But the main work in hand was the unravelling of the intricate history of the Highlands and the palæontology and petrology of the older rocks of Scotland.
The more technical portions of the subject, such aspetrology and palæontology, he considers in much less detail.
No better introduction to the study of petrology could be desired than is afforded by Mr Harker's volume.
This being the case, the study of the petrology of the igneous rocks is necessary, in order to arrive at a true understanding of the composition of the sedimentary ones.
The petrology of the sedimentary rocks is still in its infancy, though much has already been done, but it offers a wide field of inquiry to the field-geologist and worker with the microscope[8].
Other phases of economic geology have been developed in studies of subterranean waters, microscopicalpetrology and mineralogy, the chemical analyses of rocks, etc.
The "Geological Classification of Rocks," of MacCulloch, marked the separation of petrology as a science from descriptive geology.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "petrology" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: crystallography; geology; mineralogy
