K. Svennevig, P. Alsen, P. Guarnieri, J. Hovikoski, B. Lauridsen, G. Pedersen, H. Nøhr-Hansen, E. Sheldon
The geological map sheet of Kilen in 1:100 000 scale covers the south-eastern part of the Carboniferous– Palaeogene Wandel Sea Basin in eastern North Greenland. The map area is dominated by the Flade Isblink ice cap, which separates several minor isolated landmasses. On the semi-nunatak of Kilen, the map is mainly based on oblique photogrammetry and stratigraphical field work while in Erik S. Henius Land, Nordostrundingen and northern Amdrup Land the map is based on field data collected during previous, 1:500 000 scale regional mapping. Twenty-one Palaeozoic–Mesozoic mappable units were identified on Kilen, while the surrounding areas comprise the Late Cretaceous Nakkehoved Formation to the north-east and the Late Carboniferous Foldedal Formation to the south-west. On Kilen, the description of Jurassic–Cretaceous units follows a recently published lithostratigraphy. The Upper Palaeozoic–lowermost Cretaceous strata comprise seven formations and an informal mélange unit. The overlying Lower–Upper Cretaceous succession comprises the Galadriel Fjeld and Sølverbæk Formations, which are subdivided into six and five units, respectively. In addition, the Quaternary Ymer Formation was mapped on south-east Kilen. The Upper Palaeozoic to Mesozoic strata of Kilen are faulted and folded. Several post-Coniacian NNW–SSE-trending normal faults are identified and found to be passively folded by a later N–S compressional event. A prominent subhorizontal fault, the Central Detachment, separates two thrust sheets, the Kilen Thrust Sheet in the footwall and the Hondal Elv Thrust Sheet in the hanging wall. The style of deformation and the structures found on Kilen are caused by compressional tectonics resulting in post-extensional, presumably Early Eocene, folding and thrusting and basin inversion. The structural history of the surrounding areas and their relation to Kilen await further studies.
基伦1:10万比例尺的地质图覆盖了北格陵兰岛东部石炭系—古近系万德尔海盆地东南部。地图上的区域主要是Flade Isblink冰帽，它将几个较小的孤立大陆分开。在Kilen半冰原上，该地图主要基于斜向摄影测量和地层野外工作，而在Erik S. Henius Land、Nordostrundingen和Amdrup Land北部，该地图基于先前1:50万比尺区域制图收集的野外数据。Kilen上确定了21个古生代-中生代可填图单元，其周边地区包括东北方向的晚白垩世nakkehove组和西南方向的晚石炭世Foldedal组。在Kilen上，侏罗纪-白垩纪单元的描述遵循了最近发表的岩石地层学。上古生代-下白垩纪地层包括7个地层和一个非正式的地层单元。上白垩统下-上白垩统包括Galadriel Fjeld组和Sølverbæk组，分别被细分为6个和5个单元。此外，在祁连东南部圈定了第四纪二叠统组。祁连地区上古生界至中生界地层发育断裂和褶皱。确定了几条后coniian向nnw - se向的正断层，发现它们被后来的N-S挤压事件被动褶皱。一个突出的次水平断裂，即中央拆离，分离了两个逆冲片，下盘的基伦逆冲片和上盘的洪达尔Elv逆冲片。基伦的变形类型和构造是由挤压构造引起的后伸展作用(可能是早始新世)、褶皱、逆冲和盆地反转所致。周边地区的结构历史及其与Kilen的关系有待进一步研究。
{"title":"Descriptive text to the Geological map of Greenland, 1:100 000, Kilen 81 Ø.1 Syd","authors":"K. Svennevig, P. Alsen, P. Guarnieri, J. Hovikoski, B. Lauridsen, G. Pedersen, H. Nøhr-Hansen, E. Sheldon","doi":"10.34194/geusb.v8.4526","DOIUrl":"https://doi.org/10.34194/geusb.v8.4526","url":null,"abstract":"The geological map sheet of Kilen in 1:100 000 scale covers the south-eastern part of the Carboniferous– Palaeogene Wandel Sea Basin in eastern North Greenland. The map area is dominated by the Flade Isblink ice cap, which separates several minor isolated landmasses. On the semi-nunatak of Kilen, the map is mainly based on oblique photogrammetry and stratigraphical field work while in Erik S. Henius Land, Nordostrundingen and northern Amdrup Land the map is based on field data collected during previous, 1:500 000 scale regional mapping. Twenty-one Palaeozoic–Mesozoic mappable units were identified on Kilen, while the surrounding areas comprise the Late Cretaceous Nakkehoved Formation to the north-east and the Late Carboniferous Foldedal Formation to the south-west. On Kilen, the description of Jurassic–Cretaceous units follows a recently published lithostratigraphy. The Upper Palaeozoic–lowermost Cretaceous strata comprise seven formations and an informal mélange unit. The overlying Lower–Upper Cretaceous succession comprises the Galadriel Fjeld and Sølverbæk Formations, which are subdivided into six and five units, respectively. In addition, the Quaternary Ymer Formation was mapped on south-east Kilen. The Upper Palaeozoic to Mesozoic strata of Kilen are faulted and folded. Several post-Coniacian NNW–SSE-trending normal faults are identified and found to be passively folded by a later N–S compressional event. A prominent subhorizontal fault, the Central Detachment, separates two thrust sheets, the Kilen Thrust Sheet in the footwall and the Hondal Elv Thrust Sheet in the hanging wall. The style of deformation and the structures found on Kilen are caused by compressional tectonics resulting in post-extensional, presumably Early Eocene, folding and thrusting and basin inversion. The structural history of the surrounding areas and their relation to Kilen await further studies.","PeriodicalId":187390,"journal":{"name":"Geological Survey of Denmark and Greenland (GEUS) Bulletin","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121401929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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