Are you curious about the world under your feet and its 4,000+ minerals? Our monthly programs offer lots of ways to explore minerals and earth sciences - for everyone from the newly curious to rockhounds, professional mineral scientists, mineral collectors, and long-time enthusiasts. We’re the Mineralogical Society of the District of Columbia. Since 1942, we’ve been meeting at the Smithsonian Museum of Natural History in Washington, DC… and now on Zoom.
One of the reasons that science is dying is the denial factor. Another is the refusal factor, they did not discover it there for it doesn't exist and they are not going to check out any evidence that shows it exist.
This level of detail on the yavapai and matzatzal is stunning. Is it from the new national magnetotelluric survey…combined with gravity and magnetics? Gotta find the source.
This is the deeper minerology of Pegmatites I was looking for. Thankyou so much, great video! I was particularly looking to see the change in chemical composition as a pegmatite cools associated with barren quartz deposition followed by mineralized quartz later, and this was fantastic.
This was an excellent presentation on an extraordinarily complex topic of igneous petrology, lighter on the petrogenesis and heavily on the minerology. Indeed, pegmatites rule!
Virginia asteroid impact crater created Bermuda Islands and Blake Spur! The formation of the Western Plateau of the United States and the Rocky Mountains were created by an asteroid impact in the Great Lakes and an asteroid impact in the Democratic Republic of the Congo in Africa. An asteroid with a diameter of approximately 300 km to 500 km falls in the Democratic Republic of Congo and collides with Earth! The asteroid falls at an angle of 48 degrees and passes through the Earth. As it passes through the Earth's mantle, two donut mantle convection currents occur. One is an underwater mountain range (rift valley, ridge) that extends from the Indian Ocean to the Atlantic Ocean. The second is the Pacific submarine mountain range (oceanic ridge, rift valley). Donut mantle rises due to heat! So, when it meets the crust, the crust separates. The remaining submarine mountains (rift valleys) are caused by two donut mantle convections following the Himalayan asteroid impact. In other words, the asteroid fell into the sea east of South Africa (now Tanzania). As it pierced the Earth and passed through the Ural Mountains, two donut mantle convection currents occurred. The angle fell at an angle. The first donut mantle convection created underwater landforms from the Australian South Sea, underwater rift valleys (undersea mountain ranges), and from the Philippine Sea to New Zealand. The second donut mantle convection gave rise to Arctic ocean ridges and rift valleys. In other words, two giant asteroids will fall and the continent will split (split)! Other large asteroid impacts have pulled or stretched convection currents in the otherwise circular donut mantle, causing the African continent to become uncircular! For reference, the primary vortex (donut mantle convection) of the asteroid that fell in the Democratic Republic of Congo, Africa, was cut off by the asteroid impact in the Himalayas. The tip of the cut donut mantle rose to become the island of Iceland. (donut = doughnut) *If the asteroid is about 100 kilometers in diameter, it has a core of its own. That's why doughnut mantle convection occurs twice. Once as the outer shell is shed, and twice as the core travels through the mantle! The Democratic Republic of Congo asteroid impacted Earth at an inclination of about 48 degrees. So it didn't hit the Earth's outer core! ☄☄🤔🤔😎🌠
Do you have an email or link that I could send you photos of an extremely unusual “rock” that I found in the vicinity of Culpepper, Virginia? I work in the construction field. I found this rock on the surface beside a building that had been built within the past two years during my lunch break. It caught my eye because it absolutely looked out of place from a distance. It weighs 35. lbs. It roughly measures 7”x 5.5”x 14”. It is strongly magnetic at three areas along its surface. Has dark green and black glassy looking structures attached to the non-magnetic parts. It is obviously very old an very oxidized. Could this possibly be part of the Chesapeake Bay meteorite strike? I would love to know more about it and how it came to be. I would greatly appreciate any direction or feedback. Thank you.
Virginia asteroid impact crater created Bermuda Islands and Blake Spur! The formation of the Western Plateau of the United States and the Rocky Mountains were created by an asteroid impact in the Great Lakes and an asteroid impact in the Democratic Republic of the Congo in Africa.
