William R. Dickinson's Books

Temper Sands in Prehistoric Oceanian Pottery

Geotectonics, Sedimentology, Petrography, Provenance

By: William R. Dickinson

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Temper Sands in Prehistoric Oceanian Pottery

Geotectonics, Sedimentology, Petrography, Provenance

By: William R. Dickinson

Oceanian ceramic cultures making earthenware pottery spread during the past 3500 years through a dozen major island groups spanning 6000 km of the tropical Pacific Ocean from western Micronesia to western Polynesia. Island potters mixed sand as temper into clay bodies during ceramic manufacture. The nature of island sands is governed by the geotectonics of hotspot chains, island arcs, subduction zones, backarc basins, and remnant arcs as well as by sedimentology. Because small islands with bedrock exposures of restricted character are virtual point sources of sand, many tempers are diagnostic of specific islands. Petrographic study of temper sands in thin section allows distinction between indigenous pottery and exotic pottery transported from elsewhere. Study of 2223 prehistoric Oceanian potsherds from 130 islands and island clusters indicates the nature of Oceanian temper types and documents 105 cases of interisland transport of ceramics over distances typically

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Page Count

176

Publisher

Geological Society of America

Published Date

ISBN 10

0813724066

ISBN 13

9780813724065

Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona

By: William R. Dickinson

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Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona

By: William R. Dickinson

Mid-Tertiary strata exposed as tilted homoclines along the flanks of the San Pedro trough and across broad uplands north of the Catalina core complex are assigned to the following formations, each of which includes informal local members and facies: (a) Mineta Formation, mid-Oligocene redbeds including both conglomeratic fluvial and finer-grained lacustrine deposits; (b) Galiuro Volcanics, including lavas and domes, air-fall and ash-flow tuffs, and intercalated volcaniclastic strata of late Oligocene to earliest Miocene age; (c) Cloudburst Formation, also of late Oligocene and earliest Miocene age but including a sedimentary upper member of conglomeratic strata as well as a volcanic lower member correlative with part of the Galiuro Volcanics; and (d) San Manuel Formation, composed of lower Miocene alluvial fan and braidplain deposits that display contrasting clast assemblages in different areas of exposure. Generally correlative Oligocene-Miocene strata exposed south of the Catalina core complex are assigned to the Pantano Formation, which contains similar lithologic components. Less-deformed Neogene strata of post-mid-Miocene basin fill are assigned to the Quiburis Formation along the San Pedro trough, but stratigraphic equivalents elsewhere lack adequate nomenclature. High benchlands mantled by paleosols mark the highest levels of Neogene aggradation. Successive stages of subsequent erosional dissection are recorded by multiple terrace levels incised into basin fill. Key exposures of syntectonic mid-Tertiary sedimentary sequences in several local subareas reveal typical structural and stratigraphic relationships. Multiple fault blocks expose pre-Tertiary bedrock overlain by tilted mid-Tertiary strata confined to intervening half-grabens. Bounding syndepositional faults dip southwest and associated homoclines dip northeast. Fanning dips and buttress unconformities reflect progressive tilt and burial of eroding fault blocks. Dips of block-bounding faults are inversely proportional to the ages of the faults. Steeper dips for younger faults suggest either progressive erosion of successive listric faults or progressive rotation of successive planar faults. Uniformly moderate to steep dihedral angles between fault surfaces and offset homoclinal bedding imply that the faults dipped more steeply near the surface when syntectonic mid-Tertiary strata were subhorizontal. Although the inference of listric faulting best links apparent strands of the Catalina detachment system, the alternate interpretation of rotational normal faulting is compatible with local structural relationships including tilt of porphyry copper orebodies. Within the San Pedro trough, multiple homo clines of mid-Tertiary strata are exposed locally in tilt-blocks exhumed by Neogene erosion from beneath nearly flat-lying basin fill of the Quiburis Formation. Faults bounding the mid-Tertiary exposures include backtilted strands of the Catalina detachment system, somewhat younger listric or rotational normal faults, and steeper basin-range normal faults that display offsets both synthetic and antithetic to the flanks of the San Petro trough. In Cienega Gap, flanking the Tucson Basin, multiple tilt-blocks of the Pantano Formation form part of the upper plate of the Catalina detachment system. Initial construction of alluvial fans by generally westward paleoflow was followed by ponding of lacustrine environments along the foot of secondary breakaway scarps that also generated massive megabreccia deposits. In summary, syntectonic Oligocene to Miocene sedimentation succeeded a prominent pulse of polymodal mid-Tertiary volcanism and was coeval with mylonitic deformation and detachment faulting along the flank of the Catalina core complex. The headwall rupture for the detachment system migrated westward from an initial position along the range front of the Galiuro Mountains. After mid-Miocene time, accumulation and subsequent dissection of essentially undeformed basin fill was accompanied by basin-range block faulting. The most challenging structural issue is whether fault strands of the Catalina detachment system are interconnected or are disconnected rotational segments.

