Rich: Is there a way with Google Earth to estimate angles of crater impact. If there is then you could have a map as low-med-high angles and be able to establish some type of footprint for the impact area, and compare it to other ones.
If that were the case, then with a detail analysis of one in a group and relating it to the others you would have a time line or history of all the impact craters. regards michael barron On Thu, Feb 11, 2010 at 10:27 PM, Rich Murray <rmfor...@comcast.net> wrote: > YD impact black mat site in NW Venezuela Andes, WC Mahaney et al, > Geomorphology 2010 March: also 4 substantial amateurs: Rich Murray > 2010.02.11 > http://rmforall.blogspot.com/2010_02_01_archive.htm > Thursday, February 11, 2010 > http://groups.yahoo.com/group/astrodeep/message/41 > _____________________________________________________ > > > Rich Murray: Real science hops from failure to failure, from several > falsifiable hypotheses in confused competition to the next set, until a > consensus evolves around a surviving paradigm that often uses > aspects of its predecessors, adding unexpected novel ideas that lead > to productive questions and more definitive tests, as disparate data > starts to fit an overall unifying view. > > Right now, we seem to be in a phase of "herding cats" -- it seems > that objects have been hurling every which way during recent times. > > As one of the most unqualified participants, I hope to help raise > the level of openmindedness and unfettered curiousity in this game > of truth, for we all honestly hope for outcomes that advance our > jointly cocreated world, which has so richly benefited from the > ethical advances of inspired civil rational discourse based on > publicly shared information. > > We never know we don't know before we start to know... > > I hope an expert laboratory group will keenly examine the elements > and isotopes in the commonly found red, white, and dark fragments, > often as durable surface coatings that may be from high temperature > and pressure blasts. > _____________________________________________________ > > > Geomorphology > Volume 116, Issues 1-2, 15 March 2010, Pages 48-57 > doi:10.1016/j.geomorph.2009.10.007 > Copyright © 2009 Elsevier B.V. All rights reserved. > > Evidence from the northwestern Venezuelan Andes for > extraterrestrial impact: The black mat enigma > W.C. Mahaney a, a Quaternary Surveys, 26 Thornhill Ave., > Thornhill, Ontario, Canada L4J 1J4 > WC Mahaney <ar...@rogers.com> > V. Kalm b, b Institute of Ecology & Earth Sciences, > Tartu University, Tartu, EE51014, Estonia > D.H. Krinsley c, c Institute of Geological Sciences, > University of Oregon, Eugene, Oregon, 97403-1272, USA > P. Tricart d, d Laboratoire de Geodynamique des Chaînes Alpines, > University of Grenoble, Observatoire des Sciences de l'Univers, > 38041, Grenoble, France > S. Schwartz d, > J. Dohme f, f The Museum, The University of Tokyo, > Tokyo, 113-0033, Japan > K.J. Kim g, g Geological Research Division > (Prospective Geoscience Research Department), Korea Institute of > Geoscience and Mineral Resources (KIGAM), 92 Gwahang-no, > Yuseong-gu, Daejeon 305-350, Republic of Korea > B. Kapran a, > M.W. Milner a, > R. Beukens h, h IsoTrace Lab, Dept of Physics, > University of Toronto, Toronto, Ontario, Canada M5S 1A7 > S. Boccia i, i Department of Materials Science, > University of Toronto, Toronto, Ontario, Canada M5S 3E4 > R.G.V. Hancock j, j Department of Medical Physics and Applied > Radiation Sciences and Department of Anthropology, > McMaster University, Hamilton, Ontario, Canada L8S 4K1 > K.M. Hart k k School of Chemical Sciences, Dublin City > University, Ballymun