Showing papers in "Engineering Geology in 1970"

TL;DR: In this paper, a review of laboratory testing of rock specimens in uniaxial tension and compression is presented, with the aim of selecting equipment, procedures and tolerances as a basis for test standardization.

TL;DR: The tensile strength of a variety of granitic rocks from California were found to be inversely proportional to the amount of quartz content as mentioned in this paper, which was attributed to textural differences as suggested by high-quartz rocks composed of equidimensional grains showing little crystal intergrowth, or interlocking, whereas low-QUartz rocks consist of interlocking laths and prisms.

TL;DR: In this article, the relationship between fabric and palaeosalinity data for Leda clay has been investigated using X-ray diffraction studies, showing that fabric was more affected by conditions at the time of deposition than by subsequent events.

TL;DR: In this paper, a preliminary review of the large field embraced by climate and engineering aspects of the weathering of rock is presented, where factors affecting weathering and the development of residual soils in general and their relationship to the engineering classifications of weathered materials are briefly discussed.

TL;DR: The engineering properties of silcretes and ferricrete depend upon their mineralogical composition and the physico-chemical properties of their constituents as discussed by the authors, and some of these properties can be tested using standard tests but others, particularly self-bonding varieties, should be tested differently.

TL;DR: In this paper, the relationship between fabric anisotropies of Vicksburg loess and the orientation of applied stress distribution was investigated, quantitatively, and the results indicated that fabric anotropies in Vicksburgh loess are reflected by definite variation in triaxial shear strength of dry and moist specimens.

TL;DR: In this article, the ionic increase almost doubled in the Great Lakes - St. Lawrence River drainage basin, whereby about 20-50% of the ions are believed to be contributed from polluted atmospheres surrounding the lakes.

TL;DR: This paper found that the preferred orientation of skeletal grains of Vicksburg loess has a significant influence on directional shear strength, and that failure surfaces of direct shear tests also reveal steplike features which face the oncoming opposed surface.

TL;DR: The Glendora tunnel as mentioned in this paper was constructed as part of a construction program to distribute imported northern California water within the southern part of the state, where the Sierra Madre fault zone is located.

TL;DR: In this paper, a device has been developed to obtain N-size oriented bore cores in diamond drilling operations in both the Southern and Newcastle Coalfields of the Sydney Basin, New South Wales, and the Bowen Basin, Queensland.

TL;DR: In this article, the use of tracers in various engineering fields including ocean, harbour, coastal and river engineering and some special applications of tracer technology, e.g., in pollution control.

TL;DR: In most cases, in situ densities can be determined by the shallow core-barrel method, which can be used to obtain both wet and dry density values as discussed by the authors, which are well within the accuracy limitations demanded by exploratory hydrological or geophysical surveys.