Show J 1 P j v t io M v I r Jj dI f. f t If I J J j. j t g J i t. t g hI l. l t l t tt 1 t l i 1 t e e es t t logic i Ii t. t tJ J it L. L 6 1 i f r. r t l. l i i j. j 4 I 1 r f j t j I I i 0 1 11 ld E r lr l' l R e.- e. I 4 f 0 o o 0 I s jS ey JQ a e ey I iJ e ron dI 4 4 t a 4 1 j. j t ki L J Ji t i t p C J. J t ft r ie i 4 1 j v- v t lId lj V Vi i i I Ii 1 t I M Museum J T F Field Ie I IIi It R R ies Gives J r It i W 7 j t A Account of P Past st Ages g gr r S. S f u r f 4 7 Y LeR To tl t v 4 II 1 7 rn 5 1 i tinSa Ia 1 bythe foMil 1 1 v. v thes u r th j 4 Indices Indices' of th the rock fock age a letia lAC Lz 4 consider the the- section cross I I d to in the and ott thru i the White Whit River 4 ong this line JID are exposed rocks roca f w ht thickness sev of L era mile represent more than three million years of the earths earth's h U start with the t oldest rocks those J color t eel ed rocks n a f q l and and and re generally re- re i to toss as Pre Ire n age ace They can be observed i 1 the of ih Ridge to s beyond Carter Creek and are on all the Only iJ fossil basil li Is recorded from these theae beds 1 t K part pan of of-a of a. a the ot f Jj an animal to which the name epics r fer hu the t identification Is Sa Correct cornet then the rocks would be JiJi S L f lag age rather Ulan than There n is Ja some doubt as u fossil daSh i belonged to the f t byl wI l some som means where It I tto ln In of the one the moun moun- t tf i tam tato peat r tw j l i I I 11 The Tb f formation quart quart- fates IB Ja the Carboniferous so eo tall call J i ed ed because of coal beds beds' In mint many pert parts of the earth Itis t composed of limestone jj sandstones to toa a. a t large part of marine i. i f marine sediments having been deposited de- de t posited on the tb floor noor of ot the ocean 1 mn are very containing f f the petrified remains remains remains-of ot the animals ins ani mats mals which lived to In the sea ae a at that a aj ii l M vt v j ji 1 v time d lf trilobites etc etc uch S j invertebrate r antt ant ani j t t 1 mali maIa collected have av In great crest greatS great'S S 'S i numbers t tram from these theae e ous oua ous rocks The vertebrate back 1 tt boned animals are by j J J u i We neXt ne com ome om to t the rocks rocks' of y 1 4 r Permian age aIe which fare character J S toed lead b by- by the great pt phosphate beds bo which are exposed oz on ot of 4 t. t the m mountain Marine e J conditions m. m l prevailed during much of f Permian time Ume and marine Invertebrate fos- fos os- os i I ails Ils are re Icebound found In mat great at a abundance 3 t to In the lower part pan of this formation along the Jower Brush Brub Creek 1 marks the dose of f j Paleozoic en f Y 11 The rocks overlying overy the Permian nare 4 are e of age the beginning of the Mesozoic era and ire are often referred to as I th the e Red dt Beds They They can can easily kr be recognised ed ad es red color Brush i f A Creek i and lid Red Mountain This U Ja the th period when the were ii S t fast fut fast becoming becoming- the dominant life lI J 7 of the earth having 8 appeared In rOcks A great things took place in 1 the rocks at this pe pe- pe I nd caused ci by the fol folding of the v earths earth's cn crust t arid he of II J the ae WhIle the t rocks ar art are In to part marine the upper up up- 4 per beds are continental sediments I la tot the tower lower part marine i f baa brates to those to m the Per ia hi i mian rocks are an found and toward I 1 H l' l the upper pert part petrified wood coni con con- 1 i mining t radium bearing a ore occurs s v AbOve Above the t R Red Bed Beds Beds' are ft Vv the rocks of the Jurassic i. i C The lower member the Navajo Navajo- or orf M f White Whit Cliff formation comprising hundred feet Of A- A wind blown blon a can caD be tie S. S readily distinguished In s- s r. r dv light colored sandstones just oath fit at 4 f l 1 r I r I II I t f J i I. I l t- t I St St. 5 Dry T rt bYon J The Tl el JJ rocks rocks' which in the Ule Cliff Dwellers lived and and and remains remains' and on co 4 which they clad the their pictographs i i only in theae fossil Ismall I small i Dr 7 u L toe the the th discovery of these Ul in Ashley j Canyon new near During jl depositIon deposition de de- position ot of rf these sandstones the d desert area ver which if D not as tarp large M U e any desert today of today ASter Alter J the deposition of these toIlers sandstones sand sand- stones the sea again ID entered tb j we have hare a a. a t coo ot and sandstone nef one member known as the Bun aim dance dan formation ils very Jn J such invertebrate fouls fossils f as 1 belem nitea and The Sundance formation r forms the Bridge to the left of the road near the head bead of Draw and the tile divide Or 0 v- v ef et which the t road pause aMM to r to the valley riley of Creek Creet di formation on Ute the right of the road rod are exposed other JUi na raisIn strata known as the Morrison formation It I USa is this formation that contains the bones so 0 well known from the i a ii aJ Monument As Aa we from f the the Draw we en enter tar ter upon a 1 series amee of marine shies shale of perIod It is up on theme disIntegrated