An asteroid with a diameter of approximately 300 km to 500 km falls in the Democratic Republic of Congo and collides with Earth! The asteroid falls at an angle of 48 degrees and passes through the Earth. As it passes through the Earth's mantle, two donut mantle convection currents occur. One is an underwater mountain range (rift valley, ridge) that extends from the Indian Ocean to the Atlantic Ocean. The second is the Pacific submarine mountain range (oceanic ridge, rift valley). Donut mantle rises due to heat! So, when it meets the crust, the crust separates. The remaining submarine mountains (rift valleys) are caused by two donut mantle convections following the Himalayan asteroid impact. In other words, the asteroid fell into the sea east of South Africa (now Tanzania). As it pierced the Earth and passed through the Ural Mountains, two donut mantle convection currents occurred. The angle fell at an angle. The first donut mantle convection created underwater landforms from the Australian South Sea, underwater rift valleys (undersea mountain ranges), and from the Philippine Sea to New Zealand. The second donut mantle convection gave rise to Arctic ocean ridges and rift valleys. In other words, two giant asteroids will fall and the continent will split (split)! Other large asteroid impacts have pulled or stretched convection currents in the otherwise circular donut mantle, causing the African continent to become uncircular! For reference, the primary vortex (donut mantle convection) of the asteroid that fell in the Democratic Republic of Congo, Africa, was cut off by the asteroid impact in the Himalayas. The tip of the cut donut mantle rose to become the island of Iceland. (donut = doughnut) *If the asteroid is about 100 kilometers in diameter, it has a core of its own. That's why doughnut mantle convection occurs twice. Once as the outer shell is shed, and twice as the core travels through the mantle! The Democratic Republic of Congo asteroid impacted Earth at an inclination of about 48 degrees. So it didn't hit the Earth's outer core! ☄☄
This looks like such a good story or fact, but I can not listen to this guy he's so boring to listen to, I got a few minutes in, and I was blanking out with bordem.
I'll make art work for this guy, for free. He provides the canvas, any size. I have tons of paint and brushes. Please, let him know. I can make anything.
Very interesting but I had difficulty locating the cursor/pointer so did not find it easy to follow. Suggest using a larger cursor for future presentations. Thank you.
I followed Great Lakes geology the 40 years I lived in Michigan, then started learning about the PNW the last 4 years or so with Nick Zentner. I grew up out there. I've vacationed on the Outer Banks the last 10 years, so I find your presentation fascinating. You're kind of the J. Harlen Bretz of the Chesapeake, only with better and more technology. Thank you.
Its fascinating that aspects of this research are related to the types of water... and did I hear something about clasts being found together, some containing fresh water and some salt water? I know that these structures are accepted as extraterrestrial impacts, but isn't it odd how many of the structures are found at or near the boundary of continental shelf? Chicxulub, but also Nadir Crater (another dated to the K/T boundary) on the Guinea Plateau...along the east coast of North America are Tom's Canyon crater, Chesapeake crater, and Montagnais crater. Then there is the Shiva crater, another dated to the K/T boundary, also at a boundary of a continent. In fact, the K/T boundary has many structures dated in the literature to the K/T boundary based on stratigraphic layers or radiometric dating (with varying degrees of certainty): the Boltysh crater (Ukraine), Tefe River Structure (Brazil), Silverpit Crater (North Sea), Dumas Magnetic Anomaly (Canada), Jebel Hadid Structure (Libya), Tin Bider (Algeria), Kara/Ust-Kara twin structure (Russia), Omeonga Structure (Congo), and the Manson impact structure (US). Some of these are refuted, but some are not. While they are not all at the boundaries of continents, there is a higher frequency of these structures at "relevant" locations than would be expected from a random scatter. Notably, the bolide events at [29:13] is scattered as would be expected. But the map just before at [28:41] of impact locations are highly clustered. While this can be refuted somewhat by "lack of data", the two would be expected to resemble one another if impact structures truly are impact structures. Of course, the structures exist; but their clustering is strongly suggestive of unrecognized geological processes. For example, West and East Clearwater Lake Craters were long thought to be "twin impacts" from a single object breaking up in the atmosphere, until they were dated to ~470Ma for Clearwater East and ~286Ma for Clearwater West, and thus their proximity was written off as purely coincidence in spite of calculations in literature showing random chance could induce such an outcome once in hundreds of millions of years, because regardless of probability, "it had happened." But geological processes can repeat at the same general locations and in fact are more likely to do so once the "seal is broken" so they are more inclined to lend themselves to repeating proximal structures across longer time scales. Furthermore, isn't it odd how the structures along the coast tend to be proximal to corners of continental shelf where it bends? Nadir crater is out on the far edge of the Guinea plateau sticking out from Africa into the Atlantic ocean. Montagnais is at a bend as well, while Tom's Canyon and Chesapeake Bay are somewhat distal but still near a bend in the continental shelf. Almost as if they relate to the breaking up of the continents instead and formed geologically and only resemble impact structures. It would not be the first time science has misclassified an entire group of structures. For example, Eozoön canadense was classified as a life form--so much so that its name means "dawn animal of Canada"--as a gigantic foraminifera, only to later be recognized as a geological formation. This was not the first nor will it be the last time an entire group of observations were studied and discussed and described falsely in literature extensively. Whether something is actually true is purely a matter of if it is true or not, and is not related in any way to the widespread acceptance of a proposed truth. We could fill the Earth with stacks of paper of endless literature proclaiming a falsehood to be true, but still it would not become true. I would strongly suggest revisiting the question of if this is actually the result of an extraterrestrial impact and what possible ways Earth itself could induce such structures.