Road, Glasnevin, Dublin 9, Ireland > and B. Kelleher k > Received 11 January 2009; revised 9 October 2009; > accepted 14 October 2009. Available online 24 October 2009. > > Abstract > > A carbon-rich black layer encrusted on a sandy pebbly bed of > outwash in the northern Venezuelan Andes, previously considered > the result of an alpine grass fire, is now recognized as a 'black mat' > candidate correlative with Clovis Age sites in North America, > falling within the range of 'black mat' dated sites (~ 12.9 ka cal BP). > > As such, the bed at site MUM7B, which dates to < 11.8 ka > 4C years BP (raw dates) and appears to be contemporaneous with > the Younger Dryas (YD) cooling event, marks a possibly much > more extensive occurrence than previously identified. > > No fossils (megafauna) or tool assemblages were observed at this > newly identified candidate site (3800 a.m.s.l.), as in the case of the > North American sites. > > Here, evidence is presented for an extraterrestrial impact event > at ~ 12.9 ka. > > The impact-related Andean bed, located ~20 cm above > 13.7-13.3 ka cal BP alluvial and glaciolacustrine deposits, > falls within the sediment characteristics and age range of 'black mat' > dated sites (~12.9 ka cal BP) in North America. > > Site sediment characteristics include: > carbon, > glassy spherules, > magnetic microspherules, > carbon mat 'welded' onto coarse granular material, > occasional presence of platinum group metals (Rh and Ru), > planar deformation features (pdfs) in fine silt-size fragmental grains > of quartz, > as well as orthoclase, > and monazite (with an abundance of Rare Earth Elements -- REEs). > > If the candidate site is 'black mat', correlative with the 'black mat' > sites of North America, such an extensive occurrence may support > the hypothesized airburst/impact over the Laurentide Glacier, which > led to a reversal of Allerød warming and the onset of YD cooling > and readvance of glaciers. > > While this finding does not confirm such, it merits further investigation, > which includes the reconnaissance for additional sites in > South America. > > Furthermore, if confirmed, such an extensive occurrence may > corroborate an impact origin. > > Keywords: Asteroid impact; Black mat; Younger Dryas; > Paleoclimate > > Article Outline > > 1. Introduction > 2. Regional geology > 3. Geomorphic background > 4. Methods and materials > 5. Results > 5.1. Stratigraphy > 5.2. Color and particle size > 5.3. Lithology > 5.4. Light microscopy > 5.5. Scanning electron microscopy > 5.6. Raman analysis > 6. Discussion > 6.1. Hypothesis 1 > 6.2. Hypothesis 2 > 6.3. Hypothesis 3 > 6.4. Hypothesis 4 > 7. Conclusions > Acknowledgements > References > > Purchase PDF (1680 K) > _____________________________________________________ > > > http://www.argonaut.arizona.edu/holliday.htm > > Late Quaternary sedimentology and geochronology of small playas > on the Southern High Plains, Texas and New Mexico, U.S.A. > Vance T. Holliday a, a Departments of Anthropology and > Geosciences, University of Arizona, Tucson, AZ 85721, USA > James H. Mayer b b Department of Geosciences, > University of Arizona, Tucson, AZ 85721, USA > and Glen G. Fredlund c c Department of Geography, University of > Wisconsin - Milwaukee, Milwaukee, WI 53201, USA > Received 13 April 2007. Available online 2 May 2008. > Quaternary Research > Volume 70, Issue 1, July 2008, Pages 11-25 > doi:10.1016/j.yqres.2008.02.009 > > "Playas are small, circular basins forming a ubiquitous component > of the southern High Plains landscape. > They are filled with carbonaceous mud deposited since > the terminal Pleistocene. > The stratigraphy and