The Fennoscandian Shield Within Fennoscandia
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Changes in the Arctic: Background and Issues for Congress
Changes in the Arctic: Background and Issues for Congress Updated May 22, 2020 Congressional Research Service https://crsreports.congress.gov R41153 Changes in the Arctic: Background and Issues for Congress Summary The diminishment of Arctic sea ice has led to increased human activities in the Arctic, and has heightened interest in, and concerns about, the region’s future. The United States, by virtue of Alaska, is an Arctic country and has substantial interests in the region. The seven other Arctic states are Canada, Iceland, Norway, Sweden, Finland, Denmark (by virtue of Greenland), and Russia. The Arctic Research and Policy Act (ARPA) of 1984 (Title I of P.L. 98-373 of July 31, 1984) “provide[s] for a comprehensive national policy dealing with national research needs and objectives in the Arctic.” The National Science Foundation (NSF) is the lead federal agency for implementing Arctic research policy. Key U.S. policy documents relating to the Arctic include National Security Presidential Directive 66/Homeland Security Presidential Directive 25 (NSPD 66/HSPD 25) of January 9, 2009; the National Strategy for the Arctic Region of May 10, 2013; the January 30, 2014, implementation plan for the 2013 national strategy; and Executive Order 13689 of January 21, 2015, on enhancing coordination of national efforts in the Arctic. The office of the U.S. Special Representative for the Arctic has been vacant since January 20, 2017. The Arctic Council, created in 1996, is the leading international forum for addressing issues relating to the Arctic. The United Nations Convention on the Law of the Sea (UNCLOS) sets forth a comprehensive regime of law and order in the world’s oceans, including the Arctic Ocean. -
Assessment of Undiscovered Conventionally Recoverable Petroleum Resources of the Northwest European Region
U.S. GEOLOGICAL SURVEY CIRCULAR 922-A Assessment of Undiscovered Conventionally Recoverable Petroleum Resources of the Northwest European Region Assessment of Undiscovered Conventionally Recoverable Petroleum Resources of the North\Nest European Region By Charles D. Masters and H. Douglas Klemme U. S. G E 0 L 0 G I CAL SURVEY CIRCULAR 9 2 2- A Prepared in cooperation with Weeks Exploration Company under contract to the U.S. Geological Survey A resource assessment and a brief description of the petroleum geology, including play distribution, that accounts for the petroleum accumulation in the North Sea and adjoining areas 1984 Department of the Interior WILLIAM P. CLARK, Secretary U.S. Geological Survey Dallas L. Peck, Director Free on application to Distribution Branch, Text Products Section, U. S. Geological Survey, 604 South Pickett Street, Alexandria, VA 22304 CONTENTS Page Pref~--------------------------------------------------------------------- v Absttact-------------------------------------------------------------------- 1 Inbuduction ---------------------------------------------------------------- 1 Regional geology ------------------------------------------------------------- 2 Pettoleum geology ------------------------------------------------------------ 6 Resource assessment---------------------------------------------------------- 14 COmmen~ ------------------------------------------------------------------ 15 References cited -------------------------------------------------------------- 22 ILLUSTRATIONS Page FIGURE 1. Map -
GY 112 Lecture Notes D
