Odale-Articles

From OttawaRasc
(Difference between revisions)
Jump to: navigation, search
(CONFIRMED IMPACT CRATERS/STRUCTURES*)
 
(39 intermediate revisions by one user not shown)
Line 1: Line 1:
__NOTOC__
 
 
=<center>'''MY AMATEUR IMPACT CRATER/STRUCTURE EXPLORATIONS'''</center>=
 
=<center>'''MY AMATEUR IMPACT CRATER/STRUCTURE EXPLORATIONS'''</center>=
 
+
=<center>'''''moved to'''''</center>=
<center>by: <rascMail id="codale0806" isp="rogers.com">Charles O'Dale</rascMail></center>
+
=<center>[http://craterexplorer.ca/ '''CRATER EXPLORER''']</center>=
 
+
{|width="100%" border="0"
+
|-valign="top"
+
|
+
[[Image:Odale articlesAt Halifax r.jpg|350px|left|thumb|Unless otherwise indicated, all of the aerial images on this RASC web site were taken from my chariot "GO ZooM". FYI, a report on one of our crater exploration trips can be viewed here: [https://docs.google.com/file/d/0B5plqUAmV6VBY3Z4RFJ3dXdER2M/edit?pli=1 Part 1] & [https://docs.google.com/file/d/0B5plqUAmV6VBVmRVeG9mTkRvaW8/edit?pli=1 Part 2].]][[Image:Odale Barringer1.jpg|right|350px|thumb|This is me fulfilling one of my lifelong dreams, exploring impact craters (but only on this planet at the present time!!).]]
+
 
+
<center>[[Odale articles UPDATES|'''''LATEST UPDATED/NEW ARTICLES''''']][[Image:Icon-new.gif|38px|Icon-new.gif]]</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#INTRODUCTION '''''INTRODUCTION''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#CONFIRMED_IMPACT_CRATERS.2FSTRUCTURES.2A '''''CONFIRMED IMPACT''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#SUSPECTED_IMPACT_CRATERS.2FSTRUCTURES '''''SUSPECTED IMPACT''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#NON-IMPACT_CRATERS.2FSTRUCTURES '''''NON-IMPACT''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#PLANET_VS_CRATER_SIZE '''''PLANET VS CRATER SIZE''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#RELATIVE_SIZE_OF_CANADIAN_METEORITE_CRATERS.2FSTRUCTURES '''''RELATIVE SIZE OF CANADIAN METEORITE CRATERS''''']</center>
+
<center>[[Odale-Articles-Crater Identification| '''''IDENTIFYING IMPACT STRUCTURES''''']]</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#EXTINCTIONS_VS_Possible_Impact_Relationship '''''EXTINCTIONS VS Possible Impact Relationship''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-Crater_Identification#CRATER_URL_References '''''CRATER URL REFERENCES'''''.]</center>
+
<center>[https://www.youtube.com/watch?v=xpnSOC7ItA4&feature=youtu.be '''''VIDEO - CRATER EXPLORATIONS''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale_Video '''''VIDEO PRESENTATIONS of IMPACT CRATERS/STRUCTURES''''']</center>
+
<center>[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#CRATER_EXPLORATION_ACQUAINTANCES '''''CRATER EXPLORATION ACQUAINTANCES''''']</center>
+
<center>[[Odale-Articles-Astronotes|'''''My crater articles in''''' ]][http://ottawa-rasc.ca/wiki/index.php?title=Astronotes_Online '''''AstroNotes''''']</center>
+
<center>[[Media:Odale_Apr09_JRASC.pdf|'''''Exploring the Pingualuit Impact Crater''''']] [http://www.rasc.ca/journal/index.shtml'''''April 2009, JRASC''''']</center>
+
<center>[http://www.planetary.org/connect/share-your-story/2015/20140121-Crater-Exploration-with-the-RASC.html '''RASC - The Planetary Society''']</center>
+
<center>[http://www.airspacemag.com/flight-today/crater-cosmic-proportions-180954664/?no-ist '''Air&Space SMITHSONIAN''']</center>
+
----
+
 
+
 
+
|}
+
 
+
=<center>'''INTRODUCTION'''</center>=
+
 
+
<center>'''"How bright and beautiful a comet is as it flies past our planet</center><center>[[Image:JohnThompson-halebopp.jpg]]</center><center>- ''provided'' it does fly ''past'' it"</center><center>ISAAC ASIMOV'''</center>
+
 
