Zoe
     Or just use "Stress controls on faulting, fracturing, intrusion  
and injection in the Earth's crust".  Much more succinct and it avoids  
unnecessary and unintended connections.  Is it necessary to  
distinguish melts from magmas in a title?  The title has magmas ...  
and other sediments, a strange combination in a single phrase.  Are  
any salt diapirs sedimentary?  I don't think so.
cheers,
eric
On Nov 26, 2009, at 10:45 AM, Zoe Shipton wrote:

> We could always change the title of the conference to "Stress  
> controls on faulting, fracturing and intrusion/injection of magmas,  
> melts, salt and other sediments in the Earth's crust" but it'd be a  
> bit cumbersome.
>
> It's been fascinating hearing about the enormous variety in  
> intrusion/injection types, and we'd welcome abstracts on any of  
> these topics. The theme of the conference is stress, and I imagine  
> there's a whole lots of interesting data out there related to stress  
> driving or influencing "non-igneous" intrusions.
>
> Look forward to reading your abstracts in April...!
>
> Zoe
>
> Alan Gibbs wrote:
>> For those of you who may have missed these things have a look at: http://pgc.lyellcollection.org/content/6/133.abstract
>> More if you google "clastic injectites" which will give you some  
>> insight
>> into how big and potentially interesting these things are.  
>> Injectite or intrusion folks? alan
>> -----Original Message-----
>> From: Tectonics & structural geology discussion list
>> [mailto:[log in to unmask]] On Behalf Of Jackson,  
>> Christopher A -
>> L
>> Sent: 26 November 2009 15:14
>> To: [log in to unmask]
>> Subject: Re: Anderson Stress Meeting: September 2010 reminder
>> Hi All,
>> Seems like we are straying into a discussion about 'forcibly- 
>> intruded'
>> clastic dykes (typically injected upwards) vs. 'passively-emplaced'  
>> clastic
>> dykes which fill in long-lived, open fractures (i.e. ones forming in
>> metamorphic basement as Bob describes below). This is OK, as long  
>> as we are
>> al clear on what we are talking about.
>> Chris
>> P.S. Bob: I'll have one of the JSG pre-prints if you don't mind!
>> ---------------------------------------------------------------
>> Dr Christopher A-L Jackson
>> Statoil Senior Lecturer in Basin Analysis Department of Earth  
>> Science &
>> Engineering Imperial College Prince Consort Road London
>> SW7 2BP
>> ENGLAND
>> email:  [log in to unmask]
>> web:    www.imperial.ac.uk/people/c.jackson
>> phone: +44(0)2075947450
>> -----Original Message-----
>> From: Tectonics & structural geology discussion list
>> [mailto:[log in to unmask]] On Behalf Of HOLDSWORTH R.E.
>> Sent: 26 November 2009 14:35
>> To: [log in to unmask]
>> Subject: Re: Anderson Stress Meeting: September 2010 reminder
>> Christine and all,
>> We here at Durham have had some interest in clastic infills in  
>> crystalline
>> rocks - including ones that have been injected. For example, try  
>> Beacom et
>> al. 1999 for examples within the Lewisian Gneisses:
>> Beacom, L.E., Anderson, T.B. & Holdsworth, R.E. 1999. Using  
>> basement hosted
>> clastic dykes as syn-rifting palaeostress indicators: an example  
>> from the
>> basal Stoer Group, Scotland. Geol. Mag. 136, 301-310.
>> I'll send you - and anyone else who want one - a reprint separately.
>> More recently, Rich Walker who has just submitted his PhD here has  
>> found
>> similar features in Tertiary basalts in the Faroe Islands and is  
>> about to
>> start a post doc studying equivalent features for a further 2.5  
>> years funded
>> by a major oil company (contract pending, so i'll refrain from naming
>> names). If you want I can send a pre-print of a paper we are about  
>> to submit
>> to JSG on these, though they are mostly sediment fills with only  
>> minor
>> injectites. He will be presenting some of his work as a poster at  
>> AGU if you
>> want to come and find him or me.
