acid sulfate soils - maryborough area · 25 42 25 36 25 30 25 24 25 18 152 36 152 42 152 48 152 54...
TRANSCRIPT
25 42
25 36
25 30
25 24
25 18
152 36 152 42 152 48 152 54
152 36 152 42 152 48 152 54
25 42
25 36
25 30
25 24
25 18
7160000mN
7205000mN
65
70
75
80
85
90
95
00
7160000mN
7205000mN
65
70
75
80
85
90
95
00
460000mE 495000mE65 70 75 80 85 90
460000mE 495000mE65 70 75 80 85 90
Toogoom
Pialba
Urangan
Maaroom
Torbanlea
TORBANLEA - PIALBA
ROAD
BRUC
E HIG
HW
AY
BOONOOROO ROAD
MARYBOROUGH
HERVEY BAYDundowran
Susan River
Mary River
Granville
Tinana MARYBOROUGH TUAN FOREST ROAD
Bingham
Walligan
Takura
Hervey Bay
Great
SandyStrait
Owanyilla
Boonooroo
Tuan
Mungar
BR
UC
E
HIG
HW
AY
Oakhurst
Mary River
Tinana Creek
Sugar Mill
HERVEY BAY (CITY)
MARYBOROUGH (CITY)
WOOCOO
TIARO
TIARO
26 00
25 30
25 00
152 30 153 00
152 30 153 00
26 00
25 30
25 00
0 1515km km
SCALE
Point Vernon
Tawan
Toolara Forest
Coonarr
Burrum HeadsBuxton
Horton
Toogoom
Colton
Mount Benargie
Sunny Glen
BaupleMount Urah
Woolooga
Woodgate
HERVEY BAY
LOCALITY MAP
Study Area
Maryborough - Hervey Bay Study
Maryborough - Tiaro Study
UranganPialba Hervey Bay
Torquay
Pialba South
Bingham
Lynwood Isis Junction
TakuraHowardBurrum
Torbanlea
Duckinwilla
Aldershot
Mount Doongul
Oakhurst
MaryboroughYengarie
Childers
Cordalba
GRE
AT
SAN
DY
STR
AIT
Maaroom
BoonoorooTuan
Tinnanbar
Tin Can BayToolara
BrooweenaPilerwaAramara
BlackmountTiaro
Netherby
GundiahGootchie
Gunalda
Grout Mountain
NA
NA
LPa0S2
LP
NA
a1S2
S2
LP
A0S1
S2
NA
LP
NA
LPLP
NA
S2
NA
NA NA
NA
NA
NA
NA
LP
NA
NA
NA
NANA
A0S2
NA
NA
NA
a0S3/S4
NA
NA
S0
A0S2
S0
A0S2LP
A0S2
NA
LP
A0S1
S0
LP
a0S1
LPa1S2
LP
a1S2
A0S2
S0a1S2
A0S2A0S0
LP
A0S1
A0S0
A0S1
NA
NA
A0S2
A0S1 NA
S0
LP
NA
NA
NA
LP
NA
A0S1LP
LP
A0S1
LP
A0S2
A0S1
S0LP
A1S2
A0S1
NA
A0S1
A0S1
LPLP
S0
NA
LP
S0
A0S1
NA
LP
A0S1
S0
NA
LPA0S1
A0S2
A0S1
NA
A2S3/S4LP
A1S3/S4
NALP
A0S2
A1S2
A0S1
S3/S4
NA
A0S1
LP
NA
A0S3/S4A0S2
a0S3/S4
A1S2A2S3/S4
A0S1
A0S1
S0
LP
A0S1
LP
A1S2
A1S1
LPA0S1
S0
A2S3/S4
S3/S4
A0S1
A1S2
NA
LPNA
NA
a0S2
NA
a0S3/S4
a0S2
LP
LP
A1S0
LP
NA
NA
LP
S3/S4
LPLP
LPA0S2LP LP
NA A0S2
LP
NA
NA
NA
A0S2NA
A0S1LP
LP
A0S1
LP
A0S1
LP
A0S1
a0S1
a0S1a0S1
LP
S3/S4
S3/S4
S3/S4
NA
NA
NA
S2
NA
LP
NA
S3/S4
NA
LP
NA
LP
NA
NA
NA
S3/S4LP
LP
LP
S3/S4
LP
S2
LPNA
NA
NAS3/S4
NA
S3/S4
S3/S4
NAS3/S4
S3/S4
NA
S3/S4
S3/S4
NA
NA
NA
LP
NA
LP
NA
NA
NA
LP
NA
LP
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
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ACID SULFATE SOILS - MARYBOROUGH AREA
LP
NA
LAND WITH A LOW PROBABILITY OF ACID SULFATE SOIL OCCURRENCE
Land between the 5m AHD contour and the outer limit5 of Holocene, estuarine ASS (ie. land <5m AHD) as mapped at this scale, with low probability of ASS occurrence. Limited field investigation.
LAND NOT ASSESSED
Land not assessed for ASS as part of this survey. It may include non ASS land beyond the boundary established as the limit of Holocene, estuarine, pyrite sediments5 but insufficient or no field testing was carried out.
Acid sulfate soil is the generic term used to define soils derived from estuarine sediments containing iron sulfides (pyrite) or containing the acidic products of the oxidation of sulfides. The term includes actual and potential acid sulfate soils.
