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Redalyc.Sr, C and O Isotope Composition of Marbles from The
Geologica Acta: an international earth science journal ISSN: 1695-6133 [email protected] Universitat de Barcelona España Murra, J.A.; Baldo, E.G.; Galindo, C.; Casquet, C.; Pankhurst, R.J.; Rapela, C.W.; Dahlquist, J. Sr, C and O isotope composition of marbles from the Sierra de Ancasti, Eastern Sierras Pampeanas, Argentina: age and constraints for the Neoproterozoic-Lower Paleozoic evolution of the proto- Gondwana margin Geologica Acta: an international earth science journal, vol. 9, núm. 1, marzo, 2011, pp. 79-92 Universitat de Barcelona Barcelona, España Available in: http://www.redalyc.org/articulo.oa?id=50522124008 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Geologica Acta, Vol.9, Nº 1, March 2011, 79-92 DOI: 10.1344/105.000001645 Available online at www.geologica-acta.com Sr, C and O isotope composition of marbles from the Sierra de Ancasti, Eastern Sierras Pampeanas, Argentina: age and constraints for the Neoproterozoic–Lower Paleozoic evolution of the proto-Gondwana margin 1 1 2 2 3 4 1 J.A. MURRA E.G. BALDO C. GALINDO C. CASQUET R.J. PANKHURST C.W. RAPELA J. DAHLQUIST 1 CICTERRA (Universidad Nacional de Córdoba - Conicet) Av. Vélez Sarsfield 1611, 5016 Córdoba, Argentina. Murra E-mail: [email protected] Baldo E-mail: [email protected] Dahlquist E-mail: [email protected] 2 Departamento. Petrología y Geoquímica Facultad de Ciencias Geológicas, Inst. -
Buy Parodia Leninghausii - Cactus Plant Online at Nurserylive | Best Plants at Lowest Price
Buy parodia leninghausii - cactus plant online at nurserylive | Best plants at lowest price Parodia leninghausii - Cactus Plant Parodia leninghausii or the Yellow Tower Cactus is an interesting clustering cactus that has round columnar stems that are coated in yellow/light brown spines that are generally harmless. Rating: Not Rated Yet Price Variant price modifier: Base price with tax Price with discount ?499 Salesprice with discount Sales price ?499 Sales price without tax ?499 Discount Tax amount Ask a question about this product Description With this purchase you will get: 01 Parodia leninghausii Plant 01 3 inch Grower Round Plastic Pot (Black) Description for Parodia leninghausii 1 / 3 Buy parodia leninghausii - cactus plant online at nurserylive | Best plants at lowest price Plant height: 2 - 5 inches (5 - 13 cm) Plant spread: 2 - 4 inches (5 - 11 cm) Species is appreciated because of the long harmless golden spines. The young plants are globular, then columnar up to 1m tall, 12 cm diameter and about 30 ribs. Old plants cluster from the base. Flowers are yellow, 5 cm diameter, at the top of the plants, but only if adult (at least 20 cm tall) It produces very attractive, yellow, silky textured, funnel-shaped flowers in summer and is very popular even though it will take around five years to produce its first flowers. They start off having a spherical shape but become more columnar as they age and will naturally cluster from the base. Good for xeriscape and gravel gardens but perhaps best suited to growing in containers where they can be brought indoors in winter. -
Cactaceae) Ve Výuce Biologie Na Středních Školách
UNIVERZITA PALACKÉHO V OLOMOUCI PŘÍRODOVĚDĚCKÁ FAKULTA KATEDRA BOTANIKY Čeleď kaktusovité (Cactaceae) ve výuce biologie na středních školách DIPLOMOVÁ PRÁCE Bc. Adéla Gorová Biologie N1501, Biologie – Geografie Prezenční studium Vedoucí práce: Mgr. Martina Oulehlová, Ph.D. Olomouc 2020 Prohlášení Prohlašuji, že předložená práce je mým původním autorským dílem, které jsem vypracovala samostatně. Veškerou literaturu a další zdroje, z nichž jsem při zpracování čerpala, v práci řádně cituji a jsou uvedeny v seznamu použité literatury. V Olomouci dne . Adéla Gorová