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Quaternary adder, subtractor and multiplier using quaternary multiplexer
International Journal of Electronics, 1987Multiplexers, as in the case of binary, are very useful building blocks in the development of quaternary systems. The use of quaternary multiplexer (QMUX) in the implementation of quaternary adder, subtractor and multiplier is described in this paper. Quaternary coded decimal (QCD) adder/subtractor and quaternary excess-3 adder/subtractor realization ...
Krishnan, G, Shivaprasad, AP
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Quaternary Science Reviews, 2016
Abstract We review the historical purposes and procedures for stratigraphical division and naming within the Quaternary, and summarize the current requirements for formal partitioning through the International Commission on Stratigraphy (ICS). A raft of new data and evidence has impacted traditional approaches: quasi-continuous records from ocean ...
Philip L. Gibbard, John Lewin
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Abstract We review the historical purposes and procedures for stratigraphical division and naming within the Quaternary, and summarize the current requirements for formal partitioning through the International Commission on Stratigraphy (ICS). A raft of new data and evidence has impacted traditional approaches: quasi-continuous records from ocean ...
Philip L. Gibbard, John Lewin
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Science, 2008
In the News Focus by R. A. Kerr (“A time war over the period we live in,” 25 January, p. [402][1]), stratigraphers wish to rid the geological time scale of the Quaternary, on the grounds that “boundaries on the time scale are not delineated by climate changes.” How very odd, then, that ...
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In the News Focus by R. A. Kerr (“A time war over the period we live in,” 25 January, p. [402][1]), stratigraphers wish to rid the geological time scale of the Quaternary, on the grounds that “boundaries on the time scale are not delineated by climate changes.” How very odd, then, that ...
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Boreas, 1980
Book reviewed in this article:Aharon Horowitz: The Quaternary of ...
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Book reviewed in this article:Aharon Horowitz: The Quaternary of ...
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2011
Abstract Minnesota was affected by Laurentide ice lobes of different provenance. Lake Agassiz drained through Minnesota. Tills in Minnesota are correlated on the basis of their lithologic and mineralogic composition. A number of dating methods along with weathering horizons and truncated paleosols have been used to strengthen correlations in pre-MIS ...
Carrie Jennings, Mark D. Johnson
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Abstract Minnesota was affected by Laurentide ice lobes of different provenance. Lake Agassiz drained through Minnesota. Tills in Minnesota are correlated on the basis of their lithologic and mineralogic composition. A number of dating methods along with weathering horizons and truncated paleosols have been used to strengthen correlations in pre-MIS ...
Carrie Jennings, Mark D. Johnson
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1991
Abstract Quaternary geology studies in most of the Arctic Archipelago inevitably have focused on the age and extent of Pleistocene glaciations. In the islands south of Parry Channel (Fig. 19.1), repeated advances of temperate glaciers spreading from continental dispersal centres have eroded and deposited a wide range of landforms. There,
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Abstract Quaternary geology studies in most of the Arctic Archipelago inevitably have focused on the age and extent of Pleistocene glaciations. In the islands south of Parry Channel (Fig. 19.1), repeated advances of temperate glaciers spreading from continental dispersal centres have eroded and deposited a wide range of landforms. There,
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1993
Contributors. Access to the Countryside. Foreword. Preface. 1. Introduction J.E. Gordon, D.G. Sutherland. 2. The Quaternary in Scotland D.G. Sutherland, J.E. Gordon. 3. The Shetland Islands D.G. Sutherland, J.E. Gordon, H.J. Birks, J. Birnie. 4. The Orkney Islands D.G. Sutherland, J.E. Gordon. 5. Caithness D.G. Sutherland, J.E. Gordon, H.J.B. Birks. 6.
D. G. Sutherland, John E. Gordon
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Contributors. Access to the Countryside. Foreword. Preface. 1. Introduction J.E. Gordon, D.G. Sutherland. 2. The Quaternary in Scotland D.G. Sutherland, J.E. Gordon. 3. The Shetland Islands D.G. Sutherland, J.E. Gordon, H.J. Birks, J. Birnie. 4. The Orkney Islands D.G. Sutherland, J.E. Gordon. 5. Caithness D.G. Sutherland, J.E. Gordon, H.J.B. Birks. 6.
D. G. Sutherland, John E. Gordon
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What status for the Quaternary?
Boreas, 2005The status of the Quaternary, long regarded as a geological period effectively coincident with the main climatic deterioration of the current Ice Age, has recently been questioned as a formal stratigraphic unit. We argue here that it should be retained as a formal period of geological time.
Gibbard, PL +12 more
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