GY 112 Lecture Notes D. Haywick (2006) 1 GY 112 Lecture Notes Archean Geology Lecture Goals: A) Time frame (the Archean and earlier) B) Rocks and tectonic elements (shield/platform/craton) C) Tectonics and paleogeography Textbook reference: Levin 7th edition (2003), Chapter 6; Levin 8th edition (2006), Chapter 8 A) Time frame Up until comparatively recently (start of the 20th century), most geologists focused their discussion of geological time on two eons; the “Precambrian” and the Phanerozoic. We now officially recognize 4 eons and the Precambrian is just used as a come-all term for all time before the Phanerozoic: Eon Time Phanerozoic 550 MA to 0 MA Proterozoic 2.5 GA to 550 MA Archean 3.96 GA to 2.5 GA Hadean 4.6 GA to 3.96 GA The “youngest” of these two new eons, the Archean, was first introduced by field geologists working in areas where very old rocks cropped out. One of these geologists was Sir William Logan (pictured at left; ess.nrcan.gc.ca ) one of the most respected geologists working with the Geological Survey of Canada. His study area was the Canadian Shield. Logan was able to identify two major types of rocks; 1) layered sedimentary and volcanic rocks and 2) highly metamorphosed granitic gneisses (see image at the top of the next page from http://www.trailcanada.com/images/canadian-shield.jpg). Logan found evidence that the gneisses mostly underlayed the layered rocks and hence, they had to be older than the layered rocks. The layered rocks were known to be Proterozoic in age. -
Periodicity of Rayleigh Phase Velocities Observed in Scandinavia
Originally published as: Mauerberger, A., Maupin, V., Gudmundsson, Ó., Tilmann, F. (2021): Anomalous azimuthal variations with 360° periodicity of Rayleigh phase velocities observed in Scandinavia. - Geophysical Journal International, 224, 3, 1684-1704. https://doi.org/10.1093/gji/ggaa553 Institutional Repository GFZpublic: https://gfzpublic.gfz‐potsdam.de/ Geophys. J. Int. (2021) 224, 1684–1704 doi: 10.1093/gji/ggaa553 Advance Access publication 2020 November 13 0GJI Seismology Anomalous azimuthal variations with 360◦ periodicity of Rayleigh phase velocities observed in Scandinavia Downloaded from https://academic.oup.com/gji/article/224/3/1684/6012847 by Bibliothek des Wissenschaftsparks Albert Einstein user on 12 February 2021 Alexandra Mauerberger ,1,2 Valerie´ Maupin ,3 Olafur´ Gudmundsson4 and Frederik Tilmann 1,2 1GFZ German Research Center for Geosciences, Geophysics, Telegrafenberg, 14473 Potsdam, Germany. E-mail: [email protected] 2Freie Universitat¨ Berlin, Institute of Geological Sciences, 12249 Berlin, Germany 3University of Oslo, CEED, 0371 Oslo, Norway 4 Uppsala University, Geocentrum, 752 36 Uppsala, Sweden Accepted 2020 November 13. Received 2020 November 6; in original form 2020 February 27 SUMMARY We use the recently deployed ScanArray network of broad-band stations covering most of Norway and Sweden as well as parts of Finland to analyse the propagation of Rayleigh waves in Scandinavia. Applying an array beamforming technique to teleseismic records from ScanArray and permanent stations in the study region, in total 159 stations with a typical station distance of about 70 km, we obtain phase velocities for three subregions, which collectively cover most of Scandinavia (excluding southern Norway). The average phase dispersion curves are similar for all three subregions. -
Ancient Fennoscandian Genomes Reveal Origin and Spread of Siberian Ancestry in Europe
ARTICLE DOI: 10.1038/s41467-018-07483-5 OPEN Ancient Fennoscandian genomes reveal origin and spread of Siberian ancestry in Europe Thiseas C. Lamnidis1, Kerttu Majander1,2,3, Choongwon Jeong1,4, Elina Salmela 1,3, Anna Wessman5, Vyacheslav Moiseyev6, Valery Khartanovich6, Oleg Balanovsky7,8,9, Matthias Ongyerth10, Antje Weihmann10, Antti Sajantila11, Janet Kelso 10, Svante Pääbo10, Päivi Onkamo3,12, Wolfgang Haak1, Johannes Krause 1 & Stephan Schiffels 1 1234567890():,; European population history has been shaped by migrations of people, and their subsequent admixture. Recently, ancient DNA has brought new insights into European migration events linked to the advent of agriculture, and possibly to the spread of Indo-European languages. However, little is known about the ancient population history of north-eastern Europe, in particular about populations speaking Uralic languages, such as Finns and Saami. Here we analyse ancient genomic data from 11 individuals from Finland and north-western Russia. We show that the genetic makeup of northern Europe was shaped by migrations from Siberia that began at least 3500 years ago. This Siberian ancestry was subsequently admixed into many modern populations in the region, particularly into populations speaking Uralic languages today. Additionally, we show that ancestors of modern Saami inhabited a larger territory during the Iron Age, which adds to the historical and linguistic information about the population history of Finland. 1 Department of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745 Jena, Germany. 2 Institute for Archaeological Sciences, Archaeo- and Palaeogenetics, University of Tübingen, 72070 Tübingen, Germany. 3 Department of Biosciences, University of Helsinki, PL 56 (Viikinkaari 9), 00014 Helsinki, Finland. -