Poděkování Mé poděkování patří vedoucí bakalářské práce Mgr. Martině Oulehlové, Ph. D. za odborné vedení, ochotu a čas, který mi v průběhu vypracovávání diplomové práce věnovala. Dále poděkování patří Ing. Heleně Šupové, Ing. Zdeňku Šupovi a Ing. Pavlu Součkovi za poskytnutí materiálů a umožnění vstupu do Kaktusového skleníku Výstaviště Flora Olomouc, a.s., a také Nikol Kaletové za odbornou korekci abstraktu přeloženého do angličtiny. Poděkování patří také projektům IGA-Prf- 2018-001 a IGA-Prf-2019-004. BIBLIOGRAFICKÁ IDENTIFIKACE Jméno a příjmení: Bc. Adéla Gorová Název práce: Čeleď kaktusovité (Cactaceae) ve výuce biologie na středních školách Typ práce: Diplomová práce Pracoviště: Katedra botaniky, Přírodovědecká fakulta, Univerzita Palackého v Olomouci Vedoucí práce: Mgr. Martina Oulehlová, Ph.D. Rok obhajoby: 2020 Abstrakt: Diplomová práce se zabývá problematikou výuky čeledi kaktusovitých (Cactaceae) na středních školách. Teoretická část práce je zaměřena na praktický význam, využití, zajímavosti a specifika čeledi Cactaceae. Dále na charakteristiku Kaktusového skleníku Výstaviště Flora Olomouc, a.s., rozmístění zástupců kaktusů ve skleníku a charakteristiku pěstovaných zástupců kaktusů. Praktická část je zaměřena na tvorbu přehledného systému čeledi Cactaceae pro výuku studentů na středních školách, na přípravu přehledu pěstovaných zástupců kaktusů a na vytvoření komplexní přípravy pro realizaci exkurze pedagoga se studenty do sbírkového Kaktusového skleníku Výstaviště Flora Olomouc, a.s. -
Early Evolution of the Proto-Andean Margin of South America
Early evolution of the Proto-Andean margin of South America C. W. Rapela Centro de Investigaciones Geológicas, Universidad Nacional de La Plata, Calle 1 No. 644, 1900 La Plata, Argentina R. J. Pankhurst British Antarctic Survey, Cambridge CB30ET, United Kingdom C. Casquet Departamento de Petrología y Geoquímica, Universidad Complutense, 28040 Madrid, Spain E. Baldo J. Saavedra CSIC, Instituto de Agrobiología y Recursos Naturales, 37071 Salamanca, Spain C. Galindo Departamento de Petrología y Geoquímica, Universidad Complutense, 28040 Madrid, Spain ABSTRACT INTRODUCTION From a detailed study of a 500 km transect in the Sierras Pampeanas, central-west Argen- The evolution of the Gondwana margin pro- tina, two pre-Silurian tectono-magmatic episodes are recognized and defined, each culminating posed here is based on new geochemical, isotopic, in micro-continental collisions against the proto-Andean margin of Gondwana. The Pampean petrological, and sedimentological data from a orogeny started in Early Cambrian time with short-lived subduction, indicated by ca. 535 Ma 500 km traverse across the Eastern Sierras Pam- calc-alkaline granitoids. Following Pampean terrane collision, burial to granulite facies condi- peanas and Precordillera (Fig. 1). Pre-Silurian tions (ca. 9 kbar) generated widespread migmatites and ca. 520 Ma highly peraluminous gran- metamorphic and magmatic history is inferred ites in the Eastern Sierras Pampeanas. After brief quiescence, a second major episode, the from (1) dating by conventional U-Pb on abraded Famatinian orogeny, started with subduction ca. 490 Ma, forming a wide continental arc and zircons, U-Pb SHRIMP analyses, and whole-rock ensialic backarc basin. This heralded the approach of Laurentia to Gondwana, during which Rb-Sr and K-Ar, (2) thermo-barometry based on the Precordillera terrane separated from the southern Appalachian region, finally colliding with microprobe mineral analyses, and (3) Nd and Sr Gondwana in Silurian–Devonian time. -
GSA TODAY • Radon in Water, P
