scholarly journals Nickel Uptake by Cypress Pine (Callitris glaucophylla) in the Miandetta Area, Australia: Implications for Use in Biogeochemical Exploration

Minerals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 808
Author(s):  
Kenneth McQueen ◽  
Augustine Alorbi ◽  
Joseph Schifano ◽  
David Cohen
Keyword(s):  
New South ◽  
New South Wales ◽  
In Situ Analysis ◽  
Ultramafic Rocks ◽  
Portable Xrf ◽  
South Wales ◽  
Nickel Uptake ◽  
Callitris Glaucophylla ◽  
Cypress Pine

The uptake of Ni and other elements by Callitris glaucophylla (white cypress pine), from weathered ultramafic rocks under varying depths of transported regolith cover, is examined at two sites in the Miandetta area, New South Wales, Australia. Results show that C. glaucophylla can accumulate elevated Ni concentrations in the needles (leaves or phyllodes) from underlying Ni-enriched regolith up to two orders of magnitude above the normal micronutrient levels required for the species. Such uptake levels occur in areas with high total Ni in the soil and regolith despite the relatively low mobility of the Ni due to its presence in a low availability form. This highlights the importance of biotic processes in extracting Ni from soil. The needles of C. glaucophylla could provide an effective and convenient sampling medium for reconnaissance biogeochemical exploration for Ni mineralisation and anomalies where transported regolith is less than ~3 m thick. The study has also demonstrated the potential for in situ analysis of Ni and other elements in the needles by portable XRF.

Soil and vegetation response to thinning White Cypress Pine (Callitris glaucophylla) on the North Western Slopes of New South Wales, Australia

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
Keyword(s):  
New South ◽  
New South Wales ◽  
Vegetation Response ◽  
The North ◽  
South Wales ◽  
Callitris Glaucophylla ◽  
North Western ◽  
Cypress Pine

scholarly journals The Pattern of In Situ Stress in Onshore Basins of New South Wales

2015 ◽  
Author(s):  
Mojtaba Rajabi* ◽  
Mark Tingay ◽  
Oliver Heidbach ◽  
Rosalind C. King
Keyword(s):  
New South ◽  
New South Wales ◽  
In Situ Stress ◽  
South Wales

Clinoferrosilite-bearing kelyphite: a breakdown product of xenolithic garnet, Delegate breccia pipes, New South Wales, Australia

2000 ◽  
Vol 64 (3) ◽  
pp. 469-479 ◽  
Author(s):  
W. Keankeo ◽  
W. R. Taylor ◽  
J. D. FitzGerald
Keyword(s):  
New South ◽  
New South Wales ◽  
Sudden Change ◽  
Ultramafic Rocks ◽  
Breakdown Product ◽  
South Wales ◽  
Bulk Chemical ◽  
Temperature And Pressure ◽  
Lower Temperature ◽  
Metamorphic Terranes

AbstractGarnet pyroxenite xenoliths from the Delegate nephelinitic breccia pipes, New South Wales, Australia, contain relict garnets (py40 alm39 gr21) which are replaced by dark kelyphitic rims resulting from garnet breakdown. The kelyphite is composed of a lamellar intergrowth of secondary minerals, in which the lamellae are <1 μm in width. Analyses by SEM and ICPMS reveal that the kelyphite has an identical bulk chemical composition to the primary garnet. Kelyphitic rims on garnet are well known from xenoliths and xenocrysts in kimberlite pipes and from tectonically-uplifted mafic and ultramafic rocks in some metamorphic terranes. Orthopyroxene occurs in metamorphic kelyphites and it has been assumed that orthopyroxene is also the breakdown product of garnet transported in basic-ultrabasic magmas. However, TEM study of Delegate kelyphite shows that the ultrafine lamellae do not contain orthopyroxene but are instead composed of magnesian clinoferrosilite (En45Fs55), and lesser ferroan spinel and anorthite. The clinoferrosilite is probably the inversion product of initially-formed magnesian protoferrosilite. The breakdown reaction is believed to result from a sudden change to lower temperature and pressure conditions when the xenoliths were transported in the Delegate magma from ∼40 km depth to the surface.

scholarly journals Changes in forest structure over 60 years: tree densities continue to increase in the Pilliga forests, New South Wales, Australia

2012 ◽  
Vol 60 (1) ◽  
pp. 1 ◽  
Author(s):  
Robyn K. Whipp ◽  
Ian D. Lunt ◽  
Peter G. Spooner ◽  
Ross A. Bradstock
Keyword(s):  
Stand Structure ◽  
New South ◽  
New South Wales ◽  
Basal Area ◽  
Forest Types ◽  
Natural Ecosystems ◽  
South Wales ◽  
Eucalyptus Crebra ◽  
Callitris Glaucophylla

Studies of long-term vegetation changes are critical for enhancing our understanding of successional dynamics in natural ecosystems. By comparing forest inventory data from the 1940s against field data from 2005, we document changes in stand structure over 60 years in forests co-dominated by Callitris glaucophylla J.Thompson & L.Johnson, Allocasuarina luehmannii (R.Baker) L.Johnson and Eucalyptus crebra F.Muell., in central Pilliga, New South Wales (NSW), Australia. Sampling was stratified across two forest types and across a 1951 wildfire boundary, to assess the effects of initial stand structure and early disturbance on stand dynamics. Stems in the size range tallied in the 1940s (>8.9 cm DBH for Callitris and >11.4 cm for Allocasuarina and Eucalyptus) of each genus increased about three-fold in density and about four-fold in basal area over 60 years, with similar trends in both forest types and fire zones. On average, there were 3638 stems ha–1 in 2010, of which 86% were small Allocasuarina and Callitris (<11.4-cm and <8.9-cm diameter at breast height, DBH, respectively). These results illustrate a continuation of forest encroachment that was initially documented in the late 1800s. However, increases in Allocasuarina have received little attention compared with Callitris recruitment. In the absence of disturbance, ongoing increases in stand stocking may be expected.

A survey of the regeneration of some problem shrubs and trees after wildfire in western New South Wales.

1979 ◽  
Vol 1 (4) ◽  
pp. 363 ◽  
Author(s):  
AD Wilson ◽  
WE Mulham
Keyword(s):  
Seedling Establishment ◽  
Tree Species ◽  
New South ◽  
New South Wales ◽  
Common Species ◽  
Fire Intensity ◽  
Natural Fires ◽  
South Wales ◽  
Average Survival ◽  
Cypress Pine

The regeneration of several shrub and tree species in western New South Wales was recorded after widespread natural fires in the summer of 1974175. At 25 locations, plots were established in the wake of the fires and observations were recorded of the rue damage, the regrowth of the plants and post-fire seedling establishment. Interest was centred on species regarded as woody weeds. Fourteen months after the fires, the average survival of seven of the most common species was: Callitris columellaris (white cypress pine) 275, Acac~a aneura (mulga) 16%, Dodonaea attenuafa (narrow-leaved hopbush) 26%, Cassia eremophila var. platvpoda (punty) 48%, Acacia homalophylla (yarran) 87%, Eremophila mitchell~i (budda) 88% and Eremophila sturtii (turpentine) 87%. These results are for plants whose leaves were totally scorched or burnt. For Dodonaea attenuafa and Cassia eremophila there was a large difference in recovery between locations, a difference which was not explicable in term of fire intensity or shrub size. Post-fue seedling establishment occurred with these two shrubs, particularly with D. attenuata, which had high seedling numbers on eight of the eleven locations.

Sign in / Sign up

Export Citation Format

Share Document