DOCSLIB.ORG

Program and Abstracts

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Program and Abstracts The Atlantic Geoscience Society (AGS) La Société Géoscientifique de l’Atlantique 45th Colloquium and Annual Meeting Special Sessions: • Special Session: In Memory of Dr. Trevor MacHattie (1974 - 2018) • Paleontology and Sedimentology in Atlantic Canada: In Memory of Dr. Ron Pickerill (1947 – 2018) • Current Research in Carboniferous Geology in the Atlantic Provinces • Minerals, metals, melts, and fluids associated with granitoid rocks: new insights from fundamental studies into the genesis, melt fertility, and ore-forming processes • Earth Science Outreach in the Maritime Provinces • Geohazards: Recent and Historical General Sessions: Current Research in the Atlantic Provinces February 7-9, 2019 Fredericton Inn, Fredericton, New Brunswick PROGRAM WITH ABSTRACTS We gratefully acknowledge sponsorship from the following companies and organizations: Department of Energy and Resource Development Geological Surveys Branch Department of Energy and Mines Department of Energy and Mines Geological Surveys Division Petroleum Resources Division Welcome to the 45th Colloquium and Annual Meeting of the Atlantic Geoscience Society in Fredericton, New Brunswick. This is a familiar place for AGS, having been a host several times over the years. We hope you will find something to interest you and generate discussion with old friends and new. AGS members are clearly pushing the boundaries of geoscience in all its branches! Be sure to take in the science on the posters and the displays from sponsors, and don’t miss the after-banquet jam and open mike on Saturday night. For social media types, please consider sharing updates on Facebook and Twitter (details in the program). We hope you will be able to use the weekend to renew old acquaintances, make new ones, and further the aims of your Atlantic Geoscience Society. Full details about the conference and registration are at http://www.unb.ca/fredericton/science/depts/earth-sciences/facilities/ags_colloquium.html. The organizers: Jim Walker, Mike Parkhill, Rob Raeside, Reg Wilson, Ann Timmermans, and David Lentz 2 ATLANTIC GEOSCIENCE SOCIETY 45th COLLOQUIUM AND ANNUAL GENERAL MEETING February 7-9, 2019, Fredericton Inn, Fredericton, New Brunswick PROGRAM SUMMARY THURSDAY 7th FEBRUARY, 2019 6.00 – 8:00 p.m. The Earth Science Café: "Mary Anning and the Sea Monsters” – UNB Earth Sciences, Quartermain Museum FRIDAY, 8th FEBRUARY, 2019 8.30 – Noon Workshop 1: "Structural Controls on Gold Deposits" – Bicentennial Room 1.00 – 5.00 p.m. Workshop 2: "Creating beautiful, effective, and reproducible graphics for geoscience using R" – Bicentennial Room 1.00 – 3.00 p.m. AGS Council meeting, Prince Edward Room 2.00 – 7.00 p.m. Poster set-up, Salon F 2.00 – 11.00 p.m. Registration, outside Bicentennial Room 3.00 – 5.00 p.m. Halifax 2022 meeting, Prince Edward Room 5.00 – 7.00 p.m. Atlantic Geology editors meeting, Prince Edward Room 7.00 – 9.20 p.m. Special session I: In memory of Dr. Trevor MacHattie – Salon A 7.00 – 9.20 p.m. General Session I: Current Research in the Atlantic Provinces – Salon B 7.00 – 9.20 p.m. Current Research in Carboniferous Geology in the Atlantic Provinces I – Salon C 9.20 – 11.00 p.m. Poster session and cash bar – Salon F SATURDAY, 9th FEBRUARY, 2019 8.40 – 10.00 a.m. Special session II: In memory of Dr. Trevor MacHattie – Salon A 8.30 – 10.00 a.m. Paleontology and Sedimentology in Atlantic Canada I: In memory of Dr. Ron Pickerill – Salon C 10.00 – 10.20 a.m. Coffee Break and Poster Session 10.20 – 12 noon Minerals, metals, melts, and fluids associated with granitoid rocks I–Salon A 10.20 – 12 noon Geohazards: Recent and Historical I – Salon B 10.20 – 12 noon Paleontology and Sedimentology in Atlantic Canada II: In memory of Dr. Ron Pickerill – Salon C Noon – 2.00 p.m. Luncheon and Annual General Meeting – Bicentennial Room 2.00 – 3.20 p.m. Minerals, metals, melts, and fluids associated with granitoid rocks II–Salon A 2.00 – 3.20 p.m. Earth Science Outreach in the Maritime Provinces I – Salon B 2.00 – 3.20 p.m. Paleontology and Sedimentology in Atlantic Canada III: In memory of Dr. Ron Pickerill – Salon C 3.20 – 3.30 p.m. Short break 3.30 – 4.30 p.m. General Session II: Current Research in the Atlantic Provinces – Salon A 3.30 – 4.30 p.m. Earth Science Outreach in the Maritime Provinces II – Salon B 3.30 – 4.50 p.m. General Session III: Current Research in the Atlantic Provinces – Salon C 4.30 – 5.00 p.m. AGS Education Committee Meeting – Salon B 8.30 – 5.00 p.m. Poster session open all day: posters must be removed by 5.00 p.m. 6.30 – 12.00 midnight Cash Bar – Bicentennial Room 7.00 – 9.00 p.m. Awards banquet – Bicentennial Room After dinner – midnight: Music Jam with Dewey Dunnington and friends, bring your favorite instrument – Bicentennial Room 3 PROGRAM AT A GLANCE Salon A Salon B Salon C General Session I: Current Current Research in Friday Special session I: In memory of Research in the Atlantic Carboniferous Geology in 7.00–9.20 Dr. Trevor MacHattie I Provinces the Atlantic Provinces I Friday Poster Session - Salon F 9.20–11.00 Paleontology and Saturday Special session II: In memory Sedimentology in Atlantic 8.30–10.00 of Dr. Trevor MacHattie Canada I: In memory of Dr. Ron Pickerill Saturday Coffee Break and Poster Session – Salon F 10.00–10.20 Paleontology and Minerals, metals, melts, and Saturday Geohazards: Recent and Sedimentology in Atlantic fluids associated with granitoid 10.20-12.00 Historical I Canada II: In memory of rocks I Dr. Ron Pickerill Saturday Luncheon and Annual General Meeting – Bicentennial Room Noon-2.00 Paleontology and Minerals, metals, melts, and Saturday Earth Science Outreach in Sedimentology in Atlantic fluids associated with granitoid 2.00-3.20 the Maritime Provinces I Canada III: In memory of rocks II Dr. Ron Pickerill Saturday Short Break 3.20-3.30 General Session II: General Session III: Saturday Earth Science Outreach in Current Research in the Current Research in the 3.30-4.50 the Maritime Provinces II Atlantic Provinces Atlantic Provinces 4 5 SOCIAL MEDIA To engage with the conference on Facebook and connect with other attendees, please visit https://www.facebook.com/QuartermainAGS2017/ If you are tweeting about the conference, please use the designated hashtags to enable other attendees to keep up with the Twitter conversation and to allow better archiving of our conference discussions. The hashtag for this meeting is #AGS2019 The hashtag for Earth Science Outreach is #AGSOutreach2019 Other twitter sights to follow during and after the conference: https://twitter.com/QuartermainCntr https://twitter.com/AtlanticGeoSoc OUTREACH On behalf of all persons involved with the 2019 AGS Outreach and Education, we would like to thank our awesome sponsors who have supported the AGS Teacher Earth Science Mini Boot Camp through generous financial donations and/or valued resources. Please join us for coffee and presentation at the Earth Science Café Thursday, February 7th, 2019. 6:00 pm | Fun Activities! 7:00 pm | Lively Presentation! For more information please visit: www.QuartermainEarthScienceCentre.com 6 7 8 SPECIAL SESSIONS: Special Session: In Memory of Dr. Trevor MacHattie Chairs: Geoff Baldwin and Chris White, Nova Scotia Geological Survey, Halifax, Nova Scotia [email protected] [email protected]; Daniel Kontak, Laurentian University, Sudbury, Ontario [email protected]; Jacob Hanley, Saint Mary's University, Halifax, Nova Scotia [email protected] This session is dedicated to honour the memory of our friend and colleague Trevor MacHattie who passed away in October 2018. During an 11-year career with the Nova Scotia Geoscience and Mines Branch, Trevor's scientific interests spanned a variety of topics, including bedrock mapping and stratigraphy, igneous