Western Mediterranean)
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Mangrove Dynamics and Environmental Changes on Koh Chang, Thailand During the Last Millennium
This is a repository copy of Mangrove dynamics and environmental changes on Koh Chang, Thailand during the last millennium. White Rose Research Online URL for this paper: https://eprints.whiterose.ac.uk/145934/ Version: Accepted Version Article: Englong, Apichaya, Punwong, Paramita, Selby, Katherine Anne orcid.org/0000-0002-3055- 2872 et al. (3 more authors) (2019) Mangrove dynamics and environmental changes on Koh Chang, Thailand during the last millennium. Quaternary International. pp. 128-138. ISSN 1040-6182 https://doi.org/10.1016/j.quaint.2019.05.011 Reuse This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND) licence. This licence only allows you to download this work and share it with others as long as you credit the authors, but you can’t change the article in any way or use it commercially. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ Manuscript Details Manuscript number QUATINT_2018_703_R2 Title Mangrove dynamics and environmental changes on Koh Chang, Thailand during the last millennium Article type Full Length Article Abstract A 1500-year record of mangrove dynamics has been established from palaeoecological analyses on three cores from Salak Phet Bay, Koh Chang island in the eastern Gulf of Thailand. The occurrence of Rhizophora, accompanied by other mangrove species, suggested that Salak Phet Bay supported a mangrove community from at least 1500 cal yr BP. -
Late Quaternary Eustatic Sea-Level Changes Along the Malibu Coast, Los Angeles County, California
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln USGS Staff -- Published Research US Geological Survey 1972 Late Quaternary Eustatic Sea-Level Changes Along The Malibu Coast, Los Angeles County, California Peter W. Birkeland University of Colorado at Boulder Follow this and additional works at: https://digitalcommons.unl.edu/usgsstaffpub Part of the Earth Sciences Commons Birkeland, Peter W., "Late Quaternary Eustatic Sea-Level Changes Along The Malibu Coast, Los Angeles County, California" (1972). USGS Staff -- Published Research. 492. https://digitalcommons.unl.edu/usgsstaffpub/492 This Article is brought to you for free and open access by the US Geological Survey at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in USGS Staff -- Published Research by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. LATE QUATERNARY EUSTATIC SEA-LEVEL CHANGES ALONG THE MALIBU COAST, LOS ANGELES COUNTY, CALIFORNIA1'2 PETER W. BIRKELAND Department of Geological Sciences, University of Colorado, Boulder, Colorado 80302; and U.S. Geological Survey, Denver, Colorado 80225 ABSTRACT Late Quaternary relative sea-level changes along the Malibu coast can be deciphered by study of geo- morphic features and marine and associated stream deposits. Evidence for such changes includes (a) stream downcutting in large valleys during low stands of sea level, (b) stream aggradation in the same valleys during high stands of sea level, and (c) marine shoreline angles whose altitudes coincide with the tops of valley-fill stream deposits. This evidence, and open-system uranium-series dates for shells from the Corral and Dume terrace deposits, provide a time scale for certain sea-level changes. -
Syntectonic Deposition of Plio-Quaternary Sediments in the Santa Rosalía Basin of Baja California Sur, Mexico
SYNTECTONIC DEPOSITION OF PLIO-QUATERNARY SEDIMENTS IN THE SANTA ROSALÍA BASIN OF BAJA CALIFORNIA SUR, MEXICO BY ABIGAIL MICHELS A thesis submitted in partial fulfillment of the requirements of the degree of Bachelor of Arts (Geology) at Gustavus Adolphus College 2018 Syntectonic Deposition of Plio-Quaternary Sediments in the Santa Rosalía Basin of Baja California Sur, Mexico By Abigail Michels Under the supervision of Dr. Andrew Haveles and Dr. Tina Niemi ABSTRACT Plio-Quaternary sediments of the Tirabuzón, Infierno, and Santa Rosalía formations record syntectonic deposition in the Santa Rosalía basin—an oblique-rift-margin basin along the Gulf of California in Baja California Sur, Mexico. This study aims to further our understanding of the basin’s evolution and reconstruct its depositional history through interpreting the tectonic events and depositional environments present at Mesa Soledad. This was done through the analysis of two stratigraphic sections on either side of a high-angle, NNW-striking fault with 26 meters of vertical displacement. Analyses of macrofossils, microfossils, sediments, and sedimentary petrography help characterize both the marine and fluvial facies within the three sedimentary units present in the study area: the Tirabuzón, Infierno, and Santa Rosalía. These three units lie unconformably atop one another, all with a distinct stratigraphic pattern of regression characterized by fossiliferous marine sandstones grading up into poorly-sorted fluvial conglomerates. The displacement seen in this previously unstudied -
Modern Analogues and Depositional Models