>> Finally, we also have two PhD students funded by a consortium of  
>> companies
>> associated with the Clair field, west of Shetland who are studying  
>> fracture
>> systems in the crystalline basement of the Lewisian Complex of NW  
>> Scotland
>> (Jen Martin, Ben Franklin). Many of these fracture systems are  
>> associated
>> with clastic fills and/or injectites.
>> Jen will also be presenting some of her work as a poster at AGU. The
>> companies are interested in this work as a substantial volume of  
>> oil is
>> hosted in fractured basement in the Clair Field.
>> Fianlly, you might also want to seek out these possibly related  
>> papers:
>> Richter, D. 1966. On the New Red Sandstone Neptunian Dykes of the  
>> Tor Bay
>> Area (Devonshire). Proceedings of the Geological Association, 77,
>> 173-186
>> Wright, V., Woodcock, N.H., Dickson, J.A.D. 2009. Fissure fills along
>> faults: Variscan examples from Gower, South Wales. Geological  
>> Magazine,
>> Cambridge
>> Best wishes
>> Best wishes
>> Bob Holdsworth
>> Prof Bob Holdsworth,
>> NERC KE Fellow,
>> Reactivation Research Group,
>> Dept of Earth Sciences,
>> University of Durham,
>> Durham DH1 3LE,
>> UK
>> Tel +44(0)1913342299
>> Fax +44(0)1913342301
>> e-mail (including jsg business): [log in to unmask]
>> Web: Dept: http://www.dur.ac.uk/earth.sciences
>> RRG - http://www.dur.ac.uk/react.res/RRG_web
>> Geospatial Research Ltd (GRL) - www.geospatial-research.com
>> -----Original Message-----
>> From: Tectonics & structural geology discussion list
>> [mailto:[log in to unmask]] On Behalf Of Christine Siddoway
>> Sent: 26 November 2009 13:39
>> To: [log in to unmask]
>> Subject: Re: Anderson Stress Meeting: September 2010 reminder
>> Importance: High
>> Greetings, Carl and others,
>> AMS on sandstone intrusions:  Mike Petronis and I have an  
>> investigation
>> underway of sandstone dikes within crystalline rock in the Front  
>> Range of
>> Colorado. Our recent abstract with initial results is at:
>> http://aapg09.mapyourshow.com/2_1/sessions/session.cfm?ScheduledSessionI
>> D=15
>> 32.  The scale of the intrusions, incidentally, is 5 cm to >7  
>> meters, with
>> many exceeding 2 m in width.
>> I'd like to now ask, can any list members tell me of other examples  
>> of
>> clastic dikes within a crystalline host?  My web searches yield  
>> little!
>> Regards,
>> Christine Siddoway
>> On 11/26/09 4:24 AM, "Carl Stevenson" <[log in to unmask]>  
>> wrote:
>>> Hi all,
>>>
>>> Sedimentary intrusions - does anyone know of any AMS (anisotropy of
>> magnetic
>>> susceptibility) work on these?
>>>
>>> Desperately resisting getting drawn in to a semantic debate, I think
>> 'igneous
>>> intrusion' is fine. I guess it is as opposed to igneous extrusion -
>> lavas and
>>> ash etc. Sometimes in when subvolcanic roots are exposed it is
>> actually
>>> equivocal. There are instances when ash can fall back into a vent.
>>>
>>> An example I am aware of is:
>>> ALMOND, D. C. 1977. Sabaloka Igneous Complex, Sudan. Philosophical  
>>> Transactions of the Royal Society of London Series a - Mathematical
>> Physical
>>> and Engineering Sciences, 287, 595-633.
>>>
>>> Cheers
>>> Carl
>>>
>>> -----Original Message-----
>>> From: Tectonics & structural geology discussion list [mailto:[log in to unmask] 
>>> ] On Behalf Of Stu Clarke
>>> Sent: 26 November 2009 10:23
>>> To: [log in to unmask]
>>> Subject: Re: Anderson Stress Meeting: September 2010 reminder
>>>
>>> Don't you hate it when someone gets that email in just before
>> you......
