IF 1 4区地球科学

Gff Pub Date : 2023-08-02 DOI: 10.1080/11035897.2023.2233575

Patrick Hänsel, S. Oehrl, Lena Ideström, Per Widerström, Carl J. Reddin, A. Munnecke

{"title":"Stable carbon and oxygen isotope geochemistry as provenance indicator for the picture stones on Gotland (Sweden)","authors":"Patrick Hänsel, S. Oehrl, Lena Ideström, Per Widerström, Carl J. Reddin, A. Munnecke","doi":"10.1080/11035897.2023.2233575","DOIUrl":"https://doi.org/10.1080/11035897.2023.2233575","url":null,"abstract":"ABSTRACT The picture stones from Gotland are one of the most famous and exceptional groups of monuments known from Swedish Prehistory. These carved memorial stones and their extraordinarily rich imagery are a unique source for the study of Late Iron and Viking Age culture and in particular Scandinavian pre-Christian religions. The Gotlandic picture stones are mainly made from the thickly layered limestones surrounding the reefs and bioherms of Gotland’s carbonate platform from the middle part of the Silurian (latest Llandovery to Ludlow, Telychian – Ludfordian). However, the exact origins of the picture stones’ raw materials on Gotland have remained undetermined. In this paper, we investigate the geological origin of the raw material by isotope geochemistry. Whereas the oxygen (δ18O) and strontium isotope ratio (87Sr/86Sr) were strongly altered by diagenesis the carbon isotope ratio (δ13C) is quite stable. Because the different geological units on Gotland show specific isotope signatures, the δ13C values from picture stones can be used to assign them to the respective geological unit, and thus to the source area of the raw material. This also allows for an estimation of transport distance minima between the raw material source area and the find place of each sampled picture stone. Most of the picture stones seem to be produced from local material with short transport distances, less than 10 km and only a few were transported at a far distance exceeding 10 km. In summary, the transport distance was dependent mostly on the local availability of picture-stone-suitable rocks.","PeriodicalId":55094,"journal":{"name":"Gff","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46677145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unusual cystoporate? bryozoan from the Upper Ordovician of Siljan District, Dalarna, central Sweden 不寻常的膀胱蒸发？瑞典中部达拉纳Siljan区上奥陶世苔藓虫

IF 1 4区地球科学

Gff Pub Date : 2023-08-01 DOI: 10.1080/11035897.2023.2223579

A. Ernst, Z. Tolokonnikova

引用次数: 0

U-Pb baddeleyite age for the Ottfjället Dyke Swarm, central Scandinavian Caledonides: new constraints on the timing of the Baltoscandian Dyke Swarm, opening of the Iapetus Ocean and Neoproterozoic glaciation of Baltica – comment on the inferred age of Neoproterozoic glaciation on Baltica – a reply 斯堪的纳维亚加里东尼德斯中部Ottfjället岩脉群的U-Pb锆石年龄:对波罗的海岩脉群、Iapetus洋的打开和新元古代波罗的海冰川形成时间的新限制——对新元古代波罗的海冰川形成年龄的评述

IF 1 4区地球科学

Gff Pub Date : 2023-07-25 DOI: 10.1080/11035897.2023.2233569

Risto A. Kumpulainen, Mike A. Hamilton, Ulf Söderlund, Johan Petter Nystuen

引用次数: 0

Late Paleoproterozoic deposition and Mesoproterozoic metamorphism of detrital material in the southernmost Baltic Sea region (Gdańsk IG1 borehole): monazite versus zircon and chemical versus isotopic age record 波罗的海最南部地区(Gdańsk IG1钻孔)晚古元古代沉积与中元古代变质作用:独居石与锆石、化学与同位素年龄记录

