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 [Illustration: View southwest from Lake Solitude toward the Grand Teton (right), Mt. Owen, and Mt. Teewinot. _Wyoming Travel Commission photo by J. R. Simon._] [Illustration: Grand Teton, Mt. Owen, and Mt. Teewinot from Jenny Lake Flat. _National Park Service photo by W. E. Dilley._] 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_.