A series of ancient river systems buried hundreds of metres below one of the most arid regions in Western Australia has been found by hydrogeologists.

A giant magnet towed by a helicopter was used to map the waterways, which have been discovered more than 200 metres below the surface.

Peak Warming Man said:

A series of ancient river systems buried hundreds of metres below one of the most arid regions in Western Australia has been found by hydrogeologists.

A giant magnet towed by a helicopter was used to map the waterways, which have been discovered more than 200 metres below the surface.

More … http://www.abc.net.au/news/2015-11-02/ancient-river-systems-boon-for-small-wa-towns/6903792

This acts sort of like a metal detector does it? If so, then the drier the terrain the deeper it can see.

“The helicopter flies very low at about 90 metres and the actual magnet itself flies about 60 metres above the ground. Basically we’re running the magnet over the earth and rather than getting a nice regular current you get a fluctuating current and it’s those fluctuations in current that vary depending on how well different parts of the ground are conducting electricity that we pick up and process and interpret. At the end of the project we intend to have a three-dimensional picture of these ancient buried river systems both where they are and how deep they are.”

By the way, apart from results from deep underground surveys of Mars and Antarctica, I haven’t heard of any other underground survey going anywhere near this deep. On TV last night, satellite mapping of underground Egypt failed at even 20 metres down.

This acts sort of like a metal detector does it?

—————————————————————————-

Yes. Called an Airborne Electromagnetic (EM) survey.

“Electromagnetic (EM) surveys can be used to help detect a wide variety of mineral deposits, especially base metal sulphides via detection of conductivity anomalies which can be generated around sulphide bodies in the subsurface. EM surveys are also used in diamond exploration (where the kimberlite pipes tend to have lower resistance than enclosing rocks), graphite exploration, palaeochannel-hosted uranium deposits (which are associated with shallow aquifers, which often respond to EM surveys in conductive overburden). These are indirect inferential methods of detecting mineralisation, as the commodity being sought is not directly conductive, or not sufficiently conductive to be measurable. EM surveys are also used in unexploded ordnance, archaeological, and geotechnical investigations.

Regional EM surveys are conducted via airborne methods, using either fixed-wing aircraft or helicopter-borne EM rigs. Surface EM methods are based mostly on Transient EM methods using surface loops with a surface receiver, or a downhole tool lowered into a borehole which transects a body of mineralisation. These methods can map out sulphide bodies within the earth in 3 dimensions, and provide information to geologists to direct further exploratory drilling on known mineralisation. Surface loop surveys are rarely used for regional exploration, however in some cases such surveys can be used with success (e.g.; SQUID surveys for nickel ore bodies).”

https://en.wikipedia.org/wiki/Exploration_geophysics

Looks like a huge dowsing device to me…

buffy said:

Looks like a huge dowsing device to me…

If I were to stop you right now….

Would it be ‘divine intervention’?…

stumpy_seahorse said:

buffy said:

Looks like a huge dowsing device to me…

If I were to stop you right now….

Would it be ‘divine intervention’?…

Dear oh dear.

stumpy_seahorse said:

buffy said:

Looks like a huge dowsing device to me…

If I were to stop you right now….

Would it be ‘divine intervention’?…

ay ay ay

buffy said:

Looks like a huge dowsing device to me…

Wash your mouth out!

Michael V said:

buffy said:

Looks like a huge dowsing device to me…

Wash your mouth out!

I consider it more realm of dark magic

Don’t know why you should think humans are completely insensitive to the environment. There is a blind man who can navigate his way around by echolocation. Perhaps if we had more open minds we might find we could do other things that we curently think as impossible.

Some men see things as they are and ask why.
I dream things that never were and ask why not.

PermeateFree said:

Don’t know why you should think humans are completely insensitive to the environment.

Is there anyone who thinks humans are completely insensitive to the environment?

Human senses are a widely known phenomenon.

Peak Warming Man said:

Some men see things as they are and ask why.
I dream things that never were and ask why not.

people don’t like that kind of thinking

dv said:

PermeateFree said:

Don’t know why you should think humans are completely insensitive to the environment.

