Geology |
The Stratford unit (Sf) west of Heywood showing the location of Site GP63. Note: Thomson (Th) map unit in the foreground. | Looking from the Newry mapping unit in the foreground towards the terrace and higher level Stratford mapping unit. |
Original Vegetation The original vegetation was a grassy open forest of Eucalyptus tereticornis which has now largely been cleared. | Remnant Eucalyptus tereticornis trees on the Stratford mapping unit near Newry. |
Soils Most of the soils on this map unit are texture contrast soils which means that they have light textured surface soils (sandy loams to sandy clay loams) abruptly overlying a clay subsoil. Gravel and stones (up to 100 mm in diameter) may occur throughout the profile on hill slopes and the flanks of drainage lines. Small areas of sand deposits occur immediately east of Blackall Creek. One example is some dunes just north of Stratford. These dunes are probably formed from sand blown out of the creek bed. Most of the surface soils are generally dark greyish brown loamy sands to sandy loams. They have a bleached sub-surface (typically pale brown to pale brownish grey) of similarly textured material abruptly overlying, at about 20 to 40 cm, mottled brown and yellowish brown clays. Mottled clays or sandy clays normally continue to at least 1 m often accompanied by gravel and stones. The soils are most likely to be classified as Brown or Yellow Sodosols using the Australian Soil Classification. | Road cutting near Stratford showing river gravels in the deep subsoil. |
Depth cm | Texture | pH | EC dS/m | Carbon % | Ca meq % | Mg meq % | K meq % | Na meq % | ESP % | Coarse sand % | Fine sand % | Silt % | Clay % |
0-5 | FSL | 5.7 | 0.07 | 2.9 | 2.5 | 2.2 | 0.3 | 0.3 | 9 | 51 | 24 | 13 | |
5-20 | FSL | 7.7 | 0.11 | 1.2 | 2.8 | 0.3 | 0.8 | 5 | 50 | 25 | 19 | ||
20-70 | MHC | 7.8 | 0.31 | 1.9 | 7.0 | 0.3 | 3.1 | 26 | 3 | 33 | 18 | 44 | |
70-100 | LC | 8.5 | 0.40 | 1.7 | 7.1 | 0.2 | 4.0 | 31 | 3 | 33 | 18 | 46 | |
100+ | 7.5 | 2.60 | 0.6 | 7.6 | 0.2 | 5.7 | 41 | 4 | 25 | 25 | 46 |
Depth cm | Texture | pH | EC dS/m | Carbon % | Ca meq% | Mg meq% | K meq% | Na meq% | ESP % | Coarse sand % | Fine sand % | Silt % | Clay % |
0-17 | SL | 5.8 | 0.06 | 2.0 | 2.7 | 2.0 | 0.3 | 0.4 | 20 | 41 | 17 | 17 | |
17-20 | SL | 6.4 | <0.05 | 1.1 | 1.3 | 0.1 | 0.3 | 11 | 30 | 39 | 17 | 3 | |
20-60 | MHC | 6.5 | <0.05 | 3.0 | 10 | 0.4 | 1.8 | 12 | 5 | 8 | 2 | 79 | |
60-90 | MHC | 7.3 | 0.24 | 1.6 | 32 | 0.2 | 12.0 | 27 | 3 | 5 | 1 | 83 | |
90+ | MHC | 7.1 | 0.28 | 1.0 | 10 | 0.2 | 13.0 | 54 | 9 | 14 | 6 | 67 |
Depth cm | Texture | pH | EC dS/m | Cl % | Nitrogen % | Carbon % | Ca meq% | Mg meq% | K meq% | Na meq% | H meq% | ESP % | Coarse sand % | Fine sand % | Silt % | Clay % | LAT % |
0-2 | FSL | 6.4 | 0.26 | <.02 | 0.48 | 4.5 | 9.3 | 1.9 | 0.7 | 0.2 | 12.0 | 1 | |||||
2-10 | FSL | 6.0 | 0.18 | 4.7 | 1.0 | 0.2 | 0.6 | 3.1 | 5 | 7 | 41 | 34 | 13 | 1 | |||
10-15 | FSL | 1 | |||||||||||||||
15-25 | LC | 6.8 | 0.12 | 2.8 | 3.0 | 0.1 | 0.7 | 11 | 9 | 37 | 32 | 21 | 1 | ||||
25-50 | MC | 7.2 | 0.22 | 3.0 | 7.9 | 0.2 | 2.0 | 16 | 6 | 23 | 27 | 44 | 1 | ||||