>>> I too have no particular stand on terminology, but I too was  
>>> surprised
>> by
>>> the stated scale of sedimentary intrusions. I have examined large
>> scale
>>> sedimentary intrusions in deltaic settings and currently work with  
>>> colleagues using oil-industry datasets on the same thing. I don't
>> think
>>> sedimentary intrusions have to be small scale......
>>>
>>> Stu
>>>
>>> -----Original Message-----
>>> From: Tectonics & structural geology discussion list [mailto:[log in to unmask] 
>>> ] On Behalf Of Macdonald,
>> Professor
>>> David I. M.
>>> Sent: 26 November 2009 10:11
>>> To: [log in to unmask]
>>> Subject: Re: Anderson Stress Meeting: September 2010 reminder
>>>
>>> Dear Eric
>>> I have no particular stand on the terminology for igneous rocks, but
>> you are
>>> incorrect in your assertions on the scale of sedimentary intrusions.
>> Salt
>>> is a sedimentary rock which can be injected through kilometers of
>> strata in
>>> bodies hundreds of metres to kilometers across.  Anyone who has ever
>> worked
>>> on deltas can point to mud diapirism on a similar scale.  Even the
>> humble
>>> sand injection feature is much larger than you make out; your
>> description
>>> seems to be of sand filling pre-existing cracks, whereas most sand  
>>> injections are of a fluid slurry under pressure.  These intrusions  
>>> can
>> be
>>> huge.  In the Mesozoic forearc basin of the Antarctic Peninsula,
>> sandstone
>>> dykes have been mapped with MINIMUM dimensions: 6 km long, cutting  
>>> 350
>> m of
>>> strata, and 1 m wide.  For more examples, see, among other papers:
>>>
>>> Hurst A. &  Cartwright J. A. Eds. 2007. Sand Injectites:   
>>> Implications
>> for
>>> hydrocarbon exploration and production.  Memoir 87 American
>> Association of
>>> Petroleum Geologists
>>>
>>> Hurst A.,  Cartwright J. &  Duranti D. 2003.  Fluidization  
>>> structures
>> in
>>> produced by upward injection of sand through a sealing lithology.   
>>> In:
>>> Subsurface sediment mobilization (eds. Van Rensbergen P.,Hillis
>> R.,Maltman
>>> A. J. & Morley,C.K.),  Geological Society Of London, London, 123-127
>>>
>>> Jonk R., Hurst A., Duranti D., Mazzini A., Fallick A. E. &   
>>> Parnell J.
>>> 2005.The origin and timing of sand injection, petroleum migration  
>>> and
>>> diagenesis: the Tertiary petroleum system of the South Viking  
>>> Graben,
>> North
>>> Sea. AAPG Bulletin,  89,  329-357
>>>
>>> Hurst A. &  Duranti D. 2004. Fluidisation and injection in the
>> deep-water
>>> sandstones of the Eocene Alba Formation (UK North Sea).  
>>> Sedimentology,
>> 51,
>>> 3,  503-529
>>>
>>> Hope this helps
>>> David Macdonald
>>>
>>> -----Original Message-----
>>> From: Tectonics & structural geology discussion list [mailto:[log in to unmask] 
>>> ] On Behalf Of Eric Essene
>>> Sent: 26 November 2009 07:39
>>> To: [log in to unmask]
>>> Subject: Re: Anderson Stress Meeting: September 2010 reminder
>>>
>>> Rob,
>>>    The term igneous intrusions is functionally a terrible term, a  
>>> distinction without a difference.  More than 99.9% (or more?) of  
>>> the time it means igneous rocks where the term is redundant.  If  
>>> one talks about sedimentary intrusions it is on a meter scale  
>>> feature, commonly even less--I have seen some down to cm scale.   
>>> When they formed and well afterward they did not look like dikes,  
>>> just fractures filled with loose sediment.  I discount the poor  
>>> term "sandstone dikes" as needing yet another confusing term.
