SURFACE GEHOLOGY. 
exposed to the full force of its great waves, and, as a consequence, the 
denudation has been greater there. In the Maumee valley, however, 
the yellow laminated clays which form the summit of the Drift series 
are regarded by Mr. Gilbert, who has carefully examined them, as of 
lacustrine origin, and of comparatively modern date. 
In the valley of the Cuyahoga—which was a deep gorge previous to 
the epoch under consideration—we find a series of finely stratified yel- 
low, blue, and red sandy clays, that overlie all the other Drift deposits. 
These are very peculiar in character, and seem to represent a portion of 
the Drift series, which, if once generally deposited in the lake basin, has 
been for the most part since removed. The nature of these strata may be 
gathered from the following sections : 
LACUSTRINE CLAYS, AKRON, OHIO. 
PPO UEALUME CSAC che tet sesscaean seco eetarae tatotnos unde scsets coeaneucayeabes 10 A 
Mame liter lamar serunastec seen vk cuamesastanacucressaloucaea tes st vee ntesdse: Me -f 
3. Mixed yellow sand and blue elay, stratified .............. sssesses 1 il 
Avene LDU CLC] Bygmar ones ccn ete wie ss Speosbicesesinececc tees esserascolseessseagene ences AS 10 
memnrce lLowasamcyela yarns ce tevccsuecGsesceuclncsccusettsea seo unet core wes 10 
OoMM SITET CA Vpn cr caltan senses aces siaveds states eka ancu vescocen seueioee aautay: 1 oe 
UH AIN CCUG Lavan tite aan ne Erni os OMS SI NORLLL UL AS AUR WIR enSe Mp Oh ans 1 
Same lloweslOamiys Clave teeke ices dent ose ccsenlersnees ton tocmdeccnreae oath 1 
OTE MIDILCUC VMene aan torelauemNac es wenceeduc esters crite nan hiee stun ech cudienltattd 506 8 
NCEE CNC lente Mtererec sae ec esse saa twee steko bameier Pegalcule deetedeeeceds ae 2 
MIS ten Clavuwumasns slssnae sca nuale Ccac weve din cue stlesesedhoelauassicseateate 2 6 
MRRP TCO Clagrstarlncsmstcc nes ekestacctthe cust teuelesrenove coat seibnecosnioleeetestns BY 10 
Some WT OUC Ayjreceleaapeas ae ciacts Westen a at alectiaio ute tem uaa us Mae MS CUA) Tih IL 6 
MPIC ONC Aan esminnnsonctrs casecheacmon cess tee ccccat eucuse ceusctiene ves cts oseiuie cs 2 
eMC LO Wl OATINVRC]AVaion sounsdaecintsscelsessoheneoes seaman oeomeee neg uae 1 6 
TG} sD BTNINS) GE eh aac os CAR RASA cya ACLS A Ae ULI «AGN EAA Boa 2 
IAs) WV RWSOUGL EN BAMOAT CACHES asa He Soe) SAECO CLA 3 Mate UA OE 1 
SMe py ell OweSAT Citcwscsaseinaesfeeerc es tld ccecuinenlcc hte) Saanh week ante lus es 1 
OMMUNGC Hlowal OAIMNVACIANEseleccstsacsca tec snes srecmecinsceeneuse se ossece coceesoneaus 2 ose 
ZO NM UCICl Ayman nasene eco ees auc level te lcs uaunean sie lea tase cdlous mM ec uate Wy 4. 
MONGe LO Wi LORMOWA CLAVE cr catsleccussoseeccinenctecentuacsataecuensucesouceunece ace 3 
en WICK IAN Mtn aaeetasaoccccloncerslretnasesssnc as tos sciseccecescsles acter ante ees 4. ce 
LACUSTRINE CLAYS, THREE MILES NORTH OF AKRON. 
Feet. Inches. 
ij Eardiconcretionary clay, with’ much: iron.ss.cscseueres ses osc 25 
Megs | NBIITIS) CER ocr OdbaG BONER OEE CE SECO AEE EE PEE Ane MRE LPS li ie pina am 8 sc 
Sree NCO LO Wee leiyeeerens, So wceneh ann as L's ce Uke BN SERN UN esl ae 3 
AMID ILERC Agrees tccesece er siee eect ecins vous aesceslsCsbectec SG Cd aonwasoeceusene a 3 
De EVOGRG LAV geeencnssneenietasenne ees ce scot ube tececsgeue unubecs bet bendomeaneee bee phaes 1 
Goa xccllowsploammycelayann Meer edness vate sh seco Cauanrtwa saunulMNanee wu Lhd ea 