201 CHAPTER 6: MODERN ANALOGUES AND DEPOSITIONAL MODELS 202 6.1 Introduction Sequence stratigraphic position plays an important role in peat formation and coal seam thickness, extent, and distribution. Peat-forming environments and depositional environments of surrounding and adjacent strata may also affect coal characteristics by simultaneously influencing coal continuity, thickness, geometry, distribution, and quality (Flores, 1993). This chapter will discuss relationships between coal properties and the depositional environments of peat and surrounding strata. Depositional interpretations of coal-bearing facies successions together with comparisons to modern depositional analogues is the basis for the creation of depositional models for Desmoinesian coals across the Bourbon arch. To enhance coalbed methane exploration and production strategies, Flores (1993) emphasized the importance of understanding the heterogeneities of properties such as coal thickness, extent, geometry, and distribution, as well as the properties of surrounding sediments and their depositional environments. Creating depositional models of significant coal-bearing intervals can improve understanding of Desmoinesian coals in eastern Kansas. Depositional models are summaries of sedimentary environments or systems, which can be used for comparison to other environments or systems. Depositional models provide a guide for future observations, evaluate the validity of existing concepts, and can be used as a tool for prediction of geologic situations with incomplete data -
PERMAFROST Seventh International Conference June 23-27, 1998
PERMAFROST Seventh International Conference June 23-27, 1998 Program, Abstracts, Reports of the International Permafrost Association Yellowknife, Canada Editors: Antoni G. Lewkowicz Michel Allard Acknowledgments We are grateful to Shawne Clarke and Steve Kokelj, University of Ottawa and Laurent Desrochers and Caroline Lavoie, Universite Laval, for their hard work through the various stages of the production of this volume. iv The 7th International Permafrost Conference Preface This volume comprises the Conference Program, short abstracts, extended abstracts and reports of the International Permafrost Association. The technical portion of the Conference Program includes two Plenary sessions, two extensive Poster sessions and 22 Oral sessions. To fit all of these activities into the time available, three concurrent sessions were necessary for much of the conference. The 59 extended abstracts were submitted by graduate students and other authors whowished to present posters at the Conference and publish a summary of their research endeavours. These extended abstracts were edited but not reviewed. Both the short and extended abstracts are organized alphabetically in this volume by senior author. The reports of the Secretary General and the Working Groups of the International Permafrost Association, found in the last part of this volume, cover the period since the Sixth International Permafrost Conference in Beijing. The latter were prepared by various members of the Working Groups and describe meetings organized, publications produced, international collaboration and plans for the future. Some of these Working Groups will be renewed in Yellowknife while others have completed the tasks for which they were created. All Working Groups will report orally at the second plenary session. -
Land Beneath the Waves, Submerged Landscapes and Sea Level Change
EUROPEAN MARINE BOARD Land Beneath the Waves Submerged landscapes and sea level change A joint geoscience-humanities strategy for European Continental Shelf Prehistoric Research Land Beneath the Waves: Submerged landscapes and sea level change Land Beneath the Waves: Position Paper 21 Wandelaarkaai 7 I 8400 Ostend I Belgium Tel.: +32(0)59 34 01 63 I Fax: +32(0)59 34 01 65 E-mail: [email protected] www.marineboard.eu www.marineboard.eu European Marine Board The Marine Board provides a pan-European platform for its member organizations to develop common priorities, to advance marine research, and to bridge the gap between science and policy in order to meet future marine science challenges and opportunities. The Marine Board was established in 1995 to facilitate enhanced cooperation between European marine science organizations towards the development of a common vision on the research priorities and strategies for marine science in Europe. Members are either major national marine or oceanographic institutes, research funding agencies, or national consortia of universities with a strong marine research focus. In 2014, the Marine Board represents 35 Member Organizations from 18 countries. The Board provides the essential components for transferring knowledge for leadership in marine research in Europe. Adopting a strategic role, the Marine Board serves its member organizations by providing a forum within which marine research policy advice to national agencies and to the European Commission is developed, with the objective of promoting the establishment of the European marine Research Area. www.marineboard.eu European Marine Board Member Organizations UNIVERSITÉS MARINES Irish Marine Universities National Research Council of Italy Consortium MASTS Design: Zoeck nv Cover image: Diver surveying Pavlopetri Early Bronze Age site (Credit: J. -
