Identifying Metamorphic Rocks -- Earth Rocks!

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  • čas přidán 25. 06. 2014
  • For an introductory college-level physical geology class: a review of how to classify and identify a metamorphic rock. Includes a discussion of foliation and other clues to look for in a rock to indicate the intensity or grade of metamorphism to which the rock was subjected. Reviews how to identify each of the following rocks, including what the rock used to be (parent rock) and what was the metamorphic setting in which each rock formed: marble, quartzite, hornfels, skarn, migmatite, gneiss, schist, phyllite, slate, serpentinite, eclogite, and greenstone.
    **This video comes near the middle of the semester, so there may be terms with which the audience is unfamiliar. In fact, it is recommended that you watch this video only AFTER watching Identifying Minerals, Identifying Igneous Rocks, and Identifying Sedimentary Rocks. This video reviews ALL those rock types and discusses how they transform into a new metamorphic rock. It can be overwhelming if you start first with this video. For a full playlist, refer to the Geology playlists on the Earth Rocks! CZcams Channel.
    Content within this video is based on information available in any standard introductory college geology textbook (or lab manual), such as Essentials of Geology -- Tarbuck and Lutgens -- Pearson Publishing.
    If you are studying geology and would like access to interactive lessons built around these videos, you can do so by joining the Earth Rocks! CZcams Channel.
    If you are an earth science enthusiast and would like to support our ongoing video development and engage with us behind the scenes...
    Or if you are a student and would like access to interactive lessons built around these videos...
    you can do so by JOINING the Earth Rocks! CZcams Channel:
    / @earthrocks .
    Thank you!

Komentáře • 153

  • @kattiannavaughn6942
    @kattiannavaughn6942 Před 6 lety +33

    The pile of pens... Awesome way to show how foliation occurs. Thank you

  • @nickolaykolev8986
    @nickolaykolev8986 Před 7 lety +77

    Helps a lot in school. My son told me that he got %100 on his test because of this video.

  • @jjcvmd
    @jjcvmd Před rokem +16

    The illustration of foliation using pens and pencils is so simple yet the most brilliant metaphor I’ve ever seen

  • @reneewishek2035
    @reneewishek2035 Před 2 lety +4

    This is the best video on metamorphism I have seen. I have extensive chemistry background, so it may be that the way things are explained here makes sense because I think of the world in terms of atoms and their movement and rearrangement. I think this is the most fascinating and helpful video on explaining mineral formation and and metamorphism at an atomic level that I have found, and I've watched upwards of 30 or 40 videos just on this topic. Thank you SO MUCH!

    • @EarthRocks
      @EarthRocks  Před 2 lety +1

      What a fabulous comment. Thanks for sharing your experience! It means a lot. :)

  • @koikogo
    @koikogo Před 6 lety +20

    Great info. Professional lecturer. Nice voice. Logical explanation. Easy to remember.

  • @skylark1848
    @skylark1848 Před 2 lety +2

    I've always wanted to be able to tell /feel where a rock was formed.. this information you have presented is gold ❤️

  • @nunyabiznes4471
    @nunyabiznes4471 Před 2 lety +1

    This was excellent! I was confused on how rocks change and the explanation on pressure and temperature really helped me understand the process.

  • @carlamaeterrado8777
    @carlamaeterrado8777 Před 4 lety +8

    I'm a geology student and your videos helps me a LOT!! Thank you :))

    • @EarthRocks
      @EarthRocks  Před 4 lety +2

      You're welcome. Thanks for letting me know. :)

  • @botryoidalbishhh3150
    @botryoidalbishhh3150 Před 3 lety +2

    The best information on CZcams to date. Thanks

  • @IrishAndy001
    @IrishAndy001 Před 3 lety +4

    Great video with a lot of knowledge I love learning about different rock types how they were formed how heat and pressure can change them and learn all about geology.

  • @aoconnor2933
    @aoconnor2933 Před 3 lety +23

    I'll probably watch this 10 more times just to gain an intimate understanding ha

    • @missemma8504
      @missemma8504 Před 2 lety +2

      I've watched it for more than___, I don't know how many times.. i always come here to watch this anytime before an interview or an exam..
      As I'm a senior Geological Engineer Graduate. DONE my Undergard Degree 6 years ago.

    • @bobketteringham4779
      @bobketteringham4779 Před rokem +1

      Me too

    • @aoconnor2933
      @aoconnor2933 Před rokem

      @@missemma8504 that's awesome. What do you do with it now? I'm barely only about to earn my Associates in LA with a focus in Math and Science before transferring to an undergraduate program in geology.

