Working With Jones Physical Geology Lab Manual
The Laboratory Manual In Physical Geology Jones is one of the standard lab texts used in intro physical geology courses across the US and several other countries. It is designed around hands-on exercises where students identify rocks, minerals, and structures using real samples or high-quality images. If you are a student currently taking the course, the manual is your primary tool. If you are teaching a section, it tells you what to assign and how long each exercise typically takes. There is not much mystery to how it works. Each chapter pairs a brief theoretical overview with step-by-step procedures, data tables, and questions that lead you from observation to interpretation. The exercises are written so that a student can work through them independently in a 2- to 3-hour lab period without constant instructor intervention. That structure is deliberate and it matters because most physical geology lab sections run on tight schedules.
Laboratory Manual In Physical Geology Jones Overview
The full title usually appears as Laboratory Manual in Physical Geology and it has gone through multiple editions. The author list has expanded over time with contributors like Robert Lowe and Richard G. Reiter joining Robert W. Jones. Each edition introduces updated images, revised mineral and rock identification schemes, and new exercises on geologic hazards and map reading. The core sequence stays consistent: minerals first, then igneous, sedimentary, and metamorphic rocks, followed by tectonics, geomorphology, and structural geology. What people often miss is that the manual is not just a collection of worksheets. The real value is in the systematic decision trees embedded in the identification exercises. The mineral and rock labs force you through a flow of properties in a specific order rather than letting you guess at an answer. That sequencing reduces the number of wrong conclusions a student reaches before the end of the period. The book is published by Pearson and it is widely available as a physical copy, an enhanced eBook, and through various academic platforms. Some instructors also use the companion online system, which provides auto-graded quizzes tied directly to each lab exercise. The digital versions include embedded videos and interactive 3D models that help with crystal system visualization and cross-section interpretation.
How to Use the Manual Effectively
Start by reading the introduction and the property tables before you touch any hand sample. Students who skip that step waste time flipping between pages and often misidentify cleavage directions or hardness ranges. The tables in Jones are printed with enough detail to be useful without overwhelming the page, but only if you look at them before the exercise begins. Use the actual hand samples if your lab provides them. The images in the manual are accurate, but they cannot replace the weight, texture, and fracture behavior you get from holding a specimen. A piece of quartz that looks like smoky quartz in a photo may be something else entirely when you test its streak and cleavage on a real sample. Complete the data tables in order. The later questions depend on the earlier answers. I once had a student try to skip straight to the interpreted results in the sedimentary rock lab because the preliminary tables looked tedious. The final classification ended up wrong because the grain-size data she skipped was the exact difference between sandstone and conglomerate. She had to redo the whole exercise.
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Common Problems and Workarounds
The most frequent issue I see is students treating the mineral identification portion as a matching game instead of a process. They pick a property like color and lock onto a guess. Color is the least reliable diagnostic property in mineralogy and the manual explicitly warns about it, but people still ignore that warning under time pressure. Another recurring problem involves the topographic map exercises in the structural geology section. Students often misread contour intervals when the index lines are spaced far apart. This leads to incorrect slope calculations and flawed cross-section drawings. The workaround is to count the total number of intervals between labeled elevations first and verify the spacing before you start drawing anything. I have also noticed that some editions use slightly different nomenclature for certain rock textures, particularly in the igneous section. If you are working from an older edition and comparing notes with someone using a newer one, you may see terms like porphyritic basalt versus vesicular basalt used differently. The concept is the same, but the label changes. This is not a flaw in the manual, it is just how geological terminology evolves across editions.
What the Manual Does Not Cover Well
The lab manual is designed for undergraduate introductory courses and it reflects that scope. It does not go deep into quantitative petrology, geochemical analysis, or advanced structural measurement techniques like rose diagram construction with stereo nets. If you need that level of detail, you will need supplementary materials or an upper-division course text. The digital image-only versions of the manual also have limitations. Some schools provide the textbook without access to the full set of physical specimens due to budget constraints. When that happens, certain identification questions become harder to answer confidently. The manual acknowledges this in its prefacing notes but cannot fully compensate for missing tactile data. Another gap is the relatively brief treatment of geochronology. Radiometric dating exercises appear in later chapters but they are summarized rather than worked through with full calculation practice. Students who plan to take a stratigraphy or geophysics course should supplement this with additional problem sets elsewhere.
Where to Find It
The current edition is available through Pearson's website, major university bookstores, and third-party resellers. The ISBN changes with each edition, so make sure you confirm the exact number with your instructor before purchasing. Using an older edition is usually fine for the core identification exercises, but the online homework compatibility depends on matching the edition your course uses. If you are looking for the PDF or digital version, the official route is through the publisher or your institution's library. There are many unofficial scans online, but those files are frequently outdated, contain corrupted pages, and violate copyright. The cost of replacing a missing or unclear page during an exam period is worse than paying for the legitimate copy.
Which Edition to Choose
The twelfth and thirteenth editions are the most commonly used right now. The differences between them are moderate: new images in the tectonic and hazard sections, revised questions in the sedimentary cycles chapter, and minor updates to the mineral properties tables. If you are buying used, either edition will serve the course adequately. The core identification workflows have not changed significantly enough to justify paying full price for the newest edition unless your instructor specifically requires it. When the manual arrived in my office years ago during a course redesign, the first thing I checked was whether the hardness scale exercises aligned with the standard Mohs set we kept in the specimen cabinet. They did, but a couple of the older editions had swapped the order of the apatite and orthoclase tests, which confused students who were memorizing by position rather than by procedure. Always compare the table of contents and the first few exercise pages before committing to a specific print run.