Short-Term Sea Level Changes of the Upper Cretaceous Carbonates: Calibration Between Palynomorphs Composition, Inorganic Geochemistry, and Stable Isotopes
minerals Article Short-Term Sea Level Changes of the Upper Cretaceous Carbonates: Calibration between Palynomorphs Composition, Inorganic Geochemistry, and Stable Isotopes Ahmed Mansour 1 , Thomas Gentzis 2,* , Michael Wagreich 3 , Sameh S. Tahoun 4 and Ashraf M.T. Elewa 1 1 Geology Department, Faculty of Science, Minia University, Minia 61519, Egypt; [email protected] (A.M.); [email protected] (A.M.T.E.) 2 Core Laboratories LP, 6316 Windfern Road, Houston, TX 77040, USA 3 Department of Geology, Faculty of Earth Sciences, Geography and Astronomy, University of Vienna, 1090 Vienna, Austria; [email protected] 4 Geology Department, Faculty of Science, Cairo University, Giza 12613, Egypt; [email protected] * Correspondence: [email protected]; Tel.: +1-713-328-2556 Received: 10 November 2020; Accepted: 4 December 2020; Published: 7 December 2020 Abstract: Widespread deposition of pelagic-hemipelagic sediments provide an archive for the Late Cretaceous greenhouse that triggered sea level oscillations. Global distribution of dinoflagellate cysts (dinocysts) exhibited a comparable pattern to the eustatic sea level, and thus, considered reliable indicators for sea level and sequence stratigraphic reconstructions. Highly diverse assemblage of marine palynomorphs along with elemental proxies that relate to carbonates and siliciclastics and bulk carbonate δ13C and δ18O from the Upper Cretaceous Abu Roash A Member were used to reconstruct short-term sea level oscillations in the Abu Gharadig Basin, southern Tethys. Additionally, we investigated the relationship between various palynological, elemental, and isotope geochemistry parameters and their response to sea level changes and examined the link between these sea level changes and Late Cretaceous climate. -
Some Aspects of the Pleistocene Succession in Areas Adjoining The
Some Aspects of the Pleistocene Succession in Areas Adjoining the English Channel thesis presented for the degree of Doctor of Philosophy in the U n iv ersity o f London hy David Henry Keen A p ril 1975 ProQuest Number: 10098275 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest. ProQuest 10098275 Published by ProQuest LLC(2016). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States Code. Microform Edition © ProQuest LLC. ProQuest LLC 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106-1346 ii A bstract Middle and Upper Pleistocene sea level and climatic successions for the shores of the English Channel are proposed. The sequence is based on the ezamination of an area of fluvial deposition in south Hampshire and an area of marine, colluvial and aeolian deposition in the Channel Islands. Five main conclusions are proposed: I, the terrace gravels of south Hampshire are entirely of fluvial origin and were deposited by the Pleisto cene River Solent. These terraces are of end interglacial age and were formed by the large discharges associated with cooling climates, but before glacio-eustatic effects caused sea level to fall greatly from the inter- glacial level; II, the Hoxnian inter glacial sea level was around 100 ft. -
Ashraf M.T. Elewa Migration of Organisms Climate • Geography • Ecology Ashraf M
Ashraf M.T. Elewa Migration of Organisms Climate • Geography • Ecology Ashraf M. T. Elewa (Editor) Migration of Organisms Climate • Geography • Ecology With 67 Figures 123 Dr. Ashraf M. T. Elewa Professor Minia University Faculty of Science Geology Department Egypt E-mail: [email protected] Library of Congress Control Number: 2005927792 ISBN-10 3-540-26603-8 Springer Berlin Heidelberg New York ISBN-13 978-3-540-26603-7 Springer Berlin Heidelberg New York This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitations, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. Springer is a part of Springer Science+Business Media springeronline.com © Springer-Verlag Berlin Heidelberg 2005 Printed in The Netherlands The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Cover design: Erich Kirchner Production: Luisa Tonarelli Typesetting: Camera-ready by the editor Printed on acid-free paper 30/2132/LT – 5 4 3 2 1 0 Dedication This book is dedicated to all people who Believe in One God Believe in Peace Believe in Migration in the Way of God To my father who died on Sunday, the 10th of April, 2005 Foreword P. -
A Review of Coastal Dunefield Evolution in Southeastern Queensland
