s'^ ^onfinenfaf ^exxe^. No. 1. r Physical Configuration OF he Australian Continent. . With Illustrative Maps and Diagrams. ERNEST FAVENC. riLLiAM Brooks & Co. Ltd., Sydney and Brisbai^i. 1905. J Comprehensive View, in relief, of tK Continent of Australia. o ^roofts's ^onfinenfaC §exie^. No. 1. The Physical Configuration OF The Australian Continent. With Illustrative Maps and Diagrams. BY ERNEST FAVENC. William Brooks & Co , Ltd., Sydney and Brisbane 1905. Q I JOHN FORREST, THE EXPLORER, Who, in 1874, was the first to cross the wide belt of country in the Centre of Australia that separated the settlements of the west from those of the east, this book, on the Physical Contour of our Continent, is dedicated by the Author. Sydney, 1905. 136.1463 PREFACE. The following work is a plain and simple descriptioai of tlhe surface of oixr continent, and will, it is hoped, prove acceptable to all Australians — both old and young — whic ai'e desirous of becoming better acquaitnted with the nattural featitres^ of their great country-, their home. For this reiason, both in text and maps, all political boundaries, cities, towns, &.c., have been largely ignored The contents are adapted for the use of every State. The publishers trust that this book will further rind favour as the first of a Continental Series which ij is hoped will tond to foster and encourage the steady growth of a Naitioual Australian feeling. THE PUBLISHERS. INTRODUCTION. It may sound paradoxical to say so, but forty or fifty years a facilities for the formation of water-courses. The culminating point of the highlands of the east is 73'28 feet above sea level. In the west it only reaches PHYSICAL CONFIGURATION OF AUSTRALIAN CONTINENT. 13 3800 feet. In tlie north the long slope inclines south- ward, and in the eastoin portion it difiei's from the west- ern in favoiu'ing the f onuaiion of long river-courses ; the counter slope is presented towards the Timor and Ara- fura Seias. In the south there is an obvious absence of pronounced land-raas'ses and rivex'-coui'ses ; but in the easitern portion a continuation of the lofty eastern high- lands boldly faces the Southern Ocean. Plateaux.-. The great plateau of the interior of the continent is thus guarded and enclosed by a con- tinuous line of ranges, ridges, and gentle slopes, at times presenting a formidable barrier, and at times an almost invisible rise, but always forming an unbroken water- parting between the drainage of the short, abrupt slope and that of the long. A description of the Thibetan plateau, written by the late Professor Hughes, might well be applied to Australia, only altering the word 'southward' to "east- ward." "The traveller who scales them (the highlands) from the eastward finds, when the crest of the moun- tain-wall is passed, that he is upon an immense plain. The irregular and peak-crowned rampart through which he has ascended forms the barrier of this vast and elevated region : its highest points rise considerably above the general level of the tableland, and, seen from below, appear to form the connecting links of a con^ tinuous mountain-chain. But, viewed as a part of the whole continuous mass of high land, they sink into un- importance as compared with its more solid extent and vastly gi'eater proportions." Making due allowance for difference in altitude, the above might have been written of the great inland pla- teau of Australia. This interior plateau is bisected by a defined water- slied, continuous in character, but neither prominent nor elevated, nevertheless a ti'ue watershed which can be traced north from the head of Spencer Gulf to the edge 14 BROOKS's CONTINENTAL SERIES. of the plateau immediately south of Daly Waters tele- graph station on the Overland Line. The eastern section is much more depressed than the western one, but, on the other hand it has the natural features boldly defined and the river chaivnels follow the orderly drainage sys- tems of other continental lands. It is in this siec(tion that the most extensive plain of the interior is to be found, namely, the Murray Plain. A man could start from Port Augusta, at the head of Spencer Gulf, and travel on foot to the Gulf of Carpentaria, without crossing an altitude of one thousand i'eei; He could cross into the Lake Eyi-e basin, and, following up the Geoi'gina, arrive at the town- ship of Camooweal, situated at its head. He would there be at an altitude of 71-3 feet, and within a few miles of the edge of the plateau. The edge of the plateau would perhaps be a few feet higher. ..Then he would descend the O'Shanassy to the Gregory, and follow that river to the Gulf. ' •. . In the southern and western portion of this sectioin oi the plateau the slope of tllie land converges towards -aai area of depression, the lowest point of which is Lake Eyre, the southern shore of which lake is 39 feet below sea level ; but the phenomena of Lake Eyre and i ts svtr- roundings are dealt with in their proper place. The western section of the plateau is directly op- posed to the eastern. 