
Clay mineral characteristics of sediments in the seamount basin of the Western Pacific and its indicative significance
DENG Tao, XU Dong, XIAO Tinglu, YE Liming, ZHANG Weiyan
Journal of Marine Sciences ›› 2023, Vol. 41 ›› Issue (3) : 56-72.
Clay mineral characteristics of sediments in the seamount basin of the Western Pacific and its indicative significance
The clay mineral assemblage in abyssal sediments can reflect the paleoclimate and paleoenvironment changes of the provenance area. Predecessors have many studies about the characteristics of clay mineral assemblages in the Pacific sediments west of the Mariana Trench, but the less research on the characteristics of clay mineral assemblages in the east of the Mariana Trench limits a deeper understanding of the relationship between the Asian aeolian dust input and the Pacific deep-sea sedimentary environment. In this study, 31 surface samples and 1 core sample collected in the Malkus-Wake Seamount area of the Western Pacific during the 2019 DY54 cruise were analyzed for clay minerals, combined with the data collected in the Western Pacific and nearby areas, we discussed the characteristics of composition, distribution and the provenance of clay minerals. The results showed that illite was the main clay mineral in surface sediments of the study area, with an average value of 69%; the content of chlorite and kaolinite were the second, with an average of 16% and 11% respectively; that of smectite was the least, with an average of 3%. In the core P04, the assemblage of the clay mineral was basically the same as surface samples, but below 250 cm depth, the content of smectite increased significantly, while the content of illite decreased relatively. Provenance analysis showed that Asian aeolian dust was the main source of illite in the study area, and kaolinite and chlorite might also be from Asian aeolian dust, and the East Asian winter monsoon was the main transport force of these clay minerals. The smectite in sediments could be mainly formed by weathering of submarine volcanic materials. The increase of illite content while the decrease of smectite content in the upper layer of core P04 sediment was responded to the increase of Asian aeolian dust input since the Middle Pleistocene.
Western Pacific / clay minerals / aeolian deposition / provenance
[1] |
王银, 吕士辉, 苏新, 等. 西北太平洋多金属结核区沉积物黏土矿物特征[J]. 中国有色金属学报, 2021, 31(10):2696-2712.
|
[2] |
明洁, 李安春, 孟庆勇, 等. 东菲律宾海帕里西维拉海盆第四纪黏土矿物组合特征及物源分析[J]. 海洋地质与第四纪地质, 2012, 32(4):139-148.
|
[3] |
刘华华, 蒋富清, 周烨, 等. 晚更新世以来奄美三角盆地黏土矿物的来源及其对古气候的指示[J]. 地球科学进展, 2016, 31(3):286-297.
对“国际大洋发现计划”(IODP)351航次U1438A孔晚更新世以来沉积物中黏土矿物的组成、含量及矿物学特征进行了分析。结果表明,U1438A孔中黏土矿物以伊利石为主,平均含量为57%;其次是蒙皂石,平均含量为26%;绿泥石的平均含量为14%;高岭石的含量最少,平均仅为3%。伊利石的结晶度较好(<0.4°Δ2θ),而且化学指数较低(<0.43),表明伊利石主要形成于干冷的气候环境。通过将U1438A孔黏土矿物组合特征与周边可能源区对比,并结合黏土矿物的结晶参数特征,认为蒙皂石主要来源于奄美三角盆地周边岛弧火山物质;伊利石、绿泥石和高岭石主要来自于亚洲大陆风尘。(伊利石+绿泥石)/蒙皂石比值阶段性增加与亚洲大陆晚更新世以来变干冷的趋势是一致的。(伊利石+绿泥石)/蒙皂石和(伊利石+绿泥石)/高岭石比值在冰期的高值,指示了冰期亚洲风尘物质输入的增加,这是对亚洲大陆冰期干旱化和东亚季风增强的响应。
We analyzed the clay mineral assemblages, content and mineralogical characteristics of Hole U1438A sediment recovered from Amami Sankaku Basin during International Ocean Discovery Program (IODP) expedition 351. The results show that the clay minerals are mainly composed of illite (average 57%), smectite (average 26%), chlorite (average 14%) and minor kaolinite(average 3%). The crystallinity of illite in all samples are good (<0.4 Δ° 2θ), and the chemical indexes of illite in all samples are low (<0.4). Both indicate that illite in Hole U1438A formed in cold and dry climate. By comparing clay mineral assemblages of hole U1438A and the potential sediment sources, we suggest that smectite be mainly derived from the volcanic materials around Amami Sankaku Basin. Illite, chlorite and kaolinite are mainly derived from the Asian dust. The ratios of (illite+chlorite)/smectite show a phased increase over the last 350 ka, which is consistent with the cold and drying trend of the Asian continent since late Pleistocene. The high ratios of (illite+chlorite)/smectite and (illite+chlorite)/kaolinite during glacial period indicate that much more Asian dust was input into the Amami Sankaku Basin, which are responded to the aridity of Asian continent and strengthened east Asian Monsoon during glacial period. |
[4] |
|
[5] |
|
[6] |
邱忠荣, 马维林, 张霄宇, 等. 西北太平洋表层沉积物地球化学特征及其物源指示意义[J]. 浙江大学学报:理学版, 2020, 47(3):345-354,369.