Vol. 8, No. 11 November 1998 INSIDE • Field Guide Editor, p. 5 GSA TODAY • Radon in Water, p. 10 • Women Geoscientists, p. 12 A Publication of the Geological Society of America • 1999 Annual Meeting, p. 31 Gas Hydrates: Greenhouse Nightmare? Energy Panacea or Pipe Dream? Bilal U. Haq, National Science Foundation, Division of Ocean Science, Arlington, VA 22230 ABSTRACT Recent interest in methane hydrates has resulted from the recognition that they may play important roles in the global carbon cycle and rapid climate change through emissions of methane from marine sediments and permafrost into the atmosphere, and in causing mass failure of sediments and structural changes on the continental slope. Their presumed large volumes are also consid- ered to be a potential source for future exploitation of methane as a resource. Natural gas hydrates occur widely on continental slope and rise, stabilized in place by high hydrostatic pressure and frigid bottom-temperature condi- tions. Change in these conditions, Figure 1. This seismic profile, over the landward side of Blake Ridge, crosses a salt diapir; the profile has either through lowering of sea level or been processed to show reflection strength. The prominent bottom simulating reflector (BSR) swings increase in bottom-water temperature, upward over the diapir because of the higher conductivity of the salt. Note the very strong reflections of may trigger the following sequence of gas accumulations below the gas-hydrate stability zone and the “blanking” of energy above it. Bright events: dissociation of the hydrate at its Spots along near-vertical faults above the diapir represent conduits for gas venting. -
Cactus Explorer the first Free On-Line Journal for Cactus and Succulent Enthusiasts
TheCactus Explorer The first free on-line Journal for Cactus and Succulent Enthusiasts 1 Schlumbergera opuntioides 2 Parodia mammulosa Number 13 3 Explorers Weekend 2014 ISSN 2048-0482 4 Crassulaceae at Lyon B.G. December 2014 5 Schlumbergera truncata The Cactus Explorer ISSN 2048-0482 Number 13 December 2014 THE POSITION OF PARODIA TURECEKIANA IN THE PARODIA MAMMULOSA COMPLEX In this article, Giovanna Anceschi & Alberto Magli discuss Parodia turecekiana R. Kiesling, part of the Parodia mammulosa (Lemaire) Taylor complex. Photographs by the authors Fig.1 Parodia mammulosa (turecekiana populations). Uruguay, Rio Negro, Nuevo Berlin. 27 Jan 2014, A&M 966 During the seven months of our 2013/2014 Parodia turecekiana R. Kiesling was one of journey, out of the 70 new taxa we investigated our “black sheep”. In fact, before this year’s in habitat for a forthcoming classification in the happy discovery, we failed to find the above Cactusinhabitat system, 11 belong to the genus mentioned taxon of the Pampa Biome on three Parodia Spegazzini (precisely, 10 are Andean occasions. The first time was in November taxa and one from the Pampa Biome). Parodia 2008, in Uruguay, Dpt. Río Negro, on Ruta 25, being one of our genera of preference, during between Bellaco and Young, following the our next journey we hope to find or deepen the reference R. Kiesling 8368 (Kiesling 1995, 67: knowledge of the last four taxa that will allow 18). The second time, again in November 2008, us to have a complete overview of Parodia s.l., in Uruguay, Dpt. Río Negro, Young, northwest based on study experience in the habitats of all of Young, locality Paso Uleste, in the its components. -
Phylogenetic Relationships in the Cactus Family (Cactaceae) Based on Evidence from Trnk/Matk and Trnl-Trnf Sequences