50-90 | MC | 7.6 | 0.41 | 0.05 | 0.9 | 7.0 | 0.2 | 2.7 | 27 | 8 | 29 | 27 | 37 | 1 | |||
90+ | LC | 7.9 | 0.55 | 0.06 | 0.8 | 8.0 | 0.2 | 3.4 | 28 | 4 | 23 | 30 | 42 | 1 |
Depth cm | Texture | pH | EC dS/m | Nitrogen % | Carbon % | Ca meq% | Mg meq% | K meq% | Na meq% | ESP % | Coarse sand % | Fine sand % | Silt % | Clay % | LAT % |
0-10 | FSL | 5.3 | 0.23 | 0.23 | 2.4 | 2.3 | 0.9 | 1.3 | 0.2 | 13 | 46 | 25 | 10 | 1 | |
10-40 | FSL | 5.5 | 0.06 | 0.8 | 0.3 | 0.5 | 0.1 | 12 | 50 | 28 | 10 | 1 | |||
40-70 | LMC | 7.3 | 0.09 | 2.8 | 6.1 | 1.6 | 0.5 | 17 | 3 | 29 | 22 | 50 | 2 | ||
70-100 | MC | 7.6 | 0.08 | 2.6 | 7.9 | 1.2 | 0.8 | 16 | 2 | 18 | 33 | 48 | 1 | ||
100+ | MC | 7.7 | 0.12 | 1.9 | 7.4 | 0.4 | 1.3 | 29 |
Depth cm | Texture | pH | EC dS/m | Cl % | Nitrogen % | Carbon % | Ca meq% | Mg meq% | K meq% | Na meq% | H meq% | ESP % | Gravel % | Coarse sand % | Fine sand % | Silt % | Clay % | LAT % |
0-10 | L | 5.6 | 0.07 | .008 | 0.153 | 2.01 | 2.0 | 1.3 | 0.3 | 0.2 | 6.9 | 2 | 2 | 26 | 45 | 14 | 11 | 1 |
10-22 | SL | 6.2 | 0.13 | .003 | 9 | 33 | 43 | 13 | 10 | <1 | ||||||||
22-48 | HC | 6.8 | 0.09 | .009 | 2.4 | 12.9 | 0.6 | 2.8 | 8.9 | 10 | 5 | 7 | 2 | 80 | 1 | |||
48-83 | HC | 6.6 | 0.30 | .043 | 3 | 4 | 2 | 84 | 1 | |||||||||
89-107 | HC | 5.8 | 0.43 | .066 | 14 | 14 | 6 | 62 | 1 | |||||||||
107-188 | SC | 6.6 | 0.24 | .029 | 29 | 22 | 11 | 33 | <1 |
Depth cm | Texture | pH | EC dS/m | Cl % | Nitrogen % | Carbon % | Gravel % | Coarse sand % | Fine sand % | Silt % | Clay % | LAT % |
0-10 | SL | 5.4 | 0.04 | .003 | 0.095 | 1.47 | 28 | 45 | 32 | 13 | 7 | 1 |
10-25 | GRS | 6.2 | 0.04 | .004 | 48 | 48 | 33 | 10 | 7 | <1 | ||
25-33 | HC | 6.5 | 0.26 | .033 | 14 | 11 | 11 | 7 | 66 | 1 | ||
56-63 | HC | 6.1 | 0.32 | .049 | 23 | 13 | 13 | 8 | 63 | 1 | ||
63-81 | GRC | 6.1 | 0.30 | .045 | 23 | 16 | 16 | 4 | 51 | 1 | ||
122-137 | S&GR | 6.2 | 0.12 | .014 | 32 | 24 | 24 | 8 | 18 | <1 |
Depth cm | Texture | pH | EC dS/m | Cl % | Nitrogen % | Carbon % | Gravel % | Coarse sand % | Fine sand % | Silt % | Clay % | LAT % |
0-13 | L | 5.9 | 0.06 | .005 | 0.118 | 2.02 | 34 | 36 | 16 | 10 | 1 | |
13-18 | L | 5.9 | 0.06 | .006 | 66 | 37 | 33 | 14 | 12 | 1 | ||
20-30 | HC | 6.6 | 0.14 | .014 | 1 | 16 | 15 | 8 | 55 | 2 | ||
30-71 | HC | 6.6 | 0.55 | .075 | 5 | 10 | 8 | 6 | 69 | 1 | ||
81-102 | GC | 5.9 | 0.61 | .073 | 42 | 27 | 14 | 6 | 50 | 1 |
Depth cm | Texture | pH | EC dS/m | Cl % | Nitrogen % | Carbon % | Ca meq% | Mg meq% | K meq% | Na meq% | H meq% | ESP % | Gravel % | Coarse sand % | Fine sand % | Silt % | Clay % |
0-10 | SL | 4.7 | 0.63 | .007 | 0.18 | 3.2 | 1.8 | 1.0 | 0.2 | 0.2 | 12.9 | 1 | 1 | 22 | 55 | 9 | 6 |
10-18 | SL | 4.6 | 0.64 | .007 | 0.08 | 2.3 | 0.2 | 0.6 | 0.5 | 0.5 | 20.7 | 2 | 1 | 24 | 53 | 12 | 7 |
30-40 | SL | 5.9 | 0.13 | .001 | 0.2 | 0.2 | 0.02 | 0.02 | 1.6 | 1 | 6 | 24 | 58 | 17 | 3 | ||
40-50 | SL | 6.2 | 1.10 | .011 | 0.2 | 2.6 | 0.9 | 0.9 | 2.8 | 13 | 7 | 20 | 51 | 16 | 13 | ||
50-60 | HC | ||||||||||||||||
60-90 | HC | 7.4 | 2.70 | .037 | 0.2 | 7.5 | 0.6 | 12.4 | 1.5 | 21 | 1 | ** | ** | ** | ** |
Stratford and Winnindoo (Sf:Wi) This map unit describes areas with at least 30% of either map unit. |