Journal of Coastal Research SI 75 308-312 Coconut Creek, Florida 2016 A Review of Coastal Dunefield Evolution in Southeastern Queensland Graziela Miot da Silva†* and James Shulmeister ‡ †School of the Environment ‡School of Geography Planning and Flinders University Environmental Management www.cerf-jcr.org Adelaide, South Australia The University of Queensland Brisbaine, Queensland. ABSTRACT Miot da Silva, G. and Shulmeister, J., 2016. A review of coastal dunefield evolution in Southeastern Queensland. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 308-312. Coconut Creek (Florida), ISSN 0749-0208. www.JCRonline.org The Southern Queensland subtropical coastline represents a major depositional system containing 3 of the largest sand islands in the world. The surface of these sand masses comprises foredune ridges and predominantly large transgressive dunefields, deposited episodically during the Quaternary. The chronological sequence of these dunefield phases, however, is still poorly understood. This paper summarizes the information available regarding dunefield transgression events on the southern coast of Queensland and indicates that both marine and climate effects are important controlling factors for dunefield evolution but that an understanding of the relative thresholds of each factor as the main trigger of dune emplacement phases remains a challenge . ADDITIONAL INDEX WORDS: Dune emplacement phases, climate, sea level changes. INTRODUCTION of the longest records of dunefield evolution in the world, The Southern Queensland (QLD) subtropical coastline representing an ideal site where models of long-term dunefield represents a major depositional system containing 3 of the evolution can be tested (Cooper, 1958; Pye and Bowman, 1984; largest sand islands in the world: Fraser, North Stradbroke and Thom, 1978; Young et al., 1993). -
18. Geological History of the Ryukyu Islands-`
58 [Vol. 11, 18. Geological History of the Ryukyu Islands-` By Shoshiro HANZAWA. (Comm. by H. YABE, M.LA., Feb. 12. 1935.) The geological history of the Ryukyu Islands begins with the Permian Period. The marine Permian formation (slate, sandstone, limestone with Neoschwagerina) was intruded by igneous rocks during late Permian or early Mesozoic time, thus forming the nucleous of the future Ryukyu Cordillera. After a long period of subaerial denudation, the older rocks suffered from crustal movements during a certain part of the Mesozoic Era ; that is, they were in parts contorted, faulted, and regionally metamorphosed into crystalline schists and phyllites. The great Ryukyu Cordillera thus arose very nearly from the present site of the Ryukyu Islands. Owing to the absence in these Islands of any formation younger than the Permian and older than the Upper Eocene, the exact age of the intense crustal deformation is uncertain. The Ryukyu Cordillera, after subjection to prolonged subaerial denuda tion, was divided into a number of mountain masses. Long after the subaerial denudation, the erosional surface of the Permian formation was transgressed by the sea in the Akitu Period (the Japanese Palaeogene), during which the Miyara beds, comprising the Pellatispira limestones of Isigaki and Kobama, was deposited. Stampian and Aquitanian rocks are missing both in the Ryukyu. Islands and in Taiwan. During these periods orogenesis, dynamo metamorphism, and marine regression occurred in Taiwan. In the Ryukyu Islands during the same periods, similar land conditions prevailed, while the Miyara beds were tilted and denuded, but not metamorphosed. These stages correspond to the Takatiho Period of Emergence. -
BMC Evolutionary Biology (2019) 19:23
Jowers et al. BMC Evolutionary Biology (2019) 19:23 https://doi.org/10.1186/s12862-019-1347-x RESEARCHARTICLE Open Access Biogeography of Korea’s top predator, the yellow-throated Marten: evolutionary history and population dynamics Michael Joseph Jowers1,2* , Santiago Sánchez-Ramírez3, Euigeun Song2, Samer Angelone4, Taeyoung Choi2, Inna Voloshina5 and Donggul Woo2 Abstract Background: Peninsulas often harvest high genetic diversity through repeated southward migrations of species during glacial maxima. Studies addressing within-species evolutionary responses to climate fluctuations in northeast Asia are limited compared to other regions of the world, and more so in the Korean Peninsula. In this study, we conducted the first population-level study of the yellow-throated marten, Martes flavigula, from the Korean Peninsula, Russian, Taiwanese and Chinese localities in a biogeographic framework using mitochondrial (cyt-b, nd2, cr) and nuclear gene sequencing (ghr). Results: Bayesian analyses revealed a rather young population, with a split from the most recent common ancestor at around 125 kya. Martes flavigula likely colonized the Korean Peninsula from Mainland China through the Yellow Sea twice, ca. 60 kya and 20 kya. Korean martens diversified during the Late Pleistocene with at least two dispersal events out of Korea,towardsthesouthwesttoTaiwan(ca.80kya)andtowardstheNorthintoRussiaandeasternChina;mostlikely after the Last Glacial Maxima (ca. 20 kya). We argue that the lack of population structure and mixed populations is possibly a consequence of the high dispersal capability of the species. The Bayesian skyline plot revealed a population decline within the last 5000 years, suggesting potential negative biotic and anthropogenic effects in the area. We find that local populations are not genetically differentiated, therefore no perceptible population structure within Korea was found.