Volksburgs Posted May 23, 2021 Share Posted May 23, 2021 We went camping last weekend out at Delintment Lake in eastern Oregon. We went to check out the ammonite fossils. It was a great place! Kids loved it. Here are some of our finds. Interesting area because you could dig in one area and it was really loose compacted clay and in another area less than a mile away it was hard slate type material that really needed some work to get it to split. Naturally the slate material had the more robust ammonites. 4 Link to post Share on other sites
ClearLake Posted May 23, 2021 Share Posted May 23, 2021 Very nice! Do you know what age these are? I’m not that familiar with Oregon geology. Link to post Share on other sites
Volksburgs Posted May 24, 2021 Author Share Posted May 24, 2021 1 hour ago, ClearLake said: Very nice! Do you know what age these are? I’m not that familiar with Oregon geology. Thanks! Yes from what I understand it is the middle Jurassic period. Link to post Share on other sites
ClearLake Posted May 24, 2021 Share Posted May 24, 2021 1 minute ago, Volksburgs said: Yes from what I understand it is the middle Jurassic period. Very interesting, thanks. Have to file that away in my memory banks for the next time I am in Oregon (haha, that could be decades from now, who knows!). Jurassic is one of those periods I personally don’t see very often (ever!). Link to post Share on other sites
piranha Posted May 24, 2021 Share Posted May 24, 2021 This monograph will help you ID the ammonites. Imlay, R.W. 1973. Middle Jurassic (Bajocian) Ammonites from Eastern Oregon. United States Geological Survey, Professional Paper, 756:1-100 PDF LINK 1 1 Link to post Share on other sites
Volksburgs Posted May 24, 2021 Author Share Posted May 24, 2021 7 minutes ago, piranha said: This monograph will help you ID the ammonites. Imlay, R.W. 1973. Middle Jurassic (Bajocian) Ammonites from Eastern Oregon. United States Geological Survey, Professional Paper, 756:1-100 PDF LINK Thanks! I will definitely look this over. Link to post Share on other sites
OregonFossil Posted May 24, 2021 Share Posted May 24, 2021 (edited) I am passing through that area on the way to a Rose City Astronomers starparty at the field station further south, do you have GPS for the second location, I'd have an couple of hours I could "hunt"? Or more specific directions, I don't get to that area often. Very nice fossils. I down loaded the PDF, interesting stuff. Edited May 24, 2021 by OregonFossil Link to post Share on other sites
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