IF 1 4区地球科学

Gff Pub Date : 2023-06-15 DOI: 10.1080/11035897.2023.2205891

Dominik Gurba, Anna Grabarczyk-Gurba, E. Krzemińska

引用次数: 0

U-Pb baddeleyite age for the Ottfjället Dyke Swarm, central Scandinavian Caledonides: New constraints on Ediacaran opening of the Iapetus Ocean and glaciations on Baltica – a comment on the inferred age of Neoproterozoic glaciations 斯堪的纳维亚中部Caledonides Ottfjället堤群的U-Pb年龄:对伊迪亚卡拉纪Iapetus洋开放和波罗的海冰川作用的新限制——对新元古代冰川作用年龄推断的评论

IF 1 4区地球科学

Gff Pub Date : 2023-06-14 DOI: 10.1080/11035897.2023.2205893

A. Rice

引用次数: 3

Emendment to the term complex in: “Guide for geological nomenclature in Sweden” (Kumpulainen 2016) “瑞典地质命名指南”（Kumpulainen 2016）中对“复合体”一词的修订

IF 1 4区地球科学

Gff Pub Date : 2023-05-18 DOI: 10.1080/11035897.2023.2201321

U. Andersson, Nils Jansson, Linda M. Wickström, S. Bergman, R. Kumpulainen, M. Johnson, M. Olvmo, Stephen McLoughlin, M. Calner

引用次数: 0

Prehistory of an enigmatic mineral: hisingerite 一种神秘矿物的史前史：希闪长岩

IF 1 4区地球科学

Gff Pub Date : 2023-04-04 DOI: 10.1080/11035897.2023.2187079

D. Holtstam

引用次数: 0

Cobalt enrichment in some ores of the Bergslagen province, south central Sweden 瑞典中南部伯格斯拉根省部分矿石中的钴富集

IF 1 4区地球科学

Gff Pub Date : 2023-02-21 DOI: 10.1080/11035897.2023.2168046

E. Jonsson, K. Högdahl

{"title":"Cobalt enrichment in some ores of the Bergslagen province, south central Sweden","authors":"E. Jonsson, K. Högdahl","doi":"10.1080/11035897.2023.2168046","DOIUrl":"https://doi.org/10.1080/11035897.2023.2168046","url":null,"abstract":"ABSTRACT The presence of cobalt (Co) in sulphide deposits or sulphide-bearing iron oxide deposits in and around the Palaeoproterozoic Bergslagen ore province, south central Sweden, led to focused mining and extraction of this metal, particularly during the nineteenth century. Today, Co is considered a critical metal in the EU and among the more sought-after raw materials, not least due to its use in batteries for the rapidly increasing production of electric vehicles. Here we report new observations and data on Co concentrations in variably mineralised and not necessarily statistically representative samples from a suite of mainly skarn-hosted, at least locally, sulphide-dominated mineralisations from Bergslagen. While several localities that exhibit substantial Co concentrations represent deposits previously known to carry this metal (generally in a field/district or specifically in a mine), the majority are from mines or prospects in which the presence of Co have been hitherto unknown. Several of them share the enrichment of, e.g., Co and Cu, but the overall picture is one of more complex interrelations between the variable metal endowments in the known occurrences of Co in this province. While representing a modest dataset, our new observations complement previously available information on the occurrence of Co in Bergslagen and highlights both the need for, and potential of, new and more detailed studies on the distribution, mineralogy and origin of Co as well as other critical or near-critical metals in this and other ore provinces in Sweden.","PeriodicalId":55094,"journal":{"name":"Gff","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46238128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solstad, a Co-Se-bearing copper ore in the Västervik quartzites, Sweden 瑞典Västervik石英岩中的一种含钴硒铜矿石

