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THIS B00>^ MUST NOT BETAKEN OUT OF THE ROOM i \ 1/1 \ '»..'« i ! 9^i m June 4- 191'^ k* w " Reprinted from the Canadian Record of Science, April, 1892. The Physical Features of the Environs of Kingston, Ont., and their History. By A. T. Dbummond. Two years ago, when revisiting for three months the scenes of my earlier years at Kingston, the opportunity occurred again of examining, hammer in hand, the Lauren- tian ridges, the limestone escarpments, and the picturesque islands which contribute uo much to the variety of the landscape in the neighbourhood of the city, as well as make its environs so geologically interesting. When a student at Queen's, I had gone over the ground, occasionally with Dr. Geo. Lawson, now of Dalhousie College, Halifax, but then of Queen's, sometimes with the late Dr. John Bell, of Montreal, who was an enthusiastic botanist, and often, alone, and as the familiar spots, one after another, came, after long years of absence, once more to view, many a pleasant memory of extended rambles and of interesting discoveries was recalled. The geological notes then made when a student have not been published, but some of them are still of interest and will be refeired to here and be supplemented by the more recent notes. Lying almost at the point of contact of the old Archaean rocks with those of the overlying Cambrian and Trenton, and in a section of countiy where the evidences of glacial action in quaternary times are very marked, besides being at the foot of Lake Ontario where the waters of the Great Lakes join the St. Lawrence amid the diversified features and scenery of the Thousand Islands, Kingston has much to interest the geologist. The city itself is, in reality, situated on what appears to have been an ancient island, whose length was about six miles with an extreme "breadth i ' I !1 I' M ,>'.,• , ',,-• •**•»« ■M %^- «JI/ U^0 ■,1. I >!!' J-- w h^ mIJ r^ !l ft i \H 1 - It no Canadian Record of Science. of three miles, ani whoso boundaries, apart from the harbour front, are now well defined by the limestone escarpment, which, leaving the lake shore west of the Lunatic Asylum, skirts the broad valley of Little Cata- raqni Creek some miles in a northerly and then north- easterly direction, until, veering ai'ound to the south east as it appi*oachos Kingston Mills, it meets Great Cataraqir Creek and then parallels it in its entry to the harbour at Kingston. The harbour fronting Kingston is, in its main expanse, underlaid, probably throughout, by the Black River lime- stones, judging by the comparative uniformity of the soundings in the channel. The usual depth there is from ten to twelve fathoms. Off Cedar Island the bottom may have suffered by the disturbances which affected th<* whole Laurentian area, as I have found there the greates \ depth of the harbour— seventeen fathoms. The precise area occupied by the palaeozoic rocks in the environs of the city, and their age, have not hitherto been as accurately defined as is desirable, and a brief reference to these and the Laurentian rocks is necessary. LAURENTIAN RGP'IS. The Laurentian i-ocks are mat with in great masses at Kingston Mills, and thence eajtwai-d and north-westward, forming here and among the ^J housand Itslands the gneissic ridge, as it were, which connects the Laurentian areas of New York State with those of Canada. Nearer Kingston, these rocks appear on the summit of the Fort hill, on the banks of Ilaldimand Cove, and on Cedar and Milton Islands, in each case forming ridgea which — as elsewhere among the Thousand Islands — lie in a general north-east and south-west direction. The Laurentian strata have been here elevated into these groat ridges at a period subsequent to Black Eiver times, as, on the Fort hill, the limestone strata are tilted up at n high angle on both sides of the , i;t^G^;a^ent, and overlie the Lau'entian from the base to ; •:• ..• • . • ••• ' ••• *. .* • • .••• on the Laurentian are generally, however, quite devoid of ■: fossils, and not infrequently the lower layera have the appearance of a conglomerate, the imbedded material being small worn boulders of gneiss and quartzite from three inches to one foot in diameter, and numerous sharply angu- lar pieces of quartz, chiefly of smaller size. On the north side of the Grand Trunk Bailway track the limestones terminate west of Kingston Mills, but on the south side they extend in a partly covered escarpment about five miles farther eastward, and cover the intervening space thence to the St. Lawrence. OraiHien Island, and the greater portion of Howe, Wolfe, and, possibly, Simcoe Islands, arc of Black River age. At Island Blumei cientlj) Island, west Trunk epoch. Canada drawn would i rocks ai From the envi from th( influence i'idges b( whole coi the nece period. ' limestone the city Cataraqui visible in scale, nea the great the Laur( even on unworn conspicuo Whilst daring th period anc fi'om the tions of g Envirom of Kingston, Ont. TRENTON ROCKS. 