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Principles of Practical Tectonic Analysis of Cratonic Regions : With Particular Reference to Western North America : Lecture Notes in Earth Sciences - Henry V. Lyatsky

Principles of Practical Tectonic Analysis of Cratonic Regions : With Particular Reference to Western North America

Lecture Notes in Earth Sciences

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Steep crystalline-basement faults, commonly indicated by potential-field anomalies, played a crucial role in evolution of continental cratonic platforms. In the Phanerozoic Western Canada Sedimentary Province, history of crustal block movements and warps is reconstructed from the distribution of depocenters, lithofacies and structures in structural-formational tages in sedimentary cover. Each tage is a rock succession formed during a particular tectonic stage; regional tectonic restructuring closes each stage, and the next stage represents a new tectonic regime. Practical tectonic analysis, based on observation of rocks and geophysical data, is a reliable guide for deciphering a region's geologic history and for resource exploration.

Basic Notions and Definitions
Intrinsic difficulties in describing geologic objectsp. 1
Tectonic definition of continents, and of cratons as their fundamental constituentsp. 2
Interaction of indigenous and external tectonic forces acting on evolving cratonsp. 9
Recognition of vertical and horizontal tectonic units in cratonsp. 12
Early approaches to subdividing the crystalline metamorphic basement of the North American cratonp. 16
Nomenclature of lateral tectonic units relevant to tectonic platformsp. 18
Transformation of the notion miogeosynclinep. 20
Review of pervious approaches to discrimination of tectonic units in platformal sedimentary cover in the North American cratonp. 23
Ambiguities in the definition of Sloss' Sequencesp. 25
Other sequence stratigraphiesp. 28
Tectonic significance of unconformities in the geologic recordp. 29
Approaches to rock-unit classification in the North American Stratigraphie Codep. 30
Structural-Formational, Tectonic Etages as Fundamental Units of Regional Tectonic Analysis
Difficulties in extracting tectonic information from rock characteristicsp. 32
Regional tectonic restructuring episodes as a basis for division of a geologic record into tectonic unitsp. 33
The concept of rock-made tectonic etages and tectonic stagesp. 36
Structural-formational etages as tectonic units in a regional stratigraphic recordp. 41
Epistemological roots of current hypotheses about the cratonic areas of North Americap. 54
Uses of tectonic etages and stages to improve the objectivity of regional tectonic analysisp. 49
Regional Tectonic Analysis of the Western Canada Sedi-Mentary Province in Alberta, Saskatchewan and Adjacentparts of the U.S.
Reasons for the choice of western Canada as an example for detailed studyp. 57
Tectonic étage and stage between the Middle Cambrian and the Silurianp. 65
Tectonic étage and stage between the Devonian and the Early Mississippianp. 79
Tectonic étage and stage between the Late Mississippian and the Triassicp. 97
Tectonic étage and stage between the Jurassic and the Early Cretaceousp. 105
Tectonic étage and stage between the late Neocomian and the middle Late Cretaceousp. 113
Tectonic étage and stage between the Late Cretaceous Campanian and the Early Tertiaryp. 121
Tectonic étage and stage between the Pliocene and the Recentp. 131
Methodological Reasons for using Structural-Formational Étages in Regional Tectonic Analysis
Methods of outlining tectonic regions in cratonsp. 136
Perieratons, forelands, foredeeps and their corresponding sedimentary basinsp. 138
Importance of correct recognition of the tectonic nature of sedimentary basins for correct regional tectonic analysisp. 144
Platformal cratonic basins and arches, and their relationships through geologic historyp. 149
Return to confirmed facts, away from speculative models and groundless hypothesesp. 157
Reconstruction of Structural History of a Craton Byusing Structural-Formational Étages in its Cover and Pre-Cover Volcano-Sedementary Basins
Outlines of the Proterozoic Laurentian craton in North Americap. 159
Tectonic zoning of the interior of the Laurentian cratonp. 170
Role or major Precambrian fault families in pre-cover tectonics of Canadian cratonic areasp. 196
Guiding importance of Precambrian volcano-sedimentary basins for designation of regional tectonic stages during the cratonic megastage before the deposition of Phanerozoic platformal coverp. 204
Designation of lateral tectonic units in the Alberta Platform basement: a discussionp. 212
Lessons from the failure of initial attempts to unravel tectonic history of the structural framework in the basement of the Alberta Platformp. 222
Construction of depth-to-top maps on regional marker surfaces, and their tectonic utilityp. 225
Cratonic shields and platforms as contrasting features in paleogeography and tectonicsp. 232
Finding an Adequate Regional Tectonic Interpretation Constrained by Mappable Properties of Rocks
Rationale in tectonic studies of shield terrainsp. 238
Rationale in tectonic studies in Alberta and other cratonic platformsp. 243
Craton's boundaries and how to define themp. 253
Place of Neotectonic and Current Tectonic Crustal Movements in Regional Tectonic Studies
Manifestations of neotectonic and current tectonic crustal movements, and their significancep. 259
Insights into neotectonics from the distribution of the latest Cenozoic deposits and drainage systemsp. 262
Fracture fabrics in the Western Canada Sedimentary Province: their identification and classificationp. 267
Second look at geophysical data with the benefit of information about neotectonic and current tectonic activityp. 279
Main classes of vertical tectonic crustal movements as manifested in the neotectonicand current stagesp. 287
Conclusions: Advantages of Practical Tectonics
Historical pragmatic character of geology as a field of human activity and knowledgep. 290
Social needs for rock-based regional tectonicsp. 292
Ability of practical tectonics to meet the demands of the 21 st centuryp. 295
Significance of rock-based tectonics in the development of sciences about the Earthp. 300
Some obvious deficiencies of physical models that ignore rock-based tectonic constraintsp. 303
Picture of global tectonics from the achievements of practical tectonic studiesp. 306
Theory and practice in rock-based tectonicsp. 308
Welding science and practicality in rock-based regional tectonics a historical lookp. 310
Referencesp. 313
Table of Contents provided by Publisher. All Rights Reserved.

ISBN: 9783540653462
ISBN-10: 3540653465
Series: Lecture Notes in Earth Sciences
Audience: Professional
Format: Book with Other Items
Language: English
Number Of Pages: 372
Publisher: Springer-Verlag Berlin and Heidelberg Gmbh & Co. Kg
Country of Publication: DE
Dimensions (cm): 23.5 x 15.5  x 1.27
Weight (kg): 0.61