Is there anyone who thinks humans are completely insensitive to the environment?

Human senses are a widely known phenomenon.

Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said:

dv said:

PermeateFree said:

Don’t know why you should think humans are completely insensitive to the environment.

Is there anyone who thinks humans are completely insensitive to the environment?

Human senses are a widely known phenomenon.

Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

So you disagree with your previous statement, above.

dv said:

PermeateFree said:

dv said:

Is there anyone who thinks humans are completely insensitive to the environment?

Human senses are a widely known phenomenon.

Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

So you disagree with your previous statement, above.

Appears perfectly in agreement to me.

PermeateFree said: Don’t know why you should think humans are completely insensitive to the environment.

PermeateFree said: Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said: Appears perfectly in agreement to me.

The first two statements are completely mutually opposed.

Peak Warming Man said:

Some men see things as they are and ask why.
I dream things that never were and ask why not.

And some people don’t see those two as being mutually exclusive (in fact you can’t do 1 effectively without doing 2).

The Rev Dodgson said:

Peak Warming Man said:

Some men see things as they are and ask why.
I dream things that never were and ask why not.

And some people don’t see those two as being mutually exclusive (in fact you can’t do 1 effectively without doing 2).

some men see things and ignore them

dv said:

PermeateFree said: Don’t know why you should think humans are completely insensitive to the environment.

PermeateFree said: Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said: Appears perfectly in agreement to me.

The first two statements are completely mutually opposed.

It is a pity you don’t quote my posts in full, as you would see no conflict, except in your own mind.

>Don’t know why you should think humans are completely insensitive to the environment. There is a blind man who can navigate his way around by echolocation. Perhaps if we had more open minds we might find we could do other things that we currently think as impossible.<

>>Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.<<

buffy said:

Looks like a huge dowsing device to me…

Possibly because that’s just what it is.

Unlike smaller hand operated dowsing devices though, I imagine that they have some good evidence that this one works.

PermeateFree said:

dv said:

PermeateFree said: Don’t know why you should think humans are completely insensitive to the environment.

PermeateFree said: Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said: Appears perfectly in agreement to me.

The first two statements are completely mutually opposed.

It is a pity you don’t quote my posts in full, as you would see no conflict, except in your own mind.

>Don’t know why you should think humans are completely insensitive to the environment. There is a blind man who can navigate his way around by echolocation. Perhaps if we had more open minds we might find we could do other things that we currently think as impossible.<

>>Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.<<

That extra information actually doesn’t change the contradiction at all. It provides a bit more colour but you are still putting forward two counterposed positions.

dv said:

PermeateFree said:

dv said:

PermeateFree said: Don’t know why you should think humans are completely insensitive to the environment.

PermeateFree said: Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said: Appears perfectly in agreement to me.

The first two statements are completely mutually opposed.

It is a pity you don’t quote my posts in full, as you would see no conflict, except in your own mind.

>Don’t know why you should think humans are completely insensitive to the environment. There is a blind man who can navigate his way around by echolocation. Perhaps if we had more open minds we might find we could do other things that we currently think as impossible.<

>>Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.<<

That extra information actually doesn’t change the contradiction at all. It provides a bit more colour but you are still putting forward two counterposed positions.

I can’t be held responsible for your insensitivity if it is beyound your comprehension.

buffy said:

Looks like a huge dowsing device to me…

come in PF

LOL

dv said:

PermeateFree said: Don’t know why you should think humans are completely insensitive to the environment.

PermeateFree said: Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said: Appears perfectly in agreement to me.

The first two statements are completely mutually opposed.

I have to say it -

well done dv

The_observer said:

dv said:

PermeateFree said: Don’t know why you should think humans are completely insensitive to the environment.

PermeateFree said: Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said: Appears perfectly in agreement to me.

The first two statements are completely mutually opposed.

I have to say it -

well done dv

You tend to get a bit carried away Observer.

PermeateFree said:

The_observer said:

dv said:

PermeateFree said: Don’t know why you should think humans are completely insensitive to the environment.

PermeateFree said: Going on the environmental destruction we have levied on this planet in order to improve our standard of living, I would say we are highly insensitive to what is happening around us.

