86 G. M. DAWSON ON BORINGS IN 
[.—BorING AT ROSENFELD STATION. 
This station is situated on the South-Western Branch of the Canadian Pacific 
Railway, about fifteen miles north of the 49th parallel and ten miles west of the Red 
River, in the alluvial plain of the Red River valley. The boring was conducted 
by Mr. W. E. Swan, under instructions from the Canadian Pacific Railway Com- 
pany. Through the kindness of Mr. W. C. Van Horne and Mr. J. M. Egan, I have 
been enabled to obtain from Mr. Swan, the logs of-this and other borings made 
by him in the Northwest. Samples of the strata passed through in this well had been 
given by Mr. Swan to Mr. Acton Burrows, of Winnipeg, who was so obliging as to 
transmit them to Ottawa for my examination. The section given is, therefore, not 
precisely in the form of Mr. Swan’s log, but is based also on my own examination 
of the materials obtained. The boring was made by means of an ordinary percussion 
drill, and was carried to a depth of 1,037 feet from the surface. The strong flow of brine 
met with in this well (a point subsequently referred to) is the most remarkable feature in 
connection with it. 
In the subjoined section, the formations supposed to be represented are indicated in 
the column to the right :— 
Feer 
NERO 15008 e0acaod0 2 0000 TODO To be vono000 4 
Py Jari SE ODICIA YA eee eee eee ceeaecer-ccre 111 
S.-Sandianderavel:-eteeleerrheeseemeeemereel 10 
4. Boulder-clay (“hard-pan.”}.................... 12 
Ds PDOULGETS eee rte erreneenepeerebecce-r- tree 6 
MEL SeklissocodtngocounoD dood og e00es 005000 69 ] 
7. himestonessouce fesse nb steel ee 15 | 
S'MRedishale = reset er cde steltisiat stelarsieletaleisuricisialciersiciers 5 
Gh (nh oe 56650n bobo hotooonoondooucogage Jotana 10 | 
10 Haw etS ron SrioonsoL daoGoo HB OooRaSuunn nee eee 30 f Maquoketa shales. 
11 Eine rreyisandstone test rce-rpes cree 40 | 
12AChalk YA MESONE- eee -ereeeke eee een 30 | 
13: Red'shale Re done aan ommen es eme 160 J 
14. Cream-coloured limestone.........,...:.,........ 305 ) Galena limestone passing 
15 AREISHAIE RE dada daopioocn 5 poodooUdouINUdO Bande 75 } below into Trenton. 
ROUE Ko GUda Bodoaddb'sadcod op Gadmaddass 50 St. Peter sandstone. 
Lae Erk-re des hale svete seimishsteitetsletelaisteleiaisieiteeiereisieials 50 | 
18. Reddish and greenish shale..................... 25 | Lower Magnesian 
19-2Blusbhand'ereyishale cr teislalscle-ie\elollolieis stelelsielereieieys 20 [ limestone (?) 
2OMPRed shale iereremtstoleleterele/-(clujoielerel ofajoie eieicleleiars\aieisierersieinre 15) 
AE ES HossobbanD00 ob ODA Lo 0T 06006 2  Laurentian. 
MOTATE RE re eee eee Lee 1,037 
The soil, forming the first member of the above section, has the usual characters of 
that of the region, consisting of the underlying silts mingled with vegetable matter. The 
silts (described in the log as “blue clay”) are those of the ancient lake which, about the 
close of the Glacial Period, occupied Red River valley, and which has been called “ Lake 
Agassiz” by Mr. Upham. The coarser layers are composed of fine angular and subangular 
grains with formless argillaceous material; the finer become a blackish-grey plastic clay. 
The specimens secured of the sand and gravel deposit contained no fragments over three- 
