Chapter M

magma 60
magnetite 52
marine sedimentary rocks 21
metamorphic rocks 53
muscovite 55

N
normal fault 39
nunatak 111

O
obsidian 101
oreodonts 97
outwash 31
outwash plain 31
outwash terraces 34

P
pegmatite 56
period 46
Pinedale Glaciation 109

Q
quartzite 63

R
reverse fault 39
rhyolite 100
rock glaciers 26

S
schist 51
sedimentary rocks 45
series 47
serpentine 55
“soapstone” 55
Sundance Sea 79
systems 46

T
talus 24
Targhee uplift 83
Teewinot Lake 92
terminal moraine 30
Tetons 8
Teton fault 37
thrust fault 39
timberline 15
titanothere 97
treeline 15
Triceratops 85
trilobites 70
tuff 92

W
welded tuff 101

The GRAND TETON NATURAL HISTORY ASSOCIATION

The Grand Teton Natural History Association assists the National Park Service in the development of a broad public understanding of the geology, plant and animal life, history, and related subjects pertaining to Grand Teton National Park. It aids in the development of museums and wayside exhibits, offers for sale publications on natural and human history, and cooperates with the Government in the interest of Grand Teton National Park.

_Mail orders_: For a publication list, write the Grand Teton Natural History Association, Moose, Wyoming 83012.

_Creative Director_: Century III Advertising. Inc.
_Designer_: Les Hays Studios, Inc.
_Color Separations_—_Assembly_—_Plates_: Orent Graphic Arts, Inc.
_Type_: Bodoni and Gothic
_Printer_: Omaha Printing Co.
_Printing_: Offset Lithography.
Six Colors on Covers
Two Colors on Body

CENOZOIC
QUATERNARY
Sand, gravel, and talus
_Includes glacial outwash and materials deposited by present
streams_
Landslide deposits
Moraine deposits of Pinedale glaciers
Moraine deposits of Bull Lake and older glaciers
TERTIARY
Volcanic rocks
_Lava flows and volcanic ash_
Conglomerate, sandstone, shale, claystone, marl, and pumice
_Deposited on land or in shallow lakes_
MESOZOIC
Conglomerate, sandstone, shale, and coal
_Deposited on land_
Shale, sandstone, and limestone
_Mostly deposited in shallow seas_
PALEOZOIC
Limestone, shale, and sandstone
_Deposited in shallow seas_
PRECAMBRIAN
Diabase dikes
Granite, gneiss, and schist
Fault
_Dashed where approximately located; dotted where concealed beneath
unfaulted younger deposits. U is on the side that moved up; D,
on the side that moved down_
Geologic contact

Transcriber’s Notes

—Retained publication information from the printed edition: this eBook
is public-domain in the country of publication.

—Corrected a few palpable typos.

—Re-arranged text in captions closer to the corresponding image.

—Expanded ambiguous references to illustrations, _e.g._ “Figure D” to
“Figure 16D”

—Added one section heading, “The First Big Lake” to match the table of
contents.

—Included a transcription of the text within some images, with estimated
scale readings from charts.

—In the text versions only, text in italics is delimited by
_underscores_.