Geosciences
Definition and range of types CONGLOMERATES are all those coarse-grained sedimentary rocks that consist dominantly of gravel-sized (>2mm) clasts. They are also known as rudites. Strictly speaking, conglomerates should contain … Read More
The cone penetration or cone penetrometer test (CPT) is a method used to determine the geotechnical engineering properties of soils and delineating soil stratigraphy. It was initially developed in the … Read More
Explain the importance of sedimentary rocks and summarize the part of the rock cycle that pertains to sediments and sedimentary rocks. List the three categories of sedimentary rocks. Most of … Read More
Major undersea earthquakes occasionally set in motion a series of large ocean waves that are known by the Japanese name tsunami (“harbor wave”). Most tsunamis are generated by displacement along … Read More
Rock Quality Designation (RQD) Rock Quality Designation (RQD) is a measure of quality of rock core taken from a borehole. RQD signifies the degree of jointing or fracture in a … Read More
Engineering geological mapping Large-scale maps are those devoted to the depiction of relatively small surface areas in great detail and range from about 1:1 000 (for the geology of a … Read More
Rock Falls Natural or constructed rock slopes which are, on the scale of the total slope, inherently stable may, through a process of natural decay or as a consequence of … Read More
Slope Stability The stability of a slope depends to a great extent upon discontinuities (Fig. 1). Even in a carefully excavated slope stress relief may induce joint opening which allows … Read More
Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. Topaz crystallizes in the orthorhombic system, and its crystals are mostly prismatic terminated by pyramidal and … Read More