IF 1 4区地球科学

Gff Pub Date : 2022-12-15 DOI: 10.1080/11035897.2022.2147214

K. Billström, J. Söderhielm, C. Broman, K. Sundblad

{"title":"Solstad, a Co-Se-bearing copper ore in the Västervik quartzites, Sweden","authors":"K. Billström, J. Söderhielm, C. Broman, K. Sundblad","doi":"10.1080/11035897.2022.2147214","DOIUrl":"https://doi.org/10.1080/11035897.2022.2147214","url":null,"abstract":"ABSTRACT\u0000 The Solstad copper deposit, located in SE Sweden, is hosted by a quartz-rich rock sliver surrounded by a granite belonging to the 1.8 Ga Transscandinavian Igneous Belt. Ore petrographic studies have revealed a number of previously unrecognized opaque phases, including several Co phases, selenides and tellurides. Based on an in situ U-Pb investigation of zircons from a mineralized sample, it is suggested that zircons have a detrital origin and that the quartz-rich host rock is a xenolith belonging to the c. 1.88–1.86 Ga Västervik quartzite formation. A low-radiogenic galena sample implies that the source for the metals in the ore has a primitive origin, probably the basaltic lavas (now amphibolites) that are intercalated in the Västervik quartzite. Fluid inclusion studies in quartz distinguish four distinct ore fluids: (1) a hypersaline halite-bearing aqueous fluid related to an early (1.85–1.86 Ga) chalcopyrite depositional stage, (2) a subsequent CO2-rich fluid, that deposited native gold, tellurides, selenides and bismuthinite, developed (at ≥1.8 Ga) as a result of a phase separation, (3), a moderate- to high-salinity aqueous fluid did also develop at this event and led to the deposition of bornite and (4) a concluding, low-salinity aqueous fluid stage (at ≤1.8 Ga) caused oxidation to covelline and digenite of previously formed phases. It is proposed that the Solstad deposit and other Cu ± Co-rich sulphide (± magnetite) occurrences in the Västervik region along the southernmost margin of the 1.9–1.8 Ga Svecofennian Domain, represent a distinct ore type associated with quartzites and amphibolites.","PeriodicalId":55094,"journal":{"name":"Gff","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41410035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrothermal alteration, lithogeochemical marker units and vectors towards mineralisation at the Svärdsjö Zn-Pb-Cu deposit, Bergslagen, Sweden 瑞典Bergslagen Svärdsjö Zn-Pb-Cu矿床热液蚀变、岩石地球化学标志单元及成矿方向

IF 1 4区地球科学

Gff Pub Date : 2022-10-03 DOI: 10.1080/11035897.2022.2120065

Anton Fahlvik, T. C. Kampmann, N. Jansson

{"title":"Hydrothermal alteration, lithogeochemical marker units and vectors towards mineralisation at the Svärdsjö Zn-Pb-Cu deposit, Bergslagen, Sweden","authors":"Anton Fahlvik, T. C. Kampmann, N. Jansson","doi":"10.1080/11035897.2022.2120065","DOIUrl":"https://doi.org/10.1080/11035897.2022.2120065","url":null,"abstract":"ABSTRACT The Svärdsjö Zn-Pb-Cu deposit is situated in the heavily mineralised Bergslagen lithotectonic unit of the Fennoscandian shield, south-central Sweden. Intense hydrothermal alteration followed by a strong overprint by deformation and metamorphism during the Svecokarelian orogeny complicate interpretation of the local geology. Integration of whole-rock lithogeochemical and petrographic methods has allowed the mainly dacitic volcanic host succession and effects of ore-related hydrothermal alteration to be characterised. Mineralisation is hosted by 2–15 m thick, commonly skarn-altered dolomitic marble interbeds. Zones of strong–intense hydrothermal chlorite-sericite alteration envelop the marble units, recording mass gains of Fe and Mg, as well as Na depletion. Minerals such as cordierite, anthophyllite and sillimanite formed in these rocks during regional metamorphism. Mineralisation via sub-seafloor replacement is suggested for the deposit based on alteration zoning and the irregular, stratabound, marble-hosted style of sulphide lenses. It is inferred that mineralisation formed via neutralisation of hot, acidic metalliferous fluids. Geochemically and lithologically distinct units adjacent to the mineralised zones can serve as marker units to aid further exploration in the area. Mass change calculations reveal that Fe and Mg enrichment, as well as Na depletion exhibit detectable changes extending up to 100 m from the mineralised lenses, providing exploration vectors.","PeriodicalId":55094,"journal":{"name":"Gff","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49230282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

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