The Earth for the Well-Being of Future Generations and to Promote Science-Based Solutions for Earth Related Problems, Including ‘Earth Science Education’
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Do Gssps Render Dual Time-Rock/Time Classification and Nomenclature Redundant?
Do GSSPs render dual time-rock/time classification and nomenclature redundant? Ismael Ferrusquía-Villafranca1 Robert M. Easton2 and Donald E. Owen3 1Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, México, DF, MEX, 45100, e-mail: [email protected] 2Ontario Geological Survey, Precambrian Geoscience Section, 933 Ramsey Lake Road, B7064 Sudbury, Ontario P3E 6B5, e-mail: [email protected] 3Department of Geology, Lamar University, Beaumont, Texas 77710, e-mail: [email protected] ABSTRACT: The Geological Society of London Proposal for “…ending the distinction between the dual stratigraphic terminology of time-rock units (of chronostratigraphy) and geologic time units (of geochronology). The long held, but widely misunderstood distinc- tion between these two essentially parallel time scales has been rendered unnecessary by the adoption of the global stratotype sections and points (GSSP-golden spike) principle in defining intervals of geologic time within rock strata.” Our review of stratigraphic princi- ples, concepts, models and paradigms through history clearly shows that the GSL Proposal is flawed and if adopted will be of disservice to the stratigraphic community. We recommend the continued use of the dual stratigraphic terminology of chronostratigraphy and geochronology for the following reasons: (1) time-rock (chronostratigraphic) and geologic time (geochronologic) units are conceptually different; (2) the subtended time-rock’s unit space between its “golden spiked-marked” -
Asturica Augusta
Today, as yesterday, communication and mobility are essential in the configuration of landscapes, understood as cultural creations. The dense networks of roads that nowadays crisscross Europe have a historical depth whose roots lie in its ancient roads. Under the might of Rome, a network of roads was designed for the first time that was capable of linking points very far apart and of organizing the lands they traversed. They represent some of the Empire’s landscapes and are testimony to the ways in which highly diverse regions were integrated under one single power: Integration Water and land: Integration Roads of conquest The rural world of the limits ports and trade of the mountains Roads of conquest The initial course of the roads was often marked by the Rome army in its advance. Their role as an instrument of control over conquered lands was a constant, with soldiers, orders, magistrates, embassies and emperors all moving along them. Alesia is undoubtedly one of the most emblematic landscapes of the war waged by Rome’s legions against the peoples that inhabited Europe. Its material remains and the famous account by Caesar, the Gallic Wars, have meant that Alesia has been recognized for two centuries now as a symbol of the expansion of Rome and the resistance of local communities. Alesia is the famous battle between Julius Caesar and Vercingetorix, the Roman army against the Gaulish tribes. The siege of Alesia took place in 52 BC, but its location was not actually discovered until the 19th century thanks to archeological research! Located on the site of the battle itself, in the centre of France, in Burgundy, in the village of Alise-Sainte-Reine, the MuseoParc Alesia opened its doors in 2012 in order to provide the key to understanding this historical event and the historical context, in order to make history accessible to the greatest number of people. -
Skeletonized Microfossils from the Lower–Middle Cambrian Transition of the Cantabrian Mountains, Northern Spain