+
 
+
The scientific study of impact structures began only about 50 years ago. I’m dating myself, but that was about the time my interest in impact craters started. Like any kid, I spent hours looking at the craters on the Moon through my old telescope. Would I ever get a chance to explore a crater? Well since retirement, I combined my hobbies of astronomy, geology and [http://www.planetary.org/connect/share-your-story/2015/20140121-Crater-Exploration-with-the-RASC.html flying to explore impact craters] and structures in North America from [http://www.airspacemag.com/flight-today/crater-cosmic-proportions-180954664/ the air and ground].
+
You may think that the natural geological forces on our planet would have destroyed any features of impact craters. But, in some instances, these forces have “cross sectioned” the craters to ease our study. I find the geology in these craters and structures fascinating!
+
 
+
While studying the physics of impact sites, I have found that '''circular geological features''' can be produced by a number of geological processes, including igneous activity (diatremes, maars, calderas, volcanoes, or syenite/plutons), dissolution and collapse of salt or carbonate rocks by groundwater (dolines), salt or shale diapirism, regional tectonism (circular fold-interference patterns  or stratified circular features), glaciation (kettle holes), carbonate mounds, and by ''meteorite impacts'' (Stewart 2003). You can see below some of the [http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles#NON-IMPACT_CRATERS.2FSTRUCTURES ''non-impact structures''] that I have explored over the past few years.
+
 
+
Stewart S. A. 2003. '''How will we recognize buried impact craters in terrestrial sedimentary basins?''' ''Geology 31:929–932.''
+
{| class="FCK__ShowTableBorders" width="100%" border="0"
+
|- valign="top"
+
[[Image:Odale-Pingualuit.jpg|left|500px|thumb|This is me fulfilling [http://www.airspacemag.com/flight-today/crater-cosmic-proportions-180954664/?no-ist a lifelong dream] - standing on the rim of the [[Odale-Articles-Pingualuit|Pingualuit crater]]!]][[Image:Odale-01 CGOZM arecibo.jpg|right|525px|thumb|I flew my airplane (a C177B - GOZooM) to Puerto Rico to explore a crater only to find that someone had built a [http://www.naic.edu/index_scientific.php radio telescope] in it!]]
+
|}
+
My [http://ncse.com science] background plus the experience that I have gleaned from my past profession of [http://ottawa-rasc.ca/wiki/images/d/d1/Odale_EBT_OACETT.pdf semiconductor failure analysis] has given me the incentive to document my analysis of these craters and structures. I encourage anyone to please <rascMail id="codale0806" isp="rogers.com">contact me</rascMail> if they note any errors that I may have made in my documentation or if they have something to add. ''(A few of my expeditions actually resulted from suggestions made from readers of this site).''
+
 
+
Many of the other exploration trips that I have made in [http://www.youtube.com/user/MrGozoom/videos GOZooM] and on foot can be viewed [http://www.facebook.com/media/set/?set=a.109471511493.98388.735421493&type=3 here].
+
+
If you ever find yourself in Ottawa, please come to one of the [[About-Monthly Meetings|monthly meetings]] of the [http://ottawa-rasc.ca/index.php Ottawa Centre,] [http://www.rasc.ca Royal Astronomical Society of Canada.]
+
 
+
----
+
 
+
=<center>'''CONFIRMED IMPACT CRATERS/STRUCTURES*'''</center>=
+
 
+
<center>'''*'''In my articles I use the term '''"''crater''"''' to define a circular impact depression and the term '''"''structure''"''' to define an impact crater that is severely altered by erosion.</center>
+
 
+
<center>
+
{| class="wikitable sortable"
+
 
+
!Name
+
 
+
!Diameter  (km)
+
 
+
!Age  (million years)
+
 
+
![http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-Crater_Identification#Crater_Classification Morphological type]
+
 
+
![http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions Date Related Extinction]
+
 
+
!Notes
+
 
+
|-
+
 
+
|[[Odale-Articles-Barringer|Barringer]]
+
 
+
|1.19
+
 
+
|0.049 ± 0.003
+
 
+
|Simple<sup>1</sup>
+
 
+
|
+
 
+
|[http://science.nasa.gov/science-news/science-at-nasa/2000/ast26sep_1/ Jointed]
+
 
+
|-
+
 
+
|[[Odale_beaverhead|Beaverhead]]
+
 
+
|~100
+
 
+
|~600
+
 
+
|Peak ring<sup>1</sup>
+
 
+
|
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-Brent|Brent]]
+
 
+
|3.8
+
 
+
|396 ± 20
+
 
+
|Simple<sup>1</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E374_Ma_-_LATE_DEVONIAN_EXTINCTION Late Devonian]
+
 
+
|[http://www.youtube.com/watch?v=qkfbTFXlehc Overflight of Brent Crater]
+
 
+
|-
+
 
+
|[[Odale articles Carswell|Carswell]]
+
 
+
|39
+
 
+
|115 ± 10
+
 
+
|Peak ring<sup>1</sup>
+
 
+
|
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-Carlevoix|Charlevoix]]
+
 