>>>     On the other hand salt domes are metamorphic (recrystallized)  
>>> but not molten rock, well a little brine.  They were not in the  
>>> sedimentary group during formation.  Yes, we have diapirs of  
>>> metamorphic rock, although a lot of those gneiss domes probably  
>>> have a little melt.  I would agree about metamorphic diapirs but  
>>> simply would not call them metamorphic intrusions to avoid  
>>> confusion on a transitional rock.  Gneiss domes are a nice  
>>> description for them.
>>>     It must be exceedingly rare for igneous petrologists/geochemists
>>> to be presenting data on "sand dikes".   Salt domes are much larger
>>> but are as they form. Do you know of any igneous petrologist/  
>>> geochemist who would report on them in your symposium?  So  
>>> "sandstone dikes" are fractures filled with loose clastic material  
>>> and water, salt diapirs are all metamorphic and may have brine,  
>>> gneiss domes are often partial melts then at least partly igneous,  
>>> and the term "igneous intrusion" is clearly redundant to the  
>>> average passerby.  Is this really a useful terminology?
>>> cheers,
>>> eric
>>>
>>> On Nov 26, 2009, at 12:17 AM, Butler, Robert wrote:
>>>
>>>> Eric
>>>> Actually - there are lots of non-igenous intrusions in basins -  
>>>> sandstone dykes through 100s metres of strata. Not to mention mud  
>>>> diapirs, salt etc etc.... gas chimneys....
>>>> go google!
>>>> Cheers
>>>> Rob
>>>>
>>>> ________________________________________
>>>> From: Tectonics & structural geology discussion list
>>> [[log in to unmask]
>>>> ] On Behalf Of Eric Essene [[log in to unmask]]
>>>> Sent: 26 November 2009 05:09
>>>> To: [log in to unmask]
>>>> Subject: Re: Anderson Stress Meeting: September 2010 reminder
>>>>
>>>> Rob, Zoe, and all,
>>>>   Igneous intrusions as opposed to all those sedimentary plutons?
>>>> The phrase is nearly always meaningless and should not be used.
>>>>   Sounds like a great trip.
>>>> cheers,
>>>> eric
>>>>
>>>>
>>>> On Nov 25, 2009, at 11:28 PM, Butler, Robert wrote:
>>>>
>>>>> Dear all
>>>>> As we get our diaries together for 2010 we thought it timely to  
>>>>> remind you of the conference next year:
>>>>>
>>>>> Stress controls on faulting, fracturing and igneous intrusion in  
>>>>> the Earth's crust
>>>>>
>>>>> A meeting to commemorate the work of Ernest Masson Anderson on  
>>>>> the 50th anniversary of his death.
>>>>>
>>>>> 6-8 September 2010 at the University of Glasgow, UK
>>>>>
>>>>> Organisers: Zoe Shipton, Rick Sibson, Dave Healy, Rob Butler
>>>>>
>>>>> We will send out details of the meeting ("First Circular") in  
>>>>> January - Abstract deadline will be end April with a preliminary  
>>>>> programme drawn up through May.
>>>>> We are also planning a fieldtrip to the Hebrides and NW Scotland  
>>>>> to examine a variety of faults and the Tertiary igneous complexes.
>>>>> Again - further information will be included in the first  
>>>>> circular.
>>>>>
>>>>> Hope to see a bunch of you in Scotland next September!
>>>>> Zoe, Rick, Dave and Rob.
>>>>>
>>>>>
>>>>> The University of Aberdeen is a charity registered in Scotland,  
>>>>> No SC013683..
>>>>>
>>>>>
>>>>
>>>> The University of Aberdeen is a charity registered in Scotland,  
>>>> No SC013683..
>>>>
>>>>
>>>
>>> The University of Aberdeen is a charity registered in Scotland, No
>> SC013683.
>
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Zoe Shipton
> Department of Geographical and Earth Sciences
> University of Glasgow
> Gregory Building
> Glasgow G12 8QQ
> +44 (0)141 330 2783
> www.ges.gla.ac.uk/faff
>
>