PermeateFree said: Appears perfectly in agreement to me.

The first two statements are completely mutually opposed.

I have to say it -

well done dv

You tend to get a bit carried away Observer.

PF

The_observer said:

PermeateFree said:

The_observer said:

I have to say it -

well done dv

You tend to get a bit carried away Observer.

PF

Beauty.

I’m going to buy up a large chunk of desert and build a city of 2 million.

party_pants said:

Beauty.

I’m going to buy up a large chunk of desert and build a city of 2 million.

Doesn’t sound like a good investment.

roughbarked said:

party_pants said:

Beauty.

I’m going to buy up a large chunk of desert and build a city of 2 million.

Doesn’t sound like a good investment.

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

party_pants said:

roughbarked said:

party_pants said:

Beauty.

I’m going to buy up a large chunk of desert and build a city of 2 million.

Doesn’t sound like a good investment.

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

Pull the carpet from under them eh?

party_pants said:

Beauty.

I’m going to buy up a large chunk of desert and build a city of 2 million.

2 million anthills?

party_pants said:

roughbarked said:

party_pants said:

Beauty.

I’m going to buy up a large chunk of desert and build a city of 2 million.

Doesn’t sound like a good investment.

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

you’ll need to bribe the councillors and a few managers in council first

I doubt they will ever understand that a reliable water supply to the dry farming areas creates a stable farming environment which leads to dollars being made

imagine if they had spent the billion dollars on seasprite and used it to build a well built pipeline bringing water to farming areas

(I don’t like the canals system they like to use – its half arsed and suffers ongoing problems with stuff fouling the water ways)

you build a pipeline big enough to drive a truck through

wookiemeister said:

I doubt they will ever understand that a reliable water supply to the dry farming areas creates a stable farming environment which leads to dollars being made

imagine if they had spent the billion dollars on seasprite and used it to build a well built pipeline bringing water to farming areas

(I don’t like the canals system they like to use – its half arsed and suffers ongoing problems with stuff fouling the water ways)

you build a pipeline big enough to drive a truck through

Madness is looking for hairs to count on the palms of your hands.

roughbarked said:

wookiemeister said:

I doubt they will ever understand that a reliable water supply to the dry farming areas creates a stable farming environment which leads to dollars being made

imagine if they had spent the billion dollars on seasprite and used it to build a well built pipeline bringing water to farming areas

(I don’t like the canals system they like to use – its half arsed and suffers ongoing problems with stuff fouling the water ways)

you build a pipeline big enough to drive a truck through

Madness is looking for hairs to count on the palms of your hands.

beware the full moon roughie

wookiemeister said:

party_pants said:

roughbarked said:

Doesn’t sound like a good investment.

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

you’ll need to bribe the councillors and a few managers in council first

Sounds like a good scam wookie,I will be in on it if you invest as well. After all, sounds like management gear fleecing stupid people. Should be breeze for a fellow like you, always a step ahead of the flock and savvy to the ins and outs and tricks that afflict the sheeple. We will make out like bandits.

wookiemeister said:

roughbarked said:

wookiemeister said:

I doubt they will ever understand that a reliable water supply to the dry farming areas creates a stable farming environment which leads to dollars being made

imagine if they had spent the billion dollars on seasprite and used it to build a well built pipeline bringing water to farming areas

(I don’t like the canals system they like to use – its half arsed and suffers ongoing problems with stuff fouling the water ways)

you build a pipeline big enough to drive a truck through

Madness is looking for hairs to count on the palms of your hands.

beware the full moon roughie

I’m awaiting your description of the pump that is going to push this volume of water about.