and aneS the recent recen out wash J from the t son r. ro x most most- of of- the farms of Aihley- Aihley t Valley f While Wh o o fari as as known by the writer has hu been made inada to fossils from these such fossils as fishes sea sea sea- and have been collected and 4 are quite easy euy to w pro pro- ammonite from these can be aee seen at the Thorns Tom l t r Uni r IA During t the time Ume the tile and aDd Mesozoic rocks so y far fl discussed etc Crt cre- the area of the was was' was ageo 1 gao ceo stoma a of the earths earth's crust cnut and aM n It 11 was into this trough b. b that that the theft marine ft land aid con continental conk f sediments of the Paleo Paleo- Paleozoic rote Eras Bras w were deposited VM J W v The the M era Wa and ana Cretaceous period marts marks the the time of mountain building building- In inthis district when cruet was crust was w. pushed up forming the great cret Oln- Oln tab tah mountains and driving out the Cretaceous sea ats Thus was wu the Cenozoic Cane Ceno- solo era gna the age of erect ered In mammals are known Mesozoic era hei I 1 were forms and de by Tb are four tour major formations recognized in county belonging to the are the Was Was- itch atch Onsets Green River and be- be longing to the Eocene period and the the River belonging to the basal f period period- The Oldest eldest of these Cenozoic Wasatch are not recognized along our our line i of section cross but bu are wen well Other ther places They may be observed aJ slAng along nc the escarpment escarp ment on OD the south side aide of the Ver- Ver Rangely nal-Rangely road In the Snake John area It Ja is' is to this Wasatch formation that the Eohippus dawn dawn- ho horse hOle se the ancestor of OW ocI- ocI era ann I with te oi primitive flesh eaters which are the ancestors of our modem mod mod- em ann carnivores there th too are found thi heavy i limbed slow moving which died Idled OU out d during the penIo l descendants i I or QI River formation forma farina I Rico tion locally C J known a the the oll Is Sa of bed lake bed origin Pew Hew vertebrate other ot than Ulan fish have hate been found In III these ue rocks rocta Th jt haa Jf to J n rbi S S' S S i Rein few fragmentary bird f mammal remains remains' to the of S Powder Springs to tn rocks that wen nt termed along the shore anon of this ah- ah f ari-f dent clint Green Oreen River lake There bare haret bani been thousands of insect and plant plan f fossils collected from these abates abates' in parts of r the the county these fossil r Include files hIes ants hc u Such Sueh plants planta tens ferns conifers cool coni fe fers wae lilacs vines and an many others the seeds and In In a. a af few th the t I fruit tru i ha haft vs been Jound These nIeM plant t fossils indicate a 1 warm warm- climate during jd the deposition of 5 these Green Green- River r exists XII In Ula that area ae aeI I W to the tOe for om which t of the of the district are derived These Theae beds are an well el eU expos expos- throughout M central part pa Of the Basin and can be lie studied along the of ot our cross the south rim rim-of Deadman Bench to i Rin 1 ferous to v such forms forms' as I theres Giant Clint beasts rhinoceroses carnivores rodent h horses horses- tapirs 1 etc 1 of these fossils to U Ut known are t only and f or the first time from this formation which tore together with the overlying lUver r lower 4 forms a awry v ry S Interesting and Important connect connect- tag ine link Unk between t n the Eocene and aDd faunas The beane 7 t It I J II ji I r 11 L I. I t i l r rt it t Ir 4 l 4 t f sj 4 ii t Ii H r f f. f 1 ff fd t tf f 1 n i S. S The b beautifully 7 bUan I b D. D v Iii 1 U the j 4 i t 1 j k i. i f jn x inage can best be o from th the At- At s PiaU west west along U U. S. S a highway to Dry Gulch These Thee bedI bed are axe not noC so 10 as as' t tan tall beds beds below I but a a few J Very In In- In ri i have been been- found 1 FroIa be quarry north norm Of f road ev n ron west Welt of V tM procured pc many a car car- oain 4 tr cnn rby I tbs e nut e 1 w- w f peo mr ocene o- o cene c. and pu Pliocene are not repress ested eal J by kythe the rocks nek coun ty w. but the next ext abort borit the P cane cene K Is r the e Pleistocene aften atten th the Glacial Period there was much glacial action in the district Many Many- of Ot the UM canyons 4 t out ou by by ilia- ilia cites and gravel and boulders ca many of Cf the lb benches benches ben bell ches along r the south flank o the mountains derived J f ro t gla glacial cial moraines and a ts large number of the in the Matah moun mountains laths a sar v lakes leW ie ills IIla Of of the Pleistocene PJ Period cI have haft been found in the district The tooth of Jan JInt tas eI ete- ete like bant-like nIma was found near Dear Lay Colo In sediments sediments- of e. e j. j 5 r The llie time from Pleistocene tor to the thi present is t. referred toe as- as Recent this period his has on an ord a fleW but bu the process ro gone ages the we down of i the earth and I titling In of low low- ones ls going ue 1 sediments are burying the remain of the living Hying r species of c animals many of which will become fos fOl sill j A 4 |