Tectonic Regimes in the Baltic Shield During the Last 1200 Ma • a Review
Tectonic regimes in the Baltic Shield during the last 1200 Ma • A review Sven Åke Larsson ' ', Bva-L^na Tuliborq- 1 Department of Geology Chalmers University of Technology/Göteborij U^vjrsivy 2 Terralogica AB November 1993 TECTONIC REGIMES IN THE BALTIC SHIELD DURING THE LAST 1200 Ma - A REVIEW Sven Åke Larsson12, Eva-Lena Tullborg2 1 Department of Geology, Chalmers University of Technology/Göteborg University 2 Terralogica AB November 1993 This report concerns a study which was conducted for SKB. The conclusions and viewpoints presented in the report are those of the author(s) and do not necessarily coincide with those of the client. Information on SKB technical reports from 1977-1978 (TR 121), 1979 (TR 79-28), 1980 (TR 80-26), 1981 (TR 81-17), 1982 (TR 82-28), 1983 (TR 83-77), 1984 (TR 85-01), 1985 (TR 85-20), 1986 (TR 86-31), 1987 (TR 87-33), 1988 (TR 88-32),. 1989 (TR 89-40), 1990 (TR 90-46), 1991 (TR 91-64) and 1992 (TR 92-46) is available through SKB. ) TECTONIC REGIMES IN THE BALTIC SHIELD DURING THE LAST 1200 Ma - A REVIEW by Sven Åke Larson and Eva-Lena Tullborg Department of Geology, Chalmers University of Technology / Göteborg University & Terralogica AB Gråbo, November, 1993 Keywords: Baltic shield, Tectonicregimes. Upper Protero/.oic, Phanerozoic, Mag- matism. Sedimentation. Erosion. Metamorphism, Continental drift. Stress regimes. , ABSTRACT 1 his report is a review about tectonic regimes in the Baltic (Fennoscandian) Shield from the Sveeonorwegian (1.2 Ga ago) to the present. It also covers what is known about palaeostress during this period, which was chosen to include both orogenic and anorogenic events. -
The Horseshoe of Fennoscandia, Norway, Rein Midteng
The Horseshoe of Fennoscandia-A corridor for the long term survival of old-growth forest dependent species in Norway, Sweden and Finland. Rein Midteng, Asplan Viak. Norway. [email protected] 1.What is the Horseshoe of Fennoskandia? 2. What is its ecologial function? 3. Which subparts does it consist of? 4.Transboundary zones 5. How continuous and broad is the Horseshoe? 6. Key regions and areas in need of protection 7. Futher emphazis Un-protected old-growth forest in Pasvik 1.What is the Horseshoe of Fennoskandia? • Its a more or less continously corridor of old-growth forests from southern Finland/southeast Karealia to southern Norway/Sweden. • It consists of four subparts that are connected as a whole. These four subparts are although presented individually. In addition, it exists so called transboundary zones, which are “green” corridors with mostly continuously old-growth forests that stretch out from the Horseshoe. • Old-growth forests dominate the Horseshoe while in the rest of Fennoscandia culture forests dominate. • It consist of both protected and unprotected old-growth forests. • It includes a great variation of vegetationzones and foresttypes. • It is of major importance in the implementation of the Nagaya goals • It is of major importance for the preservation of old-growth forest species in Norway, Sweden, Finland and probably also in some parts of Russia. 2. What is its (ecologial) function? • It is a migrationzone east-west (since the last ice age), and the Fennoscandinavian countries share therefore to a large extent the same flora and fauna as Russia (low level of endemism). • It provides an exchange of species, individuals and genes to and forth in the Horseshoe. -
South and North Barents Triassic-Jurassic Total Petroleum System of the Russian Offshore Arctic