|
[7] |
|
[8] |
吕华华. 赤道北太平洋粘土沉积物的标型特征及其应用研究[D]. 青岛: 中国科学院海洋研究所, 2005.
|
[9] |
黄杰, 万世明, 张国良, 等. 海底地形特征对东菲律宾海表层黏土矿物分布的影响[J]. 海洋地质与第四纪地质, 2017, 37(1):77-85.
|
[10] |
|
[11] |
田旭, 胡邦琦, 王飞飞, 等. 末次冰消期(1.9万年)以来冲绳海槽中部黏土矿物来源及其环境响应[J]. 中国地质, 2020, 47(5):1501-1511.
|
[12] |
刘志飞, 赵玉龙, 王轶婕, 等. 南海第四纪东亚季风演化的粘土矿物指标[J]. 第四纪研究, 2017, 37(5):921-933.
|
[13] |
|
[14] |
明洁. 东菲律宾海帕里西维拉海盆第四纪沉积特征和物质来源及其古环境意义[D]. 青岛: 中国科学院海洋研究所, 2013.
|
[15] |
丁雪, 胡邦琦, 徐方建, 等. 晚上新世以来菲律宾海盆XT4孔黏土矿物特征及其古环境意义[J]. 海洋地质与第四纪地质, 2021, 41(1):42-51.
|
[16] |
任江波, 何高文, 姚会强, 等. 西太平洋海山富钴结壳的稀土和铂族元素特征及其意义[J]. 地球科学, 2016, 41(10):1745-1757.
|
[17] |
|
[18] |
王薇. 西北太平洋现代风尘特征及其物源与输运机制对比研究[D]. 青岛: 中国科学院海洋研究所, 2019.
|
[19] |
|
[20] |
熊志方, 李铁刚, 翟滨, 等. 低纬度西太平洋末次冰期Ethmodiscus rex硅藻席粘土矿物特征及形成机制启示[J]. 地球科学, 2010, 35(4):551-562.
|
[21] |
杨雅秀, 张乃娴, 苏昭冰, 等. 中国粘土矿物[M]. 北京: 地质出版社, 1994.
|
[22] |
|
[23] |
|
[24] |
靳宁. 帕里西维拉海盆西北部海域粘土矿物分布特征研究[D]. 青岛: 中国科学院海洋研究所, 2006.
|
[25] |
|
[26] |
A marine sediment record from the central Bering Sea, spanning the last 20 thousand years (ka), was studied to unravel the depositional history with regard to terrigenous sediment supply and biogenic sedimentation. Methodic approaches comprised the inference of accumulation rates of siliciclastic and biogenic components, grain-size analysis, and (clay) mineralogy, as well as paleoclimatic modelling. Changes in the depositional history provides insight into land-ocean linkages of paleoenvironmental changes. During the finale of the Last Glacial Maximum, the depositional environment was characterized by hemipelagic background sedimentation. A marked change in the terrigenous sediment provenance during the late Heinrich 1 Stadial (15.7–14.5 ka), indicated by increases in kaolinite and a high glaciofluvial influx of clay, gives evidence of the deglaciation of the Brooks Range in the hinterland of Alaska. This meltwater pulse also stimulated the postglacial onset of biological productivity. Glacial melt implies regional climate warming during a time of widespread cooling on the northern hemisphere. Our simulation experiment with a coupled climate model suggests atmospheric teleconnections to the North Atlantic, with impacts on the dynamics of the Aleutian Low system that gave rise to warmer winters and an early onset of spring during that time. The late deglacial period between 14.5 and 11.0 ka was characterized by enhanced fluvial runoff and biological productivity in the course of climate amelioration, sea-level rise, seasonal sea-ice retreat, and permafrost thaw in the hinterland. The latter processes temporarily stalled during the Younger Dryas stadial (12.9-11.7 ka) and commenced again during the Preboreal (earliest Holocene), after 11.7 ka. High river runoff might have fertilized the Bering Sea and contributed to enhanced upper ocean stratification. Since 11.0 ka, advanced transgression has shifted the coast line and fluvial influence of the Yukon River away from the study site. The opening of the Bering Strait strengthened contour currents along the continental slope, leaving behind winnowed sand-rich sediments through the early to mid-Holocene, with non-deposition occurring since about 6.0 ka.
