User:Gazjo/sandbox and Talk:Chet Blaylock: Difference between pages

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Revision as of 00:54, 18 July 2007

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{{WPBiography

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=Yarragadee Aquifer=

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The '''Yarragadee Aquifer''' is a significant freshwater [[aquifer]] located in the south west of [[Western Australia]] and predominately beneath the coastal plain west of the [[Darling Scarp]]. It has a north-south range from about [[Geraldton, Western Australia|Geraldton]] to the south coast, but with a split in the formation south of [[Perth, Western Australia|Perth]].

|listas=Blaylock, Chet

The aquifer is quite deep, situated hundreds of metres below ground level and with a thickness ranging up to about two kilometres.

In the Perth area, the Yarragadee Aquifer is located beneath the Leederville Aquifer, which itself is located beneath two superficial aquifers known as the [[Gnangara Mound]] and Jandakot Mound. These aquifers are separated by impervious layers with no groundwater called [[aquitard]]s.

The Yarragadee Aquifer stores about 1000 cubic kilometres of water, compared to about 20 cubic kilometres in the Gnangara Mound. As such it is seen as a potential source of water, and the [[Water Corporation]] is intending to extract 45 [[Litre|gigalitres]] per year from this aquifer by late 2009. Currently about 60xx GL per year is extracted from the Gnangara Mound.

Ultimately the Yaragadee Aquifer is replenished by rainfall. This recharging is usually where there are outcroppings near other aquifers like the Leederville Aquifer. There are also outcrops near the surface in the vicinity of the [[Blackwood River]]. Current models estimate this recharge at about 280 to 340 GL per year. This groundwater can remain in the aquifer for many years; in some areas the age of the groundwater is over 30,000 years.

Geologically, the aquifer is part of the Yarragadee Formation which is a relatively thick geological unit in the [[Perth Basin]]. Formed during the [[Jurassic]] Period, the Yarragadee Formation is composed primarily of non-marine fluviatile feldspathic, poorly sorted sandstones which are porous and poorly cemented, hence allowing for considerable groundwater reserves. It grades from a shale-siltstone dominated base to a cleaner sandstone in the upper portions of the formation, probably representing increased subsidence or filling of the basin during the late Jurassic.

==References==

* {{cite web | url = http://www.viacorp.com/perth_water.htm | title = The Water Supply in Perth, Australia | accessdate = 2007-04-10}}

* {{cite web | url = http://www.watercorporation.com.au/S/sw_yarragadee.cfm?uid=4415-5769-1319-1270 | title = Yarragadee | accessdate = 2007-04-10}}

* {{cite web | url = http://www.watercorporation.com.au/_files/SW_Yarragadee_SWAMS.pdf | title = Yarragadee | accessdate = 2007-04-10}}

* {{cite web | url = http://www.nacc.com.au/calci/Downloads/Stage%20One%20Report%20-%20Section%204.pdf | title = Yarragadee Aquifer Geology report, 115kb pdf | accessdate = 2007-04-10}}

==External links==

{{Mapit-AUS-suburbscale|long=115.79|lat=-31.94}}

<br>

*''Testing for Great central Road, Connie Sue Highway:''

{{Infobox Outback Track

| Name = Great Central Road

|image=

|caption=

| From = [[Laverton, Western Australia|Laverton]] <small>({{coor dm|28|37|S|122|24|E|region:AU-WA_type:city}})</small>

| To = [[Yulara, Northern Territory|Yulara]] <small>({{coor dm|25|14|S|130|59|E|region:AU-NT_type:city}})</small>

| Length = 1126 [[kilometre|km]]

| State = [[Western Australia]], [[Northern Territory]]

| Region =

| Permit = 2 required

| Fuel = [[Laverton, Western Australia|Laverton]] <small>({{coor dm|28|37|S|122|24|E|region:AU-WA_type:city}})</small>, Cosmo Newberry, Tjukayirla Roadhouse, [[Warburton, Western Australia|Warburton]] <small>({{coor dm|26|13|S|126|39|E|region:AU-WA_type:city}})</small>, Warakurna Roadhouse, Docker River and [[Yulara, Northern Territory|Yulara]] <small>({{coor dm|25|14|S|130|59|E|region:AU-NT_type:city}})</small>

| Facilities =

}}

{{WikiProject Montana|class=start}}

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<br>

{{Infobox Outback Track

| Name = Connie Sue Highway

|image=

|caption=

| From = [[Warburton, Western Australia|Warburton]] <small>({{coor dm|26|13|S|126|39|E|region:AU-WA_type:city}})</small>

| To = [[Rawlinna, Western Australia|Rawlinna]] <small>({{coor dm|30|46|S|125|26|E|region:AU-SA_type:city}})</small>

| Length = 650 [[kilometre|km]]

| State = [[Western Australia]]

| Region =

| Permit = 1 required for Warburton

| Fuel = [[Warburton, Western Australia|Warburton]] <small>({{coor dm|26|13|S|126|39|E|region:AU-WA_type:city}})</small>

| Facilities = [[Warburton, Western Australia|Warburton]] <small>({{coor dm|26|13|S|126|39|E|region:AU-WA_type:city}})</small>

}}

<br>

Be aware there is no fuel for sale at Rawlinna. The closest fuel available to Rawlinna is at Caiguna (?check) 100km to the south on the Eyre Highway.

The Highway intersects with another outback road, the Anne Beadell Highway at Neale Junction. Anne was Connie Sue's mother.

<P>

{{Infobox Outback Track

| Name = Gunbarrel Highway

|image=

|caption=

| From = [[Wiluna, Western Australia|Wiluna]] <small>({{coor dm|26|36|S|120|14|E|region:AU-WA_type:city}})</small>

| To = [[Yulara, Northern Territory|Yulara]] <small>({{coor dm|25|14|S|130|59|E|region:AU-SA_type:city}})</small>

| Length = 1400 [[kilometre|km]]

| State = [[Western Australia]], [[Northern Territory]]

| Region =

| Permit = 2 required

| Fuel = [[Wiluna, Western Australia|Wiluna]] <small>({{coor dm|26|36|S|120|14|E|region:AU-WA_type:city}})</small>, Carnegie, [[Warburton, Western Australia|Warburton]] <small>({{coor dm|26|13|S|126|39|E|region:AU-WA_type:city}})</small>, Warakurna Roadhouse and [[Yulara, Northern Territory|Yulara]] <small>({{coor dm|25|14|S|130|59|E|region:AU-SA_type:city}})</small>

| Facilities =

}}