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Thin section 13
This video shows a thin section of a rock largely made up of quartz grains. Images in this resource could be used to practise microscope drawing skills. Try comparing this thin section with the other thin sections shown in ‘Microscopy: metamorphic rocks’ in the resource section of GeoHubLiverpool.
มุมมอง: 2 030

วีดีโอ

Thin section 12
มุมมอง 2.2Kปีที่แล้ว
This is a thin section of a rock largely made up of calcite grains. Images in this resource could be used to practise microscope drawing skills. Try comparing this thin section with the other thin sections shown in ‘Microscopy: metamorphic rocks’ in the resource section of GeoHubLiverpool.
Thin section 9
มุมมอง 3K2 ปีที่แล้ว
This video shows a thin section of a rock made up of quartz, plagioclase feldspar, K-rich feldspar, biotite mica and muscovite mica grains. The properties of the main rock-forming minerals as seen under a polarising light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 11
มุมมอง 3.1K3 ปีที่แล้ว
This video shows a thin section of a rock made of crystals of hornblende, plagioclase feldspar, quartz and garnet. Sphene also occurs as an accessory mineral in the rock. The properties of the main rock-forming minerals as seen under a polarizing light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 10
มุมมอง 3.6K3 ปีที่แล้ว
This video shows a thin section of a rock made of crystals of plagioclase feldspar and pyroxene. Small amounts of amphibole and opaque iron oxides also occur in the rock. The properties of the main rock-forming minerals as seen under a polarizing light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 8
มุมมอง 3.9K3 ปีที่แล้ว
This video shows a thin section of a rock made of crystals of plagioclase feldspar, K-feldspar or orthoclase feldspar and quartz. Small amounts of biotite mica also occur. The properties of the main rock-forming minerals as seen under a polarizing light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 7
มุมมอง 4.9K3 ปีที่แล้ว
This video shows a thin section of a rock largely made up of quartz grains. The properties of the main rock forming minerals as seen under a polarising light microscope are described. Images of this resource could be used to practise microscope drawing skills.
isochronplots7
มุมมอง 3.8K3 ปีที่แล้ว
This video explains radiometric dating using isochron plots.
Scanning electron microscope
มุมมอง 9884 ปีที่แล้ว
This is an introduction to the SEM. It outlines how the SEM works and shows how it can be used to find out more information about different Earth materials.
A cross-bedded sandstone outcrop
มุมมอง 7754 ปีที่แล้ว
Professor John Wheeler from the University of Liverpool visits a sandstone outcrop on The Roaches in the Peak District of England. The sandstone layers show cross bedding and the sandstone layers have been tilted after their formation. John explains why we need to look at outcrops in three dimensions. Visit our website for more geoscience teaching and learning resources: geohubliverpool.org.uk/...
Thin section 6
มุมมอง 8K4 ปีที่แล้ว
This video shows a thin section of a rock made of calcite and which is largely composed of non-skeletal grains. The properties of the main rock-forming minerals as seen under a polarising light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 5
มุมมอง 8K4 ปีที่แล้ว
This video shows a thin section of a rock made of calcite and which is largely composed of skeletal grains (bioclasts). The properties of the main rock-forming minerals as seen under a polarising light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 4
มุมมอง 15K4 ปีที่แล้ว
This video shows a thin section of a rock made of quartz, muscovite mica, biotite mica and garnet. The properties of the main rock-forming minerals as seen under a polarising light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 3
มุมมอง 25K4 ปีที่แล้ว
This video shows a thin section of a rock made of feldspar, olivine and pyroxene. The properties of the main rock-forming minerals as seen under a polarising light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 2
มุมมอง 36K4 ปีที่แล้ว
This is a thin section of a rock made of quartz, feldspar biotite mica and muscovite mica. The properties of the main rock-forming minerals as seen under a polarising light microscope are described. Images in this resource could be used to practise microscope drawing skills.
Thin section 1
มุมมอง 24K4 ปีที่แล้ว
Thin section 1
What is Earth Science?
มุมมอง 1.7K4 ปีที่แล้ว
What is Earth Science?
Earth science at Liverpool
มุมมอง 4584 ปีที่แล้ว
Earth science at Liverpool
The Maske Cell experiment - how bimodal sediments stratify in aeolian ripples and dunes
มุมมอง 2065 ปีที่แล้ว
The Maske Cell experiment - how bimodal sediments stratify in aeolian ripples and dunes
Laboratory experiments to show variety of shells and how they align with the water flow direction
มุมมอง 1765 ปีที่แล้ว
Laboratory experiments to show variety of shells and how they align with the water flow direction
Crater simulation laboratory experiment
มุมมอง 2.4K5 ปีที่แล้ว
Crater simulation laboratory experiment
Laboratory turbidity current demonstration
มุมมอง 1.2K5 ปีที่แล้ว
Laboratory turbidity current demonstration
Flute casts - how to use them as a way-up (younging) direction indicator in sedimentary rocks
มุมมอง 5K5 ปีที่แล้ว
Flute casts - how to use them as a way-up (younging) direction indicator in sedimentary rocks
Cross bedding and how to use it to infer way-up direction in stratigraphic sequences
มุมมอง 4.4K5 ปีที่แล้ว
Cross bedding and how to use it to infer way-up direction in stratigraphic sequences
Tracks and trails as a sedimentary structure that records way-up in rock sequences
มุมมอง 3655 ปีที่แล้ว
Tracks and trails as a sedimentary structure that records way-up in rock sequences
Pseudomorphs - a sedimentary structure to indicate way-up (younging) direction in a rock sequence
มุมมอง 6195 ปีที่แล้ว
Pseudomorphs - a sedimentary structure to indicate way-up (younging) direction in a rock sequence
Mud cracks - a primary sedimentary structure to assess way-up in a stratigraphic sequence
มุมมอง 1.5K5 ปีที่แล้ว
Mud cracks - a primary sedimentary structure to assess way-up in a stratigraphic sequence
Load casts and flame structures as an indicator of way-up in sedimentary rocks
มุมมอง 2K5 ปีที่แล้ว
Load casts and flame structures as an indicator of way-up in sedimentary rocks
Graded bedding and washout to assess the way-up in a stratigraphic sequence
มุมมอง 1.1K5 ปีที่แล้ว
Graded bedding and washout to assess the way-up in a stratigraphic sequence
Burrows as a trace fossil way-up indicator in the rock record
มุมมอง 3545 ปีที่แล้ว
Burrows as a trace fossil way-up indicator in the rock record