U. S. Department of the Interior U. S. Geological Survey South and North Barents Triassic-Jurassic Total Petroleum System of the Russian Offshore Arctic Paper Edition by Sandra J. Lindquist1 Open-File Report 99-50-N This report is preliminary and has not been reviewed for conformity with the U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 1999 1 Consulting Geologist, Contractor to U. S. Geological Survey, Denver, Colorado Page 1 of 16 South and North Barents Triassic-Jurassic Total Petroleum System of the Russian Offshore Arctic2 Sandra J. Lindquist, Consulting Geologist Contractor to the U.S. Geological Survey, Denver, CO October, 1999 FOREWORD This report was prepared as part of the World Energy Project of the U.S. Geological Survey. In the project, the world was divided into 8 regions and 937 geologic provinces. The provinces have been ranked according to the discovered oil and gas volumes within each (Klett and others, 1997). Then, 76 "priority" provinces (exclusive of the U.S. and chosen for their high ranking) and 26 "boutique" provinces (exclusive of the U.S. and chosen for their anticipated petroleum richness or special regional economic importance) were selected for appraisal of oil and gas resources. The petroleum geology of these priority and boutique provinces is described in this series of reports. A detailed report containing the assessment results will be available separately, if such results are not reported herein. The priority South Barents Basin Province ranks 35th in the world, exclusive of the U.S. -
Rutile Mineral Chemistry and Zr-In-Rutile Thermometry In
minerals Article Rutile Mineral Chemistry and Zr-in-Rutile Thermometry in Provenance Study of Albian (Uppermost Lower Cretaceous) Terrigenous Quartz Sands and Sandstones in Southern Extra-Carpathian Poland Jakub Kotowski * , Krzysztof Nejbert and Danuta Olszewska-Nejbert Faculty of Geology, University of Warsaw, Zwirki˙ i Wigury 93, 02-089 Warszawa, Poland; [email protected] (K.N.); [email protected] (D.O.-N.) * Correspondence: [email protected] Abstract: The geochemistry of detrital rutile grains, which are extremely resistant to weathering, was used in a provenance study of the transgressive Albian quartz sands in the southern part of extra-Carpathian Poland. Rutile grains were sampled from eight outcrops and four boreholes located on the Miechów, Szydłowiec, and Puławy Segments. The crystallization temperatures of the rutile grains, calculated using a Zr-in-rutile geothermometer, allowed for the division of the study area into three parts: western, central, and eastern. The western group of samples, located in the Citation: Kotowski, J.; Nejbert, K.; Miechów Segment, is characterized by a polymodal distribution of rutile crystallization temperatures ◦ ◦ ◦ Olszewska-Nejbert, D. Rutile Mineral (700–800 C; 550–600 C, and c. 900 C) with a significant predominance of high-temperature forms, Chemistry and Zr-in-Rutile and with a clear prevalence of metapelitic over metamafic rutile. The eastern group of samples, Thermometry in Provenance Study of corresponding to the Lublin Area, is monomodal and their crystallization temperatures peak at Albian (Uppermost Lower 550–600 ◦C. The contents of metapelitic to metamafic rutile in the study area are comparable. The Cretaceous) Terrigenous Quartz central group of rutile samples with bimodal distribution (550–600 ◦C and 850–950 ◦C) most likely Sands and Sandstones in Southern represents a mixing zone, with a visible influence from the western and, to a lesser extent, the eastern Extra-Carpathian Poland. -
Precambrian Plate Tectonics: Criteria and Evidence
