Norwegian Journal of Geology最新文献

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Distribution, deposition and impact of submarine mine tailings disposal on the fjord bottom in Frænfjorden, western Norway 挪威西部Frænfjorden峡湾底部海底尾矿处理的分布、沉积和影响

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2020-05-26 DOI: 10.17850/njg100-1-3

N. Baeten, A. Lepland, R. Bøe, Arnstein Amundsen, S. Chand, O. Longva

Frænfjorden, a fjord on the west coast of Norway, has been studied to increase our knowledge of the environmental effects of submarine tailings placement (STP). Fine-grained tailings consisting primarily of calcite are disposed of by Omya Hustadmarmor. The dataset, including multibeam echosounder data, shallow seismic, video data, grab samples and sediment cores, demonstrates that tailings are primarily deposited in an up to 2 km-wide area with a tailings thickness of up to 20 m. Minor quantities of tailings are spread outside the STP by tidal currents. Sediment cores show the difference in colour, mineralogy and grain size between the natural sediments and the tailings. The tailings have a white/grey colour, are very fine grained, contain high amounts of calcite and have a lower water content than the natural sediments. A series of multibeam echosounder data from 2013 to 2017 show that deposition of tailings has triggered several small gravity flows and slides. The tailings within the STP have a low stability compared to the natural sediments outside the STP because of their fine grain size and higher sensitivity, high slope angles, high sediment accumulation rates preventing normal consolidation, and loading of tailings causing overpressure in the underlying sediments.

对挪威西海岸的峡湾Frænfjorden进行了研究，以增加我们对海底尾矿放置(STP)对环境影响的了解。主要由方解石组成的细粒尾矿由Omya hustadmarmore处理。多波束测深数据、浅层地震数据、视频数据、抓拍样本和沉积物岩心数据表明，尾矿主要分布在2 km宽的区域内，尾矿厚度可达20 m。少量的尾矿被潮流扩散到STP外。沉积物岩心显示了天然沉积物与尾矿在颜色、矿物学和粒度上的差异。尾矿呈白色/灰色，颗粒非常细，含有大量方解石，含水量低于天然沉积物。2013年至2017年的一系列多波束测深数据表明，尾矿的沉积引发了几次小的重力流和滑动。与STP外的天然沉积物相比，STP内的尾矿具有较低的稳定性，因为其粒度细，敏感性高，坡度大，堆积速度快，无法正常固结，尾矿的加载导致下伏沉积物超压。

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引用次数: 2

Late Palaeozoic fault-controlled hydrothermal Cu–Zn mineralisation on Vanna island, West Troms Basement Complex, northern Norway 挪威北部West Troms基底杂岩Vanna岛晚古生代断层控制的热液Cu–Zn矿化

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2020-03-04 DOI: 10.17850/njg100-1-2

Hanne-Kristin Paulsen, S. Bergh, S. S. Palinkaš

The Vannareid–Burøysund fault is a major, brittle, normal fault in northern Norway, with cohesive fault rocks (cataclasites) that host Cu–Zn - bearing quartz - carbonate veins. The fault is exposed on the island of Vanna in the Neoarchaean to Palaeoproterozoic West Troms Basement Complex, separating variably deformed tonalitic gneisses in the footwall from mylonitised metasedimentary rocks and tonalites in the hanging wall. Radiometric dating (K–Ar illite) of normal fault movement along the Vannareid–Burøysund fault yielded a late Permian age, concurrent with incipient post - Caledonian continental rifting. The fault evolution and internal architecture of the Vannareid–Burøysund fault largely controlled the spatial distribution of mineralisation, and two main phases of the Cu–Zn mineralisation have been discerned. Early quartz - sphalerite veins are deposited in the cataclastic fault core zone, where initial movement along the fault created a fluid conduit that allowed for fluid flow and sphalerite deposition. With subsequent movement and widening of the fault zone, a later and spatially more extensive generation of quartz - chalcopyrite veins were deposited in both the fault core and the damage zones. Fluid inclusion micro - thermometry revealed that the ore - forming fluids were highly saline aqueous solutions (20 – 37 wt.% NaCl + CaCl 2 ) that carried base metals and sulphur. Further, the isotopic composition of hydrothermal carbonates indicates a magmatic source for the CO 2 . The structural data and obtained geochemical results indicate that the Cu–Zn mineralisation in the Vannareid–

