In many fields, the journal (or sketchbook, field notebook, or lab book) is an important aid both to the process of research and discovery, and to the documentation of that process and its product, the findings, in more formal papers or books.

Your journal is a place to begin puzzling out some of the ideas that you will explore further in each of four assignments: Select A Site; Natural Processes; Change Over Time; and Traces and Trends. The first step in preparing to write the journal is to read the guide for that assignment: to familiarize yourself with what the assignment is asking you to do; to figure out what kind of background information and evidence you will need to accomplish that task. You will gather that information and evidence in class discussion, in the required readings, and on field trips.

Although more than 2,000 different mineral species have been identified, only 25 or 30 are abundant constituents of rocks. The purpose of this exercise is to acquaint you with these common rock-forming minerals. The most diagnostic physical properties of these minerals are listed in the Mineral Identification Index.

This lab constitutes four parts. In the first three sessions, you will familiarize yourselves with the characteristics of – and learn to describe, identify and interpret – the three main types of rock: igneous, sedimentary and metamorphic.

Objectives: Estimate detention time and nominal residence time in a model basin