    • @georgemcconnell5405
      @georgemcconnell5405 Před rokem +1

      Me too lol!

    • @georgemcconnell5405
      @georgemcconnell5405 Před rokem +2

      Check out earth science x. It's a complete geology lecture and it's on the same level as this. I think there are 26 videos, going through minerals, igneous, sedimentary, metamorphic, plate tectonics, ground water, soils, volcanoes, mass wasting etc. It's a great CZcams course if you like geology.

  • @WiekingderViking
    @WiekingderViking Před 2 lety

    You do a very nice job. Showing the “stuff of geology” helps me to relate to the historical geology! Great graphics, great voice. Very picky professor Bob

  • @orenmaco
    @orenmaco Před 3 lety +1

    Beautifully put together! Thank you so much!

  • @raieyahya8350
    @raieyahya8350 Před 6 lety +1

    it really help me a lot in our activity in geology, thanks for this video

  • @emmacarina73
    @emmacarina73 Před 5 lety

    Wish I had seen this as an undergraduate geology student In the late’70s. [encountered all of these on field trips to Assynt area, N.W.Scotland] ...[ serpentine In Cornwall ]
    Clear and informative....

  • @greglaroche1753
    @greglaroche1753 Před 3 lety +1

    Great video. I wish I had seen it when I was studying geology. Thanks.

  • @explorewithmarcus
    @explorewithmarcus Před 8 lety

    Great introduction, Thank you.

  • @praveenprince1313
    @praveenprince1313 Před 3 lety

    Thanku you so much, excellent way of teaching... 👌 i have clarified my doubts on this topic

  • @bhavatharani7412
    @bhavatharani7412 Před 4 lety

    Excellent video about metamorphic rocks.... keep make more.....

  • @brento2890
    @brento2890 Před 5 lety

    Excellent video !!!!

  • @mafic_taco7061
    @mafic_taco7061 Před 2 lety

    Great video. Thanks!

  • @samuelbrown6249
    @samuelbrown6249 Před 3 lety

    Thank you for making this video! I am taking Earth Science in school and your lesson has been very helpful!

  • @unavoidablycanadian397
    @unavoidablycanadian397 Před 2 lety +1

    7 year old video but timeless information.

  • @JulesAnthonyLaCroixPhotoArt

    Great Vid on Rocks! Geologist like School!! Thank You!!

  • @valentintranaman4232
    @valentintranaman4232 Před 6 lety

    thank you!! im from chile, your videos are amazing and very didactic.

  • @spectator59
    @spectator59 Před 4 lety +6

    I've recently taken up geology as a hobby, and enjoyed the video, but wow! so much new vocabulary. It's going to be a challenge to internalize it all.

    • @supritisingha7909
      @supritisingha7909 Před 4 lety

      You are right

    • @oscarmedina1303
      @oscarmedina1303 Před 2 lety

      Same issue. I focus on on understanding and learning one new word per day. Really helps to have a sample in hand to examine closely.

    • @SimonSozzi7258
      @SimonSozzi7258 Před rokem

      Pen and paper. Take notes 📝

  • @subtle0savage
    @subtle0savage Před 2 měsíci

    Excellent synopsis.

  • @nunyabiznes4471
    @nunyabiznes4471 Před 2 lety +1

    This was excellent👍🙂

  • @antientdude1100
    @antientdude1100 Před 7 lety

    great lecture, thank you...

  • @spityterry
    @spityterry Před 5 lety

    wonderful video!!

  • @stephenrocks7004
    @stephenrocks7004 Před 2 lety

    Thank you so much for teaching us to , proud to ask our profs. My ignorance has always been my second greatest teacher.

  • @angshumanchangmai8074
    @angshumanchangmai8074 Před 5 lety

    Tanx 4 such an amazing video.... Helped me a lot

  • @smritikonadas5734
    @smritikonadas5734 Před 7 lety

    Thank you, sister....you r the best

  • @amonglaao5116
    @amonglaao5116 Před 4 lety

    The way u explain the video is amazing...can u pliz make a video on chemographic projections of metamorphic rocks...🙏

  • @billallen275
    @billallen275 Před 2 lety

    I grew up with a Geological Engineer for a dad. Truly fascinating field. Nice video my mineralogy is sadly lacking.

  • @larryherrera
    @larryherrera Před 4 lety

    Amazing!