petrology, geochemistry, geochronology, and mineral deposits. We would like to invite colleagues and former summer students to submit an abstract for oral or poster presentation on any aspect of research that spans these topics. We hope that a Special Volume in Atlantic Geology dedicated to Trevor will spawn from these proceedings. Paleontology and Sedimentology in Atlantic Canada: In Memory of Dr. Ron Pickerill Chairs: Nikole Bingham-Koslowski NRCAN, Halifax, Nova Scotia nikole.bingham- [email protected]; Melissa Grey Joggins Fossil Cliffs Centre [email protected] This session is dedicated to honour the memory of Dr. Ron Pickerill, who passed away in April 2018. Ron was a world renowned sedimentologist/paleontologist during his 40 years at UNB. This session encompasses all subjects relating to paleontology and sedimentology with a focus on research taking place in Atlantic Canada. Presentations on various paleontological and sedimentological themes are encouraged and consideration will also be given to participants whose research lies outside the area of interest. The Paleontology and Sedimentology in Atlantic Canada session seeks topics that cover various sedimentary basins, deposits, and processes as well as research on any aspect of the evolutionary tree of life from cyanobacteria to Australopithecus, and the events that influenced regional and global trends in evolution. Please come join us as we embark on an adventure through geological time exploring the evolution of Atlantic Canada (and potentially other regions) and the various critters that have inhabited the region. Minerals, metals, melts, and fluids associated with granitoid rocks: new insights from fundamental studies into the genesis, melt fertility, and ore-forming processes Chairs: Nadia Mohammadi UNB, [email protected]; Donnelly Archibald, St. FX [email protected]; Chris McFarlane, UNB [email protected]; Kathleen Thorne New Brunswick Geological Surveys Branch [email protected] This session will cover a broad range of topics in magmatic evolution, from melt generation to the development of ore deposits that are associated with granitoid rocks.
Load more

Recommended publications
  • Synthesis of Magnesium- and Silicon-Modified Hydroxyapatites By
    www.nature.com/scientificreports OPEN Synthesis of Magnesium- and Silicon-modifed Hydroxyapatites by Microwave-Assisted Method Received: 17 January 2019 Liudmila A. Rasskazova1, Ilya V. Zhuk1, Natalia M. Korotchenko1, Anton S. Brichkov1, Accepted: 19 September 2019 Yu-Wen Chen 2, Evgeniy A. Paukshtis1, Vladimir K. Ivanov1, Irina A. Kurzina 1 & Published: xx xx xxxx Vladimir V. Kozik1 Nanopowders of hydroxyapatite (HA), modifed by magnesium (MgHA) and by silicon (SiHA) were obtained by liquid-phase microwave synthesis method. X-ray difraction and IR spectroscopy results 2+ 4− showed that Mg and SiO4 ions were present in the synthesized products both as secondary phases and as part of the HA phase. Whitlockite was found in the magnesium-modifed HA (MgHA) and larnite was found in the silicon-modifed HA (SiHA); ion substitution for both materials resulted in solid solutions. In the synthesized samples of modifed HA, the increase of particle size of powders was in the order HA < SiHA < MgHA, which was calculated through data specifc surface area and measured pycnometric density of the powders. The Lewis acid sites (Ca2+, Mg2+, Si4+) were present using spectral probes on the surface of the samples of HA, MgHA, and SiHA, and the acidity of these sites decreased in the order SiHA > MgHA > HA. The rates of calcium phosphate layer deposition on the surface of these materials at 37 °C in the model simulated body fuid solution showed similar dependence. Te problem of fnding material for implantation has existed since ancient times. However, towards the end of the twentieth century the requirements for such materials and an informed and scientifcally grounded application began to form.