113 At Cape Vincent, in New York State, opposite Wolfe Island, the limestones contain, amongst other life, Calymene Blumenbachii, Bron, and Leptivna sericea. Sow, which suffi- ciently indicate their Trenton origin. At Horse Shoe Island, at the head of Wolfb Island, about eight miles south- west of Kingston, and again at Coilinsby, on the Grand Trunk Railway, the rocks appaiently belong to the same epoch. Thus, if any actual di£ '■ notion is to be retained in Canada between the Black River and Trenton epochs, a line drawn across the St. Lawrence through these localities would appear to about indicate where the Black River rocks are succeeded by the true Trenton. QUATERNARY DEPOSITS. From the period of the Ti enton to that of the ornary, the environs of Kingston appear to have ha .i ng rest from the inroads of the water and from other disturbing influences, beyond the special elevation of the Laurcntian ridges before referred to, and the general elevation of the whole country here and to the north-eastward, to admit of the necessary fall for the great glaciers of the glacial period. The traces loft by quaternary forces are seen in the limestone escarpments at many points in the environs of the city ; the broad river valleys now occupied by Little Cataraqui and Great Cataraqui Creeks; the ice grooves, visible in every direction, but developed on a magnificent scale, near the upper steamboat landing on Wolfe Island ; the great deposits of sand at Cataraqui and elsewhere ; and the Laurcntian and other boulders scattered everywhere, even on the top of the Fort Hill, where the huge block of unworn Potsdam sandstone, half buried in the soil, is a conspicuous object. Whilst the history of the site of the city and its environs during the vast ages which elapsed between the Trenton period and the close of the Tertiary, is almost a blank, yet, from the latter time, its histoiy begins once more. Sugges- tions of great forces having been at work come, ap we ' 4 ',,1 ^! 'i \ MM i| : n :M£^Ms^^»^.. 114 Canadian Record of Science. have seen, from all sides— from the lake bottom, the river valleys, the grooved rocks, the great stretches of escarp- ments, the scattered boulders. At the close of the Pliocene the Ijaurentian area in the townships to tho northward and eastward was higher than it presently is, and circum- stances seem to show that this elevation extended so far over the limestone area in the vicinity of Kingston that the lake shore at that time was probably outside of a line drawn from Stony Point, off Sacket's Harbour, to South Bav Point, in Prince Edward County. A rise of 100 feet would bring to the surface nearly the entire area presently under water between this limiting line and the city- excepting what would then foim two inlets or river chan- nels — the relicts, it may be, of two glaciers — the one on tho west side of Duck Island and e.Ktending inwards towards Kingston to within three miles of the present Nine-mile Point Lighthouse, and tho other on the cast side of tho same island and extending in the direction of the present American channel in tho St. Jvawrenco, and to within four miles of the south-west point of Wolfe's Island. ^ . ■ * LAUBENTIAN RIDGES. At this time, also, the Laurentian ridges, which are s'^ numerous in the rear townships, and are illustrated around Kingston in the elevations comprising Cedar Island, the Fort Hill, and the south side of Ilaldimand Cove, had already appeared. These ridges which in reality indicate, in their prevailing general north-east and south-west course, the direction taken by the vast internal forces which gave rise to their upheaval, have had much to do with giving the direction taken by the great glaciers of quaternary times, and have also shaped tho original outline of many of the numerous lakes in the Laui mtian country in the imme- diate rear of Kingston, however much the glaciers may have subsequently smoothed the roughness of this outline. The general course of tho numerous elongated lakes lying here in the laps of these ridges, and near the border-land where the Laui'entian and the higher formations meet, is a are Lratod iland, had licate, louree, gave igthe ItitneB, of the limme- may lutUne. lying ir-land 3t, is a Environs of Kingston, Oni. 115 most pronounced north east and south-west, nnd I cannot think that their outline is to be attributed solely to softer sti-ata having been worn away. It was rather that the ridges and intervening valleys gave the course to the glaciers, and, in that course, these valleys had their outlines smoothed and their depths somewhat deepened, and were thus prepared for their new position as the beds of lakes in the less elevated country of the present day. The lie of the lakes, in sections of the Laurentian country farther west, takes diiferent directions— sometimes to the south- eastward and across the general line of glacial action— and it will, I suspect, be found, in such cases, that this lie of these lakes conforms to that of the ridges in the surround- ing country. ORIGIN OP THI ISLAND. Following the elevation of the land and the incoming of the glacial period, came probably the first outlining of the ancient island on which Kingston is situated. The present broad beds of Little Cataraqui and Great Cataraqui Creeks were gradually chiselled out, first by glaciers and then by the waters of what would then be two deep inlets