+
|54
+
 
+
|342 ± 15
+
 
+
|Peak ring<sup>1</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E374_Ma_-_LATE_DEVONIAN_EXTINCTION Late Devonian]
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-Carlevoix#Charlevoix_Earthquake_Zone Elevated Earthquake Zone]
+
 
+
|-
+
 
+
|[[Odale-Articles-ClearwaterEast|Clearwater East]]
+
 
+
|26
+
 
+
|~460–470 
+
 
+
|Central peak<sup>1</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E450_Ma_-_ORDOVICIAN_MULTIPLE_IMPACT.3F Ordovician]
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-ClearwaterEast#Possible_Multiple_Impact Possible Multiple Impact?]
+
 
+
|-
+
 
+
|[[Odale-Articles-ClearwaterWest|Clearwater West]]
+
 
+
|32
+
 
+
|290 ± 20
+
 
+
|Peak ring<sup>1</sup>
+
 
+
|
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-ClearwaterEast#Possible_Multiple_Impact Possible Multiple Impact?]
+
 
+
|-
+
 
+
|[[Odale articles Cloud Creek|Cloud Creek]]
+
 
+
|7
+
 
+
|~190 +/- 30 Ma
+
 
+
|Complex<sup>2</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#201.3_Ma_-_TRIASSIC-JURASSIC_EXTINCTION Triassic-Jurassic]
+
 
+
|Dated chronostratigraphicly
+
 
+
|-
+
 
+
|[[Odale articles Deep Bay|Deep Bay]]
+
 
+
|9.5
+
 
+
|99 ± 4
+
 
+
|Flat floored<sup>1</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale articles Des Plaines|Des Plaines]]
+
 
+
|8
+
 
+
|<280
+
 
+
|Complex<sup>2</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale Articles Eagle Butte|Eagle Butte]]
+
 
+
|10
+
 
+
|<65
+
 
+
|Central peak<sup>2</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale articles Elbow|Elbow]]
+
 
+
|8
+
 
+
|395 ± 25
+
 
+
|Complex<sup>2</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E374_Ma_-_LATE_DEVONIAN_EXTINCTION Late Devonian]
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale articles Glover Bluff|Glover Bluff]]
+
 
+
|8
+
 
+
|<500
+
 
+
|Complex<sup>2</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale articles Gow|Gow]]
+
 
+
|5
+
 
+
|<250
+
 
+
|Complex <sup>2</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#252.28_Ma_-_PERMIAN-TRIASSIC_EXTINCTION Permian–Triassic (P–Tr) extinction event]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-Holleford|Holleford]]
+
 
+
|2.35
+
 
+
|550 ±100
+
 
+
|Simple<sup>1</sup>
+
 
+
|
+
 
+
|[http://www.youtube.com/watch?v=jbTK5zrifKs&list=TLTuNbSr91Wno Overflight of Holleford Crater]
+
 
+
|-
+
 
+
|[[Odale-Articles-IleRouleau|Ile Rouleau]]
+
 
+
|4
+
 
+
|<300
+
 
+
|Central peak<sup>3</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale-Articles-LacCouture|Lac Couture]]
+
 
+
|8
+
 
+
|425 ± 25
+
 
+
|Central peak<sup>1</sup>
+
 
+
||[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E450_Ma_-_ORDOVICIAN_MULTIPLE_IMPACT.3F Ordovician]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-LacLaMoinerie|Lac La Moinerie]]
+
 
+
|8
+
 
+
|400 ± 50
+
 
+
|Central peak<sup>1</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E374_Ma_-_LATE_DEVONIAN_EXTINCTION Late Devonian]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-Manicouagan|Manicouagan]]
+
 
+
|100
+
 
+
|214 ± 1
+
 
+
|Peak ring basin<sup>5</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E214_Ma_-_TRIASSIC-JURASSIC_EXTINCTION_-_Impact.3F_.28Smith_2011.29 Late Triassic]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles Manson|Manson]]
+
 
+
|~35
+
 
+
|73.8
+
 
+
|Central peak<sup>1</sup>
+
 
+
|
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles Maple Creek|Maple Creek]]
+
 
+
|6
+
 
+
|<75
+
 
+
|Central peak<sup>5</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale-Articles-Mistastin|Mistastin]]
+
 
+
|28
+
 
+
|36.6 ± 2
+
 
+
|Central peak basin<sup>6</sup>
+
 
+
|
+
 
+
|
+
 
+
|-
+
 
+
|[[odale_montagnais|Montagnais]]
+
 
+
|45
+
 
+
|50.5 ± 0.76
+
 
+
|Central peak<sup>1</sup>
+
 
+
|
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles Newporte|Newporte]]
+
 