    [Show full text]
  • Lesson 6.Pmd
    Natural Ecosystem MODULE - 2 Ecological Concepts and Issues 6 Notes NATURAL ECOSYSTEM Whenever you travel long distance you come across changing patterns of landscape. As you move out from your city or village, you see croplands, grasslands, or in some areas a forests, desert or a mountainous region. These distinct landscapes are differentiated primarily due to the type of vegetation in these areas. Physical and geographical factors such as rainfall, temperature, elevation, soil type etc. determine the nature of the vegetation. In this lesson you will learn about the natural ecosystems with their varied vegetation and associated wildlife. OBJECTIVES After completing this lesson, you will be able to: • list the various natural ecosystems; • describe the various terrestrial ecosystems; • describe the various aquatic ecosystems (fresh water, marine and estuarine); • recognize ecotones, their significance and the edge effect. • list the major Indian ecosystems; • list the threatened ecosystems-mangrove, wetlands, coastal ecosystems and islands; • explain the need and methods of conservation of natural ecosystems. 6.1 WHAT ARE NATURAL ECOSYSTEMS A natural ecosystem is an assemblage of plants and animals which functions as a unit and is capable of maintaining its identity such as forest, grassland, an estuary, human intervention is an example of a natural ecosystem. A natural ecosystem is totally dependent on solar energy. There are two main categories of ecosystems. 95 MODULE - 2 Environmental Science Senior Secondary Course Ecological Concepts and Issues (1) Terrestrial ecosystem: Ecosystems found on land e.g. forest, grasslands, deserts, tundra. (2) Aquatic ecosystem: Plants and animal community found in water bodies. These can be further classified into two sub groups.
    [Show full text]
  • Smart Border Management: Indian Coastal and Maritime Security
    Contents Foreword p2/ Preface p3/ Overview p4/ Current initiatives p12/ Challenges and way forward p25/ International examples p28/Sources p32/ Glossary p36/ FICCI Security Department p38 Smart border management: Indian coastal and maritime security September 2017 www.pwc.in Dr Sanjaya Baru Secretary General Foreword 1 FICCI India’s long coastline presents a variety of security challenges including illegal landing of arms and explosives at isolated spots on the coast, infiltration/ex-filtration of anti-national elements, use of the sea and off shore islands for criminal activities, and smuggling of consumer and intermediate goods through sea routes. Absence of physical barriers on the coast and presence of vital industrial and defence installations near the coast also enhance the vulnerability of the coasts to illegal cross-border activities. In addition, the Indian Ocean Region is of strategic importance to India’s security. A substantial part of India’s external trade and energy supplies pass through this region. The security of India’s island territories, in particular, the Andaman and Nicobar Islands, remains an important priority. Drug trafficking, sea-piracy and other clandestine activities such as gun running are emerging as new challenges to security management in the Indian Ocean region. FICCI believes that industry has the technological capability to implement border management solutions. The government could consider exploring integrated solutions provided by industry for strengthening coastal security of the country. The FICCI-PwC report on ‘Smart border management: Indian coastal and maritime security’ highlights the initiatives being taken by the Central and state governments to strengthen coastal security measures in the country.
