The COSC-2 drill core and its well-preserved lower Palaeozoic sedimentary succession - an unexpected treasure beneath the Caledonian nappes

doi:10.3176/earth.2024.13

NIGPAS OpenIR

	The COSC-2 drill core and its well-preserved lower Palaeozoic sedimentary succession - an unexpected treasure beneath the Caledonian nappes
通讯作者	Lehnert, Oliver([email protected])
	Lehnert, Oliver 1,2; Almqvist, Bjarne 3; Anderson, Mark 4,5; Andersson, Jenny 3,6; Cuthbert, Simon 7; Calner, Mikael 8; Carter, Isabel 7,9; Callegari, Riccardo 7,9; Juhlin, Christopher 3; Lorenz, Henning 3
	2024
发表期刊	ESTONIAN JOURNAL OF EARTH SCIENCES
ISSN	1736-4728
卷号	73 期号:2 页码:134-140
摘要	The Collisional Orogeny in the Scandinavian Caledonides (COSC) project focuses on processes related to the closure of the Iapetus Ocean, causing the Ordovician-Silurian continent- continent collision between Baltica and Laurentia. The rock succession in the second drill core (COSC-2) from the J & auml;mt land County, central Sweden, provides the base for detailed sedi- mentological, stratigraphic, geophysical, geochemical, geothermal and structural studies. The basement, comprising 1.66-1.65 Ga Transscandinavian Igneous Belt porphyries intruded by 1.47 Ga and 1.27-1.26 Ga mafic dykes and sills, is heavily weathered towards the top. Here it grades into typical saprock and saprolite (including immature soil reflecting the sub-Cambrian peneplain). The overlying sedimentary sequence starts with basal conglomerates and heterogeneous sediments with shell fragments, indicating an early Cambrian rather than a Neoproterozoic age for the marine transgression in the area. The developing early Cambrian basin was rapidly filled, initially by mostly coarse-grained sediment gravity flows. These strata are covered by sandstone turbidites that show an upward transition into the Alum Shale Formation, representing a tectonically quieter period (mid-Cambrian/Maolingian to Early Ordovician/Tremadocian). The upper part of the Alum Shale Formation is overlain by a late Early Ordovician turbidite succession. Local sources of sediments below the Alum Shale Formation and the extended deposition period may indicate continuous sedimentation in a pull-apart basin pre served in a window beneath the Caledonian thrust sheets.
关键词	Caledonian Orogen Scandinavian Caledonides (COSC) ICDP Baltica Cambrian Ordovician Sweden
DOI	10.3176/earth.2024.13
收录类别	SCI
语种	英语
关键词[WOS]	SCANDINAVIAN CALEDONIDES ; BALTICA ; OROGEN
资助项目	ICDP ; Deutsche Forschungsgemein schaft[DFG 867/121] ; Deutsche Forschungsgemein schaft[131] ; Deutsche Forschungsgemein schaft[132] ; National Science Centre, Poland[2018/29/B/ST10/02315] ; National Science Centre, Poland[2019/33/B/ST10/01728]
WOS研究方向	Geology
WOS类目	Geology ; Geosciences, Multidisciplinary
WOS记录号	WOS:001348024200001
项目资助者	ICDP ; Deutsche Forschungsgemein schaft ; National Science Centre, Poland
出版者	ESTONIAN ACAD PUBLISHERS
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44523
专题	中国科学院南京地质古生物研究所
通讯作者	Lehnert, Oliver
作者单位	1.Friedrich Alexander Univ Erlangen Nurnberg FAU, Geozent Nordbayern, Schlossgarten 5, D-91054 Erlangen, Germany 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Beijing East Rd 39, Nanjing 210008, Peoples R China 3.Uppsala Univ, Dept Earth Sci, Geophys, Geoctr, Villavagen 16, S-75236 Uppsala, Sweden 4.Univ Plymouth, Sch Geog Earth & Environm Sci, Portland Sq Bldg, Plymouth PL4 8AA, England 5.Univ Hull, Sch Biol Biomed & Environm Sci, Cottingham Rd, Kingston Upon Hull HU6 7RX, England 6.Geol Survey Sweden, Villavagen 18, S-75236 Uppsala, Sweden 7.AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Al Mickiewicza 30, PL-30059 Krakow, Poland 8.Lund Univ, Dept Geol, Solvegatan 12, S-22362 Lund, Sweden 9.Uppsala Univ, Dept Earth Sci Minerol Petrol & Tecton, Petrol & Tecton, Villavagen 16, S-75236 Uppsala, Sweden 10.Swiss Fed Inst Technol, Geol Inst, Dept Earth Sci, NO E 63,Sonneggstr 5, CH-8092 Zurich, Switzerland
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Lehnert, Oliver,Almqvist, Bjarne,Anderson, Mark,et al. The COSC-2 drill core and its well-preserved lower Palaeozoic sedimentary succession - an unexpected treasure beneath the Caledonian nappes[J]. ESTONIAN JOURNAL OF EARTH SCIENCES,2024,73(2):134-140.
APA	Lehnert, Oliver.,Almqvist, Bjarne.,Anderson, Mark.,Andersson, Jenny.,Cuthbert, Simon.,...&Ziemniak, Grzegorz.(2024).The COSC-2 drill core and its well-preserved lower Palaeozoic sedimentary succession - an unexpected treasure beneath the Caledonian nappes.ESTONIAN JOURNAL OF EARTH SCIENCES,73(2),134-140.
MLA	Lehnert, Oliver,et al."The COSC-2 drill core and its well-preserved lower Palaeozoic sedimentary succession - an unexpected treasure beneath the Caledonian nappes".ESTONIAN JOURNAL OF EARTH SCIENCES 73.2(2024):134-140.