Conglomerate (geology)

conglomerate is a coarse-grained clastic sedimentary rock that is composed of a substantial fraction of rounded to sub-angular gravel sized clasts for example granules pebbles cobbles and boulders larger than 2 millimeters in diameter conglomerates formed by the consolidation and lithification of gravel conglomerates typically contain finer grained sediment for example either sand silt clay or combination of them called matrix by geologists filling their interstices and are often cemented by calcium carbonate iron oxide silica or hardened clay the size and composition of the gravel size fraction of a conglomerate may or may not vary in composition sorting and […]

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The Whole Saga of the Supercontinents

By now, you’ve surely picked up on the idea that the study of natural history is basically the study of how the world has changed. The study of how we all got here. And of course, the world continues to change, all the time. I mean, literally. I’m not just talking about how life adapts, or how the climate is changing. I mean the planet itself, as an object, is in a constant state of flux — because the ground beneath your feet is always moving. So, the place where you are right now was not always … there. For […]

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Can We Get DNA From Fossils?

More than 120 million years ago, in a hot, conifer-filled forest in what’s now India, a small insect made a terrible mistake. While searching for a tasty meal of pine pollen it wandered one step too far, only to find itself trapped in sticky, yellow resin. Tired from its flight, this small weevil was quickly entombed in the fragrant yellow material, which eventually became the substance we know today as Amber. Then, in 1993, scientists cracked open this very same piece of amber. They took the body of the weevil, and they sampled its DNA. Now, this is not a […]

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A Brief Introduction to Minerals

Hi, everyone in this video. We’re going to be talking about Minerals, so let’s get started What are minerals anyway well in the simplest sense of the term minerals are the building blocks of rocks? Here’s a rock. This is a piece of the igneous rock called granite if you look carefully at this chunk of granite You’ll see all sorts of speckles of Gray and white and black and if you in You’ll see that these are crystals mineral crystals this particular piece granite has the mineral quartz Biotite Mica and Plagioclase feldspar We’ll study these more detail later […]

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One of the Worst Man-Made Disasters in History

NARRATOR: 1957. 70 miles from Venice, amid the cliffs and gorges of Italy’s Vajont River Valley, work begins on the Vajont Hydroelectric Dam. Crucial to the dam’s operation is a vast reservoir that can hold 44 billion gallons of water. Ever since the filling of the reservoir in early 1960, enormous cracks have begun appearing on Mount Toc, above the dam. LUCIA FILIPPIN (IN ITALIAN): People could sense that something big was about to happen because the ground was moving and suddenly, new cracks would appear, very deep and very large. NARRATOR: Then, in late 1960, another warning sign. This […]

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Scientists in the Wild: Dr. Julie Libarkin, Geologist

Oh, that’s a good question. So I’m a geologist and for many years I studied mountains and high plateaus like the Tibetan Plateau or the Colorado Plateau and how they formed. And now I study what I call Geocognition which is the intersection between cognitive science, how the brain works, and geological sciences. So really how people perceive, understand and interact with the planet. So a geologist is someone who studies the earth. And you can actually think a little more broadly about an earth scientist. So a geologist would be someone who studies the solid earth. Sort of the […]

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Physical Geology – Arbuckle Mountains – Field Trip, Part 2

>>Dr. Doug Elmore: This our second stop on our field trip to the Arbuckle Mountains, and here we have an outcrop of the Collins Ranch conglomerate you can see it right here. This is the conglomerate that was sitting on top of the angular unconformity at our last stop, the first stop on the field trip. So what I’d like to do at this stop is to talk about how this particular rock formed. And to do that we first need to describe the characteristics of this rock. So I’m going ask the students to help me with that so […]

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How Bespoke Italian Leather Shoes Are Made

I think the passion, you really need it to create something on a particular level. You need to give everything from yourself in there and that’s the difference I think. Bespoke means for me, that I discuss really with the client what he wants. You have ideas here, you can see different materials, different models. It’s very important to listen. Nowadays, many people don’t listen anymore. The last is really the copy of your foot on which we create the shoe. But nobody shows you how to make a last, really, so you have to train it by yourself, and […]

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GS 106 Geology Week 2 Video 4

Welcome back to week two and video four we are going to move forwarding into the major volcanic hazards that are associated with volcanic activity um… Now a great website to visit is this volcanoes.usgs.gov. um… it has a great inactive map to look at which you can see here um… shows you all over the united states uh… the different volcanoes, a little watch eye on Kilauea because it is currently active and all sorts of awesome features uh… you can go to different observatories Alaska, Hawaii, Washington, Oregon uh… great website to explore um… and they focus a […]

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Geology of Ohio: Episode Two – Caesars Creek

To start off on this topic I’ll give some background information about this National Park located about five miles east of waynesville Ohio Caesars Creek came into being in 1971 when the Army Corps of Engineers erected a dam to control flooding in the valley the emergency overflow control spillway is where much of the geology of CJ’s Creek can be found the channel exposes prime 445 million year old order vision outcrop with an abundance of fossils but we don’t need again to that just yet first let’s look into the depositional environment and the time of the order […]

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