Barry Bourne, Bingo with Google on that one, that paper a free download. Seismic shear velocity model data like Eric Debayle's was/is available for free too, and at 50-100 km cell sizes, not too coarse for eyeballing and arm waving on larger scale regional interps. It plots up nicely in 3D with the free global satellite gravity (satgrav) data sets/compilations that have improved in resolution the past 10+ years with the GOCE data now being available, beside GRACE and CHAMP. The satgrav data can be converted from free-air to Bouguer and inverted.
Offshore, marine sea-surface-based satgrav data like Geosat is higher resolution than the terrestrial satgrav, and can be merged into regional plan maps with the terrestrial, or alternatively the terrestrial data grids can be overlain on the marine. The Geosat data is public domain also, or was 10-15 years ago. Here's a link to one reference from 10 years ago- https://topex.ucsd.edu/sandwell/publications/122.pdf They're high enough resolution data sets where their transform fault traces can be extended on-shore. They might be used with the terrestrial data to further track down potential lithosphere/mantle-tapping rifts, transforms, sutures or pipes. Ed Cunion Red Rocks Geophysical mobile/text 001-720-300-3641 Sent from my T-Mobile Android device <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#m_-7853085641593176508_m_-1640595991816653482_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Thu, Aug 8, 2019 at 6:13 PM Barry Bourne via SEGMIN < [email protected]> wrote: > There are quite a number of papers on the subject and plenty of seismic > tomography modelling/processing that was done out of Australian National > University (ANU) trying to map these types of structures. > > > > White, L.T., Morse, M. P., and Lister, G. S., 2014. Lithospheric-scale > structures in New Guinea and their controls on the location of gold and > copper deposits. Solid Earth, 5, 163–179, 2014 > > > > Cheers > > Barry > > > > *From:* SEGMIN [mailto:[email protected]] *On Behalf Of *Ken > Witherly via SEGMIN > *Sent:* Thursday, 8 August 2019 8:36 PM > *To:* [email protected] > *Cc:* Ken Witherly <[email protected]> > *Subject:* [SEGMIN] Question > > > > Dear Colleagues- > > > > I have been asked by a colleague about a known geological feature in PNG > as his group is apparently trying to understand possible analogues > elsewhere. The question relates to- > > > > The Porgera/Mount Kare Transfer Structure. It is a deep crustal structure > that is not visible on surface but shows up in deep crustal gravity (and > possibly magnetic, seismic and MT???) inversions. > > > > Google turns up material on mag and gravity but I have not found anything > related to seismics or MT. Any suggestions appreciated. > > > > Regards/Ken > > > > *2019-Condor’s 20th Anniversary* > > > > Condor Consulting, Inc > > St 150 2201 Kipling St > > Lakewood CO 80215 USA > > T: 303-423-8475 > > > > Condor North Consulting > > St 1112 1030 West Georgia St > > Vancouver BC V6E 2Y3 > > T: 604-630-8334 > > > > E: [email protected] > > C: 303-520-5732 > > Skype-ken.witherly1 > > www.condorconsult.com > > > ----------------------- > SEGMIN community mailing list service ([email protected]). > Change your personal options here: > https://lists.geosoft.com/mailman/options/segmin/ed.cunion%40gmail.com > Colleagues can join here: > https://lists.geosoft.com/mailman/listinfo/segmin > Archives: https://lists.geosoft.com/mailman/private/segmin/ > NOTE that <Reply> will reply to all members of the list. >
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