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Archive 1

Comprises

In a recent edit summary: "someone reversed "is comprised of" to "comprises" (which completely changes the meaning)" so simplified wording to "is made up of"

"Comprises" means "is made up of" or "is composed of". "Is comprised of" is flagged as informal or incorrect by many dictionaries. See also wikt:comprise. The "is made up of" wording is fine too though, so no need to change it. -- JHunterJ 20:25, 3 June 2007 (UTC)

Steens flow

The scientific opinion seems to moving towards the Steens flow being the initial ("oldest") event. Any opinions re updating the article to reflect that? - J. Johnson (JJ) (talk) 18:44, 12 October 2010 (UTC)

Agree. Made a minor chage based on Camp reference, but the whole dating issue needs to be unraveled. Will chat with Steve Reidel at WSU to to determine what he recommends for references.
Thanks for spotting this out of date information - Williamborg (Bill) 20:55, 25 August 2011 (UTC)
Yes, Steve is one of the best people to ask (and I am impressed that you know him). I wonder if he would have any suggestions regarding the article as a whole? - J. Johnson (JJ) (talk) 22:11, 26 August 2011 (UTC)
Not so hard to ask - i'm taking Steve's intro Geology course this term - he seems eminently approachable. And yes, i'm sure he'll have some useful comments on the article - but before asking him to review it, i'm inclined to clean up some of the obviously outdated material. As you pointed out with your comment on Steens, the literature has evolved quite a bit since this article started back on 2006 - and it appears Steens and CRBG are now considered different parts of the same large igneous province. I pulled a bunch of articles today and will try to incorporate some of the more recent material. And update the dates - which are now internally contradictory. I'd appreciate your critiques as this evolves over the next few weeks. Skål - Williamborg (Bill) 06:02, 27 August 2011 (UTC)
Before asking him to review the article, see if he'd suggest what major points ought to be covered. Also, I would suggest converting the article to Harv templates, with which I would be happy to assist. And let me know if need any help finding articles. - J. Johnson (JJ) (talk) 16:55, 27 August 2011 (UTC)

<==
Good idea. Will ask Steve about his view of the major points.

Know that there has been a debate whether Harvard ref (HR) should be the preferred usage, which has gone on unresolved on Wikipedia forever. Myself, i don't have that strong an opinion. Mostly i think references should be used, irrespective of the formatn. However, i can see at least one advantage of HR - it is easier to add material from a reference without having to search for the first use. But the alternative notation works easily enough too. Regardless, if you want to convert the article to Harvard notation, feel free. It will be an interesting exercise for me to adjust.

Skål - Williamborg (Bill) 01:59, 28 August 2011 (UTC)

Okay! It is a lot easier to manage references (and citations) with {{Harv}}. I am also a strong advocate of pulling bibliographic detail out of the text (which makes both the text and the bibliogrpahic detail easier to read and edit) and putting it into a separate References section (which makes it easier to check and groom the references). Also, "named refs" are not congenial for specific citation (e.g., page numbers and such). Fortunately, this article is still small enough that it won't be difficult to convert. I'll try to get to it sooner than later. - J. Johnson (JJ) (talk) 19:31, 28 August 2011 (UTC)
Yikes! You're running well ahead of me!
Several details to sort out. First, I would urge use of {{citation}} templates rather than the {{cite xxx}} family. Second, I find vertical formating of the templates to be much clearer than stringing everything together horizontally (and am going to do that unless you have a strong objection). Third, do you prefer to go with full names? or last names and initials? I have previously tended toward initials, but am feeling more inclined towards full names (when available). There is also a view of going with the style of the original journal. - J. Johnson (JJ) (talk) 21:37, 29 August 2011 (UTC)
Just a little nagging reminder: are you okay using {{citation}} templates rather than the {{cite xxx}} templates? - J. Johnson (JJ) (talk) 21:23, 31 August 2011 (UTC)

Thoughts on article upgrade

Following up on J. Johnson's thoughts with a first order summary of what might be done. Feel free to supplement or revise this list:

1- The evolving understanding including Steens, Picture Gorge et al.

Tie in Steens, Picture Gorge & other coeval basalt flows (using literature) -

  • Update map to show flow overlap into Nevada, California & Idaho
    example map update
  • include Yellowstone hotspot discussion
  • Incorporate dike/dyke maps
  • Camp & Ross discuss, "The Oregon High Lava Plains represents is a complementary system of propagating rhyolite eruptions contemporaneous with the Snake River Plain propagation since �10 Ma, but in an opposite direction." Incorporate...
  • Include timeline showing flows in sequence
  • Tie in with Picture Gorge Basalt flows & Fort Rock - Heiken, G. H. (1981). "Geological Survey Circular 838 - Guides to Some Volcanic Terrances in Washington, Idaho, Oregon, and Northern California - A Field Trip to The Maar Volcanoes of the Fort Rock - Christmas Lake Valley Basin, Oregon". United States Geological Survey. Retrieved 2011-08-28. {{cite journal}}: Cite journal requires |journal= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)

2 - Stratigraphy

Sort out the Ma sequence to the most recent dating/thinking

3 - LIP Context

Put into context as a large igneous province

  • Address the controversy about creation
  • Compare to and contrast with comparable traps (e.g., Deccan and Siberian)

4 - Columbia Gorge & west

Tie in with the Columbia Gorge

5 - Sources

Possible references and resources:

A trailing "✗" indicates that a search for a readily accessible copy (such as a pdf) was negative.