VOL.. 16,16, No.No. 77 A PublicAtioN of the GeoloGicicAl Society of America JulyJuly 20062006 Precambrian Plate Tectonics: Criteria and Evidence Inside: 2006 Medal and Award Recipients, p. 12 2006 GSA Fellows Elected, p. 13 2006 GSA Research Grant Recipients, p. 18 Call for Geological Papers, 2007 Section Meetings, p. 30 Volume 16, Number 7 July 2006 cover: Magnetic anomaly map of part of Western Australia, showing crustal blocks of different age and distinct structural trends, juxtaposed against one another across major structural deformation zones. All of the features on this map are GSA TODAY publishes news and information for more than Precambrian in age and demonstrate that plate tectonics 20,000 GSA members and subscribing libraries. GSA Today was in operation in the Precambrian. Image copyright the lead science articles should present the results of exciting new government of Western Australia. Compiled by Geoscience research or summarize and synthesize important problems Australia, image processing by J. Watt, 2006, Geological or issues, and they must be understandable to all in the earth science community. Submit manuscripts to science Survey of Western Australia. See “Precambrian plate tectonics: editors Keith A. Howard, [email protected], or Gerald M. Criteria and evidence” by Peter A. Cawood, Alfred Kröner, Ross, [email protected]. and Sergei Pisarevsky, p. 4–11. GSA TODAY (ISSN 1052-5173 USPS 0456-530) is published 11 times per year, monthly, with a combined April/May issue, by The Geological Society of America, Inc., with offices at 3300 Penrose Place, Boulder, Colorado. Mailing address: P.O. Box 9140, Boulder, CO 80301-9140, USA. -
Thermochronology and Exhumation History of The
Thermochronology and Exhumation History of the Northeastern Fennoscandian Shield Since 1.9 Ga: Evidence From 40 Ar/ 39 Ar and Apatite Fission Track Data From the Kola Peninsula Item Type Article Authors Veselovskiy, Roman V.; Thomson, Stuart N.; Arzamastsev, Andrey A.; Botsyun, Svetlana; Travin, Aleksey V.; Yudin, Denis S.; Samsonov, Alexander V.; Stepanova, Alexandra V. Citation Veselovskiy, R. V., Thomson, S. N., Arzamastsev, A. A., Botsyun, S., Travin, A. V., Yudin, D. S., et al. (2019). Thermochronology and exhumation history of the northeastern Fennoscandian Shield since 1.9 Ga:evidence from 40Ar/39Ar and apatite fission track data from the Kola Peninsula. Tectonics, 38, 2317–2337.https:// doi.org/10.1029/2018TC005250 DOI 10.1029/2018tc005250 Publisher AMER GEOPHYSICAL UNION Journal TECTONICS Rights Copyright © 2019. American Geophysical Union. All Rights Reserved. Download date 01/10/2021 04:51:21 Item License http://rightsstatements.org/vocab/InC/1.0/ Version Final published version Link to Item http://hdl.handle.net/10150/634481 RESEARCH ARTICLE Thermochronology and Exhumation History of the 10.1029/2018TC005250 Northeastern Fennoscandian Shield Since 1.9 Ga: Key Points: 40 39 • Since 1.9 Ga, the NE Fennoscandia Evidence From Ar/ Ar and Apatite Fission was characterized by a slow exhumation (1‐2 m/Myr) Track Data From the Kola Peninsula • Total denudation of the NE Roman V. Veselovskiy1,2 , Stuart N. Thomson3 , Andrey A. Arzamastsev4,5 , Fennoscandia since 1.9 Ga did not 6 7,8 7,8 9 exceed ~3‐5km Svetlana Botsyun , Aleksey V. Travin , Denis S. Yudin , Alexander V. Samsonov , • The Kola part of Fennoscandia and Alexandra V. -
Mitochondrial Genome Diversity in the Central Siberian Plateau with Particular
bioRxiv preprint doi: https://doi.org/10.1101/656181; this version posted May 31, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Mitochondrial Genome Diversity in the Central Siberian Plateau with Particular Reference to Prehistory of Northernmost Eurasia S. V. Dryomov*,1, A. M. Nazhmidenova*,1, E. B. Starikovskaya*,1, S. A. Shalaurova1, N. Rohland2, S. Mallick2,3,4, R. Bernardos2, A. P. Derevianko5, D. Reich2,3,4, R. I. Sukernik1. 1 Laboratory of Human Molecular Genetics, Institute of Molecular and Cellular Biology, SBRAS, Novosibirsk, Russian Federation 2 Department of Genetics, Harvard Medical School, Boston, MA 02115, USA 3 Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA 4 Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA 5 Institute of Archaeology and Ethnography, SBRAS, Novosibirsk, Russian Federation Corresponding author: Rem Sukernik ([email protected]) * These authors contributed equally to this work. bioRxiv preprint doi: https://doi.org/10.1101/656181; this version posted May 31, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Abstract The Central Siberian Plateau was last geographic area in Eurasia to become habitable by modern humans after the Last Glacial Maximum (LGM).