Late Quaternary Paleo-environments of Archaeological Sites in Japan and East Asia. Glacio-hydro-isostasy and Underwater Jomon Sites along the West Coast of Kyushu, Japan.
Masao NakadaYasuo MaedaShinji NagaokaYūsuke YokoyamaJun’ichi OkunoEiji MatsumotoYoshiaki MatsushimaHiroshi SatoIsao MatsudaYoshikazu Sampei
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Abstract:
西九州には縄文早期の鷹島遺跡や数多くの縄文前期から中期の水中遺跡が存在する. これらの遺跡が水没したおもな原因は, 最終氷期の大陸氷床の融解に伴うハイドロアイソスタシーに帰すことができる. 本論文では, このことを定量的に示した. この研究をさらに進めることは, 両極の氷床モデルや地殻とマントルのレオロジーを推定するのに非常に有益である.Keywords:
Isostasy
The three major sections of this volume include six chapters describing the regional Quaternary geology of Canada, two describing the Quaternary geology and climatic history of Greenland, and six that review applied Quaternary geology in Canada, including chapters on paleobotanical analysis, geodynamics, geomorphic processes, terrain geochemistry, Quaternary resources, and the influence of the Quaternary on the present environment. Of the five accompanying plates, three depict eleven stages of Quaternary paleogeographic change between 18,000 B.P. and 5,000 B.P.; one depicts the retreat of the ice from between 18,000 B.P. and the Recent; and another reviews the status of Quaternary geologic mapping in Canada, with an extensive bibliography on the back.
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The three major sections of this volume include six chapters describing the regional Quaternary geology of Canada, two describing the Quaternary geology and climatic history of Greenland, and six that review applied Quaternary geology in Canada, including chapters on paleobotanical analysis, geodynamics, geomorphic processes, terrain geochemistry, Quaternary resources, and the influence of the Quaternary on the present environment. Of the five accompanying plates, three depict eleven stages of Quaternary paleogeographic change between 18,000 B.P. and 5,000 B.P.; one depicts the retreat of the ice from between 18,000 B.P. and the Recent; and another reviews the status of Quaternary geologic mapping in Canada, with an extensive bibliography on the back.
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Applications of Glacial, Periglacial and Quaternary Research Quaternary Environments Marine Aggregates and their Quaternary Origin Engineering in Quaternary Sediments Problems of Permafrost Engineering Quaternary Deposits and Groundwater Pollution Pollen-Climate Response Holocene Lake Sediments Sea-Level Changes.
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The three major sections of this volume include six chapters describing the regional Quaternary geology of Canada, two describing the Quaternary geology and climatic history of Greenland, and six that review applied Quaternary geology in Canada, including chapters on paleobotanical analysis, geodynamics, geomorphic processes, terrain geochemistry, Quaternary resources, and the influence of the Quaternary on the present environment. Of the five accompanying plates, three depict eleven stages of Quaternary paleogeographic change between 18,000 B.P. and 5,000 B.P.; one depicts the retreat of the ice from between 18,000 B.P. and the Recent; and another reviews the status of Quaternary geologic mapping in Canada, with an extensive bibliography on the back.
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The three major sections of this volume include six chapters describing the regional Quaternary geology of Canada, two describing the Quaternary geology and climatic history of Greenland, and six that review applied Quaternary geology in Canada, including chapters on paleobotanical analysis, geodynamics, geomorphic processes, terrain geochemistry, Quaternary resources, and the influence of the Quaternary on the present environment. Of the five accompanying plates, three depict eleven stages of Quaternary paleogeographic change between 18,000 B.P. and 5,000 B.P.; one depicts the retreat of the ice from between 18,000 B.P. and the Recent; and another reviews the status of Quaternary geologic mapping in Canada, with an extensive bibliography on the back.
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The underlying theory pertaining to the shape of the earth is briefly reviewed. The operations and results that have led to the theory of isostasy are given. Hopfner's recent inquiry into the problem is cited in which he has shown that by means of strict potential theory isostatic reductions are highly questionable, and, furthermore, that there is no need to postulate an isostatic state in order to account for gravity data. High points of geologic and seismologic data are also cited. The conclusion is that the theory of isostasy. rests upon a much more insecure foundation than has heretofore been supposed.
Isostasy
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Physical geography of South America quaternary tectonics of South America quaternary volcanism in South America characteristics of the quaternary volcanic zones quaternary of the alluvial basins structure and quaternary stratigraphy quaternary of the alluvial basins aeolian features - paleoclimate quaternary of the South American Highlands - Highlands of the Brazilian Shield quaternary of the South American Highlands - case studies in Southeast Brazil Campos de Jordao and Serra de Itatiaia quaternary of the South American Highlands the Northern and Southern Highlands the glaciers and glacial landforms of South America late Cenozoic glacial history of the Andes - late Miocene-Middle Pleistocene, the late quaternary (isotope stages 7-3), the last glaciation maximum (isotope stage 2), the late-glacial and holocene quaternary gravel formations of southern South America quaternary palaeolakes of the arid regions of South America quaternary geocryogenic features of South America and the Falkland Islands (Islas Malvinas) quaternary of the South American coasts quaternary palnological studies in South America - pre-quaternary-late-quaternary, the last glaciation palaeoecology of the late-glacial and holocene intervals the quaternary of South America - overview and implications.
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This paper studys system of quaternary sience in the light of systen science's regulation ,and establishes theory quaternary, technology quaternary and applied quaternary .On this background, applied quaternary research's the object, content and nature is discussed in this paper .
Protein quaternary structure
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Marginal faults of the five petroliferous basins in the west of China all up-thrust to the top. Pre-Quaternary strata thrust over Quaternary sediments, indicating that the petroliferous basins in the west of China and the surrounding older mountains were formed in Quaternary period. Because the basins were formed with the formation of compressive anticlines in the Quaternary structural layers, natural gas has been successfully found in the Quaternary structures in the Chaidamu basin. Therefore, attention should be paid to Quaternary oil and gas pools. The following four conclusions are given:
(1)The five large petroliferous basins in the west of China were formed in Quaternary.
(2)Quaternary anticlinal structure was made by Quaternary compressive structural force.
(3)Quaternary oil and gas pools of Chaidamu basin are self-generating and self-storage type.
(4)Even if there are no conditions to generate oil in the Quaternary, the following phenomenon should be taken into account that after pre-Quaternary oil and gas pools were destroyed by faults, the oil and gas could have migrated into Quaternary structural layers to form secondary oil and gas pools. So, we should pay attention to explorations of Quaternary oil and gas.
Anticline
Protein quaternary structure
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Abstract Gravity and topographic/bathymetric data are used for gravimetric modelling of Moho discontinuity by hydrostatic or flexural theories of the isostasy. Here, two hydrostatic models, based on the Vening Meinesz-Moritz (VMM) principle, and two based on the loading theories and flexural isostasy are compared over Tibet Plateau. It is shown that theMoho models generated based on theVMM theory and flexural isostasy have very good agreements if the mean compensation depth and the mean elastic thickness are selected properly. However, the model computed based on the flexural isostasy is smoother. A more rigorous flexural model, which considers the membrane stress and curvature of the lithosphere, is used to model the Moho surface over the study area. It is shown that the difference between the Moho models, derived by considering and ignoring these parameters, is not significant. By combination of the flexural and VMM hydrostatic models new mathematical formulae for crustal gravity anomalies are provided and it is shown that the crustal gravity anomalies produced by them are also equivalent.
Isostasy
Hydrostatic equilibrium
Discontinuity (linguistics)
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