A B

  • Adams, David C.; Humphreys, Eugene D. (2010), "New constraints on the properties of the Yellowstone mantle plume from P and S wave attenuation tomography", Journal of Geophysical Research, 115 (B12311): 1–18, doi:10.1029/2009JB006864, ISSN 0148-0227 ✗
  • Baksi, Ajoy K. (2004), "Ages of the Steens and Columbia River flood basalts and their relationship to extension related calc-alkalic volcanism in eastern Oregon: Discussion", GSA Bulletin, 116: 247–226, doi:10.1130/B25310.1 ✗
See also Baksi, 2006, Discussion
  • Baksi, Ajoy K. (2010), "Comment to "Distribution and geochronology of the Oregon Plateau (U.S.A.) flood basalt volcanism: The Steens Basalt Revisited" by M.E. Brueseke et al.", Journal of Volcanology and Geothermal Research, 196: 134–138, doi:10.1016/j.jvolgeores.2010.04.007
  • Bjornstad, Bruce N.; Babcok, R. Scott; Last, George V. (2007), "Flood basalts and Ice Age floods: Repeated late Cenozoic cataclysms of southeastern Washington", in Stelling, Peter L.; Tucker, David S. (eds.), GSA Field Guide 9: Floods, Faults, and Fire: Geological Field Trips in Washington State and Southwest British Columbia, pp. 209–255, doi:10.1130/2007.fld009(10), ISBN 978-0-8137-0009-0 ✗
  • Bondre, Ninad R.; Hart, William K. (2008), "Morphological and textural diversity of the Steens Basalt lava flows, Southeastern Oregon, USA: implications for emplacement style and nature of eruptive episode", Bulletin of Volcanology, 70 (8): 999–1019, doi:10.1007/s00445-007-0182-x, ISSN 0258-8900 ✗
  • Brown, Kyle B.; McIntosh, Jennifer C.; Baker, Victor R. (2010), "Isotopically‐depleted late Pleistocene groundwater in Columbia River Basalt aquifers: Evidence for recharge of glacial Lake Missoula floodwaters?", Geophysical Research Letters, 37 (L21402), doi:10.1029/2010GL044992, 2010 {{citation}}: |first4= missing |last4= (help); Check |doi= value (help); Missing pipe in: |first4= (help)CS1 maint: numeric names: authors list (link) ✗

C - E

  • Coe, Robert S.; Stock, Greg M.; Lyons, John J.; Beitler, Brenda; Bowen, Gabriel J. (2005), "Yellowstone hotspot volcanism in California? A paleomagnetic test of the Lovejoy flood basalt hypothesis", Geology, 33 (9): 697–700, doi:10.1130/G21733.1, ISSN 0091-7613 ✗
  • Dodson, Allen; Kennedy, B. Mack; DePaolo, Donald J. (1997), "Helium and neon isotopes in the Imnaha Basalt, Columbia River Basalt Group: Evidence for a Yellowstone plume source", Earth and Planetary Science Letters, 50 (3–4): 443–451 ✗
  • Durand, Sedelia Rodriguez; Sen, Gautum (2004), "Preeruption history of the Grande Ronde Formation lavas, Columbia River Basalt Group, American Northwest: Evidence from phenocrysts", Geology, 32 (4): 293–296, doi:10.1130/G20109.1 ✗

F - H

Picture Gorge Basalt photo
Picture Gorge Basalt photo
  • Hartley, M. E.; Thordarson, T. (2009), "Melt segregations in a Columbia River Basalt lava flow: A possible mechanism for the formation of highly evolved mafic magmas", Lithos, 112 (3–4): 434–446, doi:10.1016/j.lithos.2009.04.003 ✗
A document was found, but haven't figured out the url.
  • Hooper, P. R.; Conrey, R. M. (1989), "A model for the tectonic setting of the Columbia River basalt eruptions", in Reidel, S. P.; Hooper, P. R. (eds.), Volcanism and Tectonicism in the Columbia River Flood-Basalts Province, vol. Special Paper 239, Geological Society of America, pp. 293–306

I-J

  • Jarboe, Nicholas A.; Coe, Robert; Glen, Jonathan M.G. (2011), "Evidence from lava flows for complex polarity transitions: the new composite Steens Mountain reversal record", Geophysical Journal International, 186 (2): 580–602, doi:10.1111/j.1365-246X.2011.05086.x ✗
  • Jarboe, N. A.; Coe, R. S.; Renne, P. R.; Glen, J. M. G.; Mankinen, E. A. (2008), "Quickly erupted volcanic sections of the Steens Basalt, Columbia River Basalt Group: Secular variation, tectonic rotation, and the Steens Mountain reversal", Geochemistry Geophysics Geosystems, 9 (Q11010), doi:10.1029/2008GC002067 ✗