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引用次数: 2

You learn as long as you drill; research synthesis from the Longyearbyen CO2 Laboratory, Svalbard, Norway 只要你训练，你就会学习；来自挪威斯瓦尔巴Longyearbyen CO2实验室的研究合成

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2020-01-21 DOI: 10.17850/njg008

S. Olaussen, K. Senger, A. Braathen, Stein-Andreas Grundvåg, A. Mørk

引用次数: 24

A new species of ischnacanthiform acanthodian from the Givetian of Mimerdalen, Svalbard 文章标题斯瓦尔巴群岛米梅尔达伦的吉田人一新种

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2020-01-13 DOI: 10.17850/njg99-4-05

M. Newman, C. Burrow, J. Blaauwen

A new ischnacanthiform acanthodian Serradentus armstrongi nov. gen. et sp. has been collected from the Middle Devonian (Givetian) Fiskekløfta Member, the upper member of the Tordalen Formation in the Mimerdalen Subgroup of Spitsbergen. The specimen comprises both pairs of upper and lower jaw bones, jaw cartilages, tooth or denticle whorls, dentition cones and spiky denticles. The latter two features have previously only been identified in Early Devonian ischnacanthiforms. The geology is consistent with a depositional environment of a brackish backwater lagoon with an anoxic bottom. The fish probably entered the lagoon during storm action and died due to the storm churning up bottom anoxic waters, or from being trapped and killed by hypersalinity. The fish possibly partially decomposed on the surface before the head detached and sank to the lagoon floor. The lack of scavengers due to the anoxic conditions prevented scattering of the individual elements, with denticles preserved along the labial surface of the dentigerous jaw bone, and jaw cartilage under the jaw bone.

在斯匹次卑尔根岛中达伦亚群中托达伦组上段中泥盆世fiskeklo øfta段发现了一种新的ischnacanthodian Serradentus armstrongi nov. gen. et sp.。该标本包括两对上下颌骨、颌软骨、牙齿或小齿轮、齿状锥体和尖齿。后两种特征以前只在早泥盆世的鱼龙形中发现过。地质条件符合底部缺氧的微咸回水泻湖沉积环境。这些鱼可能是在风暴期间进入泻湖的，由于风暴搅动了底部缺氧的水域，或者被困住并因高盐度而死亡。这条鱼可能部分在水面上腐烂，然后头部脱落并沉入泻湖的底部。由于缺氧条件，缺乏清除者阻止了单个元素的分散，齿状小齿沿着有牙颌骨的唇面被保存下来，颌骨下的颚软骨被保存下来。

引用次数: 7

Discovery of shale gas in organic-rich Jurassic successions, Adventdalen, Central Spitsbergen, Norway 挪威斯匹次卑尔根中部Adventdalen富有机质侏罗系页岩气的发现

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2020-01-09 DOI: 10.17850/njg007

S. Ohm, Leif Larsen, S. Olaussen, K. Senger, T. Birchall, T. Demchuk, A. Hodson, I. Johansen, Geir Ove Titlestad, D. Karlsen, A. Braathen

1Department of Arctic Geology, The University Centre in Svalbard, PO box 156, 9171 Longyearbyen, Norway. 2Department of Energy Resources, University of Stavanger, P.O. Box 8600 Forus, 4036 Stavanger Norway. 3KAPPA Engineering, Myklabergstien 15, N–4052 Røyneberg, Norway. 4Department of Geosciences, University of Oslo, PO Box 1047 Blindern, 0316 Oslo, Norway. 5RPS Group Inc, Chasewood Technology Park, 20405 Tomball Parkway, Building Two, Suite 200, Houston, Texas 77070–2618, USA. 6Institute for Energy Technology, Instituttveien 18, 2007 Kjeller, Norway. 7Gotic AS, P.O. Box 8034 Forus, 4068 Stavanger, Norway.