AwesomeO said:

wookiemeister said:

party_pants said:

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

you’ll need to bribe the councillors and a few managers in council first

Sounds like a good scam wookie,I will be in on it if you invest as well. After all, sounds like management gear fleecing stupid people. Should be breeze for a fellow like you, always a step ahead of the flock and savvy to the ins and outs and tricks that afflict the sheeple. We will make out like bandits.

you need connections curve – always connections, I don’t have those connections

roughbarked said:

wookiemeister said:

roughbarked said:

Madness is looking for hairs to count on the palms of your hands.

beware the full moon roughie

I’m awaiting your description of the pump that is going to push this volume of water about.

you would be amazed how big they can make pumps

you could always have a large water tower that is being filled by a few large pumps and use water pressure to then push water down the pipe

wookiemeister said:

party_pants said:

roughbarked said:

Doesn’t sound like a good investment.

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

you’ll need to bribe the councillors and a few managers in council first

You’re a rank amatuer at this Wookie. I intend to bribe the state government to decalre my patch of desert it;s own LGA. Then I will set up the by-laws to have the mayor serve a 10 year term. Then I as the only ratepayer will elect myself to a 10 year term. .. before I even get started on turning one sod of earth.

once the rot sets in it accelerates , the developers with the councillors in the pocket go on a bender putting up hundreds of thousands of crappy old houses and let the public work out how to maintain it all

party_pants said:

wookiemeister said:

party_pants said:

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

you’ll need to bribe the councillors and a few managers in council first

You’re a rank amatuer at this Wookie. I intend to bribe the state government to decalre my patch of desert it;s own LGA. Then I will set up the by-laws to have the mayor serve a 10 year term. Then I as the only ratepayer will elect myself to a 10 year term. .. before I even get started on turning one sod of earth.

the law is backed up with a man with a gun, try setting up another state without giving the right people money and see how you go

party_pants said:

wookiemeister said:

party_pants said:

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

you’ll need to bribe the councillors and a few managers in council first

You’re a rank amatuer at this Wookie. I intend to bribe the state government to decalre my patch of desert it;s own LGA. Then I will set up the by-laws to have the mayor serve a 10 year term. Then I as the only ratepayer will elect myself to a 10 year term. .. before I even get started on turning one sod of earth.

the law is backed up with a man with a gun, try setting up another state without giving the right people money and see how you go

wookiemeister said:

party_pants said:

wookiemeister said:

you’ll need to bribe the councillors and a few managers in council first

You’re a rank amatuer at this Wookie. I intend to bribe the state government to decalre my patch of desert it;s own LGA. Then I will set up the by-laws to have the mayor serve a 10 year term. Then I as the only ratepayer will elect myself to a 10 year term. .. before I even get started on turning one sod of earth.

the law is backed up with a man with a gun, try setting up another state without giving the right people money and see how you go

you’d need to bribe federal by promising them that you’ll pay them tribute every year, a few maidens that you can give them to feed to the minotaur

party_pants said:

wookiemeister said:

party_pants said:

It will be marvellous. I will make shit loads by sub-dividing and selling lots, before the water runs dry and the whole thing collapses.

you’ll need to bribe the councillors and a few managers in council first

You’re a rank amatuer at this Wookie. I intend to bribe the state government to decalre my patch of desert it;s own LGA. Then I will set up the by-laws to have the mayor serve a 10 year term. Then I as the only ratepayer will elect myself to a 10 year term. .. before I even get started on turning one sod of earth.

Clearly, you’ve been thinking on this a while?

wookiemeister said:

party_pants said:

wookiemeister said:

you’ll need to bribe the councillors and a few managers in council first

You’re a rank amatuer at this Wookie. I intend to bribe the state government to decalre my patch of desert it;s own LGA. Then I will set up the by-laws to have the mayor serve a 10 year term. Then I as the only ratepayer will elect myself to a 10 year term. .. before I even get started on turning one sod of earth.

the law is backed up with a man with a gun, try setting up another state without giving the right people money and see how you go

Go to SpecSavers,
Go directly to SpecSavers,
Do not pass GO!
Do not collect $200.

When you get back, read my previous post again.

party_pants said:

wookiemeister said:

party_pants said:

You’re a rank amatuer at this Wookie. I intend to bribe the state government to decalre my patch of desert it;s own LGA. Then I will set up the by-laws to have the mayor serve a 10 year term. Then I as the only ratepayer will elect myself to a 10 year term. .. before I even get started on turning one sod of earth.

the law is backed up with a man with a gun, try setting up another state without giving the right people money and see how you go

Go to SpecSavers,
Go directly to SpecSavers,
Do not pass GO!
Do not collect $200.

