Grading Policy

The following points will be evaluated during the map 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:

• Clarity

• Appearance, etc.

2. Title, Key, Legend

• 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

• 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

• 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

• 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.