Late Glacial and Holocene paleoceanography in the Skagerrak from high-resolution grain size records

被引:32
|
作者
Gyllencreutz, R [1 ]
机构
[1] Stockholm Univ, Dept Geol & Geochem, Stockholm, Sweden
关键词
Skagerrak; Holocene; grain size; sediment; Baltic sea; hydrographic shift;
D O I
10.1016/j.palaeo.2005.03.025
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
High-resolution grain size analyses of the AMS C-14-dated, 32 m long core MD99-2286 from the northeastern Skagerrak were performed in order to study late Glacial and Holocene paleoceanograpbic and sedimentary changes. All ages in this study are given in calibrated thousand years before present (= AD 1950), abbreviated 'kyr', unless otherwise noted. The distinct ending of IRD (ice rafted debris) in core MD99-2286, which was retrieved from a location down current from the final calving ice margin in the region, indicates that iceberg calving in the Skagerrak ended between 10.6 and 10.2 kyr. A clay-rich, sequence in core MD99-2286, deposited between 11.3 and 10.3 kyr, is attributed to outflow from the Baltic basin across south central Sweden. The sequence is correlated to similar units from cores along the Swedish west coast. The onset of this clay-rich deposition occurs progressively later in cores further south along the coast, supporting a previous hypothesis that differential glacio-isostatic uplift caused a southward migration of the Baltic outflow from the Otteid-Stenselva to the Gota Alv outlet. A distinct coarsening towards younger sediments in core MD99-2286 indicates a hydrographic shift at 8.5 kyr, which is correlated to a shift previously reported in the Skagerrak, Kattegat and the Norwegian Channel. This shift reflects the establishment of the modem circulation system in the eastern North Sea, as a consequence of the opening of the English Channel and the Danish straits and increased Atlantic water inflow, and the subsequent development of the South Jutland Current. A general trend of coarsening, poorer sorting and increasing variability from 8.5 kyr until the present indicates increasing strength and influence of the variable South Jutland Current. A series of changes from ca. 6.3 to ca. 3.8 kyr in core MD99-2286 reflects strengthening of the Jutland Current towards the present day sedimentation system in the Skagerrak-Kattegat. These changes are correlated to previously reported hydrographic shifts at 5.5 C-14 years BP in the Skagerrak and at 4.0 C-14 years BP in the Kattegat. It is suggested that these shifts were separate features of a transitional period related to strengthening of the current system. The resulting changes are differently manifested in different parts of the Skagerrak-Kattegat, due to the complex circulation system.
引用
收藏
页码:344 / 369
页数:26
相关论文
共 50 条
  • [21] Climate changes in East China since the Late-glacial inferred from high-resolution mountain peat humification records
    MA ChunMei1
    2 Department of Land Information Engineering
    3 Nanjing Institute of Geography & Limnology
    Science China Earth Sciences, 2009, (01) : 118 - 131
  • [22] Climate changes in East China since the Late-glacial inferred from high-resolution mountain peat humification records
    MA ChunMeiZHU ChengZHENG ChaoGuiYIN Qian ZHAO ZhiPing School of Geographic and Oceanographic SciencesNanjing UniversityNanjing China Department of Land Information EngineeringChuzhou CollegeChuzhou China Nanjing Institute of Geography LimnologyChinese Academy of SciencesNanjing China
    Science in China(Series D:Earth Sciences), 2009, 52 (01) : 118 - 131
  • [23] Climate changes in East China since the Late-glacial inferred from high-resolution mountain peat humification records
    ChunMei Ma
    Cheng Zhu
    ChaoGui Zheng
    Qian Yin
    ZhiPing Zhao
    Science in China Series D: Earth Sciences, 2009, 52 : 118 - 131
  • [24] A New High-resolution Late Glacial-Holocene Climatic Record from Eastern Nanling Mountains in South China附视频
    XUE Jibin ZHONG Wei ZHENG Yanming MA Qiaohong CAI Ying OUYANG Jun School of Geography South China Normal University Guangzhou China
    Chinese Geographical Science, 2009, (03) : 274 - 282
  • [25] Late glacial to Holocene sea-level changes in the Sea of Marmara: new evidence from high-resolution seismics and core studies
    Eris, Kursad Kadir
    Cagatay, M. N.
    Akcer, Sena
    Gasperini, Luca
    Mart, Yosi
    GEO-MARINE LETTERS, 2011, 31 (01) : 1 - 18
  • [26] Late glacial to Holocene sea-level changes in the Sea of Marmara: new evidence from high-resolution seismics and core studies
    Kürşad Kadir Eriş
    M. N. Çağatay
    Sena Akçer
    Luca Gasperini
    Yosi Mart
    Geo-Marine Letters, 2011, 31 : 1 - 18
  • [27] Late Miocene to Holocene high-resolution eastern equatorial Pacific carbonate records: stratigraphy linked by dissolution and paleoproductivity
    Lyle, Mitchell
    Drury, Anna Joy
    Tian, Jun
    Wilkens, Roy
    Westerhold, Thomas
    CLIMATE OF THE PAST, 2019, 15 (05) : 1715 - 1739
  • [28] High-Resolution Lacustrine Records of the Late Holocene Hydroclimate of the Sikhote-Alin Mountains, Russian Far East
    Razjigaeva, Nadezhda
    Ganzey, Larisa
    Grebennikova, Tatiana
    Kopoteva, Tatiana
    Klimin, Mikhail
    Arslanov, Khikmatulla
    Lyashchevskaya, Marina
    Panichev, Alexander
    Lupakov, Sergey
    BIOLOGY-BASEL, 2023, 12 (07):
  • [29] High-Resolution Records of the Holocene Paleoenvironmental Variation Reflected by Carbonate and Its Isotopic Compositions in Bosten Lake and Response to Glacial Activities
    Alexander PROKOPENKO
    Steffen MISCHKE
    Acta Geologica Sinica(English Edition), 2009, (06) : 1101 - 1115
  • [30] High-Resolution Records of the Holocene Paleoenvironmental Variation Reflected by Carbonate and Its Isotopic Compositions in Bosten Lake and Response to Glacial Activities
    Zhang Chengjun
    Zheng Mianping
    Prokopenko, Alexander
    Mischke, Steffen
    Gou Xiaohui
    Yang Qui
    Zhang Wanyi
    Feng Zhaodong
    ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2009, 83 (06) : 1101 - 1115