This is an archive of CompuServe forum messages from 1985 to 1995, as saved in transcripts by John Foust.
Search Results (4,845 messages)
Hi, John– Thanks, I have added you to our list of rockhound club E-mail contacts. I have been collecting snailmail addresses for the clubs also; I am not sure why, maybe to allow re-establishing of contact if your E-address changes. If you have a snail-address handy for the club, may…
Hi, Kamron– >> The is no way for Antarctica to move in any direction without sliding the shift faults into an non aligned condition along some of the Mid Ocean Ridges. What specifically are referring to when you say the SW Indian ridge? The southwest Indian ridge is the spreading…
Hi, Rod– Listing the E-address in the club roster with the person's snailmail address would alert someone seeking that specific person to an alternate route. Listing the E-addresses in a separate list lets someone looking for online contacts find them more easily, and makes others more aware there is someone…
Jon What I was wondering is how do the thicknesses of the Paleozoic and Mesozoic layers similar on each side of the Appalachian Mtns and the West African layers compare?
Welcome, new rockhounds!
Message #173942
Hello! We in this forum section include a wide variety of earth science interests, from professional to novice hobbyists. Here you will find collectors of minerals, fossils, rocks, and so on, with lapidaries, geologists, teachers, and more. We have been trading information and specimens. We are looking for new participants!…
Rock Clubs On-Line
Message #173775
Hi Doug, Regarding listing E-mail addresses on club rosters, would you recommend a separate listing of all those members that are "on line"? Or should the E-mail address be placed right along with the members snail mail address? The Fluorescent Mineral Society's '95 Roster will be coming out in the…
David >> I think the earth would be pulled from its orbit.
Kamron, >> Are there also granitic intrusions in the midst of the thrust faulting?
10 times the tidal force currently produced by the sun on the earth does not look strong to me. The tidal pull of the sun is much less than the tidal pull of the moon on the earth. Rock tides can be demonstrated (barely, by a SMALL displacement) but have…
Sure! I belong to the "Rhode Island Mineral Hunters, Inc." which is the primary rockhound club for the state of Rhode Island. In fact, I believe it is the only organized club in the state that I am aware of. We are members of EFMLS and AFMS. If you need…
Michael, The article of which I spoke, which was by Lance Kearns in the magazine Rocks and Minerals, had the telephone number of the Morehead Mine. It probably also gave directions to this fee collecting site. I am looking forward again to getting down to that corner of Virginia myself…
Greetings David >> I have been thinking about your catastrophe model.The tidal force of the sun right now is too weak to form continents, right. Using inverse cube law (applicable to tidal forces), the tidal strength of your object is only 1.25 times the current tidal force of the sun.…
Hello Jon Are there also granitic intrusions in the midst of the thrust faulting? How about the periodic crustal layers on each side of the Orogeny where it levels out…are they very different?
Thank you for the nice welcome. My father asked me to post this thread. He is an avid rockhound. He has me look for any interesting postings.
Ron, PMJI, I flew helicopters with the U.S. Antarctic Research Program for three years. Although I'm not a research scientist (my B.S. is Aero Eng.), I did pick up a bit from the investigators on the ice. Also, if you can specify a field, I might be able to put…
Hi, Kameron, (If anyone else receives this message, please repost for Kameron and let me know that my software is still wonky). I have been thinking about your catastrophe model. The one with an object 10 solar masses about 2 AU away. It won't explain the formation of continents. The…
Kamron, >> If the east and west sides of the App. Mts. were different sections of crust it would go 15 miles deep or more..I would expect to see remnants of the crack…and how did they get welded together so well?
Doug, Disclaimer: I'm referring mainly to a basic geology/paleontology text dated 1989, so new info like your SA article may have changed some of this. But here's what this ref. says about the Appalachians: 1) In the Ordovician Period, Laurentia and Baltica were moving together, with a subduction zone in…
Hi Paul, Believe it or not (I sound like a TV program) I took the liberty of putting down your name even before you responded . I knew it wouldn't be the same with out you! I will get in contact with everyone once I think I know what I…
Doug >>He listed some fossil-bearing formations that seem to bear out my "prediction", provided they are old enough; it seems there is better fossil evidence for some coastal exchanges between N. America and Europe. It seems we traded Scotland for coast from east Newfoundland south to maybe RI; they tried…
Doug >>This underlayer is not the seafloor from oceans surrounding colliding continents – I am talking about _directly_ under the collision, where the lithosphere is also converging. Since the lithosphere is comparable in mass to the continents, and since it is denser and closer to the "escape hatch", it would…
Greetings Don I am wondering about some of the other Plateau's out in the pacific that have larger areas and vertical sides, like the Manthiki, Ongtong Java, Solomon and others. Has there been drilling in these to determine if there is a geological crust there also like in the New…
>> I am not familiar with much of any river sedimentation-rate studies. Why do you call them "weir[d] studies"?
Hello Doug Oh I feel like I may be close here.. >> That is what I said, there may be sliding along the southwest Indian ridge, which in any case is not spreading fast, and/or sliding along those angled transform faults across that ridge. The Antarctic plate appears to me…
>>>The Rocky Mountains formed after the Atlantic opened; I think the Andes did too, as did Japan and all those Pacific islands that have volcanic origins.