  • @skylark1848
    @skylark1848 Před 2 lety

    I like how you simplified foliation 🌻

  • @Alexpur817
    @Alexpur817 Před 5 lety +2

    God bless you. Just crammed this video before my lab exam and got a 92. 🙌🏼🤘🏼

    • @EarthRocks
      @EarthRocks  Před 5 lety +3

      Yay! Thanks for letting me know. :)

    • @Alexpur817
      @Alexpur817 Před 5 lety

      Thanks for putting it out there for folks! Super useful!

  • @jaquelinepaul7384
    @jaquelinepaul7384 Před rokem

    This was fantastic thank you

  • @irenenl4035
    @irenenl4035 Před 6 lety

    Thanks, brilliant!

  • @memoryrinehart4452
    @memoryrinehart4452 Před 5 lety +2

    Kept falling asleep---watched in 3 or 4 segments...cuz it was that informative. But I think another utuber switches the order of phyllite and schist.

  • @skylark1848
    @skylark1848 Před 2 lety

    I've always enjoyed feeling different rocks as a child. ❤️

  • @maatarinidigital6517
    @maatarinidigital6517 Před 4 lety +1

    Ma'am,
    Kindly explain about classification of sedimentary rocks based on gneiss with some examples

  • @rcosen
    @rcosen Před 7 lety

    cool!many thanks!!

  • @jpguzman924
    @jpguzman924 Před 3 lety

    This was amazing thank u I looooove rocks cycles

  • @wak-asahan4451
    @wak-asahan4451 Před 2 lety

    Wow...thank you great video of identifying metamorphic rock stone....please process of manganese,iron ores and coal .

  • @geologist5838
    @geologist5838 Před 5 lety

    Great video

  • @happycool8083
    @happycool8083 Před 9 lety +1

    Nice!!!!!

  • @nimeiriraja9600
    @nimeiriraja9600 Před 5 měsíci +1

    Thank you ❤

  • @debbiramsey4603
    @debbiramsey4603 Před 3 lety +1

    Watch this it is outstanding.

  • @kingme79
    @kingme79 Před 3 lety +3

    7:23 I grew up on too much Bevis and Butthead to not notice you say, "sheety cleavage" huh huh huh

  • @user-qy4wb3lq6k
    @user-qy4wb3lq6k Před 5 lety +2

    Very informative video.👍
    I have a question please.
    How are there alternate layers in metamorphic rocks? How is there a black, then light, then black band in Gneiss for example? Is this like nature is also conscious about color combinations.😁 How do they arrange like this?

    • @EarthRocks
      @EarthRocks  Před 5 lety +3

      Density -- the darker minerals are denser than the lighter ones. When the crystals are given some energy through heat, they can move around a bit and will separate in bands by density. We see the same thing with sand grains settling on a hillside.

  • @pukhrajmansion8445
    @pukhrajmansion8445 Před 3 lety +1

    You are great personality of world science mineral

  • @caseyblakely5327
    @caseyblakely5327 Před 2 lety

    Thank you, really easy for someone like me who is just beginning to learn about geology.

  • @larryherrera
    @larryherrera Před 4 lety

    The slate is beautiful.

  • @MyButtercup
    @MyButtercup Před 3 lety

    I have collected a yard full of New Mexico metamorphic rocks. Thanks

  • @melonlord8766
    @melonlord8766 Před 6 lety

    I know how the metamorphic from but can you do the experiment to identity the metamorphic rock

  • @chrisavila8693
    @chrisavila8693 Před rokem +1

    Wait you just saved my whole quarter

  • @lindadechiazza2924
    @lindadechiazza2924 Před 2 lety

    This short film clip makes identification extra simple...Almost reveals all the mysteries in geology...
    Luv Rocks! wink

  • @vdoraiburu1696
    @vdoraiburu1696 Před 2 lety

    Thank 😊 you ,very much Ma'am from "SINGHBHUM CRATON" INDIA 🇮🇳.
    It was really helpful.....

  • @Haider1963
    @Haider1963 Před 7 lety

    Thanks a lot ur great....

  • @mmercier0921
    @mmercier0921 Před rokem

    i live in an area full of glacial till. ten random rocks still takes me hours. geology is incredibly complex, i discovered.

  • @alanouda5607
    @alanouda5607 Před 2 lety

    Thanks a lot

  • @StereoSpace
    @StereoSpace Před 7 lety +1

    You sure cover a lot of territory in your 15 minutes videos!

  • @agustinuswodon6864
    @agustinuswodon6864 Před 3 lety

    I'm very-very like.