See discussions, stats, and author profiles for this publication at: http://www.researchgate.net/publication/51215925 Phylogenetic relationships in the cactus family (Cactaceae) based on evidence from trnK/matK and trnL-trnF sequences ARTICLE in AMERICAN JOURNAL OF BOTANY · FEBRUARY 2002 Impact Factor: 2.46 · DOI: 10.3732/ajb.89.2.312 · Source: PubMed CITATIONS DOWNLOADS VIEWS 115 180 188 1 AUTHOR: Reto Nyffeler University of Zurich 31 PUBLICATIONS 712 CITATIONS SEE PROFILE Available from: Reto Nyffeler Retrieved on: 15 September 2015 American Journal of Botany 89(2): 312±326. 2002. PHYLOGENETIC RELATIONSHIPS IN THE CACTUS FAMILY (CACTACEAE) BASED ON EVIDENCE FROM TRNK/ MATK AND TRNL-TRNF SEQUENCES1 RETO NYFFELER2 Department of Organismic and Evolutionary Biology, Harvard University Herbaria, 22 Divinity Avenue, Cambridge, Massachusetts 02138 USA Cacti are a large and diverse group of stem succulents predominantly occurring in warm and arid North and South America. Chloroplast DNA sequences of the trnK intron, including the matK gene, were sequenced for 70 ingroup taxa and two outgroups from the Portulacaceae. In order to improve resolution in three major groups of Cactoideae, trnL-trnF sequences from members of these clades were added to a combined analysis. The three exemplars of Pereskia did not form a monophyletic group but a basal grade. The well-supported subfamilies Cactoideae and Opuntioideae and the genus Maihuenia formed a weakly supported clade sister to Pereskia. The parsimony analysis supported a sister group relationship of Maihuenia and Opuntioideae, although the likelihood analysis did not. Blossfeldia, a monotypic genus of morphologically modi®ed and ecologically specialized cacti, was identi®ed as the sister group to all other Cactoideae. -
Andean Flat-Slab Subduction Through Time
Andean flat-slab subduction through time VICTOR A. RAMOS & ANDRE´ S FOLGUERA* Laboratorio de Tecto´nica Andina, Universidad de Buenos Aires – CONICET *Corresponding author (e-mail: [email protected]) Abstract: The analysis of magmatic distribution, basin formation, tectonic evolution and structural styles of different segments of the Andes shows that most of the Andes have experienced a stage of flat subduction. Evidence is presented here for a wide range of regions throughout the Andes, including the three present flat-slab segments (Pampean, Peruvian, Bucaramanga), three incipient flat-slab segments (‘Carnegie’, Guan˜acos, ‘Tehuantepec’), three older and no longer active Cenozoic flat-slab segments (Altiplano, Puna, Payenia), and an inferred Palaeozoic flat- slab segment (Early Permian ‘San Rafael’). Based on the present characteristics of the Pampean flat slab, combined with the Peruvian and Bucaramanga segments, a pattern of geological processes can be attributed to slab shallowing and steepening. This pattern permits recognition of other older Cenozoic subhorizontal subduction zones throughout the Andes. Based on crustal thickness, two different settings of slab steepening are proposed. Slab steepening under thick crust leads to dela- mination, basaltic underplating, lower crustal melting, extension and widespread rhyolitic volcan- ism, as seen in the caldera formation and huge ignimbritic fields of the Altiplano and Puna segments. On the other hand, when steepening affects thin crust, extension and extensive within-plate basaltic flows reach the surface, forming large volcanic provinces, such as Payenia in the southern Andes. This last case has very limited crustal melt along the axial part of the Andean roots, which shows incipient delamination. -
ON the TAXONOMY of CACTACEAE JUSS by the EVIDENCE of SEED MICROMORPHOLOGY and SDS-PAGE ANALYSIS Lamiaa F
