300 
PROBABLE EOCENE GLACIAL DEPOSITS IN THE FORT APACHE 
REGION, ARIZONA.* 
BY 
ALBERT B. REAGAN. 
When the writer wrote his article on the Fort Apache Region, Arizona, 
much uncemented gravel and boulders was found capping the mesas and 
underlying the lava flows. These deposits he placed in the Tertiary and 
Quaternary. In his section on Canyon creek, Arizona, from the source of 
that stream to its confluence with Salt river, he gives 125 feet of coarse, 
uncemented gravel, of gneiss and quartzite boulders, capping the clastic 
rocks. Gilbert’s section at the crossing of Canyon creek also gives 20 feet, 
coarse uncemented gravel of quartzite and gneiss boulders.** Some of the 
writer’s other sections in that region are here copied in whole or in part 
to show the existence of this material in various parts of the reservations, 
as follows*** : 
Section in Seven Mile Hill canyon, five miles southeast of Fort Apache, 
Arizona, Feet 
APES USS EU bigest aires oneteu sr chico ever olf scey-a eric setereRe: opetensteher el cuictopsiela le ovisieeuavece susjeieserace.g 200 
2) . VOMERTIMWOSISINGES (sia bose oars Sconce clo otra coer nee nee era 10 
SS tlata ot mostly unlithified sand and! clays. .....-.-s2++eece ss 40 
Me Sey rm Mit, COLON COR ISAMG Ys ccrepepeveneysvousyet coer a cleyeete are 1s ese ayete ie, exe eres 4 
5. Conglomerate rock, the cement being volcanic ash. The pebbles 
and cobble stones of this series being quartzite, granite, an- 
desyte, rhyplyte, limestone of the Palaeozoic era, ete., (no 
cobblestones or pebbles of the basaltic type were found in this 
COM] OMETALE) noatererneriar stain otenele eteze cdetavens 6 vraciete rae vole yere/ote isl store. ails © 60 
6. Strata of partly lithified coarse grained, reddish to light brown 
sandstone, composed of angular and rounded grains of granite, 
rhyolyte, etc. In this series the rhyolyte-trachyte particles 
[OSC KTOMUOIKE* sc-d.u.8'o-bid doe coi Ob 6 0.010.0 6 cid Dini is OIRO OUI ROO Oe 200 
7. Red gypsiferous shales with sandstone and limestone of the 
WALDONUFET OUST AZ Craver vey a evetete enone sicioheroheleveuci=| aus) elsisisusies 600 to 1100 
1614 
Section along East wall of Cherry Creek Canyon, Arizona, seven miles north 
of Salt River, near Mr. James Hinton’s house. Feet 
il, JLikedane qoy Chai joiwonyan sdonolane’ Aa nboeoocuuedoococodUT eaters bari 30 
POON OME ATE LOCK ore «csi siske ie ele, oho ss) elcirele! eo) chee) 6 sire Piereeiecsvssietel ss Se 80 
3. Tufa conglomerate and agglomerate .............. AOS Acre ROS 20 
*For references on this region the reader is referred to the following: Gilbert, 
G. K.. and Marvin, A. R., U. S. Geogr. Sur. west of the 100th Meredian, Vol. iii, 
and special references as follows: Gilbert, pp. 1638, 164, 165, 526-528 ; Marvine, pp. 
221-223. 
Loew, Oscar, ibid., pp. 587, 642. ; ‘ 
Reagan, Albert B., Geology of the Fort Apache Region in Arizona, Am. Geologist, 
Noy., 1903, pp. 265-308, 2 maps, 1 plate. 
**Gilbert, ibid. p. 164; Reagan, loc. cit., p. 270. 
***Reagan, ibid. pp. 270-275. 