ความคิดเห็น

  • @skkkrrrtttskrtskrt1271
    @skkkrrrtttskrtskrt1271 2 หลายเดือนก่อน

    do you always align the strike to the north pole?

  • @khan-ibrahim
    @khan-ibrahim 3 หลายเดือนก่อน

    Nice introduction 👍

  • @MaximumEdits
    @MaximumEdits 5 หลายเดือนก่อน

    Why did the graph start at 350 million years ago? Or in other words, how do you go about determining where a certain sample should start on a specific time scale when this dating technique is suppose to determine how old said sample is? Or am I completely missing something?

    • @geohubliverpool651
      @geohubliverpool651 5 หลายเดือนก่อน

      When you make an isochron plot for a rock of unknown age it will take a sloping line. The slope for a very old rock will be steep and for a recent rock it will be shallow. Measuring the gradaaient of the line tells you how old the rock is. I chose to start 350 million years ago as an example to show you how the slope alters with time. (In the video, the formula used gives you the gradient or slope of the line)

  • @shyam6468
    @shyam6468 6 หลายเดือนก่อน

    In several texts they claim that subduction happens because oceanic crust is more dense than continental crust but that doesn't make any sense yes it is dense but it was still floating over the mantle . So what actually happened at the collision that it got subducted and not before it?

  • @hamzatariq-wj3eh
    @hamzatariq-wj3eh 8 หลายเดือนก่อน

    i have a question how could differenciate in parallel extiction and undulose extiontion bcz one represents that the mineral undergoes deformation while the other just give is the knowlage that the minerla which we are examine is biotite mica

  • @KhanJai-x5q
    @KhanJai-x5q 8 หลายเดือนก่อน

    ❤🎉

    • @KhanJai-x5q
      @KhanJai-x5q 8 หลายเดือนก่อน

      😱🤳💌✋🗣

  • @WillzyFilms
    @WillzyFilms 10 หลายเดือนก่อน

    Sorry, I'm probably missing something, but is the dotted line respresentive of the Nd144 content in the samples?