Skeletonized microfossils from the Lower–Middle Cambrian transition of the Cantabrian Mountains, northern Spain SÉBASTIEN CLAUSEN and J. JAVIER ÁLVARO Clausen, S. and Álvaro, J.J. 2006. Skeletonized microfossils from the Lower–Middle Cambrian transition of the Cantabrian Mountains, northern Spain. Acta Palaeontologica Polonica 51 (2): 223–238. Two different assemblages of skeletonized microfossils are recorded in bioclastic shoals that cross the Lower–Middle Cambrian boundary in the Esla nappe, Cantabrian Mountains. The uppermost Lower Cambrian sedimentary rocks repre− sent a ramp with ooid−bioclastic shoals that allowed development of protected archaeocyathan−microbial reefs. The shoals yield abundant debris of tube−shelled microfossils, such as hyoliths and hyolithelminths (Torellella), and trilobites. The overlying erosive unconformity marks the disappearance of archaeocyaths and the Iberian Lower–Middle Cambrian boundary. A different assemblage occurs in the overlying glauconitic limestone associated with development of widespread low−relief bioclastic shoals. Their lowermost part is rich in hyoliths, hexactinellid, and heteractinid sponge spicules (Eiffelia), chancelloriid sclerites (at least six form species of Allonnia, Archiasterella, and Chancelloria), cambroclaves (Parazhijinites), probable eoconchariids (Cantabria labyrinthica gen. et sp. nov.), sclerites of uncertain af− finity (Holoplicatella margarita gen. et sp. nov.), echinoderm ossicles and trilobites. Although both bioclastic shoal com− plexes represent similar high−energy conditions, the unconformity at the Lower–Middle Cambrian boundary marks a drastic replacement of microfossil assemblages. This change may represent a real community replacement from hyolithelminth−phosphatic tubular shells to CES (chancelloriid−echinoderm−sponge) meadows. This replacement coin− cides with the immigration event based on trilobites previously reported across the boundary, although the partial infor− mation available from originally carbonate skeletons is also affected by taphonomic bias. -
Soils in the Geologic Record
in the Geologic Record 2021 Soils Planner Natural Resources Conservation Service Words From the Deputy Chief Soils are essential for life on Earth. They are the source of nutrients for plants, the medium that stores and releases water to plants, and the material in which plants anchor to the Earth’s surface. Soils filter pollutants and thereby purify water, store atmospheric carbon and thereby reduce greenhouse gasses, and support structures and thereby provide the foundation on which civilization erects buildings and constructs roads. Given the vast On February 2, 2020, the USDA, Natural importance of soil, it’s no wonder that the U.S. Government has Resources Conservation Service (NRCS) an agency, NRCS, devoted to preserving this essential resource. welcomed Dr. Luis “Louie” Tupas as the NRCS Deputy Chief for Soil Science and Resource Less widely recognized than the value of soil in maintaining Assessment. Dr. Tupas brings knowledge and experience of global change and climate impacts life is the importance of the knowledge gained from soils in the on agriculture, forestry, and other landscapes to the geologic record. Fossil soils, or “paleosols,” help us understand NRCS. He has been with USDA since 2004. the history of the Earth. This planner focuses on these soils in the geologic record. It provides examples of how paleosols can retain Dr. Tupas, a career member of the Senior Executive Service since 2014, served as the Deputy Director information about climates and ecosystems of the prehistoric for Bioenergy, Climate, and Environment, the Acting past. By understanding this deep history, we can obtain a better Deputy Director for Food Science and Nutrition, and understanding of modern climate, current biodiversity, and the Director for International Programs at USDA, ongoing soil formation and destruction. -
International Chronostratigraphic Chart
INTERNATIONAL CHRONOSTRATIGRAPHIC CHART www.stratigraphy.org International Commission on Stratigraphy v 2015/01 numerical numerical numerical Eonothem numerical Series / Epoch Stage / Age Series / Epoch Stage / Age Series / Epoch Stage / Age Erathem / Era System / Period GSSP GSSP age (Ma) GSSP GSSA EonothemErathem / Eon System / Era / Period EonothemErathem / Eon System/ Era / Period age (Ma) EonothemErathem / Eon System/ Era / Period age (Ma) / Eon GSSP age (Ma) present ~ 145.0 358.9 ± 0.4 ~ 541.0 ±1.0 Holocene Ediacaran 0.0117 Tithonian Upper 152.1 ±0.9 Famennian ~ 635 0.126 Upper Kimmeridgian Neo- Cryogenian Middle 157.3 ±1.0 Upper proterozoic ~ 720 Pleistocene 0.781 372.2 ±1.6 Calabrian Oxfordian Tonian 1.80 163.5 ±1.0 Frasnian 1000 Callovian 166.1 ±1.2 Quaternary Gelasian 2.58 382.7 ±1.6 Stenian Bathonian 168.3 ±1.3 Piacenzian Middle Bajocian Givetian 1200 Pliocene 3.600 170.3 ±1.4 Middle 387.7 ±0.8 Meso- Zanclean Aalenian proterozoic Ectasian 5.333 174.1 ±1.0 Eifelian 1400 Messinian Jurassic 393.3 ±1.2 7.246 Toarcian Calymmian Tortonian 182.7 ±0.7 Emsian 1600 11.63 Pliensbachian Statherian Lower 407.6 ±2.6 Serravallian 13.82 190.8 ±1.0 Lower 1800 Miocene Pragian 410.8 ±2.8 Langhian Sinemurian Proterozoic Neogene 15.97 Orosirian 199.3 ±0.3 Lochkovian Paleo- Hettangian 2050 Burdigalian 201.3 ±0.2 419.2 ±3.2 proterozoic 20.44 Mesozoic Rhaetian Pridoli Rhyacian Aquitanian 423.0 ±2.3 23.03 ~ 208.5 Ludfordian 2300 Cenozoic Chattian Ludlow 425.6 ±0.9 Siderian 28.1 Gorstian Oligocene Upper Norian 427.4 ±0.5 2500 Rupelian Wenlock Homerian -