When you get back, read my previous post again.

I quantified with the next post you’d need to bribe federal as well

obeid fell foul trying to bribe his way into a coal mine – good luck with another country

wookiemeister said:

party_pants said:

wookiemeister said:

the law is backed up with a man with a gun, try setting up another state without giving the right people money and see how you go

Go to SpecSavers,
Go directly to SpecSavers,
Do not pass GO!
Do not collect $200.

When you get back, read my previous post again.

I quantified with the next post you’d need to bribe federal as well

obeid fell foul trying to bribe his way into a coal mine – good luck with another country

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

Michael V said:

wookiemeister said:

party_pants said:

Go to SpecSavers,
Go directly to SpecSavers,
Do not pass GO!
Do not collect $200.

When you get back, read my previous post again.

I quantified with the next post you’d need to bribe federal as well

obeid fell foul trying to bribe his way into a coal mine – good luck with another country

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

we are young and free.. what’s the next verse again?

Michael V said:

wookiemeister said:

party_pants said:

Go to SpecSavers,
Go directly to SpecSavers,
Do not pass GO!
Do not collect $200.

When you get back, read my previous post again.

I quantified with the next post you’d need to bribe federal as well

obeid fell foul trying to bribe his way into a coal mine – good luck with another country

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

he was caught because he didn’t bribe the right people, its what happens when you cheap on the bribes as well

its a shame there no nationalised coal mine that can make all that lovely to pay the national debt off

roughbarked said:

Michael V said:

wookiemeister said:

I quantified with the next post you’d need to bribe federal as well

obeid fell foul trying to bribe his way into a coal mine – good luck with another country

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

we are young and free.. what’s the next verse again?

we be like bad arse mofos checkin on our stock portfolios – heeeeeeey ohhhhh

word

anyway, I’m going to bed, To plot and scheme further.

wookiemeister said:

Michael V said:

wookiemeister said:

I quantified with the next post you’d need to bribe federal as well

obeid fell foul trying to bribe his way into a coal mine – good luck with another country

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

he was caught because he didn’t bribe the right people, its what happens when you cheap on the bribes as well

its a shame there no nationalised coal mine that can make all that lovely to pay the national debt off

He got caught because this is Australia and there are only so many people you can bugger over.

party_pants said:

anyway, I’m going to bed, To plot and scheme further.

:) tuning in on your negative ion generator.

roughbarked said:

Michael V said:

wookiemeister said:

I quantified with the next post you’d need to bribe federal as well

obeid fell foul trying to bribe his way into a coal mine – good luck with another country

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

we are young and free.. what’s the next verse again?

NFI.

I didn’t follow that part of the Olympics.

party_pants said:

anyway, I’m going to bed, To plot and scheme further.

snap

wookiemeister said:

roughbarked said:

Michael V said:

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

we are young and free.. what’s the next verse again?

we be like bad arse mofos checkin on our stock portfolios – heeeeeeey ohhhhh

word

I’d be more worried about which5 other countries.

Michael V said:

roughbarked said:

Michael V said:

Isn’t that good, that Obied was discovered? In most5 other countries, he wouldn’t‘ve been. I like Australia. Perhaps I should sing the National Anthem. Yes, I should.

sings “Australians let us rejoice for…”

we are young and free.. what’s the next verse again?

NFI.

I didn’t follow that part of the Olympics.

Oh., you have me in stitches. I did enjoy that quip.

roughbarked said:

wookiemeister said:

roughbarked said:

we are young and free.. what’s the next verse again?

we be like bad arse mofos checkin on our stock portfolios – heeeeeeey ohhhhh

word

I’d be more worried about which5 other countries.

Typo.

roughbarked said:

Michael V said:

roughbarked said:

we are young and free.. what’s the next verse again?

NFI.

I didn’t follow that part of the Olympics.

Oh., you have me in stitches. I did enjoy that quip.

