on the steel cable measured the temperature data and turbidity data along with the self-potential survey line (RBR sensor at an altitude of approximately 80m above the seafloor). Self-potential survey and transient electromagnetic survey line are very close. All the data match to the ultra-short baseline (USBL) positioning data. By Inverting the self-potential data and transient data, delineates the geometry of the seafloor massive sulfide deposit at TAG.
    Keywords: Depth, bathymetric; Electric field; Electric potential; LATITUDE; Liner Length; LONGITUDE; Mid-Atlantic Ridge; Plume survey data; RBRS; RBR Sensors; self-potential data; TAG; TAG hydrothermal field (Mid-Atlantic Ridge); Temperature, water; TIA; Towed Instrument Array; Trans-Atlantic Geotraverse; Transient electromagnetic data; Turbidity (Nephelometric turbidity unit); x; y
    Type: Dataset
    Format: text/tab-separated-values, 9738 data points
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  • 10
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    Unknown
    PANGAEA
    In:  Supplement to: James, Noel P; Feary, David A; Surlyk, Finn; Toni Simo, J A; Betzler, Christian; Holbourn, Ann E; Li, Qianyu; Matsuda, Hiroki; Machiyama, Hideaki; Brooks, Gregg R; Andres, Miriam S; Hine, Albert C; Malone, Mitchell J; Shipboard Scientific Party (2000): Quaternary bryozoan reef mounds in cool-water, upper slope environments: Great Australian Bight. Geology, 28(7), 647-650, https://doi.org/10.1130/0091-7613(2000)28%3C647:QBRMIC%3E2.0.CO;2
    Publication Date: 2023-06-27
    Description: Bryozoan reef mounds are common features in the geological record, occurring within mid-ramp, slope paleoenvironments, especially in Paleozoic carbonate successions, but until now have not been recorded from the modern ocean. Recent scientific drilling in the Great Australian Bight (Ocean Drilling Program Leg 182) has confirmed the existence of shallow subsurface bryozoan reef mounds in modern water depths of 200-350 m. These structures have as much as 65 m of synoptic relief, and occur both as single mounds and as mound complexes. They are unlithified, have a floatstone texture, and are rich in delicate branching, encrusting and/or nodular-arborescent, flat-robust branching, fenestrate, and articulated zooidal bryozoan growth forms. The muddy matrix is composed of foraminifers, serpulids, fecal pellets, irregular bioclasts, sponge spicules, and calcareous nannofossils. The 14C accelerator mass spectrometry dates of 26.6-35.1 ka indicate that the most recent mounds, the tops of which are 7-10 m below the modern seafloor, flourished during the last glacial lowstand but perished during transgressive sea-level rise. This history reflects changing oceanographic current patterns; strong upwelling during lowstands, and reduced upwelling and lowered trophic resources during highstands. Large specimens of benthic foraminifers restricted to the mounds confirm overall mesotrophic growth conditions. The mounds are similar in geometry, scale, general composition, and paleoenvironments to older structures, but lack obvious microbial influence and extensive synsedimentary cementation. Such differences reflect either short-term local conditions or long-term temporal changes in ocean chemistry and biology.
    Keywords: 182-1131B; AGE; Age, standard deviation; Calculated; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Great Australian Bight; Joides Resolution; Leg182; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
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