Geologic Time – Part I - Practice Questions and Answers Revised October 2007
Geologic Time – Part I - Practice Questions and Answers Revised October 2007 1. The study of the spatial and temporal relationships between bodies of rock is called ____________________. 2. The geological time scale is the ____________ framework in which geologists view Earth history. 3. Both _________________ and absolute scales are included in the geological time scale. 4. Beds represent a depositional event. They are _________ 1 cm in thickness. 5. Laminations are similar to beds but are ___________ 1 cm in thickness. 6. The idea that most beds are laid down horizontally or nearly so is called the (a) Principle of Original Continuity (b) Principle of Fossil Succession (c) Principle of Cross-Cutting Relationships (d) Principle of Original Horizontality (e) Principle of Superposition 7. The idea that beds extend laterally in three dimensions until they thin to zero thickness is called the (a) Principle of Cross-Cutting Relationships (b) Principle of Original Horizontality (c) Principle of Original Continuity (d) Principle of Fossil Succession (e) Principle of Superposition 8. The idea that younger beds are deposited on top of older beds is called the (a) Principle of Original Horizontality (b) Principle of Fossil Succession (c) Principle of Cross-Cutting Relationships (d) Principle of Original Continuity (e) Principle of Superposition 9. The idea that a dike transecting bedding must be younger than the bedding it crosses is called the (a) Principle of Original Horizontality (b) Principle of Original Continuity (c) Principle of Fossil Succession (d) Principle of Cross-Cutting Relationships (e) Principle of Superposition 10. The idea that fossil content will change upward within a formation is called the (a) Principle of Cross-Cutting Relationships (b) Principle of Original Horizontality (c) Principle of Fossil Succession (d) Principle of Original Continuity (e) Principle of Superposition 11. -
Connectivity Study in Northwest Spain: Barriers, Impedances, and Corridors
sustainability Article Connectivity Study in Northwest Spain: Barriers, Impedances, and Corridors Enrique Valero, Xana Álvarez * and Juan Picos AF4 Research Group, Department of Natural Resources and Environmental Engineering, Forestry Engineering College, University of Vigo, Campus A Xunqueira, s/n, 36005 Pontevedra, Spain; [email protected] (E.V.); [email protected] (J.P.) * Correspondence: [email protected]; Tel.: +34-986-801-959 Received: 9 August 2019; Accepted: 14 September 2019; Published: 19 September 2019 Abstract: Functional connectivity between habitats is a fundamental quality for species dispersal and genetic exchange throughout their distribution range. Brown bear populations in Northwest Spain comprise around 200 individuals separated into two sub-populations that are very difficult to connect. We analysed the fragmentation and connectivity for the Ancares-Courel Site of Community Importance (SCI) and its surroundings, including the distribution area for this species within Asturias and in the northwest of Castile and León. The work analysed the territory’s connectivity by using Geographic Information Systems (GIS). The distance-cost method was used to calculate the least-cost paths with Patch Matrix. The Conefor Sensinode software calculated the Integral Connectivity Index and the Connectivity Probability. Locating the least-cost paths made it possible to define areas of favourable connectivity and to identify critical areas, while the results obtained from the connectivity indices led to the discovery of habitat patches that are fundamental for maintaining connectivity within and between different spaces. Three routes turned out to be the main ones connecting the northern (Ancares) and southern (Courel) areas of the SCI. Finally, this work shows the importance of conserving natural habitats and the biology, migration, and genetic exchange of sensitive species. -