'It is not so deeply depressed, and its natural features are vague and disappointing, partic- ularly itsi drainage system, which is without order or method. The surface ascends slightly, conversely to the eastern section, rising very gi-adually from west to east, and finding its culnunating point in the abrupt and sudden rise of the M'Donnell Ranges. The salt lakes of this section are over a thousand feet above sea level, while those in the eastern section are less than 300. The edge of this section of the plateau is highest on its northern face and lowest on its southern. PHYSICAL CONFIGURATION OF AUSTRALIAN CONTINENT. 15 An imaginary trip across central Australia gives a good n ^ idea of the general contour of !> k the continent. Starting fiom the coast at the mouth of an important river we ascend a steep range to a plateau, and find our- selves still on the tributary waters of the river we have left. Crossing the basin, another range is ascended, but we are once more on coastal waters, running into the Pacific. This, in itself, is a strange formation, one coastal plateau ovei'lapping another plateau, and diverting the drainage. When the third ascent is made, we are at last upon the main inland plateau at about a level of 1400 feet. A' steady descent is then made until the level is but 350 feet. Shortly afterwards the sur- face commences to rise to- wards the M'Donnell Ranges (the nominal centre of Aus- tralia}, averaging 3C00 feet above sea-level, with culmin- ating peaks over 4000 feet. Descending to about 1700 feet, there is a constant but gradual decline of some 500 miles long to the edge of the plateau, which edge is here a descent of a few hundred feet only. The rivers there P$)l continue constant, lonar and ArPd/gme^.^Sfi > Op^hg//,v3 ffange \Lahe Maodona/d S >M'Le/s/er ^ \M'Meugfifm4rj6" 2 'M'Gi/es 42/0'''^ ^ '\Alice Spkisos /926" ~ ^ ^ Eyres C \Dia//iantina filler 600''^ Ma\ne Riier t LoyGneACH 6/8"^ .VOATAOV£ /72S" ^Dri//nmon(/fi3/7ffe fpgnnes fPsnge 16 Brooks's coNTrxKNTAL skkies. even courses to their home in the Indian Ocean, flanked by ranges having occasional altitudes of over 3000 feet. Plains. — The coastal plain which surrounds the con- tinent, and on which the edge of the interior plateau abuts, varies greatly in breadth. Its greatest average width is on the northern coasit ; the eastern and wes- tern plains are of about the same average width ; and on the south it is for a long space indeterminable. But the coastal plain that encircles Australia is worthy of a more detailed description, seeing that it is of such extent, and that tlii-ough it run the rivers that empty direct into the sea. Its altitude varies considerably, and it is travel sed by numerous ranges. On the east &ide of the Muaray it may be said to com- mence, branching eastward from the great Murray Plain which runs inland. Soon the upstarting Grampians confine it within the commencement of two stern boundary lines. On one side the ocean and on the other the continuous barrier of the Great Divide. Here the plain is watered by many rivei's, and px'eserves a fair average width until it approaches the east coast where it narrows down to a mea*e strip and starts its northern caieer on a very narrow basis. Gradually it widens out until the fertile valley of the Hunter affords it a more extended latitudinal space. North of the Hunter it shrinks again and runs an even course until the Macpher- son Range, starting from the Great Divide, cuts across it to the ocean. The plain is now narrow, but soom the Great Dividei, receding from its proximity to the coast, ati'ords it iiioiie space which the Burnett River at once takes advantage of. The coastal plain is here divided longitudinally by chains of ranges, which start from the Ga-eat Divide and continue independent careers to the