geochronology of 30 playas was investigated to > better understand the paleoenvironmental record of basin filling. > At the base of the fill in some playas is a well sorted eolian sand > dated between ~ 13,000 and ~ 11,000 14C yr BP... > The SHP [Southern High Plains] is an extensive semi-arid plateau > (~80,000 km2) in northwest Texas and eastern New Mexico (Fig. 2). > There are ~25,000 small playa basins (b5km2) dotting the landscape > (Fig. 1) (Sabin and Holliday, 1995), providing minimal topographic > relief on the plateau > (Reeves, 1972, 1990; Holliday et al., 1996; Holliday, 1997a). > ...Several lines of evidence indicate that many if not most basins > resulted from erosive processes, however, including centripetal > fluvial erosion and deflation > (Gustavson et al., 1995; Sabin and Holliday, 1995). > This evidence includes: disconformable contacts between basin fill > and the Blackwater Draw Formation, cross-cutting relationships > between the basins and the Blackwater Draw Formation, and > variation in playa size and shape as a function of variation in > sediment texture of the Blackwater Draw Formation. > None of the study basins were produced by extraterrestrial > processes, except for the Odessa Meteor Crater, despite claims > to the contrary by Firestone et al. (2006, p. 216-217). > Playa basins vary considerably in size. > The smallest are barely perceptible depressions a few meters in > diameter. > Larger playas are up to 5 km2 (2.5 km diameter), although a > few are much larger (Holliday et al., 1996). > Most are ~1.5 km2, however, and about half are ~0.1 km2 (Fig. 1) > (Sabin and Holliday, 1995). > Present-day depths range from basins that are completely filled > with lacustrine sediment and have no topographic expression to > basins >14 m deep..." > > > third Meteor Night, 7 pm Tuesday Feb 2, SF Complex -- soon I will > show Tim McElvain 3 sites in La Tierra-Las Dos subdivision, > Santa Fe, NM -- my samples show intense blast effects with surface > melting and mineral coatings: Rich Murray 2010.01.28 > http://rmforall.blogspot.com/2010_01_01_archive.htm > Thursday, January 28, 2010 > http://groups.yahoo.com/group/astrodeep/message/38 > > large dense fractal meteor cluster in Alaska? also 21 pages re > unusual 0.6 m rock in Palmer: Horace Heffner: > Rich Murray 2010.01.24 > http://rmforall.blogspot.com/2010_01_01_archive.htm > Sunday, January 24, 2010 > http://groups.yahoo.com/group/astrodeep/message/37 > > Meteor Night 7 pm tonight, Santa Fe Complex, Santa Fe, Jan 19, > Rich Murray with 10x12 screen on two extensive websites by > Dennis Cox and by Tim McElvain: Rich Murray 2010.01.19 > http://rmforall.blogspot.com/2010_01_01_archive.htm > Tuesday, January 19, 2010 > http://groups.yahoo.com/group/astrodeep/message/36 > > > http://astrofotos.info/main.php?g2_itemId=5301 > 28 small images > The Tupana (Panela crater) Event Hypothesis [ NE Brazil ] > Pierson Barretto cosmop...@gmail.com > > http://astrofotos.info/main.php?g2_itemId=5301 > 28 small images > The Tupana (Panela crater) Event Hypothesis -- NE Brazil > Imagens relacionadas às crateras meteoríticas, na Lua, na Terra. > Um ensaio sobre o Evento Tupana; a hipótese. > CLIQUE NA IMAGEM PARA LER MAIS. > Images related to meteoritic craters, in the Moon, the Earth. > An assay on the Tupana Event; the hypothesis. > Click in the images to read more. > > http://www.astrosafor.net/Huygens/2009/77/h-77-tupana.pdf 11p > [ in Spanish, with resume and photo ] > Pierson Barretto, PhD cosmop...