STRATIGRAPHICAL ORDER. 101 
The interval between the Ames and Cambridge limestones at this 
point is the smallest yet recorded in the State, but both limestones are 
unmistakable, and moreover, the Blue Rock section, 10 miles to the 
eastward, shows a similar though not equal reduction of this interval. 
The Upper Freeport horizon is very distinctly marked in this 
neighborhood. On the Ashton, Duval and Cunningham farms, the coal 
obtains a good development as to thickness and character. It is known 
as the Basin Vein, a name suggested by its capricious and unsteady 
character. The Upper Freeport limestone is 3 feet thick on the Ashton 
farm, and is pure enough for the mason’s use. Jit has been burned here 
on a small scale. It is in every respect characteristic. 
The Lower Freeport coal does not fail to leave its mark in every 
exposed section where it is due, but it is of no value as a source of fuel - 
throughout this immediate region. 
‘Passing westward into Perry county, the Kittanning coals can be 
followed by openings made upon one or both seams on every farm along 
the railroad line. At McLuney, at Tague’s, and at the tunnel, the coal 
has been mined for 20 or more years for the general market, mainly from 
the Middle Kittanning seam. 
A few miles south of McLuney Station, on section 16, Bearfield 
township, Perry county, the Upper Freeport horizon exhibits once more 
a characteristic product, which has been missed from our sections for 
the last 50 miles. A valuable deposit of blackband ore has been dis- 
covered and quite extensively worked on the Whitlock farm, for Moxa- 
hala Furnace. A long and clear section can be obtained from this im- 
mediate vicinity. It is as follows: 
Ft. In. 
Red shales. 
MA Meslone—— CAMA Ge sasccsascdecesccdacsesecessjcccavsiec(olese sciences sasiicsiceeeeee se 3 
Iinitervallsssccee $0006 686008000 0B0500 SES SCHOO OT BGS GOB DOEO SDE HMOs O SCOR OneE Ne 50 
Coal—Brush Creek of Pa., Salineville Strip ven (IN@s WB). 600008606 2 6 
libervallitaessncmenaesciecretecesccccascdeeewotiacsedas scotub sevcbeeeslensloseeas dadasades 29 
Ore MODUL AT Asoc devas coeds cen cecases shiny esos cts ecedetatesccs' sect cadcdsautasleadts 1 
Winnie Tava bsenasaue tessee hie on oaiioes fa Savioalcee siwcetosecealsssee eA lddeuessoapiewsls seas 12 
Blackband Ore and Coal, Upper Freeport (No. 7) ..... sc..scecceceeseeees 3 
NLS ava eeteeccesssecccreceirorc case steceosbcessesecessessesseesesioassevosebssses 49 
Ore NOMUIAM ree cercoccsccsccleessssssessts SOOOS0O SS. CCODECHSD LEB HOEECS Gane eNO EGE 0 6 
interval Maced erent onsee scorn eke heceenaed ccodedeasteaseaeaeoticlabeogeccs 12 
THERO-AGUOD), Socdec Sap oo TUCOSECOC OC OSBCE DECADE ECCS OA Oa TEE OTC ER CRere Terre 4 
Gre lmelandicalCareOus\aes.cccvccsccsecccscccsecsesacesorcsdes eiecessesvees's 1 
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