[meteorite-list] New Campo -Myth Busted?
From: Michael Farmer <meteoritehunter_at_meteoritecentral.com>
Date: Tue Aug 24 13:07:15 2004 Message-ID: <008401c489fc$cdac1fb0$0200a8c0_at_S0031628003> Interesting, but what is the point? Are you making a point? Why are you worried about Campo now? Any why post "emails" with no authors. If people are not willing to post their names, regardless of the info, I think anything they write is worthless. I dont really care, as I have been sold out of Campos for years, but still, this is an odd discussion you are making. Mike Farmer ----- Original Message ----- From: "Adam Hupe" <raremeteorites_at_comcast.net> To: <meteorite-list_at_meteoritecentral.com> Sent: Tuesday, August 24, 2004 9:52 AM Subject: [meteorite-list] New Campo -Myth Busted? > Dear List, > > I would like to thank those who responded to my inquiry about old versus new > Campos. I am looking to explore new areas and thought this locality might > have been worth investigating but have since changed my mind. Below are a > set of responses that best address this issue. The authors would like to > remain anonymous so I left their names out. > > *********************************************** > Email #1 > > Your "well informed source" is correct on both counts. Illegal exportation > and there are no mountainside finds. The terrain is basically flat and the > strewn field is shorter and wider than presented in Cassiday's various > papers. The reports of a specimen recovery 70-80 km down-range are repeated, > but have never been evidenced. The difference between 'new' and 'old' Campos > is the depth of recovery. Cassiday's specimens recovered 1962-73 are both > 'new' and 'old'. Recovered at depth within the craters are 'new'; those > recovered from surface ejecta or from farmers' fields are 'old'. Repeated > irrigation and the use of fertilizers has taken its toll. Cassiday used a > WW2 metal detector in his search. With the increasing demand by collectors - > beginning about 1989 - much more powerful detectors are being used in > recovery; the deeper recoveries being more stable. Not all of the 'new' > specimens are stable as some specimens continue to be found at shallow > depths. The extremely flat surface of the region is subject to sheet > deposition 1-2 cm/100 yr (think Kansas). Runoff is limited to shallow > depressions and occasional shallow channels; the slopes of which might be > miss translated as mountain-sides. > > The pre-entry meteoroid is estimated to be ~ 3 m in diameter and masses ~ > 840,000 kg (Lieberman, et al., in MAPS Feb 2002) and suggests that many more > specimens will be smuggled out in the coming years. > > Other than the variously published photos by Cassidy et, al. I was only able > to locate photos of the "Haag" specimen. Its recovery down-range is > consistent with aerial break-up scenarios and is probably the Campo del > Cielo main mass. > > **************************************************** > Another Note: > > The place where the "New Campos" are found is the same that the one of the > "Old Campos". The difference is the "old" are near the surface, so them > intensely undergone the effects of the meteorization, mainly the humidity. > The "new" are deeper so that them could conserve its regmagliptes and have a > greater stability. The "New Campos" began to appear when the zone was > released with powerful metal detectors. Previously the espec?mentes were > found on the surface or raised when the fields were plowed. > The Campo del Cielo strewn field has 45km by 15km. But it has an area of > approximately 1500 hectares where the greater concentration is verified. > Many authors affirm that the strewn field reaches 80 km, because stories > exist on the denominated "Mes?n de Fierro", probably situated 70 km to the > NE of the main site. But until today it was not verified. > ******************************************************* > > I hope you found this information to be as interesting as I did, > > Adam > > > > > > > ______________________________________________ > Meteorite-list mailing list > Meteorite-list_at_meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list Received on Tue 24 Aug 2004 01:07:13 PM PDT |
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