Optically stimulated luminescence (OSL) dating in the Amazonian wetlands
By: edited by Sonia Hatsue Tatumi, Dilce de Fátima Rossetti and Emílio Alberto Amaral Soares
Publisher: Cambridge Scholars Publishing
Published: 2020
Place of publication: Newcastle upon Tyne
Language: eng
Number of pages: 127
ISBN-13: 9781527556065; 9781527554306
Copyright date: 2020
Subjects: Geochronometry; Geology; Earth sciences; Historical geology; Stratigraphy
Description: Optically stimulated luminescence (OSL) dating has proven to be extremely useful for establishing the Late Quaternary chronological framework in many areas of the Brazilian territory. In this region dominated by tropical climate, OSL dating can be more extensively applied than radiocarbon dating due to the generally low potential for the preservation of organic matter in sedimentary samples. This problem is especially critical in areas of the Amazonian lowlands, because of the hot climate and high precipitation rates. The abundance of quartz grains deposited in fluvial and aeolian environments.
Notes: Includes bibliographical references.
Table of contents: title: Intro; title: Table of Contents; title: Preface; title: Prologue; title: Chapter One; title: 1.1 Introduction; title: 1.2 The OSL theory; title: 1.2.1 Principles; title: 1.2.2 Band model applied to quartz OSL; title: 1.2.3 OSL application in dating; title: 1.2.4 Determination of equivalent dose; title: SAR protocol; title: 1.2.5 Determination of annual dose rate; title: 1.2.6 Results of the OSL dating technique applied to Amazonian sediments; title: 1.2.6.1 Annual dose rates; title: Chapter Two; title: 2.1 Presentation; title: 2.2 Geology; title: 2.2.1 General framework; title: 2.2.2 Stratigraphy; title: 2.2.3 Sediment types and depositional environments; title: 2.3 Motivation to improve the chronological framework; title: 2.3.1 Geological history of river basins; title: 2.3.2 Basic geological mapping; title: 2.3.3 Climatic versus neotectonic influence; title: 2.3.4 Origin and evolution of the biodiversity; title: 2.3.5 Global changes; title: Chapter Three; title: 3.1 Presentation; title: 3.2 Dating problems and methodological approach; title: 3.2.1 Environmental restriction; title: 3.2.2 Tropical weathering and pedogenesis; title: 3.2.3 Water-table oscillation; title: 3.2.4 Sediment deformation; title: Chapter Four; title: 4.1 Presentation; title: 4.2 Fluvial terraces; title: 4.2.1 Strech of the Solimões-Amazon system between Codajás and Manaus; title: 4.2.2 Low Negro River; title: 4.2.3 Madeira River; title: 4.2.4 Branco River; title: 4.3 Viruá megafan; title: 4.4 Aeolian dunes; title: Chapter Five; title: 5.1 Improving the luminescence dating technique; title: 5.2 Perspectives of research applications; title: 5.3 Final remarks; title: References