peninsula of Oape York. East of the chains of coast ranges is the low-lying plain adjoining the ocean. West- yard sxt plateaux, which aa-e bounded to the westwaid by the rise of the Gr^eat Divide, which is here far removed from the Pacific. The main tributaries of the Fitzroy drain the most southern of these plateaux, and. unit^'d. PHYSICAL CONFIGURATION OF AUSTRALIAN CONTINENT. I 7 descend through a gorge in this longitudinal coast chain, and f^ow through low country to the ocean. Above thia, there is another plateau drained in a similar way, by tihe Burdekin, only the gorge through which that river descends to the lower plain is very cointracted. Follow- ing the tropic from east to west no less t'lian three river basins are met with! before crossing the Great Divide. First the lower basin of the Fitzroy (Q.), then ascending a steep range (the Boomer Mountains), we find ourselves on a plateau thi-'ough which flows the Mackenzie, running a. southern and western course. Crossing this river we as- cend another range (the Driimmond liauge), and are on the Belyaudo, rmming north tO' join the Burdekin. Still following the tropic and crossing th© Belyando, a third range is met with, the Great Divide, the edge of the inland plateau, and ascending it, we are on Thomson watere and in the basin of Lake Eyre. After crossing the Burdekin the coastal plain is crushed once more into a narrow strip, only asserting its rights to some room at the Herbert, and further north at the Normanby. The plain, where it is drained b}- the sluggish Wat-ex's of the Great Gulf, is of considerable extent. The ranges hug the I'acific, and leave the Carpentariaai shorei an ample margin, and the broad region of Arnhem Land, its eastern hoaii, woiuld be wholly in possession of the plain, but that it is vei-y broken by plateaux and chains of hills. West of the Victoria River the coastal plain is much traversed by ranges, one of which, the King Leopold, forms a semicircular barrier round a poi-tion of the plain, and here, the gorge formation once more asserts itself at the head of the Fitzi-oy (W.A.). The plain narrows once more west of the Fitzroy, and for more than a hundred miles is untravei'sed by river*. At the Oako^er River the characteristics of an extended coastal plain, nourishing rivers and creeks springing from the edge of the inland jjlateau, and water- ing a level land dotted with short ranee^^ and isolated 18 BROOKS's CONTINENTAL SERIES. peaks, is resumed one© more. On its southward Wjay the plain grows narrower, and when it turns east, its width is greatly redueed, in fact round the Great Bight, the differenctei between it and th© inla.nd plateau is ahnost un- defined ; nor ar© there any rivers in this part of it. Ap- proaching Spencer Gulf it is wider, but still riverless. It is na«rrow on the east side of the Gulf of St. Vincen,t, and gradually merger into the Murray Plain once more. The Murray Plain is the most extensive of the in- terior ; its altitude is under 500 feet ; then come the Lake Eyre Plain and the Bulloo Plain. Both botanically and zoologically there is a marked ditierence between the coastal plain and the inland plains and plateau. Rang^es. — The ranges of Australia have always been a puzzle to the geographer, and it is only now that a true knowledge) and estimate of them can be made. The principal range of Australia is the Great Divid- ing Range, the study of which may be appropriately commenced at the abrupt southern end, in about 142deg. east longitude, and which then inins parallel with the south coast to the east coast, where it turns northerly. The Great Dividing Range was so called in the early days, when the pioneers found that it fonued a prolonged divide between the waters otf the coast and the watei-s which ran to the then unknown west. The name was singularly appropriate, and was retained as the exploration of the ©ast©m portion con- tinued north. In or about the 27th parallel south lati^ tude however, the Great Dividing Range, or tih© short slope of the inland plateau, recedes from the immediate neighbourhood of the ocean and pursues a more westerly course. As at this point its appearance and height are not striking, and the coastal tiers of ranges between it and the shore — the upheaved edges of subordinate pla- teaux — are more imposing in appearance, a geographical mistake which has lasted for some time was fallen into. The coast ranges were taken to be the main dividing range. PHYSICAL CONFIGURATION OF AUSTRALIAN CONTINENT. 