K - R

  • Peterson, Curt D.; Minor, Rick; Peterson, Gary L.; Gates, Edward B. (2011), "Pre-and post-Missoula flood geomorphology of the Pre-Holocene ancestral Columbia River Valley in the Portland forearc basin, Oregon and Washington, USA", Geomorphology, 129 (3–4): 276–293, doi:10.1016/j.geomorph.2011.02.022 ✗
  • Reidel, Stephen (2006), "Comment on Philpotts and Philpotts (2005): Crystal-mush compaction in the Cohassett flood-basalt flow, Hanford, Washington", Journal of Volcanology and Geothermal Research, 152 (1–2): 189–193, doi:10.1016/j.jvolgeores.2005.11.001 ✗

S-Z

  • Walker, George P.L.; Cañón-Tapia, Edgardo; Herrero-Bervera, Emilio (1999), "Origin of vesicle layering and double imbrication by endogenous growth in the Birkett basalt flow �Columbia river plateau", Journal of Volcanology and Geothermal Research, 88 (1–2): 15–28, doi:10.1016/S0377-0273(98)00112-7, ISSN 0377-0273 {{citation}}: replacement character in |title= at position 99 (help) ✗

Unfiled

  • Egger, Anne E. and Elizabeth L. Miller; Evolution of the northwestern margin of the Basin and Range: The geology and extensional history of the Warner Range and environs, northeastern California; Geosphere, June 1, 2011, v. 7, no. 3, p. 756-773
  • Camp, V. E.; Hanan, B. B. (June 2008), "A plume-triggered delamination origin for the Columbia River Basalt Group" (PDF), Geosphere, 4 (3): 480–495, doi:10.1130/GES00175.1
  • Lerch, Derek William, Elizabeth Miller, Michael McWilliams and Joseph Colgan; Tectonic and magmatic evolution of the northwestern Basin and Range and its transition to unextended volcanic plateaus: Black Rock Range, Nevada; Geological Society of America Bulletin, March 1, 2008, v. 120, no. 3-4, p. 300-311
  • Kamenov, George D., James A. Saunders, Willis E. Hames and Derick L. Unger; MAFIC MAGMAS AS SOURCES FOR GOLD IN MIDDLE MIOCENE EPITHERMAL DEPOSITS OF THE NORTHERN GREAT BASIN, UNITED STATES: EVIDENCE FROM Pb ISOTOPE COMPOSITIONS OF NATIVE GOLD; Economic Geology, November 1, 2007, v. 102, no. 7, p. 1191-1195

6 - Good Article Criteria

Review against good article criteria

Other comments appreciated - Williamborg (Bill) 15:17, 28 August 2011 (UTC)

Notes & comments

I think there should be more connections to the broader context. E.g., the Yellowstone hotspot (a large, related topic, though the article is deplorable) and other Large igneous provinces, perhaps the Deccan and Siberian Traps specifically. These flows are also central to the scenic attraction of the Columbia Gorge (which has a deplorable Geology section)), and various outcrops on the Oregon coast (which a large population would find of interest). Ah, so much to do! - J. Johnson (JJ) (talk) 19:53, 28 August 2011 (UTC)
Incorporated your thoughts into the above list, which i'll use as a check list... Williamborg (Bill) 23:55, 28 August 2011 (UTC)
Agree there are better maps. The problem is finding one that is prepared with USG funds or is otherwise in the public domain. Like your suggested map, but would need to find it or recreate it...
It can be a bit of a hassle, but many scientists are willing to contribute their images. I suspect Vic Camp would be willing if he was asked nicely. (It is so gratifying to have images even better than what the journal published. And the small hassle can be deemed character building.) - J. Johnson (JJ) (talk) 20:53, 2 September 2011 (UTC)
Actually used strikeout only to indicate I've attempted to incorporate it into the article. Quite a bit of work to be done though... thanks for the further recommendations - still quite a ways to go - Williamborg (Bill) 01:15, 31 August 2011 (UTC)
Ah, as in "done". You might find {{done-t}}, or even {{working}}, useful. - J. Johnson (JJ) (talk) 18:53, 31 August 2011 (UTC)

References

  1. ^ Small articles that have a single main source may still be adequately referenced without the use of inline citations. Inline citations may not be required for some articles; the criteria name the only six types of material that require inline citations.
  2. ^ Articles on controversial topics can be both neutral and stable, but this is only ensured if regular editors make scrupulous efforts to keep the article well-referenced. Note that neutrality does not mean that all points of view are covered equally: instead no point of view should be given undue weight.

Work area

Contents moved to References section in article. - J. Johnson (JJ) (talk) 00:12, 3 September 2011 (UTC)

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