    • @geohubliverpool651
      @geohubliverpool651 10 หลายเดือนก่อน

      The vertical axis on the graph is showing a ratio of 2 isotopes of Neodymium. Whatever the ratio of these isotopes is in the melt in the magma chamber when the crystallisation takes place both isotopes will behave in the same way chemically. Crystallisation is a chemical process, so the ratios will be the same in each mineral as it crystallises. The actual amounts of Neodymium will get less as the cooling takes place because here will be less left in the melt. The horizontal dotted line emphasises that the ratio stays the same for the Neodymium isotopes in olivine, feldspar and pyroxene.

  • @tacoman202
    @tacoman202 11 หลายเดือนก่อน

    Doesn't Nd-144 decay as well? Wouldn't you want the isotope in the denominator to be a stable isotope?

    • @geohubliverpool651
      @geohubliverpool651 11 หลายเดือนก่อน

      144 Neodymium has a half life of 2.3 x 10 to the power 15 years so, although it is not stable, its half life is so long that at the age of the Solar System 99.999% of the original isotope would be unchanged. This means to all intents and purposes it can be considered to be stable.

  • @GhostRyder2008
    @GhostRyder2008 ปีที่แล้ว

    4:27 so only during this crystallization process can these different minerals absorb the Samarium parent atom? They can't absorb it before crystallization or afterward?

    • @geohubliverpool651
      @geohubliverpool651 ปีที่แล้ว

      Hi, Sorry it has taken so long to reply. This method of dating is only used for igneous rocks and the minerals found in the rocks did not exist before crystallisation. Everything is 'locked in' once the mineral has crystallised and formed. Since the magma is cooling it is never going to reach a temperature where it meltsand can absorb the parent atoms. After their formation, original igneous rocks may be changed by heat during metamorphism and may reach temperatures that alter their original compostion. Metamorphic rocks are very difficult to date because if this. Regards, GeoHubLiverpool

  • @alright1239
    @alright1239 ปีที่แล้ว

    Damn we got thin section 2 before gta 6

  • @mat16006
    @mat16006 ปีที่แล้ว

    8:20 was groundbreaking for my learning, wish I saw this earlier.

  • @sanoyeee9220
    @sanoyeee9220 ปีที่แล้ว

    How can we distinguish pyroxene if the cleavage isn't clear ? I'm finding it hard to recognize the interference colors orders

  • @PlayNowWorkLater
    @PlayNowWorkLater ปีที่แล้ว

    Nice demonstration

  • @crystalgemstone
    @crystalgemstone ปีที่แล้ว

    ❤❤❤❤

  • @crystalgemstone
    @crystalgemstone ปีที่แล้ว

    ❤❤❤❤

  • @wolpumba4099
    @wolpumba4099 ปีที่แล้ว

    I didn't understand the purpose of this diagram. This is what GPT4 says: This is a description of how to plot the orientation of a geological plane (like a bedding or fault plane) on a stereonet, which is a tool used by geologists to visualize and analyze the orientation of planes and lines in three dimensions. In essence, by following these steps, you are able to visualize the orientation of a geological plane on a two-dimensional surface. This process helps geologists in understanding structural relationships in rock bodies, which can be crucial for various purposes like understanding tectonic histories or planning in engineering geology.

  • @cristobalalonso8558
    @cristobalalonso8558 ปีที่แล้ว

    The cement of the sample are Fe oxides?

  • @sebastiansteptoe5349
    @sebastiansteptoe5349 ปีที่แล้ว

    good vid, thanks a lot

  • @hajial-alawy7088
    @hajial-alawy7088 ปีที่แล้ว

    Thank you

  • @Omkara_404
    @Omkara_404 ปีที่แล้ว

    Really appreciable work.

  • @seeharvester
    @seeharvester ปีที่แล้ว

    It takes a lot of balls to perform this experiment.