European Journal of Botany, Plant Sciences and Phytology Vol.2, No.3, pp.1-15, October 2015 ___Published by European Centre for Research Training and Development UK (www.eajournals.org) ON THE TAXONOMY OF CACTACEAE JUSS BY THE EVIDENCE OF SEED MICROMORPHOLOGY AND SDS-PAGE ANALYSIS Lamiaa F. Shalabi Department of Biological and Geological Sciences, Faculty of Education, Ain Shams University, Cairo, Egypt. Biology Department, Faculty of Sciences, Jazan University, Jazan, Saudi Arabia. ABSTRACT Numerical classification of 16 taxa of Cactaceae was studied using combination of micromorphological characters of seeds (using L.M and SEM) and SDS- PAGE analysis. Aspects of seed micromorphology and seed protein variation as defined were recorded and scored comparatively for the OTU's into a data matrix. Phenetic relationships of these taxa were established based on UPGMA-clustering method by using Jaccard coefficient of the NTSYS-pc 2.2 program. The results were compatible with the traditional relationships of some taxa as the split-off of Opuntia humifusa and Astrophytum myriostigma, at separate lines, these results are compatible with their placement in tribes Opuntieae (subfamily Opuntioideae) and Cacteae (Subfamily cactoideae) respectively, at the time, the placement of three taxa Pseudorhipsalis ramulosa, Rhipsalis baccifera Accession 1, and Rhipsalis baccifera Accession 2 together, the clustering of Hylocereus triangularis and Neobuxbaumia euphorbioides together at a unique tribe Phyllocacteae. The findings contradict in a number of cases the traditional studies, as the grouping of Trichocereus vasquezii with the two represents of genus Parodia despite of their placement in different tribes. KEYWORDS: Cactaceae, SDS-PAGE, Seed micromorpgology, SEM INTRODUCTION The Cactaceae are an exciting and problematic group of plants because of their varied morphology, succulence, and their showy flowers (Barthlott and Hunt 1993). -
Variabilidad Morfológica Y Modelos Arqueológicos
1 El presente trabajo se orientó al estudio de la variación craneofacial de los grupos humanos que habitaron el sector austral de las Sierras Pampeanas y llanuras circundantes en tiempos prehispánicos desde una perspectiva que combina análisis morfológicos cuali-cuantitativos y análisis basados en la morfometría geométrica. Como objetivos específicos se planteó: a) caracterizar morfológicamente colecciones arqueológicas inéditas de restos óseos, b) estudiar la variación craneofacial de las mencionadas colecciones a partir de análisis de morfometría geométrica, c) establecer relaciones genéticas entre las poblaciones de la región central del país y demás regiones geográfico-ecológicas de Argentina y Sudamérica (Andes, Amazonia, Gran Chaco, Patagonia-Tierra del Fuego), d) poner a prueba diferentes modelos sobre las posibles vías de poblamiento del centro del país. Los resultados sugieren importantes similitudes a nivel de morfología craneal y variación epigenética entre muestras principalmente del lado oriental de las sierras –actual territorio de la provincia de Córdoba- y poblaciones del centro y Noreste de Patagonia, y región pampeana. Teniendo en cuenta los resultados generales, consideramos que el poblamiento de la región austral de las Sierras Pampeanas se relaciona con aquel ocurrido desde el Noreste del país, siguiendo un derrotero general Norte-Sur a través del Litoral Atlántico. Mariana Fabra Doctora en Historia (Facultad de Filosofía y Humanidades, Universidad Nacional de Córdoba, Argentina) y Magister en Antropología (FFyH, UNC), se desempeña actualmente como Investigadora Adjunta del Consejo Nacional de Investigaciones Científicas y Técnicas. Es Profesora Asistente la licenciatura en Antropología (Departamento de Antropología, Área Antropología Biológica, FFyH, UNC). Ha dirigido diversos proyectos de investigación (PIP CONICET, PID MiNCyT Córdoba), sobre temáticas vinculadas al poblamiento de la región central de Argentina y el estilo de vida de las poblaciones originarias del centro del país desde una perspectiva bioarqueológica. -
Frequency Content and Attenuation Laws for Sierras Pampeanas Earthquakes and Their Direct Implications on the Seismic Assessment for Life Extension of Embalse Npp