@gmail.com; > > http://astrofotos.info/main.php?g2_itemId=41466&g2_imageViewsIndex=2 > #1/35 CapivaraPalaeoLagoons 4 craters > 9 km SE of Sao Raimundo Nonato on BR 324, > 858 km W of Recife on coast > Date: 12/03/2009 Owner: Pierson Barretto > Size: Full Size 1004x923 > #1 -9.0805 -42.6270 .396 km .394 low .2x.15 km ~2 m resolution > #2 -9.0764 -42.6592 .401 .397 .6x.3 > #3 -9.0743 -42.6378 .406 .400 .4x.2 > #4 -9.0626 -42.6435 .399 .396 .2x.2 > > http://astrofotos.info/main.php?g2_itemId=41432&g2_imageViewsIndex=2 > PalaeoLagoonZambia > Date: 12/01/2009 Owner: Pierson Barretto > Size: Full size: 1004x923 > -14.7400 23.9712 1.129 km al eye al 53.74 km 2005.05.16 > > > http://sites.google.com/site/dragonstormproject/ > Dennis Cox, Fresno, California > > > http://www.impactstructure.net/working-hypothesis.html > Thornton H. "Tim" McElvain, Santa Fe, New Mexico > > > http://www.perigeezero.org/treatise/index.html > phttp:// > www.perigeezero.org/treatise/Morphology/ejecta/argentina_splatter/index.html > [ Argentina slideshow: Google Earth images with coordinates ] > http://www.perigeezero.org/treatise/YDB/index.html > [ We presented a poster presentation the December 2009 AGU > meeting in San Francisco of some of the Perigee: Zero concepts > as they pertain to the Carolina bays and their role in identifying > a possible YDB impact crater. > A comprehensive review of the conjecture and our > Heuristic Argument is discussed in this section. > A PDF file of the submission in slide presentation form is available for > download HERE. > Please note that since the meeting, we have demoted Lake Michigan > in favor of an impact at the Saginaw Bay and Michigan proper, > although neither hypothesis has proven an adequate solution > at the present time. ] > http://cintos.org/cintosOrg/agu2009/PP31D-1387_Poster.pdf 18p > http://www.perigeezero.org/treatise/YDB/ObliqueImpacts/index.html > http://www.perigeezero.org/treatise/YDB/Distal%20Ejecta/index.html > > http://www.perigeezero.org/treatise/YDB/Distal%20Ejecta/CarolinaBays/index.html > http://www.perigeezero.org/treatise/discussion/index.html > http://www.perigeezero.org/treatise/timeline/index.html > http://perigeezero.org/graphics/poster_agu_2006c_page.png > [ in Vista, use Control + to enlarge image ] > Michael E Davias mich...@perigeezero.org; mich...@cintos.org; > Jeannette L Gilbride > > > awesome evidence (Google Earth images, stereo pairs, some videos) > from Mexico to Canada for 500 km comet rubble pile air impacts > 12950 BP -- Dennis Cox: Rich Murray 2010.01.13 > http://rmforall.blogspot.com/2010_01_01_archive.htm > Wednesday, January 13, 2010 > http://groups.yahoo.com/group/astrodeep/message/35 > > exact Carolina Bay crater locations, RB Firestone, A West, et al, > two YD reviews, 2008 June, 2009 Nov, > also 3 upcoming abstracts: Rich Murray 2009.11.14 > http://rmforall.blogspot.com/2009_11_01_archive.htm > Saturday, November 14, 2009 > http://groups.yahoo.com/group/astrodeep/message/31 > > Rich Murray, MA > Boston University Graduate School 1967 psychology, > BS MIT 1964, history and physics, > 1943 Otowi Road, Santa Fe, New Mexico 87505 > 505-501-2298 rmfor...@comcast.net > > http://groups.yahoo.com/group/AstroDeep/messages > > http://RMForAll.blogspot.com new primary archive > > http://groups.yahoo.com/group/aspartameNM/messages > group with 142 members, 1,588 posts in a public archive > > http://groups.yahoo.com/group/rmforall/messages > > participant, Santa Fe Complex www.sfcomplex.org > _____________________________________________________ > > ============================================================ > FRIAM Applied Complexity Group listserv > Meets Fridays 9a-11:30 at cafe at St. John's College > lectures, archives, unsubscribe, maps at http://www.friam.org >
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