    [Show full text]
  • Diversity of Malacofauna from the Paleru and Moosy Backwaters Of
    Journal of Entomology and Zoology Studies 2017; 5(4): 881-887 E-ISSN: 2320-7078 P-ISSN: 2349-6800 JEZS 2017; 5(4): 881-887 Diversity of Malacofauna from the Paleru and © 2017 JEZS Moosy backwaters of Prakasam district, Received: 22-05-2017 Accepted: 23-06-2017 Andhra Pradesh, India Darwin Ch. Department of Zoology and Aquaculture, Acharya Darwin Ch. and P Padmavathi Nagarjuna University Nagarjuna Nagar, Abstract Andhra Pradesh, India Among the various groups represented in the macrobenthic fauna of the Bay of Bengal at Prakasam P Padmavathi district, Andhra Pradesh, India, molluscs were the dominant group. Molluscs were exploited for Department of Zoology and industrial, edible and ornamental purposes and their extensive use has been reported way back from time Aquaculture, Acharya immemorial. Hence the present study was focused to investigate the diversity of Molluscan fauna along Nagarjuna University the Paleru and Moosy backwaters of Prakasam district during 2016-17 as these backwaters are not so far Nagarjuna Nagar, explored for malacofauna. A total of 23 species of molluscs (16 species of gastropods belonging to 12 Andhra Pradesh, India families and 7 species of bivalves representing 5 families) have been reported in the present study. Among these, gastropods such as Umbonium vestiarium, Telescopium telescopium and Pirenella cingulata, and bivalves like Crassostrea madrasensis and Meretrix meretrix are found to be the most dominant species in these backwaters. Keywords: Malacofauna, diversity, gastropods, bivalves, backwaters 1. Introduction Molluscans are the second largest phylum next to Arthropoda with estimates of 80,000- 100,000 described species [1]. These animals are soft bodied and are extremely diversified in shape and colour.
    [Show full text]
  • (M = Ca, Mg, Fe2+), a Structural Base of Ca3mg3(PO4)4 Phosphors
    crystals Article Crystal Chemistry of Stanfieldite, Ca7M2Mg9(PO4)12 (M = Ca, Mg, Fe2+), a Structural Base of Ca3Mg3(PO4)4 Phosphors Sergey N. Britvin 1,2,* , Maria G. Krzhizhanovskaya 1, Vladimir N. Bocharov 3 and Edita V. Obolonskaya 4 1 Department of Crystallography, Institute of Earth Sciences, St. Petersburg State University, Universitetskaya Nab. 7/9, 199034 St. Petersburg, Russia; [email protected] 2 Nanomaterials Research Center, Kola Science Center of Russian Academy of Sciences, Fersman Str. 14, 184209 Apatity, Russia 3 Centre for Geo-Environmental Research and Modelling, Saint-Petersburg State University, Ulyanovskaya ul. 1, 198504 St. Petersburg, Russia; [email protected] 4 The Mining Museum, Saint Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia; [email protected] * Correspondence: [email protected] Received: 1 May 2020; Accepted: 25 May 2020; Published: 1 June 2020 Abstract: Stanfieldite, natural Ca-Mg-phosphate, is a typical constituent of phosphate-phosphide assemblages in pallasite and mesosiderite meteorites. The synthetic analogue of stanfieldite is used as a crystal matrix of luminophores and frequently encountered in phosphate bioceramics. However, the crystal structure of natural stanfieldite has never been reported in detail, and the data available so far relate to its synthetic counterpart. We herein provide the results of a study of stanfieldite from the Brahin meteorite (main group pallasite). The empirical formula of the mineral is Ca8.04Mg9.25Fe0.72Mn0.07P11.97O48. Its crystal structure has been solved and refined to R1 = 0.034. Stanfieldite from Brahin is monoclinic, C2/c, a 22.7973(4), b 9.9833(2), c 17.0522(3) Å, β 99.954(2)◦, 3 V 3822.5(1)Å .