  • @khalidshaebatah173
    @khalidshaebatah173 ปีที่แล้ว

    i love that thanks

  • @gentrelane
    @gentrelane 2 ปีที่แล้ว

    Wonderful!

  • @paulsmit2695
    @paulsmit2695 2 ปีที่แล้ว

    Excellent video. Thank you so much!

  • @jonarpontino4550
    @jonarpontino4550 2 ปีที่แล้ว

    Send me dm on messenger.thanks.. i want to know about my rocks.. i found this, with his broken parts.. this is beautifull rocks with a shinny small crystal

  • @jonarpontino4550
    @jonarpontino4550 2 ปีที่แล้ว

    I have that looks like in my rocks.. please dm me for the picture sample of my rocks.. please help me. I send you a picture of my bluish green rocks...

  • @FunOffect
    @FunOffect 2 ปีที่แล้ว

    great work

  • @AbdulSamad-js5mb
    @AbdulSamad-js5mb 2 ปีที่แล้ว

    Please upload more metamorphic rocks thin section videos.

  • @louisalou2121
    @louisalou2121 2 ปีที่แล้ว

    So well explained, totally understood now. Thank you so much!

  • @sciencenerd7639
    @sciencenerd7639 2 ปีที่แล้ว

    cool

  • @sciencenerd7639
    @sciencenerd7639 2 ปีที่แล้ว

    very informative, thanks so much

  • @mahmuodgamal6849
    @mahmuodgamal6849 2 ปีที่แล้ว

    This is very useful 👍👍 Thanks ☺️

  • @KamranKhan-wr1ob
    @KamranKhan-wr1ob 2 ปีที่แล้ว

    Thank you such easiest and awesome interpretation . waiting for more contents

  • @luisavelar8856
    @luisavelar8856 2 ปีที่แล้ว

    Thank you for the video. It would be very, very informative to show, with arrows, where side is north, directions of the flows/cross beding, and the mouth of the delta.

  • @majidkhazaee6378
    @majidkhazaee6378 2 ปีที่แล้ว

    This thinsection has no microcline, this grain and others are products of silisification of dolomite, you can sea rhomboid shape of grains, its result of my unpublished work and this type of silisification has several by product and can create diagentic sandstones, you can use staning method, you will sea surprisingly, it is not a microcline grain

  • @hereweka
    @hereweka 2 ปีที่แล้ว

    answer should be 25°/332°

  • @IGBwasTaken
    @IGBwasTaken 3 ปีที่แล้ว

    he went into the freezing ocean for this. jeez my man

  • @basil6276
    @basil6276 3 ปีที่แล้ว

    Wonderful keep uploading more

  • @1.4142
    @1.4142 3 ปีที่แล้ว

    Pretty

  • @thisisaugusto
    @thisisaugusto 3 ปีที่แล้ว

    Thank u so much🙏🏽

  • @مازن-ص2ظ
    @مازن-ص2ظ 3 ปีที่แล้ว

    Thank you 🌹

  • @basil6276
    @basil6276 3 ปีที่แล้ว

    please create more videos on petrography and if possible on petrogensis too

  • @blue4172
    @blue4172 3 ปีที่แล้ว

    this was so clear! thank you so much :)

  • @nnilimachanu
    @nnilimachanu 3 ปีที่แล้ว

    Thank you very much .

  • @leemccullochjames1247
    @leemccullochjames1247 3 ปีที่แล้ว

    you only showed 4 balls!

  • @cumhurbabaoglu2585
    @cumhurbabaoglu2585 3 ปีที่แล้ว

    Thanks!

  • @nicokuhne3255
    @nicokuhne3255 3 ปีที่แล้ว

    ive learned more in 5 minutes, than i have in 7 hours of class today. thank you very much

    • @alright1239
      @alright1239 ปีที่แล้ว

      Then your dumb 😊

  • @SillySnekenjoyer
    @SillySnekenjoyer 3 ปีที่แล้ว

    You just got rock rolled

  • @mohammedchibani9287
    @mohammedchibani9287 3 ปีที่แล้ว

    Lam-mince

  • @mohammedchibani9287
    @mohammedchibani9287 3 ปีที่แล้ว

    HI