GEOLOGICAL APPRAISAL OF THE MOOTWINGEE AREA, NEW SOUTH WALES

1967 ◽  
Vol 7 (1) ◽  
pp. 103 ◽  
Author(s):  
R. B. Wilson

The results of various photogeological, geological and geophysical programmes in the Mootwingee Area of northwestern New South Wales are discussed.In a structurally complex area, a central horst of outcropping Precambrian rocks trends north-northwestwards. This is flanked both to the east and west by basins containing considerable thicknesses of Palaeozoic sediments.The problem of whether the western structural basin, now represented by the Topar syncline, is coincident with the Cambro-Ordovician basin of sedimentation (?Bancannia Trough) is also discussed. The presence of infolded and down-faulted remnants of Cambro-Ordovician sediments within the Precanibrian basement, to the north of the area discussed, suggests that Cambro-Ordovician sedimentation may have extended further eastward than is now revealed in outcrop.The main source-potential of the area appears to be confined to the Cambro-Ordovician sequence with perhaps very limited potential in the thick Devonian sediments. The drilling of a stratigraphic well in each of the basinal areas respectively to the west and east of the centrally-outcropping Precambrian block, appears justified. Such drilling should resolve some of the above-mentioned problems of depositional limits, as well as assist in evaluating the petroleum potential of the region.

2018 ◽  
Vol 2 (2) ◽  
pp. 169-241
Author(s):  
Volker W. Framenau ◽  
Barbara C. Baehr

The wolf spider (Lycosidae Sundevall, 1833) genusArtoriaThorell, 1877 is revised for New South Wales and the Australian Capital Territory, Australia, to include 34 species, 21 of which are new to science:A.albopilata(Urquhart, 1893),A.altaFramenau 2004,A.beaurysp. n.,A.barringtonensissp. n.,A.belfordensissp. n.,A.berenice(L. Koch, 1877),A.bondisp. n.,A.boodereesp. n.,A.comleroisp. n.,A.corowasp. n.,A.equipalussp. n.,A.extraordinariasp. n.,A.flavimanaSimon, 1909,A.gloriosa(Rainbow, 1920),A.grahammilledgeisp. n.,A.helensmithaesp. n.,A.howquaensisFramenau, 2002,A.kanangrasp. n.,A.kerewongsp. n.,A.lineata(L. Koch, 1877),A.marootasp. n.,A.mckayiFramenau, 2002,A.mungosp. n.,A.munmorahsp. n.,A.myallensissp. n.,A.quadrataFramenau, 2002,A.slatyerisp. n.,A.streperasp. n.,A.taeniiferaSimon, 1909,A.teraniasp. n.,A.triangularisFramenau, 2002,A.ulrichiFramenau, 2002,A.victoriensisFramenau, Gotch & Austin, 2006, andA.wilkieisp. n.LycosapruinosaL. Koch, 1877, currently listed inArtoria, is considered a nomen dubium.Artoriaare largely forest dwellers, although some species have preferences for more open areas such as riparian or coastal environments or grasslands. Consequently, the genus mainly occurs east and west along the Great Dividing Range, although some species can be found into the Riverina, Cobar Peneplain and Darling Riverine Plains IBRA regions to the west.


1996 ◽  
Vol 36 (3) ◽  
pp. 299 ◽  
Author(s):  
TS Andrews ◽  
RDB Whalley ◽  
CE Jones

Inputs and losses from Giant Parramatta grass [GPG, Sporobolus indicus (L.) R. Br. var. major (Buse) Baaijens] soil seed banks were quantified on the North Coast of New South Wales. Monthly potential seed production and actual seed fall was estimated at Valla during 1991-92. Total potential production was >668 000 seeds/m2 for the season, while seed fall was >146000 seeds/m2. Seed fall >10000 seeds/m2.month was recorded from January until May, with further seed falls recorded in June and July. The impact of seed production on seed banks was assessed by estimating seed banks in the seed production quadrats before and after seed fall. Seed banks in 4 of the 6 sites decreased in year 2, although seed numbers at 1 damp site increased markedly. Defoliation from mid-December until February, April or June prevented seed production, reducing seed banks by 34% over 7 months. Seed banks in undefoliated plots increased by 3300 seeds/m2, although seed fall was estimated at >114 000 seeds/m2. Emergence of GPG seedlings from artificially established and naturally occurring, persistent seed banks was recorded for 3 years from bare and vegetated treatment plots. Sown seeds showed high levels of innate dormancy and only 4% of seeds emerged when sown immediately after collection. Longer storage of seeds after collection resulted in more seedlings emerging. Estimates of persistent seed banks ranged from 1650 to about 21260 seeds/m2. Most seedlings emerged in spring or autumn and this was correlated with rainfall but not with ambient temperatures. Rates of seed bank decline in both bare and vegetated treatment plots was estimated by fitting exponential decay curves to seed bank estimates. Assuming no further seed inputs, it was estimated that it would take about 3 and 5 years, respectively, for seed banks to decline to 150 seeds/m2 in bare and vegetated treatments.