Hi, Brian– Welcome to the forum/section! Why would anyone want to cross the river to gamble in Laughlin? You said the gambling was for money, not rocks, right? –Doug
Hi, Don– Thanks for the info; I was running out of ammo. –Doug
Hi, Jon– In Old Red Sandstone, I am pleased to have a name for proto-N.America + proto-Europe (Laurentia+Baltica), since I gather they were together for a long time before joining up with Pangaea. The Jan. 1995 Scientific American has a cover story proposing that Laurentia rifted away from proto-S.America ~550…
Hi, Howard– No ruckus, just an amateur (me) wondering if his understanding was outdated (it has been known to happen). –Doug
Hi, Lanny– I wrote to a Dr. Simmons in New Orleans asking about a "MINCAT" before, and never got an answer, thus sort of forgot the matter. I was hoping it was the mineral database we have been seeking. I wonder if this is the same MINCAT that you mentioned?…
Hi, Al– I obviously have no problems with meteoritophiles "meeting" here until a separate section, forum, newsgroup, or mail-list is warranted. Are those dozen or so all on CIS? While the handful of Fluor. Min. Soc. members on-line were almost all on CIS a year ago, now a number have…
Hi, Joseph– Thanks for the info; even "I dunno" can be a meaningful answer. Actually the first part about the Sikhote-Alin fall seems to have answered my real question, which should have been something like this: While meteorites big enough to retain hypersonic speeds at impact will produce craters whose…
Hi, Kamron– >> Get cars and line them up with spaces between them in neutral with the break off. now push the last one slowly forward at one inch a minute If we are moving at one inch a minute, it might take mountains on wheels to produce the big…
Hi, Kamron– Since ocean floors away from continents should collect sediments more slowly, and because the oldest, deepest seafloors will generally have had their carbonates redissolved, I expect thin layers for given geologic periods compared to continental sediments. I am not familiar with much of any river sedimentation-rate studies. Why…
Hi, Kamron– >> Looking at the point at the top of the Antarctic plate it has a spreading rate along each side..picture the triangle …it would really move sort of straight down towards the pole here as a result of the two motions leaving each of the sides motion in…
Al- I'd be interested in being part of the group you and Joseph are trying to form. "How could I not be interested", I ask myself. A year ago I didn't know the difference between a Camel Donga and a grape. Now I know that (a LOT of grapes are…
Welcome Michael This is an odd theory that some volcanoes are deep petroleum reservoirs that ignite and burn using the oxygen content in the earth. It might be interesting to investigate the smoke bellowing from volcanoes and see if it contains similar composition to burning petroleum and rock. I have…
#Volcanic Formation Rules
Message #173321
Hi, I'm involved in a world-building project in the SFLIT Forum (section 19) and we've gotten into a discussion concerning volcanoes. What we'd like to know is how much current theory about volcano formation, behavior, and impact on a planetary system has been influenced by the data collected from Martian,…
Ron, Ed's suggestions for searching other forums sounds good to me. I'm afraid I don't personally know much about Antarctica, or know anyone who studies it. Keep looking for responses in this forum, as I've found there are lots of good responses to my questions, but they may take a…
Always great to see another Geographer! Best of luck to him. If he hasn't checked the MAPFORUM, there's always some interesting cartographic chat over there. Most Physical Geography postings are in the various sections here; the best Environmental and Human Geography discussions are over in EARTH. The thread subjects often…
#Antarctica Science
Message #173246
Howard I have been reviewing messages on CompuServe and thought you may be able to help me. My son, Christopher, is completing his senior paper in Geography and wants to study Antarctica. He would like to correspond with scientists thru email as a part of his study. First, does anyone…
Internet
Message #173243
There is a new mining newsgroup on the internet. It is alt.mining.recreational. I don't think the procedure for creating it was followed exactly and the result may be that most sites aren't carrying it. I had to ask my ISP administrator to start carrying it. It seems like it is…
Jon >> To see where things have been _happening_, you have to look to the west of the Americas, and to the east coasts of Asia and Africa, and the northern and eastern coasts of Australia. IOW, places where plates are moving along each other, or are being subducted. The…
>> I dimly remember something about some seafloor-rock trapped in the Appalachians. If there are pre-Carbonifereous fossils east of the Appalachians, I expect them to match African counterparts better than other N. American.
I am an amateur who has been following earthquakes for about 40 years. Notice that the bigger ones tend to come in cluster – often far apart. Back when US was still going to the moon, there was an experiment that caused the moon to "ring". Got to thinking about…
#Rock show Mar. 18 & 19
Message #173015
The Silvery Colorado River Rock Club is putting on its 28th anniversary rock and gem show March 18 & 19 at Bullhead City Jr. High school in beautiful Bullhead City, Arizona. Bullhead City is just across the Colorado river from Laughlin, Nevada. There will be 40+ showcases, a silent auction…
>> No reason why they shouldn't fit together…all they've been doing is moving apart since the split, with a certain amount of erosion. Actually, the edges of the continental shelves (under water) of the continents are a better fit than the shorelines.> The "additional coast" I was talking about was…
I have seen an idealised rendering of layers along the deepest NW Pacific Trenches. I would expect a dense to fine stratification. What's your take on them? I remember reading of weir studies on the deposition rate of various rivers it of earth. The measurements of the time it took…
Doug >>You cannot mean the 3 plates meeting at the mid-oceanic ridges in the Indian Ocean since they are diverging, not converging; I figure you are worried about how Africa is almost surrounded by spreading ridges.>Imagine two plates are being pulled apart, but there is a third plate between them…
>> I see continental collisions as resembling car collisions. A light impact just crumples the bumper (shoves the sediments and older-rifting detritus on from the continental margins up on top). A heavier impact crumples the whole front end of the car (including the continental craton). > Granite is no more…
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