19 aud under this stolen title they were charted, the name contiiiiiiing up the Cape York peninsula. In modem geographies even, it is still stated that "these elevations on the eastern side of Australia form a continuous, though most irregular, cordOlera or chain of heights, extending from Gape Howt to Cape. York, and kmcnvn by the general name of the Great Dividing Range," oblivioua of the fact that the coastal ranges at the base of the Cape York peninsula only form the watei-sliied between the rivers flowing into the Pacific and those flowing into the Gulf of Carpentaria. Reference to the coloured map showing "The River Systems of Australia" will at once make this clear. The Great Divide, the true edge of the interior plateau, continues its northerly course — screened, as it were, to seaward by the coast ranges- -until be- tween the parallels 20deg. and 21deg. south latitude, whence it turns abruptly to the west, and bids farewell t<; the Pacific slopie- The Great Divide has now it« short slope facing north, and maintainsi duriug the diiration of this face a low altitude and few prominent features. South of the Gulf of Carpentaria is, however, an excepition, its character there being that of a rugged, broken range. It assumes its western aspect at about 122deg. east longi- tude, but in appearance it is still but insignificant, and, as on the eastern coast, is dominated by the superior ele- vatior of the peaks rising from the ranges that inter- vene betwixt it and the Indian Ocean. At about south latitude 34deg. it turns east, adhering to the coastline that fronts the Southern Ocean, and towards the western termination of the Great Australian Bight, in 124deg. east longitude, it ceases to have any prominent material existence. The highest points in this chain of between 8 and 9000 miles in length axe as follows : — 20 BROOKS S CONTINENTAL SERIES. SOUTHERN OCEAN SLOPES* Over 6000 Feet. Moiunt Feathertop Victoria. Over 5000 Feet. Mouat Hothani Ccpe „ Bogong „ Wills ,, Gibbo The Cobboras. The Snowy Plateau The Twins Mount Baw-Baw „ Tamboritha „ Wellington ,, Buffalo Peak ,, Dai'gal „ Kent ., Cobbler ,, Selwyu „ Buller ,, Howitt. Over 4000 Feet. Mount Pinnabar „ Baldhead ,, Towanga ,, Benanibra * The word " slopes " is here used to indicate both the inland and seaward slope. PHYSICAL CONFIGURATION OF AUSTRALIAN CONTINENT. 21 Mount Tambo Victoria. „ Matlock ., Torbreck St. Bernard Burrows „ EUery , , Wellington „ Useful Castle Hill Notch Hill PACIFIC OCEAN SLOPES. Over 7000 Feet. Mount Kosciusko. N.S.W. Over 6000 Feet, The Pilot Mount Sea-View Ram's Head. ,, Over 5000 Feet. Forest Hill Ben Lomond ,, Mount Tate :• ,, Clarke ,, Murragurai ,, Chandler's Peak Look-out Point •, Over 4000 Feet. Mount Lambde „ Cla.rence ,, „ Marbden ,, 22 BROOKS'S CONTINENTAL SERIES. Mount Beemarung N.S.W. ,, Capoombeta „ Wilson's Peak ,, Beulah Spring ,, Mount Binda „ „ Cordeaux „ Gourada ,, „ Horrible ., ,, Jindulia ., ., Talbingo ., „ Tumanang ,, ,, Delegate Victoria. „ Tinga Ringa The remaining course of the Great Dividing Range is unmarked, either on the Carpentarian, Arafuran, or Indian Oceaai slopes, by any elevation above 4000 fieet. Mount Kosciusko is the highest altitude in Australia. Next to it comes the companion moixntain. formerly Mueller's Peak, but now Mount Townsend ; and this mountain is supposed to be the one named Kosciusko by Strzelecki. The name having beem transposed by the Lands Dept. on finding the nevp point (now Mount Kos- ciusko) to be the highest. The following efforts at determining the height of Mount Kosciusko have been made at various times in. the past : — Test. Feet. Strzelecki ... Boiling water ... 6,500 Mueller ■ •• Boiling water ... 7,000 Clarke ... Aneroid ... 7,175 G^eodetical Survey of Victoria ... Triangulation • 7,266 Lendenfeldt ... . . . Aneroid ... 7,171 Wragge ... Aneroid ... 7,525 PHYSICAL CONFIGURATION OP AUSTRALIAN CONTINENT. 