1斯瓦尔巴大学中心北极地质系，邮政信箱156，9171 Longyearbyen，挪威。2斯塔万格大学能源系，挪威斯塔万格市福鲁斯8600号邮政信箱。3KAPPA Engineering，Myklabergstien 15，N–4052 Røyneberg，挪威。4奥斯陆大学地球科学系，邮政信箱1047 Blindern，0316奥斯陆，挪威。5RPS集团公司，Chasewood科技园，20405 Tomball Parkway，Building Two，Suite 200，Houston，Texas 77070–2618，USA。6能源技术研究所，Instituttveien 182007 Kjeller，Norway。7 Gotic AS，邮政信箱8034 Forus，4068 Stavanger，挪威。

引用次数: 17

The Sortlandsundet Basin, Vesterålen, northern Norway: a Jurassic basin based on erratics, seismic mapping and regional correlations 挪威北部vester<s:1> len的Sortlandsundet盆地:一个基于不稳定、地震测绘和区域相关性的侏罗纪盆地

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2020-01-08 DOI: 10.17850/njg99-4-4

M. Smelror, R. Bøe, B. Davidsen, D. Ottesen

The Sortlandsundet Basin is a half-graben with Mesozoic sediments located in Sortlandsundet between Langøya and Hinnøya in Vesterålen. The basin is defined by the Hadselfjord Fault Zone in the southeast and by unconformable boundaries to Archaean to Palaeoproterozoic basement rocks to the northeast, northwest and southwest. The basin may have originated as an extensional basin and evolved as a transtensional basin in the Jurassic–Early Cretaceous. Sedimentary strata of probable Jurassic age within the basin are more than 400 m thick, with seismic reflectors dipping slightly to the southeast. Glacial-transported erratic blocks, assumed to derive from the Sortlandsundet Basin, are found along the shores of Sortlandsundet. The blocks comprise quartz-rich sedimentary rocks, varying from conglomerates to fine sandstones, representing terrestrial to shallow-marine deposits. Many of the erratic blocks contain common macroand microfossils of Middle and Late Jurassic age. A syn-tectonic depositional model for the Sortlandsundet Basin with correlations to the age-equivalent strata offshore Vesterålen (Ribban Basin) and on Andøya is discussed.

Sortlandsundet盆地位于vester地区Langøya和Hinnøya之间的Sortlandsundet，是一个含中生代沉积的半地堑。盆地东南部为哈德夫峡湾断裂带，东北部、西北部和西南部为太古宙至古元古代基底岩的不整合边界。侏罗纪—早白垩世，盆地可能起源于张拉盆地，演化为张拉盆地。盆地内侏罗系沉积地层厚度超过400 m，地震反射体略向东南倾斜。冰川运输的不稳定块状物，被认为是来自桑特兰桑德盆地，在桑特兰桑德海岸被发现。这些区块由富含石英的沉积岩组成，从砾岩到细砂岩不等，代表了陆相到浅海沉积。许多不稳定块体含有常见的中、晚侏罗世宏观和微观化石。讨论了Sortlandsundet盆地的同构造沉积模式，并与vester len (Ribban盆地)近海和Andøya上的年龄等效地层进行了对比。

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引用次数: 0

Caprock integrity of the Draupne Formation, Ling Depression, North Sea, Norway 挪威北海凌坳陷Draupne组盖层完整性

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2020-01-01 DOI: 10.17850/NJG100-4-2

R. Gabrielsen, E. Skurtveit, J. Faleide

引用次数: 2

A Miocene age for the Molo Formation, Norwegian Sea shelf off Vestfjorden, based on marine palynology 基于海洋孢粉学的挪威海大陆架Vestfjorden的Molo组中新世时代

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2019-12-10 DOI: 10.17850/njg99-3-6

