On 6/25/2013 8:06 AM, graham wrote:
> > wrote in message
> ...
>> On Mon, 24 Jun 2013 19:16:18 -0700 (PDT), Roy >
>> wrote:
>>
>>
>>>>
>>>>> We have a conservative PM from Alberta - he believes the Tar Sands are
>>>>
>>>>> clean.
>>>>
>>>>>
>>>>
>>>> He's never flown over ft. McMurray?
>>>>
>>>>
>>>>
>>>> http://o.canada.com/2013/05/10/timel...gle-timelapse/
>>>
>>> Its a wasteland...and there will be more of it as time goes on. How
>>> else can one get the oil out of the sand but in most cases...mine it.
>>
>> There is also this 'fracking' to get gas out of rock seams. Nobody
>> seems to be able to tell people who live in the areas where they want
>> to do it what will eventually happen to things like their well water
>> etc. No guarantees.
>>
> Most fracking is in rocks 1000s of feet down and way below the aquifers.
> There's so much false information and anecdotes with no basis in fact,
> mainly from environuts.
> Graham
>
>

Shale beds tend to be similar to confined acquifers - deep, and not
upwardly permeable.