Tim,
You make a very generous offer indeed.
What do you mean by "garnet core isopleth intersections" ? What
assemblages are you tying to the garnet core compositions? What grade
rocks are you investigating? And finally, what is FIA?
eric
On May 25, 2005, at 11:13 PM, Tim Bell wrote:
> Hi All
> I rather tentatively suggested a strongly
> microstructural/metamorphic oriented session as part a
> structural/economic
> conference being held in Townsville, Queensland, Australia from August
> 29th
> to September 2nd, 2005, mainly because of the interests of and work
> being
> done by my own research group in the Appalachians and Australia. With
> the
> deadline for the submission of abstracts being yesterday, the response
> has
> been far more positive than I had expected and we are going to have a
> great
> time. The number of abstracts offered for the whole conference is so
> large
> that the organizers have decided to run parallel sessions. This has
> opened
> an opportunity for some sessions to be larger. So I approached the
> organizers and they have given me the opportunity of advertising this
> session to metamorphic types the world over. They have given me a
> deadline
> of Friday June 3 for any one wishing to send abstracts and/or register
> for
> the conference at the pre deadline fees.
> My research group has been on the trail of linking structural
> and
> metamorphic processes for years but publications on this topic have
> only
> just begun to surface. Using garnet core isopleth intersections and
> THERMOCALC we have found some unusual relationships between P-T-t paths
> versus what one could infer were PT changes from core to median for
> just one
> phase of porphyroblast growth (via Evans 2004). These indicate
> processes
> taking place that have not been discussed in the literature and which
> we are
> quite intrigued by. We have also been doing core isopleth
> intersections for
> several samples where we have FIA control indicating that they have
> the same
> timing and getting results that suggest THERMOCALC is not accurate. I
> find
> it strange that the degree of variation that we observe has not been
> reported in the literature. Perhaps being able to rationalize anomalous
> results away as a result of the material not being in equilibrium is
> such an
> easy way out that it is preventing one from seeing the forest for the
> trees.
> Furthermore, when we try the Gibbs method versus the isopleth
> approach, we
> find no relationship at all between the results! These things need to
> be
> stated and discussed and I would like to have us devote a discussion
> session
> or three to these problems.
> Townsville lies in the tropics at latitude 19° and the climate
> during our dry season, when the conference is being held, is truly
> glorious.
> You should plan to come and stay on afterwards and have a look at the
> Great
> Barrier reef and the Atherton Tablelands (the latter is in what we
> call the
> wet tropics, rainforest, tree kangaroos, platypus). I have a very, very
> large empty house on Lake Tinaroo on several hectares, close to Lake
> Eacham
> (a glorious Maar Lake surrounded by rainforest in a national park) on
> the
> Atherton Tablelands. Anyone attending the conference is welcome to use
> it as
> a base to explore the beautiful Cairns – Atherton tablelands region
> for the
> week after the conference, look at platypi, and catch red claw to eat
> (the
> most delicious fresh water lobster there is). You simply need a
> sleeping bag
> and an airmattress. Cairns is the international airport for NQld and
> lies
> just 60kms away down the mountain.
> The web site to visit to find out how to send the abstract and
> register is
> http://www.es.jcu.edu.au/STOMP/
> Cheers
> Tim
>
> Prof. T.H. Bell
> School Earth Sciences
> James Cook University
> Townsville
> Qld 4811
> Australia
> Work Phone +61-7-47814766
> Work Fax +61-7-47251501
> Home Phone+61-7-47732534
> Email [log in to unmask]
> http://www.es.jcu.edu.au/dept/Earth/research/samri/index.html
>
>
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