K. Grøsfjeld, K. Dybkjær, T. Eidvin, F. Riis, E. Rasmussen, J. Knies

Seven side-wall core samples from the lower part of the Molo Formation in exploration well 6610/3–1 off Vestfjorden/Lofoten have been reanalysed for marine palynomorphs. Description of new species from other studies and access to reference successions from nearby sites with an independent chronostratigraphy have enabled a more reliable depositional age constraint for the Molo Formation in its northern distribution area than previously achieved. The new data (e.g., the lowest occurrence of the dinoflagellate cysts Barssidinium graminosum and Barssidinium pliocenicum and the highest occurrence of the dinoflagellate cysts Minisphaeridium latirictum and Operculodinium piaseckii) provide incontrovertible evidence for a Miocene age for the Molo Formation in well 6610/3–1. Our data suggest that the Molo Formation in well 6610/3–1 started to accumulate after erosional activity which took place between the late middle Miocene and the late Miocene. The data (especially the presence of the dinoflagellate cyst A. andalouisiensis andalousiensis, the co-occurrence of the dinoflagellate cysts Barssidinium evangelineae and M. latirictum and the presence of the acritarch L. lucifer) suggest that the Molo Formation in well 6610/3–1 started to accumulate at around 8.8 / 8.7 Ma. The sediments were deposited in a warm temperate, high-energy environment influenced by river discharge. During deposition, older sediments, particularly from the Paleogene, became extensively eroded. The erosion and rapid accumulation were probably associated with the combined effects of eustatic sea-level fall and uplift/updoming of the hinterland/coastal zone.

对Vestfjorden/Lofoten附近6610/3-1探井Molo组下部的7个侧壁岩心样品进行了海洋地貌分析。从其他研究中获得的新物种的描述，以及从附近地点获得的具有独立年代地层学的参考序列，使Molo组在其北部分布区域的沉积年龄约束比以前实现的更可靠。新资料(如最低的鞭毛藻囊Barssidinium graminosum和Barssidinium pliocenicum，最高的鞭毛藻囊Minisphaeridium latirictum和Operculodinium piaseckii)为6610/3-1井Molo组的中新世时代提供了无可争议的证据。研究表明，6610/3-1井的Molo组是在中中新世晚期至晚中新世的侵蚀活动后开始聚集的。这些资料(特别是A. andallouisiensis andalousiensis甲藻囊、Barssidinium evangelineae和M. latirictum甲藻囊的共存以及L. lucifer甲藻的存在)表明，6610/3-1井Molo组在8.8 / 8.7 Ma左右开始积累。沉积物沉积在暖温带，受河流流量影响的高能环境中。在沉积过程中，较老的沉积物，特别是古近纪的沉积物，被广泛侵蚀。侵蚀和快速堆积可能与海平面上升下降和腹地/海岸带隆升/隆升的综合作用有关。

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引用次数: 3

Burden of Disease and Current Management of Dementia with Lewy Bodies: A Literature Review. 路易体痴呆症的疾病负担和当前管理：文献综述。

IF 3.7 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2019-12-01 Epub Date: 2019-09-12 DOI: 10.1007/s40120-019-00154-7

Amir Abbas Tahami Monfared, Genevieve Meier, Richard Perry, Darren Joe

Introduction: A significant proportion of dementia is concretely estimated to be attributable to dementia with Lewy bodies (DLB)-one of the most common types of progressive dementia; however, there is a paucity of literature on this disease. We aimed to examine available evidence to gain a better understanding of its treatment landscape, clinical management, and disease burden.

Methods: A systematic literature review captured any DLB studies that report on randomised controlled trials (RCTs), epidemiology, disease progression, and economic data. An additional targeted literature review captured studies reporting on clinical management and quality of life (QoL) in this disease. Publication date was limited to 1 January 2007-26 March 2018, with the exception for RCTs, where no time restrictions were applied.

