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Prismatic slip of A12O3 single crystals below 1000°C in compression under hydrostatic pressure Prismatic slip of A12O3 single crystals below 1000°C in compression under hydrostatic pressure

Alumina single crystals were compressed perpendicular to the [0001] axis at a constant strain rate between 20° and 950°C. At r>200°C, failure was suppressed by_hydrostatic pressures of 500 to 1500 MPa. Prismatic slip {1120}〈1100〉 was deduced from optical observations of the lateral surfaces and from stress‐optical features in thin sections cut from the specimens. The critical resolved...
Authors
J. Castaing, J. Cadoz, Stephen H. Kirby

IASPEI workshop: Seismic modeling of laterally varying structures IASPEI workshop: Seismic modeling of laterally varying structures

During the past 10 years, significant progress has been made in the methods of collection and analysis of seismic reflection and refraction data. This progress has led to the development of new models for the structure and composition of the earth's crust, based on sophisticated analysis of numerous profiles in many areas of geologic importance. The third triannual meeting of the IASPEI
Authors
Walter D. Mooney

Seismic stratigraphic characteristics of upper Louisiana continental slope: an area east of Green Canyon Seismic stratigraphic characteristics of upper Louisiana continental slope: an area east of Green Canyon

A high-resolution seismic reflection survey was conducted in a small area of the upper Louisiana Continental Slope known as Green Canyon Area. This area includes tracts 427, 428, 471, 472, 515, and 516, that will be offered for sale in March 1982 as part of Lease Sale 67. The sea floor of this region is, slightly hummocky and is underlain by salt diapirs that are mantled by early...
Authors
Arnold H. Bouma, Mary H. Feeley, Jack L. Kindinger, Charles E. Stelting, Thomas W.C. Hilde

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: December 1981 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: December 1981

The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
J.B. Townshend, J.E. Papp, E.A. Sauter

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1981 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1981

The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
J.B. Townshend, J.E. Papp, E.A. Sauter
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