    [Show full text]
  • Arabian Sea and the Gulf of Oman by Global Ocean Associates Prepared for Office of Naval Research – Code 322 PO
    An Atlas of Oceanic Internal Solitary Waves (February 2004) Arabian Sea and the Gulf of Oman by Global Ocean Associates Prepared for Office of Naval Research – Code 322 PO Arabian Sea and the Gulf of Oman Overview The Arabian Sea is located in the northwest Indian Ocean. It is bounded by India (to the east), Iran (to the north) and the Arabian Peninsula (in the west)(Figure 1). The Gulf of Oman is located in the northwest corner of the Arabian Sea. The continental shelf in the region is widest off the northwest coast of India, which also experiences wind-induced upwelling. [LME, 2004]. The circulation in the Arabian Sea is affected by the Northeast (March-April) and Southwest (September -October) Monsoon seasons [Tomczak et al. 2003]. Figure 1. Bathymetry of Arabian Sea [Smith and Sandwell, 1997]. 501 An Atlas of Oceanic Internal Solitary Waves (February 2004) Arabian Sea and the Gulf of Oman by Global Ocean Associates Prepared for Office of Naval Research – Code 322 PO Observations There has been some scientific study of internal waves in the Arabian Sea and Gulf of Oman through the use of satellite imagery [Zheng et al., 1998; Small and Martin, 2002]. The imagery shows evidence of fine scale internal wave signatures along the continental shelf around the entire region. Table 1 shows the months of the year when internal wave observations have been made. Table 1 - Months when internal waves have been observed in the Arabian Sea and Gulf of Oman (Numbers indicate unique dates in that month when waves have been noted) Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 2 552 1251 Small and Martin [2002] reported on internal wave signatures observed in ERS SAR images of the Gulf of Oman.
    [Show full text]
  • The Natural Choice for Wildlife Holidays Welcome
    HOLIDAYS WITH 100% FINANCIAL PROTECTION The natural choice for wildlife holidays Welcome After spending considerable time and effort reflecting, questioning what we do and how we do it, and scrutinising the processes within our office and the systems we use for support, I am delighted to say that we are imbued with a new vigour, undiminished enthusiasm, and greater optimism than ever. My own determination to continue building on the solid foundation of twenty years of experience in wildlife tourism, since we started from very humble beginnings – to offer what is simply the finest selection of high quality, good value, tailor-made wildlife holidays – remains undaunted, and is very much at the core of all we do. A physical move to high-tech office premises in the attractive city of Winchester leaves us much better connected to, and more closely integrated with, the outside world, and thus better able to receive visitors. Our team is leaner, tighter, more widely travelled and more knowledgeable than ever before, allowing us to focus on terrestrial, marine and – along with Dive Worldwide – submarine life without distraction. In planning this brochure we deliberately set out to whet the appetite, and make no mention of either dates or prices. As the vast majority of trips are tailored to our clients’ exact requirements – whether in terms of itinerary, duration, standard of accommodation or price – the itineraries herein serve merely as indications of what is possible. Thereafter, you can refine these suggestions in discussion with one of our experienced consultants to pin down your precise needs and wants, so we can together create the wildlife holiday of your dreams.
    [Show full text]
  • Multiscale Characterization of Bone Mineral: New Perspectives in Structural Imaging Using X-Ray and Electron Diffraction Contrast Mariana Verezhak
    Multiscale characterization of bone mineral: new perspectives in structural imaging using X-ray and electron diffraction contrast Mariana Verezhak To cite this version: Mariana Verezhak. Multiscale characterization of bone mineral: new perspectives in structural imag- ing using X-ray and electron diffraction contrast. Materials Science [cond-mat.mtrl-sci]. Communauté Universite Grenoble Alpes, 2016. English. tel-01576447 HAL Id: tel-01576447 https://hal.archives-ouvertes.fr/tel-01576447 Submitted on 23 Aug 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THESIS In order to obtain the grade of DOCTOR OF GRENOBLE ALPES UNIVERSITY Specialty: Physics/Nanophysics Ministerial order: 7 August 2006 Presented by « Mariana / VEREZHAK » Thesis supervised by « Marie/PLAZANET » and co-supervised by « Aurélien/GOURRIER » Prepared at Laboratory of Interdisciplinary Physics at Doctoral School of Physics of Grenoble Multiscale characterization of bone mineral: new perspectives in structural imaging using X-ray and electron diffraction contrast Thesis is publically defended on « 28 October 2016 », in front of the jury composed of : Prof. Franz BRUCKERT Grenoble INP UGA, President of jury Dr. Aurélien GOURRIER LIPhy, Grenoble, co-Director of thesis Prof. Thomas LAGRANGE Institute of Technology of Lausanne, Examiner Dr.