+
|3.2
+
 
+
|<500
+
 
+
|Simple<sup>2</sup>
+
 
+
|
+
 
+
|Geological biostratigraphic dating
+
 
+
|-
+
 
+
|[[Odale Articles Pilot|Pilot Lake]]
+
 
+
|6
+
 
+
|445 ± 2
+
 
+
|Complex<sup>2</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E450_Ma_-_ORDOVICIAN_MULTIPLE_IMPACT.3F Ordovician]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-Pingualuit|Pingualuit]]
+
 
+
|3.44
+
 
+
|1.4 ± 0.1
+
 
+
|Simple<sup>1</sup>
+
 
+
|
+
 
+
|[http://www.youtube.com/watch?v=4qjufxQaB2Y&feature=youtu.be Overflight of Pingualuit Crater]
+
 
+
|-
+
 
+
|[[Odale-Articles-Presquile|Presqu'ile]]
+
 
+
|24
+
 
+
|<500
+
 
+
|Central peak<sup>1</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale Articles Red Wing|Red Wing]]
+
 
+
|9.1
+
 
+
|200 ± 25
+
 
+
|''Probable'' Complex<sup>8</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E214_Ma_-_TRIASSIC-JURASSIC_EXTINCTION_-_Impact.3F_.28Smith_2011.29 Late Triassic/][http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#201.3_Ma_-_TRIASSIC-JURASSIC_EXTINCTION Triassic-Jurassic]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale Articles Rock Elm|Rock Elm]]
+
 
+
|6
+
 
+
|420–440
+
 
+
|Central peak<sup>7</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E450_Ma_-_ORDOVICIAN_MULTIPLE_IMPACT.3F Ordovician]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-SlateIslands|Slate Islands]]
+
 
+
|32
+
 
+
|436 Ma ± 3
+
 
+
|Central peak<sup>1</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E450_Ma_-_ORDOVICIAN_MULTIPLE_IMPACT.3F Ordovician]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-StMartin|St. Martin]]
+
 
+
|~40
+
 
+
|227.8 ±0.9
+
 
+
|Central peak<sup>1</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E214_Ma_-_TRIASSIC-JURASSIC_EXTINCTION_-_Impact.3F_.28Smith_2011.29 Late Triassic]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-Sudbury|Sudbury]]
+
 
+
|250
+
 
+
|1852 +4/-3
+
 
+
|Multi ring?<sup>1</sup>
+
 
+
|
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-Sudbury#SUDBURY_DISTAL_EJECTA_.28fallout_from_the_Sudbury_impact.29 Sudbury Distal Ejecta]
+
 
+
|-
+
 
+
|[[Odale-Articles-UpheavalDome|Upheaval Dome]]
+
 
+
|5.5
+
 
+
|<170
+
 
+
|Central peak<sup>4</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale articles Viewfield|Viewfield]]
+
 
+
|2.5
+
 
+
|190 ± 20
+
 
+
|Simple<sup>2</sup>
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#201.3_Ma_-_TRIASSIC-JURASSIC_EXTINCTION Triassic-Jurassic]
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale-Articles-Wanapitei|Wanapitei]]
+
 
+
|3 to 7.5
+
 
+
|37.2 ± 1.2
+
 
+
|Flat floored?<sup>1</sup>
+
 
+
|
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale-Articles-WestHawk|West Hawk]]
+
 
+
|2.44
+
 
+
|100
+
 
+
|Simple<sup>1</sup>
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale-articles-Whitecourt|Whitecourt]]
+
 
+
|0.036
+
 
+
|0.00113
+
 
+
|Simple<sup>1</sup>
+
 
+
|
+
 
+
|
+
 
+
|}
+
</center>
+
<sup>1</sup> Dence, Michael R. [http://onlinelibrary.wiley.com/doi/10.1111/j.1945-5100.2004.tb00340.x/pdf Structural evidence from shock metamorphism in simple and complex impact craters: Linking observations to theory.] ''Meteoritics & Planetary Science 39. Nr 2, 267-286'' (2004).
+
 
+
<sup>2</sup> Grieve R.A.F., Impact structures in Canada, ''Geological Association of Canada'', 2006.
+
 
+
<sup>3</sup> Spray J.G. ''et al''. [http://www.lpi.usra.edu/meetings/metsoc2007/pdf/5331.pdf A marine magnetic study of the Ile Rouleau impact structure, Lake Mistassini, Quebec Canada.] ''Meteoritics, 70th Annual Meeting'' (2007).
+
 
+
<sup>4</sup> Eugene M. Shoemaker, Bryan J. Kriens, Ken E. Herkenhop, [http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/20176/1/98-1053.pdf GEOLOGY OF THE UPHEAVAL DOME IMPACT STRUCTURE, SOUTHEAST UTAH]. ''Journal of Geophysical Research--Planets'', April 16, 1998.
+
 