|
[27] |
|
[28] |
万世明, 李安春, 胥可辉, 等. 南海北部中新世以来粘土矿物特征及东亚古季风记录[J]. 地球科学, 2008, 33(3):289-300.
|
[29] |
李国刚. 中国近海表层沉积物中粘土矿物的组成、分布及其地质意义[J]. 海洋学报, 1990, 12(4):470-479.
|
[30] |
|
[31] |
张德玉. 马里亚纳海槽和西菲律宾海盆更新世以来沉积物中的粘土矿物[J]. 沉积学报, 1993, 11(1):111-120.
|
[32] |
舒雨婷, 郑玉龙, 许冬, 等. 西菲律宾海盆I8孔黏土矿物的物源分析[J]. 海洋学研究, 2015, 33(4):61-69.
应用X-射线衍射(XRD)方法分析了菲律宾海盆西部I8柱状样35个沉积物样品中的黏土矿物组分,结果表明:I8孔中黏土矿物以伊利石(40%)为主,蒙皂石(28%)和绿泥石(20%)次之,高岭石(12%)相对较低,且伊利石结晶度较好。黏土矿物来源分析表明,伊利石主要来源于亚洲大陆的风尘输入;蒙皂石主要源于研究样品周围火山物质的蚀变;而绿泥石和高岭石可能主要源自吕宋岛风化产物。
|
[33] |
靳宁, 李安春, 刘海志, 等. 帕里西维拉海盆西北部表层沉积物中粘土矿物的分布特征及物源分析[J]. 海洋与湖沼, 2007, 38(6):504-511.
|
[34] |
石学法, 陈丽蓉, 李坤业, 等. 西菲律宾海西部海域粘土沉积物的成因矿物学研究[J]. 海洋地质与第四纪地质, 1995, 15(2):61-72.
|
[35] |
|
[36] |
俞旭, 江超华. 现代海洋沉积矿物及其X射线衍射研究[M]. 北京: 科学出版社, 1984:113-156.
|
[37] |
|
[38] |
|
[39] |
|
[40] |
池野, 李安春, 蒋富清, 等. 吕宋岛东部海域黏土矿物组合特征及物源分析[J]. 海洋科学, 2009, 33(9):80-88.
|
[41] |
|
[42] |
|
[43] |
侯乔琨, 黄菲, 陈峥. 北半球冬季高空西风急流环路 “闭合-断开” 的年际振荡及其影响机制[J]. 中国海洋大学学报:自然科学版, 2022, 52(10):34-46.
|
[44] |
The Sr and Nd isotopic compositions of siliciclastic sediments and the Nd isotopic compositions of planktonic foraminifera are investigated in sediment trap samples collected in 2015 at water depths of 500 and 2,800 m to (1) track the seasonal changes in the sources and transport patterns of siliciclastic sediments to Benham Rise, (2) constrain the Nd isotopic compositions of the planktonic foraminifera throughout the water column, and (3) assess the influences of lithogenic inputs on the Nd isotopic compositions of the water masses. We demonstrate that volcanic matter and eolian dust are derived primarily from Luzon Island and the Ordos Desert, respectively. In addition, we show that reduced precipitation over Luzon Island and the weakened East Asian winter monsoon intensity result in mass fluxes from Luzon Island and the eastern Asian deserts to the sea, respectively, that are weaker in the winter than in the spring. Furthermore, the εNd values of the foraminifera collected at a water depth of 500 m change slightly in 2015, suggesting negligible impacts of lithogenic Nd inputs characterized by significant seasonal flux variations. In contrast, the εNd values of the planktonic foraminifera collected at a water depth of 2,800 m are systematically more radiogenic and appear to display seasonal variability. Such results suggest the rapid modification of εNd values during the settling of planktonic foraminifera by the precipitation of Mn coatings derived from water masses at deposition depths, with greater contributions of colder water masses originating from the volcanic Luzon Island margin during the winter.
|
[45] |
王薇, 徐兆凯, 冯旭光, 等. 西菲律宾海现代风尘物质组成特征及其物源指示意义[J]. 地球科学, 2020, 45(2):559-568.
|
[46] |
|
[47] |
刘华华. 中新世以来奄美三角盆地沉积物中粘土矿物的来源[D]. 青岛: 中国科学院海洋研究所, 2016.