Wray Wind Energy Project Environmental Assessment for Pre-Approval Review DOE/EA - 1884
Wray Wind Energy Project Environmental Assessment For Pre-Approval Review DOE/EA - 1884 Yuma County, Colorado U. S. Department of Energy Western Area Power Administration February 2012 Wray Wind Energy Project Environmental Assessment For Pre-Approval Review DOE/EA - 1884 Yuma County, Colorado U. S. Department of Energy Western Area Power Administration February 2012 THIS PAGE INTENTIONALLY BLANK Table of Contents TABLE OF CONTENTS 1.0 INTRODUCTION ................................................................................................................. 1-1 1.1 BACKGROUND ................................................................................................................................. 1.1-1 1.2 PURPOSE AND NEED ........................................................................................................................ 1.2-1 1.2.1 Invenergy’s Purpose and Need .............................................................................................. 1.2-1 1.2.2 Western’s Purpose and Need ................................................................................................. 1.2-1 1.3 FEDERAL ENVIRONMENTAL PROCESS AND DECISIONS TO BE MADE ............................................... 1.3-2 1.4 PUBLIC PARTICIPATION ................................................................................................................... 1.4-2 1.5 OTHER AUTHORIZATIONS ................................................................................................................ 1.5-3 2.0 DESCRIPTION -
Iberian Forests
IBERIAN FORESTS STRUCTURE AND DYNAMICS OF THE MAIN FORESTS IN THE IBERIAN PENINSULA PABLO J. HIDALGO MATERIALES PARA LA DOCENCIA [144] 2015 © Universidad de Huelva Servicio de Publicaciones © Los Autores Maquetación BONANZA SISTEMAS DIGITALES S.L. Impresión BONANZA SISTEMAS DIGITALES S.L. I.S.B.N. 978-84-16061-51-8 IBERIAN FORESTS. PABLO J. HIDALGO 3 INDEX 1. Physical Geography of the Iberian Peninsula ............................................................. 5 2. Temperate forest (Atlantic forest) ................................................................................ 9 3. Riparian forest ............................................................................................................. 15 4. Mediterranean forest ................................................................................................... 17 5. High mountain forest ................................................................................................... 23 Bibliography ..................................................................................................................... 27 Annex I. Iberian Forest Species ...................................................................................... 29 IBERIAN FORESTS. PABLO J. HIDALGO 5 1. PHYSICAL GEOGRAPHY OF THE IBERIAN PENINSULA. 1.1. Topography: Many different mountain ranges at high altitudes. Two plateaus 800–1100 m a.s.l. By contrast, many areas in Europe are plains with the exception of several mountain ran- ges such as the Alps, Urals, Balkans, Apennines, Carpathians, -
PHANEROZOIC and PRECAMBRIAN CHRONOSTRATIGRAPHY 2016
PHANEROZOIC and PRECAMBRIAN CHRONOSTRATIGRAPHY 2016 Series/ Age Series/ Age Erathem/ System/ Age Epoch Stage/Age Ma Epoch Stage/Age Ma Era Period Ma GSSP/ GSSA GSSP GSSP Eonothem Eon Eonothem Erathem Period Eonothem Period Eon Era System System Eon Erathem Era 237.0 541 Anthropocene * Ladinian Ediacaran Middle 241.5 Neo- 635 Upper Anisian Cryogenian 4.2 ka 246.8 proterozoic 720 Holocene Middle Olenekian Tonian 8.2 ka Triassic Lower 249.8 1000 Lower Mesozoic Induan Stenian 11.8 ka 251.9 Meso- 1200 Upper Changhsingian Ectasian 126 ka Lopingian 254.2 proterozoic 1400 “Ionian” Wuchiapingian Calymmian Quaternary Pleisto- 773 ka 259.8 1600 cene Calabrian Capitanian Statherian 1.80 Guada- 265.1 Proterozoic 1800 Gelasian Wordian Paleo- Orosirian 2.58 lupian 268.8 2050 Piacenzian Roadian proterozoic Rhyacian Pliocene 3.60 