28 but tliese altitudes, except Wragge's, apply to the original Mouut KosciTisko, now Mount Townsend. The height of Kosciusko above the level of the sea is officially given as 7328 feet. Its height above the surface of Lake Eyre, however, is 7.367 feet on account of that lake being 39 feet below sea level. Taking the centre of the lake as a level, it is 7388 feet. Mount Kosciusko and Lake Eyre are the highest and lowest points in Australia. The local names of this mighty Divide are as many and varioxis as its changes of appearance and attributes. It may be said to commence in the Black Range, a range which, though isolated in situation, is still connected with the main range, and fonns a convenient starting point for descriptive purposes. On the Southern Ocean t:lope it bears the names of Hume, Barry and Bowen : on the Pacific slope it commences with the Muniong, wherein the loftiest elevation of the Divide is found, then the Monaro, Gourock, Cullarin, Liverpool, New England, and Bunya-bunya Mountains The Great Divide is then without local names, until after it has deflected fi'oni tho Pacific slope and turned its short front to the north. Then towards the Gulf of Carpentaria, it is known under the names of Kirby, Selwyn, and the Barclay Tableland. From the Barclay Tableland it skirts that large por- tion of Australia wherein what may be called the Evaporation-cum-Soakage System prevails in the in- terior, and here it is siinply the edge of the great plateau ; its only name on its western course is the Gre;U Antrim Plateau. On the Indian Ocean slope, the range. too, is locally nameless ; its character, as the abrupt edge of a tableland, not being striking enough to divert attention from the many other ranges which heire traverse the coastal plain ; and it jDerpetuates this char- acter up to its ostensible disappearance at the western end of the Great Bight Then reappears asi the Hamp- ton, Gawler, and Flinders Ranges, and again disappears when near the Murray. But although it a^ssumes during 24 BIIOOKS'S CONTIXEXTAL SEKIES. its tedious careei* every possible character from an inac- cessible mountain rampart to a gentle sloping prairie, every altitude from over six thousand feet to the heiglit of a house-top, it always di'aws an imperative line I'ound Australia between the coastal rivers and the inland drainage ; save and except the Murray. That river alone, after gathering in between its banks the spoil of many, many streams from the inner slopes, emerges triumphantly to the Southern Ocean. Practically, a man could start fi'om the Black Range, on the left bank of the Murray, travel round the continent and return to the right bank without having crossed stream or river on his long course. Theoretically, he could pursue the same journey without crossing the smallest water channel. Most of the manj' ranges on the southern and southeTu- and-eastern slope are, more or less, connected with the main divide, which here, in its highest and boldest aspect, throws cff several prominent spurs, both ocean- ward and inland. Some of these have peaks in them over four thousand feet. On the inland side is Mount Canoblas, 4610 feet, and on the Macpherson Rarge, a Pacific spur, there is Mount Lindsay, 5700 feet, and Mount Barney, 4300 feet in height. In the north there are, however, many ranges and plateaux, which hug the Pacific, and although a connec- tion can be traced to the parent stem, are virtually in- dependent of the Great Divide. Though rugged and imposing in appearance, tliey aa'e of no great altitude. Two isolated mountains on either side of the Birrdekin, ai-e prominent peaks from seaward, Mount Elliot, 4060 feet, and Mount Dalrymple, 4255 feet. On the Cape York Peninsvila, there is also one cluster of ex- ceptional height, known as the Bellenden-Ker Group ; here there are many peaks which pass the 4000 feet limit : Mount Massie, 4014; Sophia, 4253; Harold, 4150; Bartle Frere, 5438; Centre Peak, 5158; South Peak, 5000. South of Cambridge Gulf some prominent ranges MAP SHOWING RANGES, TABLELANDS, AND PLAINS OF AUSTRALIA. Mote.— The Main Divide is marked by a thicker line on tin Map to give it pioniinence, and not to indicate that it is of greatei elevation than other ranges, which, in many cases, is not the fact. c^ o PHYSICAL CONFIGURATION OF AUSTRALIAN CONTINENT. 