+
<sup>5</sup> Grieve R.A.F. and Head J.W. [http://www.planetary.brown.edu/pdfs/457.pdf The Manicouagan impact structure: An analysis of its original dimensions and form.] ''Journal of Geophysical Research'' 88:A807-A818 (1983).
+
 
+
<sup>6</sup> French, B.M. [http://www.lpi.usra.edu/publications/books/CB-954/CB-954.intro.html Traces of Catastrophe], ''Lunar and Planetary Institute'', 1998
+
 
+
<sup>7</sup> Cordua, W. S., "The Rock Elm Structure, Pierce County, Wisconsin, a possible cryptoexplosion structure", ''Geology'', vol. 13, p. 372-374. 1985.
+
 
+
<sup>8</sup>Donofrio, Richard R., IMPACT CRATERS: IMPLICATIONS FOR BASEMENT HYDROCARBON PRODUCTION. ''Journal of Petroleum Geology, 3, 3, pp. 279-302'', 1981.
+
----
+
 
+
=<center>'''SUSPECTED IMPACT CRATERS/STRUCTURES'''</center>=
+
 
+
<center>
+
{| class="wikitable sortable"
+
 
+
!Name
+
 
+
!Diameter  (km)
+
 
+
![http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-Crater_Identification#Part_VIII_-_Radiometric_Dating_Of_Meteorite_Craters Age]
+
 
+
![http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-Crater_Identification#Crater_Classification Suspect Morphological type]
+
 
+
![http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#EXTINCTIONS_VS_Possible_Impact_Relationship Date Related Extinction]
+
 
+
!Notes
+
 
+
|-
+
 
+
|[[Odale-Articles-Merewether|Merewether, Labrador]]
+
 
+
|0.19812 (largest of three)
+
 
+
|<870 years ?
+
 
+
|Simple
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E12.2C000_years_-_YOUNGER_DRYAS_.28YD.29_EXTINCTION Younger Drias extinction?]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles bloody creek|Bloody Creek, Nova Scotia]]
+
 
+
|0.350 X 0.420
+
 
+
|~12,000 years?
+
 
+
|Simple
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E12.2C000_years_-_YOUNGER_DRYAS_.28YD.29_EXTINCTION_Extinction Younger Drias extinction?]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles charity shoal|Charity Shoal, Lake Ontario]]
+
 
+
|~1
+
 
+
| ?
+
 
+
|Simple
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E12.2C000_years_-_YOUNGER_DRYAS_.28YD.29_EXTINCTION Younger Drias extinction?]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles Florida Crater|Florida Crater/Structure]]
+
 
+
|~1
+
 
+
|<40 ma - Estimate
+
 
+
|Central Peak?
+
 
+
|
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles eclipse lake|Eclipse Lake, Labrador]]
+
 
+
|1.5
+
 
+
| ?
+
 
+
|Simple - Possible flat-floored
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E12.2C000_years_-_YOUNGER_DRYAS_.28YD.29_EXTINCTION Younger Drias extinction?]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles courval|Lac de Courval, Quebec]]
+
 
+
|~1.6
+
 
+
| ?
+
 
+
|Simple
+
 
+
|
+
 
+
|Circular lake
+
 
+
|-
+
 
+
|[[Odale articles franktown|Franktown structure, Ontario]]
+
 
+
|~2
+
 
+
|>400 ma
+
 
+
|Simple
+
 
+
|
+
 
+
|Circular depression
+
 
+
|-
+
 
+
|[[Odale articles Lac du Bonnet|Lac du Bonnet, Manitoba]]
+
 
+
|~3.8
+
 
+
| ?
+
 
+
|Simple
+
 
+
|
+
 
+
|Circular magnetic anomaly
+
 
+
|-
+
 
+
|[[Odale Articles Corossol|Corossol Structure, Gulf of St. Lawrence]]
+
 
+
|4.0
+
 
+
|~12,000 years?
+
 
+
|Central Peak
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E12.2C000_years_-_YOUNGER_DRYAS_.28YD.29_EXTINCTION Younger Drias extinction?]
+
 
+
|
+
 
+
|-
+
 
+
|[[Odale articles charron lake|Charron Lake, Ontario]]
+
 
+
|>4.5
+
 
+
| ?
+
 
+
|Simple
+
 
+
|
+
 
+
|Negative magnetic anomaly
+
 
+
|-
+
 
+
|[[Odale articles Kakiattukallak Lake|Kakiattukallak Lake, Quebec]]
+
 
+
|3 - 6
+
 
+
| ?
+
 
+
|Simple
+
 
+
|
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-ClearwaterEast#Possible_Multiple_Impact Possible Multiple Impact?]
+
 