Oceania ◽  
1957 ◽  
Vol 27 (3) ◽  
pp. 190-209 ◽  
Author(s):  
Malcolm J. C. Calley

2006 ◽  
Vol 285 (1-2) ◽  
pp. 245-255 ◽  
Author(s):  
M. T. McHenry ◽  
B. R. Wilson ◽  
J. M. Lemon ◽  
D. E. Donnelly ◽  
I. G. Growns

1851 ◽  
Vol 2 ◽  
pp. 239-240
Author(s):  
Thomas Anderson

About thirty years ago a species of manna, obtained from the Eucalyptus Mannifera, was brought from New South Wales, and was examined by Dr Thomas Thomson, and afterwards by Professor Johnston, both of whom ascertained it to contain a new species of sugar, different from the mannite which exists in ordinary manna. The author had, through the kindness of Mr Sheriff Cay, an opportunity of examining a very different species of manna, remarkable both from its chemical constitution, and from its possessing a definitely organised structure. This substance was discovered by Mr Robert Cay in 1844, in the interior of Australia Felix, to the north and north-west of Melbourne, where it occurs at certain seasons on the leaves of the Mallee plant, Eucalyptus Dumosa, and is known to the natives by the name of Lerp.


1997 ◽  
Vol 166 (6) ◽  
pp. 290-293 ◽  
Author(s):  
Tim J Sladden ◽  
Alan R Hickey ◽  
Thérèse M Dunn ◽  
John R Beard

1977 ◽  
Vol 17 (1) ◽  
pp. 42 ◽  
Author(s):  
P. R. Evans

The only area of Western New South Wales considered to have petroleum potential is the intracratonic, fault-bounded Darling Basin, which evolved during Late Silurian to Early Carboniferous time and which contains up to 7000 m of sediments. Initially deposition was controlled by a shallow marine transgression from the east. Regression during the Middle Devonian was followed by basin-wide extension of alluvial sedimentation, which prevailed until the Early Carboniferous. Strike slip movements during Late Devonian time along old basement trends fragmented the basin into distinct troughs. Movements along the same trends during the Carboniferous modified the troughs' configuration. Permian, Mesozoic and Cenozoic sag-like downwarps in various parts of the region had negligible effect on bedding attitudes.The only play of the Basin thought to have a chance for significant petroleum generation and entrapment lies in the Lower and (?) Middle Devonian, where marginal marine deposits flank highs created by strike slip movements. This play is regarded as one of high risk for modest returns, but its continued exploration seems warranted in view of proximity to markets and to the Moomba-Sydney pipeline.


1997 ◽  
Vol 37 (4) ◽  
pp. 439 ◽  
Author(s):  
T. S. Andrews ◽  
C. E. Jones ◽  
R. D. B. Whalley

Summary. Four experiments were conducted to determine the effects of temperature, light and leaf extract solutions on the germination of Giant Parramatta grass [GPG, Sporobolus indicus (L.) R. Br. var. major (Buse) Baaijens] collected from a population on the North Coast of New South Wales. In the first experiment, seeds were subjected to one of a range of temperature combinations immediately after collection and again after 8 and 27 weeks. Germination was restricted to a narrow range of alternating temperatures with a peak at 35°C day/15°C night when seeds were tested immediately after collection. More seeds germinated when the samples had been stored, although germination remained depressed at constant temperatures. These data indicate that freshly collected GPG seeds are subject to primary dormancy and that few would germinate in the field immediately after seed fall. In a second experiment, seeds were buried beneath leaf litter in a pasture immediately after collection. After 7 months, the seeds were exhumed and subjected to either constant (20°C) or alternating (35/15°C) temperatures in either full light, reduced red:far-red (R : FR) light or dark treatments. Over 95% of GPG seeds germinated when subjected to alternating temperatures, regardless of light treatment. At constant temperatures, 97% of seeds germinated under full light, 59% at reduced R : FR light and <1% in dark treatments. A germination response to alternating temperatures and/or light treatments has been reported in pasture weeds and may be an adaptation to detecting gaps in the pasture canopy. Consequently, the germination of GPG in a pasture may be manipulated to some extent by altering the amount of pasture cover using grazing management, mowing and fertiliser applications. In experiment 3, leaves from a range of coastal grasses were mixed with water and the solutions were used to germinate GPG seeds. Solutions extracted from setaria (Setaria sphacelata) leaves completely inhibited GPG germination while 27% of GPG seeds germinated when imbibed with kikuyu leaf extract solution. Solution extracted from carpet grass (Axonopus affinis) leaves had the least effect on GPG germination. In experiment 4, the effects of solutions that had been leached from the leaves of either setaria or carpet grass on seed germination, and root and shoot lengths of GPG seedlings were compared. Germination was less inhibited by leachate solutions compared with the extract solutions used in experiment 3. Seedlings in setaria leachates had significantly shorter roots and shoots than both those germinated in carpet grass leachates and control seedlings. This may explain, at least in part, why carpet-grass-based pastures are readily infested with GPG while setaria-based pastures are relatively resistant to infestation. The potential for allelopathic interactions between GPG and setaria to be fully utilised to reduce the abundance of GPG in coastal New South Wales pastures is discussed.


1971 ◽  
Vol 11 (50) ◽  
pp. 307 ◽  
Author(s):  
GJ Murtagh

The effectiveness of chemical seedbed preparation for sod-sown oats was studied using varying intervals between spraying and sowing. Four herbicides were compared in a second experiment. Both experiments were conducted on paspalum (Paspalum dilatatum) dominant pastures on red basaltic soil on the North Coast of New South Wales. Herbicides were most effective when applied at 6.7 kg acid equivalent a hectare. At this rate, the highest yields of dry matter and nitrogen were obtained when there was a three-week interval and considerably less when there was no interval. A mixture of 2,2-DPA (2,2-dichloropropionic acid) and amitrole (3-amino-1,2,4-triazole) was more effective than 2,2-DPA alone with a three-week spraying interval but there was no difference with a six-week interval. Both amitrole and a mixture of amitrole and ammonium thiocyanate were ineffective for chemical seedbed preparation on paspalum pastures;


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