Grading policy and geological maps layout
The following points will be evaluated during the maps grading:
Students are encouraged to look at published Geologic Maps to get an idea of the kind of information and elements that are to be included
1. Neatness: (5 to 15 points)
2. Title, Key, Legend (10 to 25 points)
3. Structure (10 to 25 points)
4. Geology (25 to 50 points)
5. Cross Section (0 to 20 points)
Students are encouraged to look at published Geologic Maps to get an idea of the kind of information and elements that are to be included
1. Neatness: (5 to 15 points)
- Layout
- Clarity
- Appearance, etc.
2. Title, Key, Legend (10 to 25 points)
- Usually at top of map: Title, Name, Partner, Date, etc - North Arrow w/ Mag. N (labeled and w/ exact angle of declination)
- Usually at bottom of map: Scale (Bar type w/ units (km, m, mi or ft- not'], ratio can also be stated, (e.g., 1:24,000), contour interval
- Key/Legend/Explanation
- Contacts (dotted where concealed, dashed where inferred), Fault(s) (if present, U/D or stick & ball, arrows), S & D (if needed), fold(s) (if needed), roads, trails, streams (intermittent, etc.), contours, contour interval, any other standard natural or cultural features; Units w/ symbol , box (w/ color), description of major map units: in proper order (oldest on bottom, etc.), Age/time units (Eon, Era, Period, Epoch, Age) or time rocks units (Erathem, System, Series, Stage, etc.), and/or Rock Units (Supergroup, Group, Formation, Member, etc.), to the left of boxes & symbols
3. Structure (10 to 25 points)
- Fault(s) (type, extent, accuracy, etc.)
- Fold(s) (type, plunge, extent, accuracy, etc.)
- S & D/Horizontal; correct type, placement/location/distribution, extent, etc.
4. Geology (25 to 50 points)
- Units Contacts: completeness, accuracy
- Units Description correctness: rock name(s), color, composition, texture, structures, feature(s)-bedding, layering, fractures, crossbeds, ripples, mudcracks, graded bedding, sorting, etc.; phenocrysts, groundmass, pumice (squashed= fiamme, eutaxitic), ash, pumice, fragments/glass/crystals/lithics, vesicles, amygdules, flow banding, etc.; foliation, porphyroblasts, relict features…
5. Cross Section (0 to 20 points)
- Topographic Profile accuracy, corr. w/ map; struct./faults/folds/w/dip
- Geologic Units (w/ correct symbol, e.g. Qal); title, name, scale, V.E., etc.