|
[48] |
师育新, 戴雪荣, 宋之光, 等. 我国不同气候带黄土中粘土矿物组合特征分析[J]. 沉积学报, 2005, 23(4):690-695.
|
[49] |
|
[50] |
Nie, Junsheng; Hu, Xiaofei; Liu, Shanpin; Peng, Wenbin; Ji, Shunchuan; Pan, Baotian Lanzhou Univ, Key Lab Western Chinas Environm Syst, Coll Earth & Environm Sci, Minist Educ, Lanzhou 73000, Peoples R China. Stevens, Thomas Uppsala Univ, Dept Earth Sci, S-75236 Uppsala, Sweden. Rittner, Martin; Vermeesch, Pieter UCL, Dept Earth Sci, London WC1E 6BT, England. Stockli, Daniel; Breecker, Daniel Univ Texas Austin, Dept Geol Sci, Austin, TX 78712 USA. Garzanti, Eduardo; Limonta, Mara; Ando, Sergio; Resentini, Alberto; Vezzoli, Giovanni Univ Milano Bicocca, Dept Earth & Environm Sci, I-20126 Milan, Italy. Bird, Anna Univ Hull, Dept Geog Environm & Earth Sci, Kingston Upon Hull HU6 7RX, N Humberside, England. Saylor, Joel Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77204 USA. Lu, Huayu Nanjing Univ, Sch Oceanog & Geog Sci, Nanjing 210023, Jiangsu, Peoples R China. Carter, Andrew Univ London, Dept Earth & Planetary Sci, London WC1E 7HX, England.
|
[51] |
|
[52] |
|
[53] |
刘季花, 石学法, 陈丽蓉, 等. 东太平洋沉积物中粘土组分的REEs和εNd:粘土来源的证据[J]. 中国科学D辑, 2004, 34(6):552-561.
|
[54] |
刘志飞, 李夏晶. 南海沉积物中蒙脱石的成因探讨[J]. 第四纪研究, 2011, 31(2):199-206.
|
[55] |
金性春. 大洋钻探与西太平洋构造[J]. 地球科学进展, 1995, 10(3):234-239.
|
[56] |
|
[57] |
|
[58] |
|
[59] |
A newly constructed record of eolian dust accumulation from the central North Pacific shows that dust deposition increased by an order of magnitude quite rapidly at 3.6 Ma. We associate this sudden drying with the uplift of at least the northern portion of the Tibetan Plateau, shutting off the Indian Ocean moisture source to central and western China. This ten‐fold increase in atmospheric dust loading appears to be associated with the 1‐m.y.‐long shift toward heavy δ18O values that occurred at 3.6–2.6 Ma. The dust grain‐size record of wind intensity begins its late Cenozoic coarsening a million years before the drying event, at ∼4.5 Ma. The northern hemisphere cooling that results in intensification of the subpolar westerly winds may have as its ultimate cause the drawdown of atmospheric CO2 in the latest Miocene and the early Pliocene closing of the Panamanian Seaway.
|
[60] |
万世明, 徐兆凯. 西太平洋风尘沉积记录研究进展[J]. 海洋与湖沼, 2017, 48(6):1208-1219.
|
[61] |
|
[62] |
Pre-Quaternary Asian dust accumulation rate increases were caused by monsoon-driven erosion increases.
|
[63] |
Eolian material within pelagic North Pacific Ocean (NPO) sediments contains considerable information about paleoclimate evolution in Asian dust source areas. Eolian signals preserved in NPO sediments have been used as indices for enhanced Asian interior aridity. We here report a detailed eolian dust record, with chemical index of alteration (CIA) and Rb/Sr variations, for NPO sediments from Ocean Drilling Program Hole 885A over the past 4.0 m.y. CIA and Rb/Sr co-vary with the dust signal carried by combined eolian hematite and goethite concentrations. Changes in CIA around the intensification of Northern Hemisphere glaciation (iNHG) event at ca. 2.75 Ma indicate that dust production in source areas was associated mostly with physical and chemical weathering before and after the iNHG event, respectively. We here attribute the eolian flux increase into the NPO across the iNHG event mainly to increased availability of wind-erodible sediment in dust source areas derived from snow and glacial meltwater runoff, which resulted from glacial expansion and enhanced snowfall in the mountains surrounding the Tarim region in response to global cooling. Our results provide a deeper understanding of Asian interior environmental changes in response to global paleoclimate changes, where dust source areas became intermittently moister rather than more arid in response to global cooling.
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感谢2019年大洋54航次的所有调查队员采集了本文所用样品。感谢实验员李奇同志对本文黏土矿物分析工作的指导。
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