An "A" preceding the soil depth code indicates the probable depth to a soil layer or horizon where a field pH of ≤4.0 is first encountered. A field pH of 4.0 or less is used as an indicator of an Actual Acid Sulfate Soil (AASS) which has mobile acidity in the form of ionic hydrogen, aluminium, iron or acid salts. Extensive areas with high actual acidity derived from sulfide oxidation may constitute a significant environmental hazard. Some soils with high organic matter may have low pH from organic acids. An 'a' preceding the depth code indicates the probable depth to a soil layer or horizon with field pH ranging from >4.0 to ≤5.0. This may or may not be a result of ASS oxidation.
An "S" preceding the soil depth code indicates the probable depth to a Potential Acid Sulfate Soil (PASS) layer or horizon. PASS are soils where the oxidisable sulfur percentage of pyritic origin exceeds the prescribed 'action criteria4' at which treatment is required if disturbed. Testing for Oxidisable sulfur is conducted by the Total Oxidisable Sulfur (TOS) method, the Chromium Reducible Sulfur (SCR) method or the Peroxide Oxidisation - Combined Acidity and Sulfate (POCAS) method.
Oxidisable sulfur 'Action Criteria' that trigger treatment are currently: Sands, 0.03 S%; Loams to light clays, 0.06 S%; Medium to heavy clays, 0.1 S%. NOTE: For disturbance > 1000 tonnes the action criteria is 0.03% regardless of soil texture.
The outer boundary of Holocene estuarine ASS commonly occurs at the intersection with hard rock or other materials of non estuarine origin. It is either at the 5m contour or at lower elevation. This boundary is established using limited field checking at the boundary itself, together with the use of contour lines and geological map boundaries. There is no field assessment beyond the 5m AHD contour level. It should be noted, however, that certain lithologies on land above 5m AHD may contain sulfidic material of non estuarine/Holocene origin. Additionally, much older, estuarine, pyritic sediments may occur at depth on land >5m AHD.
NOTE: This map should be used in conjunction with the accompanying report covering this area.
Borehole locations where profiles were described in detail and samples taken for analysis
Local Authority boundary
Digital Cadastral Data Base
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REFERENCE
0 11000 2 3 4metres kilometres
SCALE 1 : 50 000
Projection: Universal Transverse Mercator (MGA Zone 56)Horizontal Datum: GEOCENTRIC DATUM OF AUSTRALIA (GDA94)
Note: This map is GDA94 compliant
ACCURACY STATEMENT:Due to varying sources of data sets, spatial locations may not coincide when overlaid.
Produced at the Indooroopilly Sciences Centre by Natural Resource Information Management, Natural Resource Sciences, Department of Natural Resources and Mines.
DISCLAIMER:While every care is taken to ensure the accuracy of this product, the Department of Natural Resources and Mines makes no representations or warranties about its accuracy, reliability, completeness or suitability for any particular purpose and disclaims all responsibility and all liability (including without limitation, liability in negligence) for all expenses, losses, damages (including indirect or consequential damage) and costs which you might incur as a result of the product being inaccurate or incomplete in any way for any reason.
CARTOGRAPHY by G J Finney, Natural Resource Information Management, Department of Natural Resources and Mines, Indooroopilly Sciences Centre, Brisbane.
C The State of Queensland (Department of Natural Resources and Mines) 2002.
PROJECT MANAGEMENTC R Ahern, QASSIT, Natural Resource Sciences, Department of Natural Resources and Mines, Indooroopilly Sciences Centre, Brisbane.
SURVEY by P R Wilson, H M Anderson and D M Brown, Natural Resource Services, Department of Natural Resources and Mines, Bundaberg and C R Ahern,QASSIT, Natural Resource Sciences, Department of Natural Resources and Mines, Indooroopilly Sciences Centre, Brisbane.
LABORATORY ANALYSIS by Natural Resource Sciences Laboratories, Department of Natural Resources and Mines, Indooroopilly Sciences Centre, Brisbane.
23
Cane Assignments (July 1995) ACID SULFATE SOILSMARYBOROUGH AREA
Ref. No. NR&M-MAC-I-A0 3285
0 - 0.5m
0.5 - 1m
1 - 2m
2 - 3m
3 - 4m
4 - 5m
>5m
0
1
2
3
4
5
5+
A0
A1
A2
A3
A4
A5
A5+
S0
S1
S2
S3
S4
S5
S5+
Depth DepthCode
Depth to ActualAcid Sulfate Soil2
(pH ≤4.0)
Depth to PotentialAcid Sulfate Soil3
ACID SULFATE SOILS (ASS)1 ON RELATIVELY UNDISTURBED LAND
Depth to StronglyAcidic Soil layer2
(pH >4.0 to ≤5.0)
a0
a1
a2
a3
a4
a5
a5+
NOTE:
A0S2
a1S2
S1/S2
The depth codes above imply that a predominance of profiles in the map unit fall within the nominated depth range.
Actual acid sulfate soil layers (designated with an A code) often overlie potential acid sulfate soil layers (designated with an S code). Where this occurs e.g. the map unit is coloured according to the depth of the upper surface of the 'actual' layer (A0) and overlayed with yellow dots. An 'a' preceding the soil depth code e.g. indicates a strong acid soil layer with field pH ranging from >4.0 to ≤5.0. This may or may not be a result of sulfide oxidation. While 'a' depth code is shown on the map, no colour is assigned to it.
In areas where there is varying depth to an ASS layer that cannot be separately mapped at the operative scale, two colours are used to designate the dominant depths. This appears as equal width striped colours. e.g.