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The rubric you used and the more-or-less likely one for my grading. _____/5 “logistics” Title, scale (bar and ratio), author, date, N arrow, explanation (rock units (oldest at the bottom) with symbols and ages, strike and dip, contacts, structures (faults/folds))

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slide1

The rubric you used and the more-or-less likely one

for my grading

  • _____/5 “logistics”

Title, scale (bar and ratio), author, date, N arrow, explanation (rock units (oldest at the bottom) with symbols and ages, strike and dip, contacts, structures (faults/folds))

  • _____/3 strikes and dips on bedded rocks
  • _____/10 appearance (neatness, spelling, correct line weights, color LIGHTLY, symbols in all the rock units, no eraser marks everywhere)
  • N is to the top of the page AND all writing on the map is up to the north

______/18 TOTAL POSSIBLE

slide2

Nancy who?

date

Which way is N?

Way too heavy

lineweight

Only one???

Whats on

The other side?

EXPLANATION

TOO

Dark and

unlabelled

(Symbols)

ORDER!!

And ages

?

____

?

Need the WHOLE

contact

N ratio scale

Some title!

And move to top of page

Topo base from

SP Crater 7.5’ quadrangle

slide3

ABSTRACT

_____/2 title

_____/3 location

_____/5 rock types

_____/10 volcanic/structural evolution

slide4

The abstract summarizes the entire paper. It may

be called an “executive summary” in some cases.

It should not be a detailed, blow-by-blow description

of every single aspect of the paper, but it should

contain enough information that the reader will gain

an appreciation for what the paper is about.

It should tell what the study is about, why it was

done, and what the main conclusions are.

slide5

An abstract does NOT need to include details of location,

but it should include concise descriptions of the RESULTS

of your work. Thus “The rocks at SP Crater were studied”

is NOT acceptable, but “Rock types at SP Crater include

Triassic alluvium, Precambrian basalt, and Ordovician

mudstone” is great (the difference? the first tell me what

you did, which is obvious anyway, and the second tells me

what you found, which is what I’m after). So, you will want

to include a few words about where SP Crater is (three to

five words, after “is located”), the rock types (in stratigraphic

order please), and the distinguishing features of the

volcano and the area. AVOID THE PASSIVE VOICE as

much as possible (what are better ways to say “the

basalt was seen” or “phenocrysts of olivine were found”?).

slide6

Structure and stratigraphy of the Lake Mary area

by GLG 240

Lake Mary is located ~ 16 km southeast of Flagstaff, AZ,

along Lake Mary Road. The rock layers are flat lying and include

Permian Coconino Sandstone, Permian Kaibab Limestone,

Triassic Moenkopi Formation, and Tertiary basalt.

The Coconino Sandstone is cross bedded and friable. Grains

are medium to coarse, well sorted, and rounded. Cross bedding

varies from high to low angle and is in several directions. The

Kaibab Limestone is well cemented and massive. Weathered

surfaces are strongly pitted and the rock effervesces in HCl. The

Moenkopi Formation consists of layers of differing resistance to

weathering and thickness. Thicker, more-resistant layers are

coarser than thinner, less-resistant layers. Lenses of platey

siltstone are rarely cross bedded. Basalt disconformably

overlies the Moenkopi Formation with an intervening baked

soil horizon.

slide7

The valley in which Lake Mary lies is an example of a graben

structure. A drill core taken from Lake Mary shows that the

stratigraphy below Lake Mary matches that of outcrops on the

mesas on either side of the lake. Joints in the Kaibab Limestone

parallel the fault on the northeastern side of the graben.

Paleozoic and Mesozoic rocks were deposited in environments

that varied from eolian (Coconino Sandstone) to marine (Kaibab

Limestone. Tertiary basalt was derived from an unknown vent

in the San Francisco Volcanic Field. Faulting occurred after

emplacement of the basalt, although precise timing is unknown.

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