+
|-
+
 
+
|[[Odale-Articles-Skeleton|Skeleton Lake, Ontario]]
+
 
+
|3.5
+
 
+
|~800 ma
+
 
+
|Simple
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale articles Victoria Island Structure|Victoria Island, California]]
+
 
+
|5.5
+
 
+
|37-49 ma
+
 
+
|Simple
+
 
+
|
+
 
+
|Geological dating
+
 
+
|-
+
 
+
|[[Odale-Articles-PantherMountain|Panther Mountain, New York state]]
+
 
+
|10
+
 
+
|~375 ma
+
 
+
|Central peak
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale_articles_extinctions#.7E374_Ma_-_LATE_DEVONIAN_EXTINCTION Late Devonian]
+
 
+
|[http://ottawa-rasc.ca/wiki/index.php?title=Odale-Articles-PantherMountain#Panther_Mountain_Crater_.E2.80.9CAnalog.E2.80.9D_on_Mars Inverted relief]
+
 
+
|-
+
 
+
|[[Odale articles Howell Creek BC|Howell Creek, BC]]
+
 
+
|10
+
 
+
|90-97 ma
+
 
+
|Simple
+
 
+
|
+
 
+
|Circular geologic formation
+
 
+
|-
+
 
+
|[[Odale-Articles-CanAm|Can-Am, Lake Huron]]
+
 
+
|100
+
 
+
|~500 ma
+
 
+
|Central peak
+
 
+
|
+
 
+
|Underwater in Lake Huron
+
 
+
|-
+
 
+
|[[Odale articles touchwood|Touchwood Hills, Saskatchewan]]
+
 
+
|>200
+
 
+
|>541 ma
+
 
+
|Multi-ring Basin?
+
 
+
|
+
 
+
|Under the Williston Basin
+
 
+
|-
+
 
+
|[[Odale articles hudsonbayarc|Hudson Bay Arc]]
+
 
+
|>450
+
 
+
| ?
+
 
+
|Multi ring basin?
+
 
+
|
+
 
+
|AKA - Nastapoka Arc
+
 
+
|}
+
 
+
</center>
+
----
+
 
+
=<center>'''NON-IMPACT CRATERS/STRUCTURES'''</center>=
+
During my aerial meteorite crater explorations over various points of the North American Continent, I have noticed and documented a few geological features that are suspiciously shaped like meteorite craters. Also, I have investigated a few that were suggested by people who have contacted me after reading my meteorite articles. I have listed below the “crater like” structures that I have documented and could be confirmed as impact related if in the future [[Odale-Articles-Crater Identification|evidence]] is found. I will be periodically adding more features as I visit them. If you have any additional information on any of the structures that I have documented or any new possible meteorite craters, <rascMail id="codale0806" isp="rogers.com">please let me know</rascMail>.
+
 
+
<center>
+
 
+
{| class="wikitable sortable"
+
 
+
!Name
+
 
+
!Diameter
+
 
+
!Morphology
+
 
+
|-
+
 
+
|[[Odale articles otter lake|Non-Impact Circular Structures]]
+
 
+
|
+
 
+
|Various
+
 
+
|-
+
 
+
|[[Odale articles parry sound|Lakes McGruther & Dell, Ontario]]
+
 
+
|~2.3 Kilometres
+
 
+
|Stratified circular feature
+
 
+
|-
+
 
+
|[[Odale articles FortRae|Fort Rae, Great Slave Lake, NWT]]
+
 
+
|~2.8 Kilometres
+
 
+
|Volcanic crater
+
 
+
|-
+
 
+
|[[Odale articles Alsever Lake|Alsever Lake, Ontario]]
+
 
+
|~4 Kilometres
+
 
+
|[[Odale-Articles-Crater_Identification#Alsever_Lake_compared_to_Brent_impact_crater|Brent]] analog
+
 
+
|-
+
 
+
|[[Odale articles skootamatta|Lake Skootamatta, Ontario]]
+
 
+
|~5.5 Kilometres
+
 
+
|Syenite/Pluton - [[Odale-Articles-Crater_Identification#Presqu.27ile_compared_to_Lake_Skootamatta|Presqu'ile]] analog
+
 