Fascinating. Love geology. Didn’t know there were different types of craters or anything about this one. Its story along with your bio information shows the *impact* one sincere, persistent scientist can make on our human fund of knowledge. Thank you for that, and blessings.
Iron mountain unit, Ingalls ophiolite complex (middle to late Jurassic. Washington state. Got a piece of it from a fault line in my hand. Slicken lines included, very nice sheen.
could this of triggered the mud flood? if these areas were under water for a long period we wouldnt have the plant and animal life we do... whatever happened during this time period was fast, washed over everything for a hundred years or so... then a long period of calm after a quick freeze... after water/ice/mud receded.
How do you report what I think is the biggest discovery of all time. I'm trying to be respectful to the science community and don't want to just put it on the internet. I have a modern day gallaya story you can see it and measure it yourself and it changes everything would wide. Please please someone help me . I lost my right eye and now see different things that stand out on maps now and it all right in front of us all and it is mind blowing. I saying that Mars and earth and our moon got together and you can see it once I point it out. There's more than 20 places that prove it. I have called nasa over and over. But just get told thats not what I do is the answer I get from all of them. Someone please help me with this I have been living with it for 3 years now.
Just because of one guy's dedication we find things out. This tells a very good story about human nature. If we think things are a certain way it is very difficult to change people's mind. Like the epic of Gilgamesh and Noah's ark and the Burkle crater. Same thing.
Popigai and Cheasapeake impacts are within a couple million years of the formation of antarctic ice cap. Could these impacts have modified the global ocean currents and help create the circumantactic current?
What about plate tectonics. If this impactor took place 35m years ago, where was the North American plate in relation to current day? It wouldn't be Where it is now unlike the Saginaw impactor which hit the Laurentide ice sheet and formed the crater at Saginaw Bay about 20k years ago. Therefore the current geography doesn't work. Likely that area was a shallow sea or part of the Atlantic seafloor, similar to the sand hills and Piedmont region of North Carolina at that time as well. Thoughts?
Good question I would guess little has changed locally for the most part as its a passive margin so the main shift locally is sea floor spreading with most of the complex geology being out west. For those tektites out in the Caribbean however... based on the observations of sea floor slabs in seismic tomography data is going to be a more complex picture since the Caribbean seems to more or less be the only somewhat metaphorical windshield splatter from North America and South America barreling through what seems to have been a former oceanic arc. While North America's passage was largely done by this part of the Eocene South America would only have been just starting to smash its way through as that largely happened in the Miocene.
Thank you ! A couple of things , your doubters reminded me of an old saying "if it's not my idea it's a bad idea" , also , I think we're in agreement about the Smithsonian , I used to skip school in the mid sixties to hitch-hike 15 miles to the Museum about once a month.
All bodies at our orbit are charged with 100 volts per square meter. Electrons repel. We have this force field that prevents impact, but the problem is the 1 mile wide lightning between these bodies. All impacts are Electric discharge machining. All the craters on the moon could be made in minutes, not millions of years.
I remember that newspaper series. Also drove out to the area you were drilling on the eastern shore some 20 years ago because it was interesting. Shame I couldn't find anyone to talk with at the time. Time myself I would discover the research paper one day. That day is. Today
I'll work at the mine. I can dig and chisel anything from anywhere. If y'all need help that way. No joke. I also am retired and have 6yrs plumbing experience; doing that to stay active. Raised in Michigan, the black fly and the mosquito are old friends.