Transactions, SMiRT 19, Toronto, August 2007 Paper # K02/3 FREQUENCY CONTENT AND ATTENUATION LAWS FOR SIERRAS PAMPEANAS EARTHQUAKES AND THEIR DIRECT IMPLICATIONS ON THE SEISMIC ASSESSMENT FOR LIFE EXTENSION OF EMBALSE NPP. Roberto D. Martino1,3, Aldo A. Bonalumi1,3, and Ricardo J. Rocca2,3 1Departamento de Geología Básica, 2Departamento de Construcciones Civiles. 3Facultad de Ciencias Exactas, Físicas y Naturales. Universidad Nacional de Córdoba. Av. Vélez Sarsfield 1611. X 5016 GCA - Córdoba. República Argentina. E-mails: [email protected], [email protected], [email protected] ABSTRACT The Embalse NPP (ENPP), located in Córdoba, Argentina (lat: -32.23º, long -64.44º), is currently being reassessed in order to pursue a renewal of the operating license, due in 2010. ENPP site is located at a valley within the Sierras Pampeanas (Pampean Ranges) of Córdoba, which constitute the most eastern group of the Pampean Ranges Province. They are broken Andean foreland blocks, built as a consequence of the flat- lying orientation of the Nazca subducting plate. In the decade of 1970 it was determined a design earthquake based on little instrumental data. It was used a floating earthquake as MCE with a magnitude M = 6.5 and a maximum horizontal acceleration of 0.26 g. In the following decades several earthquakes of medium size magnitude (M = 5.5 to 6.4) within the Pampean Ranges have been registered. Data is not enough for defining a regional attenuation law, but data points adjust to the proposed relations for Central and Eastern US (CEUS). With new tectonic and seismological data, a deterministic analysis indicates that the magnitude size of the controlling earthquake remains reasonable, but changes in attenuation laws and design spectra will have to be considered for the renewal of the operating license The analysis of elastic response spectra shows intermediate shape forms compared with those used for stable continental zones like CEUS and the unstable continental zones like West US. -
Provenance Study on Neoproterozoic Rocks of Nw Argentina: Puncoviscana Formation – First Results
U N I V E R S I D A D D E C O N C E P C I Ó N DEPARTAMENTO DE CIENCIAS DE LA TIERRA 10° CONGRESO GEOLÓGICO CHILENO 2003 PROVENANCE STUDY ON NEOPROTEROZOIC ROCKS OF NW ARGENTINA: PUNCOVISCANA FORMATION – FIRST RESULTS ZIMMERMANN, U.1 1Dep.of Geol., RAU University, Auckland Park 2092, South Africa [email protected] INTRODUCTION Since more than 20 years the western border of Gondwana is object of controversies related to the basic question if crustal growth is related to terrane accretion or to “recycling” of the same crustal rocks during the Vendian and Lower Paleozoic. Different hypotheses were developed regarding the evolution of that margin. One of the key element to understand the crustal evolution, is the Vendian to Lower Cambrian so-called PVF. Turner (1960) described rock successions in northwestern Argentina (Fig. 1) of Pre-Ordovician age comprising greywackes and sand- and siltstones, but dominated by pelites as the PVF. Afterwards, it was established that mostly all Vendian to Lower Cambrian very-low to low grade metasedimentary rocks in the region are classified, such as Suncho, Negro Peinado or La Cébila Formation (e.g. comp. in Aceñolaza et al., 1988), are equivalents of the PVF. Widely distributed medium- to high-grade metasedimentary rocks (Fig. 1), those rocks were interpreted as exhumed deeper crustal levels of the PVF (Willner, 1990). Other authors deny this opinion and interpret the different metamorphic rocks related to different events, consequently of different ages (Mon and Hongn, 1990). Based on only punctual petrographic work, the depositional area was defined as a passive margin based on petrography and mainly major element geochemistry (Jezek, 1990, Willner et al., 1985, Rossi Toselli et al., 1997), or on preliminary trace element data (Do Campo and Ribeiro Guevara, 2002).