+
|-
+
 
+
|[[Odale articles moriah|Mount Moriah, Ontario]]
+
 
+
|~5.5 Kilometres
+
 
+
|Syenite/Pluton
+
 
+
|-
+
 
+
|[[Odale articles mecatina|Lake Mecatina, Quebec]]
+
 
+
|~6.4 Kilometres
+
 
+
|Stratified circular feature
+
 
+
|-
+
 
+
|[[Odale articles lakebruno|Sainte-Véronique, Quebec]]
+
 
+
|~9 Kilometres
+
 
+
|Syenite/Pluton
+
 
+
|-
+
 
+
|}
+
</center>
+
 
+
----
+
<center>
+
 
+
='''PLANET VS CRATER SIZE'''=
+
</center>
+
 
+
<center>
+
{| class="wikitable sortable"
+
 
+
!SOLAR SYSTEM BODY
+
 
+
!DIAMETER km
+
 
+
!GRAVITY
+
 
+
!ESCAPE VELOSITY
+
 
+
!BASINS km
+
 
+
!PEAK RING km
+
 
+
!COMPLEX km
+
 
+
!SIMPLE km
+
 
+
!REFERENCE
+
 
+
|-
+
 
+
|MERCURY
+
 
+
|4,880
+
 
+
|0.38
+
 
+
|4.2 km/s
+
 
+
|>~400
+
 
+
|~110 - ~400
+
 
+
|10 - 110
+
 
+
|<~10
+
 
+
|Greeley 2011
+
 
+
|-
+
 
+
|VENUS
+
 
+
|12,104
+
 
+
|0.91
+
 
+
|10.4 km/s
+
 
+
| -
+
 
+
|>50 - 60
+
 
+
|10 - ~50
+
 
+
|<10 - 20
+
 
+
|Greeley 2011
+
 
+
|-
+
 
+
|EARTH
+
 
+
|12,756
+
 
+
|1
+
 
+
|11.2 km/s
+
 
+
|>100
+
 
+
|~30 - ~100
+
 
+
|5 - ~30
+
 
+
|<5
+
 
+
|Grieve 2006
+
 
+
|-
+
 
+
|EARTH'S MOON
+
 
+
|3,476
+
 
+
|0.17
+
 
+
|2.38 km/s
+
 
+
|>220
+
 
+
|175 - 220
+
 
+
|30 - 175
+
 
+
|<30
+
 
+
|Wood 2003
+
 
+
|-
+
 
+
|MARS
+
 
+
|6,788
+
 
+
|0.38
+
 
+
|5.0 km/s
+
 
+
|
+
 
+
|~200
+
 
+
|~20
+
 
+
|~2.6
+
 
+
|Greeley 2011
+
 
+
|
+
 
+
|}
+
</center>
+
 
+
{|width="100%" border="0"
+
|-valign="top"
+
|
+
 
+
[[Image:Odale depth to diameter.jpg|500px|left|thumb|The depth to diameter ratio of craters smaller than a certain size is a constant, as predicted by the Maxwell Z-model. Below a break point (10 km for the Moon), the ratio follows a power law, decreasing as size increases [Hiesinger, 2006, Sharpton, 1994]. Source: [Hiesinger, 2006].]]The primary factors governing the size and shape of impact craters are the impact energy, gravity and properties of the target. Gravity affects the cratering process by influencing the dimensions of the excavation bowl, the extent of the ejecta and various post-impact crater modifications. In the modification stages of impact cratering, gravity influences the degree of slumping, perhaps governing the size of potential central uplifts (Greeley 2011).[[Image:Odale Impact result.jpg|500px|right|thumb|The '''Earth''' is immersed in a swarm of Near Earth Asteroids (NEAs) capable of colliding with our planet, a fact that has become widely recognized within the past decade. The first comprehensive modern analysis of the impact hazard resulted from a NASA study requested by the United States Congress. This Spaceguard Survey Report (Morrison 1992) provided a quantitative estimate of the impact hazard as a function of impactor size (or energy) and advocated a strategy to deal with such a threat (Morrison, 2007).]]
+
|}
+
 
+
References
+
 
+
Greeley, R. 2011, Planetary Geomorphology, ''Cambridge''.
+
 
+
Grieve, R.A.F. 2006, Impact Structures in Canada, ''Geological Association of Canada''.
+
 
+
Morrison, D. 2007 The Impact Hazard: Advanced NEO Surveys and Societal Responses, ''Comet/Asteroid Impacts and Human Society'' 2007, pp 163-173
+
 
+
Wood, C.A. 2003, The Modern Moon, ''Sky Publishing''
+
----
+
 
+
=<center>'''RELATIVE SIZE OF CANADIAN METEORITE CRATERS/STRUCTURES'''</center>=
+
{|width="100%" border="0" cellpadding="6"
+
|-valign="top"
+
|
+
[[Image:Odale-Craterresearch1.jpg|left|400px]]
+
[[Image:Odale-craterresearch2.jpg|right|500px]]
+
|}
+
[[Image:Odale-Relative sizes sm.jpg|center|600px]]
+
 
+
References:
+
 
+
Beals, C.S. & Halliday, I. 1967: Impact Craters of the Earth and Moon, Journal of the Royal Astronomical Society of Canada, Vol. 61, p.295.
+
 
+
Grieve R.A.F. & Robertson P.B. 1975, IMPACT STRUCTURES IN CANADA: THEIR RECOGNITION AND CHARACTERISTICS, Journal of the Royal Astronomical Society of Canada, February 1975.
+
----
+
 
