ALBERT

Description / Table of Contents: "Physical Properties of Rocks - a Workbook" is a symbiosis of a brief description of physical fundamentals of rock properties (based on typical experimental results and relevant theories and models) with a guide for practical use of different theoretical concepts. For this purpose a companion web site contains a selection of model based equations in excel worksheets for practical application and training by the user to work with his own data or to "play" in order to demonstrate the effects of various input information and to demonstrate the effects of various input information in petrophysical work. In two special chapters the problem of relationships between petrophysical parameters based on various model concepts is presented as a foundation for combined interpretation. This part also contains the author's 'structured model'. The workbook is a result of the more than 40 years experience of the author in teaching at universities and industrial courses. It presents all practical relevant properties of rock in one volume. It offers experimental and theoretical fundamentals in a systematic framework. It gives special focus on relationships between properties. - Contents: 1. Rocks - their classification and composition Overview, Introduction Igneous (magmatic) rocks Metamorphic rocks Sedimentary rocks 2. Pore space properties Overview, Introduction Porosity Specific internal surface Fluids in the pore space - the term "saturation" Permeability Wettability Fluid distribution - capillary pressure in a reservoir 3. Nuclear Magnetic Resonance (NMR) petrophysical properties Physical origin, the principle of a NMR-measurement Description of the relaxation process (longitudinal and transverse relaxation) NMR Relaxation mechanisms of fluids in pores and fluid-surface effects Bulk relaxation and surface relaxation Diffusion-induced relaxation Description of relaxation as a multi-exponential decay - data inversion Applications Porosity and pore volume partitioning Pore size, capillary pressure and permeability estimate Fluid (hydrocarbon) typing 4 Density Definition and units Density of rock constituents Density of rocks 5 .Nuclear/Radioactive Properties Fundamentals Natural radioactivity Origin of natural gamma radiation Potassium, Uranium, and Thorium in minerals Potassium, uranium, and thorium content of rocks Spectral and integral measurements - the API unit Applications Radioactive heat generation Gamma Interactions Fundamentals Gamma-Gamma-PE measurement for mineral identification Gamma-Gamma-Density measurement and porosity estimate Neutron interactions Fundamentals Porosity from neutron measurements 6. Elastic Properties Fundamentals Results of experimental investigations, empirical equations Rock constituents Velocity of igneous and metamorphic rocks Velocity of sedimentary rocks Relationships between Vp and Vs - the Castagna equation AVO (Amplitude Versus Offset) - basic principles and link to physical properties Anisotropy Theories Overview Bounds for elastic moduli: Voigt, Reuss and Hashin-Shtrikman bounds Sphere pack models nclusion models A simpified model for fractured rocks Gassman and Biot model - modelling of fluid effects The problem of multiphase pore fluids Inelastic properties - attenuation of elastic waves Overview, definition and units Absorption of elastic waves in rocks - overview Absorption of seismic waves in igneous rocks Absorption of seismic waves in sedimentary rocks Absorption mechanisms . 7 . Electrical properties Fundamentals Electrical properties of rock components Minerals - solid components Pore fluids Specific electrical resistivity of Rocks Overview The specific electrical resistivity of porous clean rocks - Archies equations Partial water saturation Archie - rocks: Theories and models Sheet models Inclusion models Capillary models Shaly sands Introduction - The Shaly Sand Problem Laminated Shaly Sands - the Poupon Equation Dispersed Shaly Sand - the Waxman-Smits Equation Dual Water Model Simandoux Equation (1963) Indonesia Equation Comparison of some shaly sand equations Dielectric properties of rocks Conduction and Polarization - the complex nature of the two processes Experimental results - the real component of permittivity Theories and models Spectral Induced Polarization Basic mechanisms Traditional parameters of IP measurements IP in ore containing rocks IP in porous rocks 8. Thermal Properties Thermal properties of minerals and pore contents Thermal properties of rocks - experimental data Overview Thermal properties of magmatic and metamorphic rocks Sedimentary rocks Some notes about thermal expansion Theories and models Sheet models - series and parallel model Sheet models - modifications and comparable mixing rules Inclusion models 9. Magnetic properties Basics and units Magnetic properties of rock constituents Magnetic properties of rocks Overview - Rock Magnetization Susceptibility range for rock types - induced magnetization Correlations between susceptibility and content of magnetic substances Natural remanent magnetization (NRM) 10. Geomechanical properties Overview, Introduction Classification parameters Fundamental geomechanical properties and processes Correlation between static and dynamic moduli Correlation between geophysical properties and strength properties 11. Relationships between petrophysical properties - fundamentals of combined interpretation Introduction and motivation Empirical equations Relationships based on sheet models Fundamentals of combined interpretation volume based models Determination of volumetric rock composition (mineral fractions, porosity) of porous rocks - 12. Model with internal structure and bonding properties The concept of a "structured model" Porosity Electrical properties - resistivity Elastic wave velocities General equation Discussion of the "porosity-factor" Discussion of the "contact elasticity-factor" Change of structure and bonding Strength properties - a relationship between velocity and strength

Description / Table of Contents: At the INQUA Congress in Berlin 1995 it was decided to compile the recent knowledge of the extent and chronology of Quaternary glaciations on a global scale. Information on maps: Glacial limits. - Morphologically expressed end moraines. - Ice-dammed lakes.Glacier-induced drainage diversions. - Location of key sections through which the glacial limits are defined and dated. The evidence from each region is discussed in three volumes 'Europe', 'North America' and 'South America, Asia, Africa, Australia, Antarctica', each of which contain a series of maps in digital format accompanied by an explanatory text which includes discussion of the type and quality of data used.

Description / Table of Contents: Contents: Introduction. - Evolution of the freshwater ecosystem: the fossil record. - Lacustrine varve formation through time. - Biological and sedimentary facies of Australian salt lakes. - Freshwater fungi: fossil record and paleoecological potential. - Chrysophycean microfossils in paleolimnological studies. - Fossil diatoms and neogene paleolimnology. - Freshwater macrophytes in palaeolimnology. - Fossil pigments in paleoecology and paleolimnology. - Lacustrine thecamoebians (mainly arcellaceans) as potential tools for palaeolimnological interpretations. - Utilization of freshwater sponges in paleolimnological studies. - Conchostraca. - Guidelines and limitations to cladoceran paleoecological interpretations. - Paleoecology of limnic ostracodes: a review of some major topics. - An account of the techniques using ostracodes in palaeolimnology in Australia. - The historical ecology of aquatic insects: an overview. - The use of caddisflies (Trichoptera) in palaecology. - The significance of chironomid analysis (Insecta: Diptera) for paleolimnological research. - Aspects of freshwater mollusc ecological biogeography. - Fish taphonomy and environmental inference in paleolimnology. - Paleoecology and sedimentology of a Late Triassic lake, Culpeper Basin, Virginia, U. S. A. - Reconstruction of ancient lake environments using both autochthonous and allochthonous fossils.