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Found 5 results

  1. Shellseeker

    Whoops!

    7 feet at Zolfo makes it very difficult (dangerous) to hunt the Peace River. I just got off the phone with my fossil hunting partner. Likely we'll go Monday trying those shallow spots we marked during season. That is because we are more stubborn than Bighorns. Makes me think back to Tuesday. We tried a location that has produced some miocene finds, but we had been there many previous times, and ignoring small teeth, there were few finds. Might be a croc tooth, but I would not argue if someone said gator. The reason I made this a FossilID thread This fat rooted small tipped dolphin tooth are rare.. My first fragment at 23 mm length and only 50% complete. My friend @jcbshark found an associated group of similar but larger teeth 3 years ago, but I know of no other examples from the US Eastern coast. Requesting examples and comments on fat rooted small dolphin teeth. @Al Dente @MarcoSr @Boesse
  2. Doug Von Gausig

    Fossilized raindrops?

    This dolomite stone was discovered near Chasm Creek, central Arizona. It appears to have the fossilized impressions of raindrops splashing into a fine muddy surface. The stone seems to be dolomitic, as HCl causes a low fizz, unlike typical limestone's more energetic fizzing. Most of the "splashes" have the central "rebound" splash seen in my high-speed imagery of water droplets. That central rebound appears to have been broken off over time. Does my assumption that this is a somehow frozen-in-time rain shower make sense?
  3. Enafter

    Lavernock finds

    Hello Was out fossil hunting at Lavernock this past week. It rained a lot so couldn't stay for very long. I never really take my phone on fossil hunts but will try to get some pictures of the surrounding area next time. Here are some of my favourite finds! 1. Jumble of ichthyosaur bones. 2. Ichthyosaur rib 3. Not really sure, probably ichthyosaur rib 4. Gastropod my sister found I tried prepping the ichthyosaur rib but it didn't go too well. At least its still intact.
  4. PODIGGER

    Holiday Hunt

    Headed back to the Peace River yesterday after a 17 day absence. Water level and flow were a bit higher than I would have liked due to recent rainfall. I just couldn't stay away any longer! When I started the journey to the river the weather was cool and partly cloudy. Half way there I ran into light rain and fog and began to worry I had made a bad choice to make the trip (rain prediction was 50%). When I got to the river I had to prep the kayak under cover as the rain was coming down heavily. It tapered off as I donned my wetsuit and I set out under cloudy skies. Had almost made it to my planned hunting spot when the skies opened again with a downpour that forced me to hug the bank and hide under some low branches. It stopped raining after about 10 minutes and I continued on. After beaching the kayak I made my usual bank inspection. I reached down at one point and pulled up a handful of gravel from a crevice between some roots. Discovered a nice 1" Tiger shark tooth in my hand to start the day! Worked the area for the rest of the morning and pulled up another four tigers and a 1 3/4" partial Meg along with several other misc teeth. At one point a very large vulture landed on a log in the river within 30' of where I was digging. It sat there for about 15 minutes. It was unusual for it to be so close, and made me wonder if it thought I was it's next meal! Later, after it had left I circled over near where it had been sitting to work the area and finally noticed what the vulture was really interested in. There was a dead alligator, about a 10 footer, wedged belly up under an adjacent log. The alligator was covered with flies and bloated so its true size was hard to determine, but I could see it had some big feet with huge claws! Needless to say, I moved a bit away from the area to continue digging. Came up with some mammoth teeth fragments and a vertebra in the afternoon. Vert is 2" x 1 3/4" x 1 1/2". I will post it separately in the Fossil ID section once I have better photos in hopes of a possible id. attached are photos of the best finds of the day. No photo of the alligator as I was afraid I would drop the phone in the river! It also was not very photogenic.
  5. I have a mathematics question that is tangentially related to fossil collecting. How do you figure out the total chance of rain during a collecting trip using the weather service rain predictions (should I bring my umbrella)? Can you give a general formula? Let us say that you are going on a three day trip with the following precipitation chances of measurable rain (chance of rain for any geographical point in forecast area) for each day: Friday 10%; Saturday 20% and Sunday 30%. What is the combined probability, Friday through Sunday, that it will rain at least once? Is rain likely? Assume that chance of rain for any period is independent of each other. I know that the total chance is at least as high as the highest chance for one day: 30%. It is lower than adding 10, 20 and 30 equals 60%. What is the % answer and the general formula? Thanks, John EDIT. I found a website post below with a similar question: There is a 20% chance of rain each day for 5 days; the chance of rain during the whole period is 67%. I did solve the problem correctly before I found website below, I think. Solve the problem by using the chance that it is not going to rain each day in decimal form: .9 x .8 x .7 = .504 or 50.4% chance that it is not going to rain. Therefore there is a 49.6 % chance of rain. Bring an umbrella. https://www.theweatherprediction.com/habyhints/266/ PRECIPITATION PROBABILITY BRAIN TEASER METEOROLOGIST JEFF HABY A broadcast meteorologist gives the following forecast: Monday: 20% chance of rain Tuesday: 20% chance of rain Wednesday: 20% chance of rain Thursday: 20% chance of rain Friday: 20% chance of rain A viewer is having a week long outdoor event that lasts from Monday through Friday. Monday morning the viewer asks the broadcast meteorologist what the chance for rain is for the entire week as a whole. In other words the viewer wants to know what the chance is it will rain on either Monday, Tuesday, Wednesday, Thursday, or Friday. What is the answer? Assume the probability of precipitation (POP) is independent for each day and the forecasted POP does not vary with time. SOLUTION: This situation represents the probability of rain within a 5 day period given at the beginning of the week and assumes each day is an independent probability. Two of the answer choices can be eliminated through applicable logic. It is known the probability of rain during the week is greater than 20% since each day has at least a 20% chance. It is also known the probability can not be 100% because the possibility is clearly evident that it might not rain at all during the week. A probability for this case is solved by multiplying the probability it will not rain each day and subtract this from 100%. The left over value is the chance that is will rain during the week. The chance of no rain each day is 80%. Thus the chance for no rain each day put together is: 0.8 * 0.8 * 0.8 * 0.8 * 0.8 = 0.33 or 33%. Since the chance for no rain is 33%, the chance for rain is 100% - 33% = 67%. (1 - 0.8^5) = 1 - 0.33 = 0.67 * 100% = 67% Thus, there is a 67% chance (or a 2 in 3 chance) that the viewer will have rain sometime during the week.
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