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Page Count

130

Publisher

Geological Society of America

Published Date

ISBN 10

0813722640

ISBN 13

9780813722641

Tectonosedimentary Relations of Pennsylvanian to Jurassic Strata on the Colorado Plateau

By: William R. Dickinson

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Tectonosedimentary Relations of Pennsylvanian to Jurassic Strata on the Colorado Plateau

By: William R. Dickinson

Following this discovery and further detrital-zircon studies of Mesozoic strata on the Colorado Plateau, Dr. Dickinson began preparing this volume in order to identify key aspects of the sedimentary and tectonic history of Mesozoic strata of the Colorado Plateau and directly adjacent areas. He divided the strata into seven depositional systems"--

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196

Publisher

Geological Society of America

Published Date

ISBN 10

081372533X

ISBN 13

9780813725338

We Have the War Upon Us

The Onset of the Civil War, November 1860-April 1861

By: William J. Cooper

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We Have the War Upon Us

The Onset of the Civil War, November 1860-April 1861

By: William J. Cooper

In this carefully researched book William J. Cooper gives us a fresh perspective on the period between Abraham Lincoln’s election in November 1860 and the firing on Fort Sumter in April 1861, during which all efforts to avoid or impede secession and prevent war failed. Here is the story of the men whose decisions and actions during the crisis of the Union resulted in the outbreak of the Civil War. Sectional compromise had been critical in the history of the country, from the Constitutional Convention of 1787 through to 1860, and was a hallmark of the nation. On several volatile occasions political leaders had crafted solutions to the vexing problems dividing North and South. During the postelection crisis many Americans assumed that once again a political compromise would settle yet another dispute. Instead, in those crucial months leading up to the clash at Fort Sumter, that tradition of compromise broke down and a rapid succession of events led to the great cataclysm in American history, the Civil War. All Americans did not view this crisis from the same perspective. Strutting southern fire-eaters designed to break up the Union. Some Republicans, crowing over their electoral triumph, evinced little concern about the threatened dismemberment of the country. Still others—northerners and southerners, antislave and proslave alike—strove to find an equitable settlement that would maintain the Union whole. Cooper captures the sense of contingency, showing Americans in these months as not knowing where decisions would lead, how events would unfold. The people who populate these pages could not foresee what war, if it came, would mean, much less predict its outcome. We Have the War Upon Us helps us understand what the major actors said and did: the Republican party, the Democratic party, southern secessionists, southern Unionists; why the pro-compromise forces lost; and why the American tradition of sectional compromise failed. It reveals how the major actors perceived what was happening and the reasons they gave for their actions: Lincoln and Jefferson Davis, Stephen A. Douglas, William Henry Seward, John J. Crittenden, Charles Francis Adams, John Tyler, James Buchanan, and a host of others. William J. Cooper has written a full account of the North and the South, Republicans and Democrats, sectional radicals and sectional conservatives that deepens our insight into what is still one of the most controversial periods in American history.

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362

Publisher

Vintage

Published Date

ISBN 10

0307960889

ISBN 13

9780307960887

Doing Qualitative Research

By: Benjamin F. Crabtree,William L. Miller

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Doing Qualitative Research

By: Benjamin F. Crabtree,William L. Miller

The long-awaited third edition of Doing Qualitative Research by Benjamin F. Crabtree and William L. Miller is out! Co-create your own inspired research stories with this reader-friendly book on qualitative methods, design, and analysis. With an abundance of clinical research examples, discussion questions, and concise descriptions of qualitative methods, this text encourages researchers to learn by doing and actively experiment with the tools and concepts presented throughout the book.

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Page Count

457

Publisher

SAGE Publications

Published Date

ISBN 10

1506302807

ISBN 13

9781506302805

Book's by William R. Dickinson

Temper Sands in Prehistoric Oceanian Pottery

Temper Sands in Prehistoric Oceanian Pottery

Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona

Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona

Tectonosedimentary Relations of Pennsylvanian to Jurassic Strata on the Colorado Plateau

Tectonosedimentary Relations of Pennsylvanian to Jurassic Strata on the Colorado Plateau

We Have the War Upon Us

We Have the War Upon Us

Doing Qualitative Research

Doing Qualitative Research

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