    [Show full text]
  • Connecting the Deep Earth and the Atmosphere
    In Mantle Convection and Surface Expression (Cottaar, S. et al., eds.) AGU Monograph 2020 (in press) Connecting the Deep Earth and the Atmosphere Trond H. Torsvik1,2, Henrik H. Svensen1, Bernhard Steinberger3,1, Dana L. Royer4, Dougal A. Jerram1,5,6, Morgan T. Jones1 & Mathew Domeier1 1Centre for Earth Evolution and Dynamics (CEED), University of Oslo, 0315 Oslo, Norway; 2School of Geosciences, University of Witwatersrand, Johannesburg 2050, South Africa; 3Helmholtz Centre Potsdam, GFZ, Telegrafenberg, 14473 Potsdam, Germany; 4Department of Earth and Environmental Sciences, Wesleyan University, Middletown, Connecticut 06459, USA; 5DougalEARTH Ltd.1, Solihull, UK; 6Visiting Fellow, Earth, Environmental and Biological Sciences, Queensland University of Technology, Brisbane, Queensland, Australia. Abstract Most hotspots, kimberlites, and large igneous provinces (LIPs) are sourced by plumes that rise from the margins of two large low shear-wave velocity provinces in the lowermost mantle. These thermochemical provinces have likely been quasi-stable for hundreds of millions, perhaps billions of years, and plume heads rise through the mantle in about 30 Myr or less. LIPs provide a direct link between the deep Earth and the atmosphere but environmental consequences depend on both their volumes and the composition of the crustal rocks they are emplaced through. LIP activity can alter the plate tectonic setting by creating and modifying plate boundaries and hence changing the paleogeography and its long-term forcing on climate. Extensive blankets of LIP-lava on the Earth’s surface can also enhance silicate weathering and potentially lead to CO2 drawdown (cooling), but we find no clear relationship between LIPs and post-emplacement variation in atmospheric CO2 proxies on very long (>10 Myrs) time- scales.
    [Show full text]
  • Selected Core from the Albert Formation (Mississippian), Moncton Basin, Southern New Brunswick
    Selected Core from the Albert Formation (Mississippian), Moncton Basin, Southern New Brunswick Dave Keighley* University of New Brunswick, Fredericton, New Brunswick, Canada [email protected] and Clint St. Peter Hugh John Flemming Centre, Fredericton, New Brunswick, Canada Abstract Introduction The Moncton Basin is located in the southeastern part of New Brunswick (Fig. 1) and has a long history of petroleum activity. In the area ~25 km S of Moncton there has been mining of solid bitumen, Albertite, at Albert Mines (1850's); minor and intermittent production of oil/gas at Dover and Saint-Joseph (1859 to 1905); and oil and gas production at Stoney Creek (1911 to 1991 - gas was piped to the city for ~80 years). Stoney Creek gas is sweet, but wet, and the oil (total in place ~2.1 x 106 m3 with <5% recovered to date) is paraffinic with a pour point of over 7oC (45oF). Numerous appraisals of the oil shale in the area (e.g. Shell Albert Mines # 4 borehole) have also been undertaken periodically. In 2000, focus shifted 80 km west, where the McCully Gas Field (~1 TCF in place) was discovered, east of Sussex, by Corridor Resources Inc. and Potash Corporation of Saskatchewan (PCS). The A-67 discovery well (initial flow: 2.5 mcf p. day), and adjacent P-66 well currently produce gas for the PCS mill, but a link to the M&NE pipeline (Fig. 1) is planned to go into operation in late 2006. Approx. 17bcf (proven, ~120 bcf P2) remains in this production area (8% of the total joint venture area).