Findings: Of the 3486 studies initially identified, 55 studies were eligible for inclusion. The studies were mainly from Europe (n = 29), the USA (n = 9), and Japan (n = 8). Mini-Mental State Examination and Neuropsychiatric Inventory scores were the most commonly reported clinical outcomes in RCTs (n = 14). The most frequently identified interventions reported in RCTs were donepezil and memantine. Patients with DLB typically reported worse outcomes in relation to efficacy and safety, cognitive impairment, survival, and QoL compared with those with Alzheimer's disease (AD). Additionally, patients with DLB were associated with higher hospitalisation rates and cost of care. Furthermore, there is a reliance on a small number of consensus guidelines. Of these, only one set of guidelines (DLB Consortium) was developed specifically for DLB.

Conclusion: The paucity of data indicates an unmet need in this therapy area. Although several studies look into the clinical and pathological aspects of DLB, consensus guidelines and studies on healthcare utilisation in patients with dementia have largely focused on AD. Additionally, most of the findings were made in comparison with AD.

Funding: Eisai Inc.

导言：据具体估计，相当一部分痴呆症可归因于路易体痴呆症（DLB）--一种最常见的进行性痴呆症；然而，有关这种疾病的文献却很少。我们的目的是研究现有证据，以便更好地了解其治疗前景、临床管理和疾病负担：系统性文献综述收集了所有关于随机对照试验（RCT）、流行病学、疾病进展和经济数据的 DLB 研究报告。另外还进行了一次有针对性的文献综述，收集了有关该疾病的临床管理和生活质量（QoL）的研究报告。发表日期仅限于 2007 年 1 月 1 日至 2018 年 3 月 26 日，但研究性临床试验除外，对其没有时间限制：在初步确定的 3486 项研究中，有 55 项研究符合纳入条件。这些研究主要来自欧洲（29 项）、美国（9 项）和日本（8 项）。迷你精神状态检查和神经精神量表评分是研究性临床试验中最常报告的临床结果（14 项）。临床试验中最常见的干预措施是多奈哌齐和美金刚。与阿尔茨海默病（AD）患者相比，DLB 患者在疗效和安全性、认知障碍、存活率和 QoL 方面的结果通常较差。此外，DLB 患者的住院率和护理成本也较高。此外，目前仅有少数共识指南。其中，只有一套指南（DLB 联合会）是专门针对 DLB 制定的：数据的匮乏表明这一治疗领域的需求尚未得到满足。尽管有几项研究对 DLB 的临床和病理方面进行了调查，但有关痴呆症患者医疗保健使用情况的共识指南和研究主要集中在 AD 方面。此外，大多数研究结果都是与 AD 进行比较得出的：Eisai Inc.

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Sedimentological and palynological investigations of the Neoproterozoic Valdres Group 新元古代瓦尔德雷斯群的沉积学和孢粉学研究

IF 0.8 4区地球科学 Q2 Earth and Planetary Sciences

Norwegian Journal of Geology

Pub Date : 2019-10-30 DOI: 10.17850/njg99-4-2

Even Stokkebekk, Eirik N. Nordeng, H. Dypvik, Rikke Ø. Småkasin, Kathrine Sørhus, Wolfram M Kürschner

The Valdres Group (?Cryogenian) has been sedimentologically and stratigraphically studied and sampled in a few key sites (Grønsennknippa, Mellane, Ormtjernkampen). The search for fossils in selected formations has been the target and one identified acantomorphic acritarch was discovered along with other organic matter of more uncertain heritage. In addition to the diamictite/tillite present in the Valdres Group succession, this facilitates a correlation with the well-known Hedmark Group to the east.

Valdres群（？成冰纪）已在几个关键地点（Grønsennknippa、Mellane、Ormtjernkampen）进行了沉积学和地层学研究和取样。在选定的地层中寻找化石一直是目标，发现了一个已确定的棘皮形肢端化石，以及其他更不确定遗产的有机物。除了瓦尔德雷斯群演替中存在的杂岩/钛铁矿外，这有助于与东部著名的赫德马克群进行对比。

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