27 assert themselves, but though, like the King Leopold Range, their appearance is foniiidable, their height is under 4000 feet. Facing the Indian Ocean the coast ranges are many and rugged, especially the Hammersly Ranffe, but the highesit point, Mount Bruce, is only 3800 feet. A group of mountain ranges, known under many names, runa north and south, and faces the eastern shore of Spencer Gulf ; the highest peak in it, however, is under 4000 feet. The independent ranges of Central Australia are many and scattere:! ; the great central group is called the M'Donnell Ranges. These are situated in the neighbour- hood of the tropic of Capricorn, and consist of a most in- tricate series of ranges, the leading feature of which seems to be to assume east and west lines, and in this forma- tion they extend nearly 300 miles. They rise in a series of tecrracesi, tier behind tier, until the highest ridge, which is the northern one, culminates in peaks over 4000 feet high. Two of them, Mount Edward, 4649 feet, and Mount Heughlin, 4756 feet, are situated en the mostnorth- em tier, and Mount Sender, 4437 feet, and Mount^ Giles, 4210 feet, are about midway, overlooking one of the lati- tudinal valleys that characterise these ranges. The head tributaries of the Finke, the Hugh, and the Todd, rise in a labyi'inth of water-coui'ses in these ranges, and flow south, taking a course at right angles to tihe east and west trend of the valleys. The Finke (or Larapinta) has two main tributaries which have their sources respec- tively at Mount Sonder and Mount Giles. It then ma,kes its way through another range, the Krichauf Range, to the south, pursuing a remarkably sinuous course in so doing. The Lake Eyre basin dr'ains nearly all of the long slope of the M'Dounell Ranges, but although the highest points, Mounts Edward and Heughlin, are north of its sphere of drainage, no rivers flow to the westward from this group. Their elevation, the large area they cover 28 BROOKS's CONTINENTAL SERIES. and the extensive break they make in the great inland plateau, render these ranges a most important feature in the contour of Australia. Another collective group is named the Musgrave Ranges, and contains some peaks approximated at 4000 feet, and one, Mount Woodruffe, estimated at over five. The Peterman and many more isolated ranges are dotted over the great pleateau, but none of them high enough to be considered noticeable features in the general contour or to become the sources of rivers. THE RIVERS OF AUSTRALIA. The rivers of Australia are divided into two distinct types, the coastal and the inland. The coastal rivers have their sources in the seaward slope of the Great Dividing Range, or some independent range on the coastal plain, and flow direct into the oceans and sens surrounding Australia. The inland rivers are again sub- divided into the Murray River system, the Lake Eyre system, and the Evaporation-cum-Soakage system. The Murray River System — The Murray and Darling rivers together collect the accumulated drainage of the eastern interior, and then, by way of the Murray, it is discharged into the Southern Ocean. If you glance at any large wall-map of Australia, the Darling has the appeairance of being the main stream, it holding a direct south-west course throughout, and being but tempor- arily deflected by its junction with the Murray, while that river holds a consistent western course and is then turned south by the Darling. The Murray drains that slope of the main Divide which faces north and west, and like itsi main tributary to the northward, the Murrum bid- gee, it has its birth-place in the highest altitudes of those slopes. After leaving the mountains, the Murray has but one tributary on its right bank, the Murrumbidgee, which, however, brings with it in its turn, the lengthy Laehlan. Before the Murrumbidgee actually junctions PHYSICAL CONFIGURATION OF AUSTRALIAN CONTINBNT. 21) with the Murray, it is disorganised by the low, flat country, and throws out arms which join the Murray in- dependently and are mistakenly called rivers. The Murray and Murrumbidgee are the only snow-fed inland rivers. The Lachlan is more of the central Australian type, ditoh-like, intermittent and inclined to run out. The Darling shares the task of mothering the inland streams fo"-- J -— . Watershed of the Upper Fitzroy (Q ). with the Suttor, which brings in the Belyando and Cape Rivers, there is a gorge in the Leich- hardt Range impassable to four-footed animals, .araJ- URA. MELVILLE IV^^ ^ - z^- -^a^ .i^ X Macdi — (^ r--: 'i-V^" vV ^ ..•0^' - ^' o«c-' e SWA^' Lt^A^ JiUSTRALl^ The River Sys The River Systems of Austral! £. PHYSICAL COKFIGURATION OF AUSTRALIAN CONTINENT. 39 and through this gorge the Upper Burdekiu, as it is locally oalled, descends to the coastal plain and becomes the Lower Burdekin. ^ '-^V X / . \ Y. •> d) 1 \ \ \ ^\^ iJ ^\ \ ("""^ I . > . 1 ^v . Vi \ 1 e> -2. V '^l ' /| ■^ "S. V ^^>,^ N lej. xr>^ v'* V3 V ^1 \ J ^ r^N^ V ^•'i .'