    [Show full text]
  • Ecca Group) of South Africa: a Preliminary Review of Palaeoniscoid Fishes and Taphonomy
    Records of the Western Australian Museum Supplement No. 57: 175-181 (1999). The Permian Whitehill Formation (Ecca Group) of South Africa: a preliminary review of palaeoniscoid fishes and taphonomy Fiona J. Evans 1 and Patrick A. Bender2 I Department of Zoology, University of Stellenbosch, Private Bag Xl, Matieland, 7602, South Africa; email: [email protected] 2 Museum of the Council for Geoscience, Private Bag Xl12, Pretoria, 0001, South Africa Abstract - The Permian (Artinskian) Whitehill Formation (Ecca Group) in South Africa and southern Namibia was deposited as part of a large stratified inland sea which extended from the southern margins of South Africa, and southern Namibia, northern Namibia (Aba-Huab Formation, Huab Basin) to the Iratl Formation of the Parana Basin in Brazil and parts of Uruguay. A common biota exists between these two continents, namely mesosaurid reptiles, pygocephalomorph crustacea, wood, palaeoniscoid fish and insects. The Whitehill Formation also contains plant stem fragments, palynomorphs, coprolites, a cephalochordate, rare sponge spicules and traces of arthropods and fish. The good preservation, particularly of the palaeoniscoid material, from the Whitehill Formation contrasts strongly with the disarticulated scales and spines from northern Namibia and Brazil. Recent collections in the Whitehill Formation near Calvinia and Louriesfontein (Northern Cape Province) of South Africa have demonstrated the necessity for a review of the palaeoniscoid taxa present in these units. Possible new species have also been collected, including a deep-bodied form. INTRODUCTION The extensive stratified inland sea in which the Whitehill Formation (Ecca Group, Karoo Supergroup; - - - - - Waterford Fm Figure 1) was deposited had limited or no access to ------------ the ocean according to reconstructions by Oelofsen Fort Brown Fm and Araujo (1987) and Pickford (1995).
    [Show full text]
  • Aula 4 – Tipos Crustais Tipos Crustais Continentais E Oceânicos
    14/09/2020 Aula 4 – Tipos Crustais Introdução Crosta e Litosfera, Astenosfera Crosta Oceânica e Tipos crustais oceânicos Crosta Continental e Tipos crustais continentais Tipos crustais Continentais e Oceânicos A interação divergente é o berço fundamental da litosfera oceânica: não forma cadeias de montanhas, mas forma a cadeia desenhada pela crista meso- oceânica por mais de 60.000km lineares do interior dos oceanos. A interação convergente leva inicialmente à formação dos arcos vulcânicos e magmáticos (que é praticamente o berço da litosfera continental) e posteriormente à colisão (que é praticamente o fechamento do Ciclo de Wilson, o desparecimento da litosfera oceânica). 1 14/09/2020 Curva hipsométrica da terra A área de superfície total da terra (A) é de 510 × 106 km2. Mostra a elevação em função da área cumulativa: 29% da superfície terrestre encontra-se acima do nível do mar; os mais profundos oceanos e montanhas mais altas uma pequena fração da A. A > parte das regiões de plataforma continental coincide com margens passivas, constituídas por crosta continental estirada. Brito Neves, 1995. Tipos crustais circunstâncias geométrico-estruturais da face da Terra (continentais ou oceânicos); Característica: transitoriedade passar do Tempo Geológico e como forma de dissipar o calor do interior da Terra. Todo tipo crustal adveio de um outro ou de dois outros, e será transformado em outro ou outros com o tempo, toda esta dança expressando a perda de calor do interior para o exterior da Terra. Nenhum tipo crustal é eterno; mais "duráveis" (e.g. velhos Crátons de de "ultra-longa duração"); tipos de curta duração, muitas modificações e rápida evolução potencial (como as bacias de antearco).
    [Show full text]