from the lake and a river divided by the island, and thus the lime- stone escarpment which in large part forms the island's front was created. The sand deposits in the direction of Glenburnie, again at Cataraqui, and again in the estuary west of the Lunatic Asylum, would seem to indicate that the Little Cataraqui Creek valley was the channel down which the great body of the water from the Laurentian heights immediately beyond here came. The difl'orent beds of sand in the estuary also appear to mark three successive stages and conditions of deposit — the lowest, a coarse sand laid down in deeper water, the middle a strongly wave- marked bed, indicative of rapidly flowing waters, and the highest a deposit of fine silt-like sand, which has settled during comparatively still waters. ; TUB OUTLET OF LAKE ONTARIO. Perhaps the most interesting questions are cor.nected % % I \ \. sr^ an 116 Canadian Record of Science. U || ^ ii with the outlet of the waters of Lake Ontario into the St. Lawrence here. Have these waters since Ontario expanded from a river into a lake always flowed downwaixis to the ocean over the Laurentian ridge at the Thousand Islands ? Presently there is a depression here between the Adii-on- dacks of Nr ^ork State and our Canadian Laurentian ridges su * di o admit of this downwai-d flow, but, between . ar/at ^- and Cape Vincent, it is a comparatively shallow )pi ''i n. The lake is undoubtedly pre-glacial, but t' 'lewhat higher elevation of the Laurentian area at the cose of the Pliocene to admit of the descent of the glaciers, would make it probable that at this time, as well as during the melting and recession northward of the ice area, the outflow was by way of Lake Oneida and the Mohawk Valle3\ Even at the Park towards the centre of the Thousand Islands, the grooves in the sandstones lie S. 40° W., showing that there must have been some eleva- tion in the heart of the Laurentian ridge there to admit of the necessary ice flow, not merely there but onwards to the south-westward over the ice-grooved limestones at Kingston and Wolfe Island. During the glacial epoch, and its inter- glacial periods, if any, here, the outlet was, the American geologists insist, so completely blocked with ice that the flow was necessarily by way of the dohawk Valley to the ocean, but it does not seem requisite to assume that there was this ice blockade, as the already existing elevation probably formed a more than ample barrier to the lake waters. If this view of Laurentian depression be correct, then the St. Ijawrence, immediately before the commencement of the ice age, was a modest stream, taking its rise here in the Adirondacks or Canadian Laurentians and flowing towai-ds the sea iji very much the same course a» now, for this course was not much altered by the subsequent ice flow north-eastward from the Laurentians. The river from Brockville, immediately above which the Laurentian ridges under the river disappear, downwards to the first rapid near Edwardsburg, has, oh the whole, a considerable uniformity 0fd( tivel Otta raucl and oscilJ Qaeb( sea, J whici: (reoj'g the ic of the the va much ( The 01' loca physicji Lake C depress the sou change to the V in the ( with tha Quebec i peninsu has givei great are been furt the Tren of Lake terms, br( Environs of Kingston, Ont. Ill of depth in the channel, and flows through a low, compara- tively level valley, unobstructed by islands. The river Ottawa, on the other hand, was, probably, at this time a much larger stream, as the great limestone escarpments and Ihe terraces along its course seem to indicate. The oscillations of the earth's surface in eastern Ontario and in Quebec had led to its being at one time an arm of the sea, and at anothei*, perhaps later time, a great river, which Mr. J. K, Gilbert even tL nks found its rise in the Geoi-gian Bay and drained the upper Great Lnkes. During the ice age, and the subsequent Champlain times, the path of the icebergs and glaciers was, in a general sense, down the valley of the Ottawa, and this, no doubt, occasioned much of the wear of the strata in the i ver's course. The oscillations in level over great stietches of country or local warpings of the strata, will explain many of the physical features of a district. Thus, around the outlet of Lake Ontario there were changes of this character. A depression at the Thousand Islands, and a rise in level at the south-eastern end of Lake Ontario, led to a gradual change in the lake's outflow from the valley of the Mohawk to the valley of the St. Lawrence. This change took place in the Champlain era, and was probably contemporaneous with that condition of depression in Kastern Ontario and Quebec and that condition of flood and depression in the peninsula of Ontario west of the Thousand Islands, which has given us the sands and clays of the one section and the great areas of the clays in the other. Since then there have been further warpings of the surface, involving a rise from the Trent Valley westward and on the south and east sides of Lake Ontario. These disturbances have, in general terms, brought us to the order of things at the present day. ... ■;*• V I! filiiiir I -| 'liWWiir-MJiilM'i II fi ,m<