alkaline-carbonatitic rocks of Brazilian, Paraguayan and Bolivian terrains. Although 30 such occurrences are...Cretaceous age, with two well-defined Lower Cretaceous and Upper Cretaceous generation episodes. A clear tectonic...ancient structural features such as archs, lineaments and faults characterizes most cases. The rocks exhibit...associated with the topographic level of emplacement and low-temperature H2O-CO2 rich fluids responsible for...for the increased amount of heavy carbon and oxygen. Sr-Nd isotopic compositions similar to those of
A CLASSIFICATION AND GLOSSARY OF TERMS Decades of field and microscope studies and more recent quantitative...have resulted in a vast, and sometimes overwhelming, array of nomenclature and terminology associated with...agreement on their usage, and reassess the methods by which we categorize and name igneous rocks. This...This book presents the results of their work and gives a complete classification of igneous rocks based on... lamprophyres and charnockites. It also demonstrates how the more common plutonic and volcanic rocks