272.3 2300 Zanclean Kungurian Siderian 5.33 Permian 282.0 2500 Messinian Artinskian Neo- 7.25 Cisuralian 290.1 Tortonian Sakmarian archean 11.63 295.0 2800 Serravallian Asselian Meso- Miocene 13.82 298.9 r e c a m b i n P Neogene Langhian Gzhelian archean 15.97 Upper 303.4 3200 Burdigalian Kasimovian Paleo- C e n o z i c 20.44 306.7 Archean archean Aquitanian Penn- Middle Moscovian 23.03 sylvanian 314.6 3600 Chattian Lower Bashkirian Oligocene 28.1 323.2 Eoarchean Rupelian Upper Serpukhovian 33.9 330.9 4000 Priabonian Middle Visean 38.0 Carboniferous 346.7 Hadean (informal) Missis- Bartonian sippian Lower Tournaisian Eocene 41.0 358.9 ~4560 Lutetian Famennian 47.8 Upper 372.2 Ypresian Frasnian Units of the international Paleogene 56.0 382.7 Thanetian Givetian chronostratigraphic scale with 59.2 Middle 387.7 Paleocene Selandian Eifelian estimated numerical ages. -
Potential Range and Corridors for Brown Bears
POTENTIALRANGE AND CORRIDORSFOR BROWNBEARS INTHE EASTERN ALPS, ITALY LUIGIBOITANI, Department of Animaland HumanBiology, Viale Universita 32,00185-Roma, Italy,email: boitani @ pan.bio.uniromal .it PAOLOCIUCCI, Department of Animaland HumanBiology, Viale Universita 32,00185-Roma, Italy,email: ciucci@ pan.bio.uniromal .it FABIOCORSI, Istituto Ecologia Applicata, Via Spallanzani 32,00161 -Roma,Italy, email: corsi @ pan.bio.uniromal .it EUGENIODUPRE', Istituto Nazionale Fauna Selvatica, Via Ca Fornacetta,40064-Ozzano Emilia, Italy, email: infseuge@ iperbole.bologna.it Abstract: Although several techniqueshave been used to explore the spatialfeatures of brownbear (Ursus arctos) range (e.g., potentialdistribution ranges,linkages between isolated sub-populations, and analyses of habitatsuitability), quality and quantity of datahave often constrainedthe usefulness of the results.We used 12 environmentalvariables to identifypotentially suitable areas for bears in the Italianpart of the EasternAlps. We usedMahalanobis distancestatistic as a relativeindex of the environmentalquality of the studyarea by calculatingfor eachpixel (250 meters)the distancefrom the centroid of the environmentalconditions of 100 locationsrandomly selected within known bear ranges. We used differentlevels of this suitabilityindex to identify potentialoptimal and sub-optimal areas and their interconnecting corridors. The model identified4 majorareas of potentialbear presence having a total size of about 10,850 km2.Assuming functionalconnectivity among the areasand mean density -
Asturias (Northern Spain) As Case Study
Celts, Collective Identity and Archaeological Responsibility: Asturias (Northern Spain) as case study David González Álvarez, Carlos Marín Suárez Abstract Celtism was introduced in Asturias (Northern Spain) as a source of identity in the 19th century by the bourgeois and intellectual elite which developed the Asturianism and a regionalist political agenda. The archaeological Celts did not appear until Franco dictatorship, when they were linked to the Iron Age hillforts. Since the beginning of Spanish democracy, in 1978, most of the archaeologists who have been working on Asturian Iron Age have omit- ted ethnic studies. Today, almost nobody speaks about Celts in Academia. But, in the last years the Celtism has widespread on Asturian society. Celts are a very important political reference point in the new frame of Autonomous regions in Spain. In this context, archaeologists must to assume our responsibility in order of clarifying the uses and abuses of Celtism as a historiographical myth. We have to transmit the deconstruction of Celtism to society and we should be able to present alternatives to these archaeological old discourses in which Celtism entail the assumption of an ethnocentric, hierarchical and androcentric view of the past. Zusammenfassung Der Keltizismus wurde in Asturien (Nordspanien) als identitätsstiftende Ressource im 19. Jahrhundert durch bürgerliche und intellektuelle Eliten entwickelt, die Asturianismus und regionalistische politische Ziele propagierte. Die archäologischen Kelten erschienen allerdings erst während der Franco-Diktatur, während der sie mit den eisen- zeitlichen befestigten Höhensiedlungen verknüpft wurden. Seit der Einführung der Demokratie in Spanien im Jahr 1978 haben die meisten Archäologen, die über die asturische Eisenzeit arbeiten, ethnische Studien vernachlässigt.