+
=<center>'''CRATER EXPLORATION ACQUAINTANCES'''</center>=
+
{|border="0" width="100%"
+
|-valign="top"
+
|
+
|[[Image:Odale Dence.JPG|450px|left|thumb|Dr. Michael R. Dence and yours truly at a 2012 Sigma Xi Companions in Research meeting, Ottawa.
+
 
+
Dr. Dence was prime on [http://articles.adsabs.harvard.edu/full/seri/Metic/0002//0000249.000.html impact crater research] within the Canadian Shield, 1961-81. He was one of the few indiviuals responsible for transforming terrestrial impact crater research into a respectable and scientific discipline of planetary science.]]
+
 
+
|[[Image:Odale articles Halliday.JPG|475px|right|thumb|Dr. Ian Halliday and yours truly, Ottawa 2012.
+
 
+
Dr. Halliday was a pioneer on [http://adsabs.harvard.edu/full/1964Metic...2...79H impact crater research] authoring several papers on the subject. His [http://adsabs.harvard.edu/full/1966JRASC..60...59H field research] provided evidence in support of a meteoritic origin for [[Odale-Articles-WestHawk|West Hawk Lake, Manitoba, Canada]]]].
+
|}
+
 
+
{|border="0" width="100%"
+
|-valign="top"
+
|[[Image:Odale articles DrHerd.jpg|450px|left|thumb|Dr. Christopher Herd and yours truly at the 2012 RASC GA in Edmonton.
+
 
+
Dr. Herd is Associate Professor, Department of Earth and Atmospheric Sciences at the University of Alberta. He was prime in the confirmation of the [[Odale-articles-Whitecourt|Whitecourt Crater]] as an impact structure. He has published papers regarding [http://www.cspg.org/cspg/documents/Conventions/Archives/Annual/2010/0836_GC2010_Astromaterials_Curation_and_Research_in_Canada.pdf astromaterials] and their significance.]]
+
 
+
 
+
|[[Image:Odale articles Blyth Robertson.jpg|495px|right|thumb|Yours truly with Blyth Robertson. We are standing in front of a desiccation structure (fosilized creek). Dr. Blyth Robertson is Emeritus Scientist with the Geological Survey of Canada. Of the 37 years that he spent with Natural Resources Canada, Dr. Robertson spent 20 years [http://articles.adsabs.harvard.edu//full/1977iecp.symp..687R/0000687.000.html researching impact craters] in
+
Canada and worldwide. In the 1970's Dr. Robertson was instrumental in confirming the impact nature of a large site in northern Canada known as the Haughton Crater.]]
+
 
+
|}
+
 
+
+
 
+
 
+
 
+
<center>'''"Civilization exists by geological consent .... ''subject to change without notice''." - W. Durant'''</center>
+
 
+
 
+
 
+
----
+
 
+
<center>[[Image:Odale-Disclaimer_message.gif]]</center>
+
 
+
----
+
 
+
[[Image:Odale-Chuck.jpg|500px|right|thumb|The "Changing Earth" section of the [http://dynamicearth.ca/earth-attractions/earth-attractions.html Dynamic Earth Museum] at [http://sciencenorth.ca/# Science North Sudbury] is presenting my images of the [[Odale-Articles-Manicouagan|Manicouagan]], [[Odale-Articles-Pingualuit|Pingualuit (Chubb)]] and [[Odale-Articles-Barringer|Barringer]] meteorite craters that I have documented on my expeditions. This is me with a smug look on my face beside the poster.]]As a member of the Ottawa Centre of the Royal Astronomical Society of Canada, I am proud that we joined with the [https://royalsociety.org/~/media/Royal_Society_Content/policy/publications/2009/1111111387.pdf '''Royal Society'''] and many other [http://ncse.com/media/voices/science '''Scientific and Scholarly Organizations'''] to publish our [http://ottawa-rasc.ca/wiki/index.php?title=Position_Statement_on_Science_and_Evolution '''Ottawa Centre RASC - Position Statement on Science and Evolution''']
+
 
+
 
+
<center>'''"We, all of us, are what happens when a primordial mixture of hydrogen and helium evolves for so long that it begins to ask where it came from." ''Jill Tarter'''''</center>
+
 
+
----
+
 
+
<center>[[Ottawa Centre, RASC|'''Back to the main OTTAWA CENTRE RASC page.''']]</center>
+
 
+
 
<br><br>
 
<br><br>
 
{{whats-this-wiki-thing}}
 
{{whats-this-wiki-thing}}

Latest revision as of 19:00, 21 February 2017

MY AMATEUR IMPACT CRATER/STRUCTURE EXPLORATIONS

moved to

CRATER EXPLORER



Personal tools