STATE GEOLOGIST. 83 
The succession of strata underground at Lima is shown by the follow- 
ing record; | | 
Feet 
ID TPE Meas woos to ae acsthacs RSTO OURO CHER PORE ORR OA CER Ra oar 7 
Lower Helderberg, Niagara and Clinton limestones.. 333 
@ limbo shiall Gry cis so accacus cewtel oiekcroue haere oie aisha seven stare eieweetaces 40 
Mie ciinvas alte wen. ses Svocteunts ere Ne cnis sho lous iacwigere fetsiots Ssenalsiel ences 50 
@incinnati= GELudsony River)» Shalev... csees scece ss 470 
Witt Cale Shia Cas erase ce tte case reorem oracle eRece lows witelo latesigholiat so aie 350 
AVIRA WON TL AE Ube > Blond pkeac ado ioacicacoe ROR aOR RON b Oa pe ae oar Rr er ete aie 1,250 
CRS iat aera eueh oie conen eco oie ce pony sila senate! bast bai eteseunlevenske scolevere 8 Ds 1,256 
Ua Crepe sae seca oa ores eect ear sede sale ecuensgevere eae iekecohn ore os one rdus! sete 1,260 
Sal ea Wie tC Tamed cent eis cis coatevsdece sie sosansioverene an sreire ue ti clare ai ences 1,272 
Next is given a record of the Shull well, the pioneer at Beaver Dam, 
in the northeastern corner of the county. The well head was 860 feet 
above tide: 
/ ; Feet 
IDNGIRE Bs ah idl ao BO ao AON OC OBIT OORT DIO Ca ICICI IE OID ROO 33 
Lower Helderberg and Niagara limestones........... 247 
CLINCOMAPTIIMECSEON Cees srersyerateee toccacere tel ewolohe re loseiee ererers areies 40 
Clintonyshalestes ee erere fs Slee aie Sores ohh lee enalalevste bis 105 
MIC CIMARSIVATES Rete cise cieyeveceue eteeoccvee re are voret eee oie oie sees. faoere 50 
(475 feet of casing.) 
Cincinnati (Hudson River) shales...............2e- 580 
Witicamshalesan 8 Sole ee ce Sis oe ernment 273 
MrentOnual wes ccicecote steve exe Ae et Sauce Maye: ek tea ralae eee thea 1,303 
I OLLOMPO Le wiellemesarcunes, cece ie any ceeTe sl eice eerie ee cele 1,345 
Finally there is given a generalized section in the Spencerville pool, 
lying along the west line of the county: 
Feet. 
DG Ete recess es SF FeSO OIG DiS OOO BE A Ee ees 5- 50 
BUTIVES TOMS eevee rchevavecs ie oterc Teheteh oadae one cle anoloe ineber si era tece 300- 325 
CCaSiN ee KSA n Se eee eae 360-380 feet) 
Shalesweacsepractaehs cet e eee ee nti cere oe aioe skates 800- 850 
Trenton at from...... i ee 8 DAE SERENE ee 1,170-1,227 
These and other records of a like nature show that the Trenton rock 
in Allen county lies highest in the southwestern corner. At Spencerville 
the formation is 328 feet below sea level; at Delphos, about 9 miles due 
north, it has dropped to 453 feet, about 14 feet to the mile. At Lima the 
Trenton lies about 390 feet below sea level, but at Elida, 6 miles to the 
northwest, the rock is 34 feet lower. At Beaver Dam, in the northeast 
corner of the county, the rock lies 443 feet below tide level, while due 
east of Lima, along the western line of Hardin county, the Trenton is 
found at about 470 feet below sea level. 