:)

Michael V said:

roughbarked said:

wookiemeister said:

we be like bad arse mofos checkin on our stock portfolios – heeeeeeey ohhhhh

word

I’d be more worried about which5 other countries.

Typo.

Knew that but it is a quiet night and thought I’d run with it.

roughbarked said:

Michael V said:

roughbarked said:

I’d be more worried about which5 other countries.

Typo.

Knew that but it is a quiet night and thought I’d run with it.

:)

Michael V said:

roughbarked said:

Michael V said:

Typo.

Knew that but it is a quiet night and thought I’d run with it.

:)

So, all will be well when you get this manifold finished?

roughbarked said:

Michael V said:

roughbarked said:

Knew that but it is a quiet night and thought I’d run with it.

:)

So, all will be well when you get this manifold finished?

Presumably it is your underground river system we are talking about.

roughbarked said:

Michael V said:

roughbarked said:

Knew that but it is a quiet night and thought I’d run with it.

:)

So, all will be well when you get this manifold finished?

Hopefully.

It’s been a struggle. Problems on problems and order of applying solutions. And I am used to geologic scalen(size, time) and dynamics, not millimetre accuracy.

The old turtle thing: slow and steady…

Michael V said:

roughbarked said:

Michael V said:

:)

So, all will be well when you get this manifold finished?

Hopefully.

It’s been a struggle. Problems on problems and order of applying solutions. And I am used to geologic scalen(size, time) and dynamics, not millimetre accuracy.

The old turtle thing: slow and steady…

In thousandths of millimetres, you still need the slow and steady.

roughbarked said:

roughbarked said:

Michael V said:

:)

So, all will be well when you get this manifold finished?

Presumably it is your underground river system we are talking about.

Yair, well, taking an above-ground sheet-wash (and consequent erosion – that I’m not worried about, but looks ugly for sale) into an underground river-system disposal…

Michael V said:

roughbarked said:

roughbarked said:

So, all will be well when you get this manifold finished?

Presumably it is your underground river system we are talking about.

Yair, well, taking an above-ground sheet-wash (and consequent erosion – that I’m not worried about, but looks ugly for sale) into an underground river-system disposal…

As always, sounds easier than it looks but you at least know the geology.

roughbarked said:

Michael V said:

roughbarked said:

So, all will be well when you get this manifold finished?

Hopefully.

It’s been a struggle. Problems on problems and order of applying solutions. And I am used to geologic scalen(size, time) and dynamics, not millimetre accuracy.

The old turtle thing: slow and steady…

In thousandths of millimetres, you still need the slow and steady.

That, I like (and can deal with – well, at least, hundredths of a millimetre anyway). I am still learning with this – if it doesn’t fit, bend the pipe…

Michael V said:

This acts sort of like a metal detector does it?

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Yes. Called an Airborne Electromagnetic (EM) survey.

“Electromagnetic (EM) surveys can be used to help detect a wide variety of mineral deposits, especially base metal sulphides via detection of conductivity anomalies which can be generated around sulphide bodies in the subsurface. EM surveys are also used in diamond exploration (where the kimberlite pipes tend to have lower resistance than enclosing rocks), graphite exploration, palaeochannel-hosted uranium deposits (which are associated with shallow aquifers, which often respond to EM surveys in conductive overburden). These are indirect inferential methods of detecting mineralisation, as the commodity being sought is not directly conductive, or not sufficiently conductive to be measurable. EM surveys are also used in unexploded ordnance, archaeological, and geotechnical investigations.

Regional EM surveys are conducted via airborne methods, using either fixed-wing aircraft or helicopter-borne EM rigs. Surface EM methods are based mostly on Transient EM methods using surface loops with a surface receiver, or a downhole tool lowered into a borehole which transects a body of mineralisation. These methods can map out sulphide bodies within the earth in 3 dimensions, and provide information to geologists to direct further exploratory drilling on known mineralisation. Surface loop surveys are rarely used for regional exploration, however in some cases such surveys can be used with success (e.g.; SQUID surveys for nickel ore bodies).”

https://en.wikipedia.org/wiki/Exploration_geophysics

Thank you Michael V.