  • @musherurebrighton5982
    @musherurebrighton5982 Před 3 lety

    Hello i appreciate the work done and i was inquiring if there is a rock called tillite

  • @lyda9335
    @lyda9335 Před rokem

    Great 👍 meteorite

  • @skylark1848
    @skylark1848 Před 2 lety

    I'm going to look at marble flooring with new eyes now

  • @LardGreystoke
    @LardGreystoke Před 2 lety

    This rocks.

  • @cheerybellerellegue8309
    @cheerybellerellegue8309 Před 3 lety +1

    hello and good day! Can we use your video for educational purposes? Thanks so much and more power!

    • @EarthRocks
      @EarthRocks  Před 3 lety +1

      Of course. It's creative commons licensed. Just be sure you maintain that license and the attribution: creativecommons.org/licenses/by-nc-sa/4.0/

    • @maamchaeyrelleguedocheires5684
      @maamchaeyrelleguedocheires5684 Před 3 lety

      Thank you so much and more power for more amazing videos. .

  • @jerrywaters4814
    @jerrywaters4814 Před 4 lety

    Hum where I live in Oklahoma we have.
    But I’m not Educated on what the topic what you talking. Wish I knew what you are talking about. But what I am Curious about, there is a huge hundred foot plus solid Quartz mountain is what I call it, coming straight out of the ground. Which stands alone,

  • @stephaniecho6649
    @stephaniecho6649 Před 9 lety +2

    Cool.

  • @lynnmitzy1643
    @lynnmitzy1643 Před 6 lety

    Thanx

  • @stephenrocks7004
    @stephenrocks7004 Před 2 lety

    I have spent most of my adult life scouring our local deserts in the great Southwest San Diego and Mexicali and Calexico. There are areas that are restricted to all people along the old Butterfield stage Road. I have ventured into these areas with great caution and there are no signs of indigenous habitation. Back in the 1400s it was reported that this area was inundated by the sea of Cortez.
    I have found many large Jipson crystals and igneous rocks associated with volcanic activity yet the one element that confounds me are the manganese nodules in small piles strewn about. I sent several samples to be analyzed and they came back as 98% pure manganese the rest being iron.
    So my question is, how does manganese nodules form in ancient oceans and seas?

    • @EarthRocks
      @EarthRocks  Před 2 lety

      Manganese nodules form on the bottom of the seafloor as waters are supersaturated with dissolved Manganese. It may be you're finding some deposits left behind as old seafloor rocks have eroded/weathered.
      Manganese oxides also form as part of the chemical weathering process when minerals dissolve (especially in the desert), but that just creates a stain on the surface (desert varnish).
      I bet on the old seafloor deposits. You can see them described in part of my Ocean Sediments video:
      czcams.com/video/COz4XiqmQ1Y/video.html

    • @stephenrocks7004
      @stephenrocks7004 Před 2 lety

      @@EarthRocks my surname is Rocks, and my Christian name is Stephen. So as much as I enjoy Rock hunting, my college degree was in chemistry.
      I hear now that industry is looking for manganese deposits in the search for rare earth metals. The samples I turned in for analysis showed two elements, manganese at 99% and iron at one.
      So why are they looking for manganese when there is one percent left over as iron and possibly a fraction. And of that could be rare earth.
      So what am I missing in this equation? as a neophyte ?

  • @eltorigy4411
    @eltorigy4411 Před 3 lety

    great >>>>> greaaaaaaaaaaaat, thanks alot

  • @rocksdonteat6210
    @rocksdonteat6210 Před 5 lety +2

    Metamorphic rocks are evolutionary.

  • @mineralstones5161
    @mineralstones5161 Před 3 lety

    why you dont tall about daimonds? are they vulcanic glass?

  • @shenglim2184
    @shenglim2184 Před 7 lety

    great

  • @krishnauppar380
    @krishnauppar380 Před 6 lety

    👌

  • @amiebadjie216
    @amiebadjie216 Před 7 lety

    i will just said thank you

  • @geraldinesera8915
    @geraldinesera8915 Před 3 lety +1

    As a recent rockhounder, I had hoped this video might be a knowledge resource.
    Now I know, " understanding" what you are sharing, is not the least bit helpful.
    But thanks for your time.

  • @gonix25
    @gonix25 Před 6 lety

    Graciaaaaaaaas!!!!!!!!!

  • @trptrungblogs
    @trptrungblogs Před rokem

    ❤️❤️❤️👍⭐👍

  • @carminetocco9334
    @carminetocco9334 Před 2 lety

    I have a couple of rocks that take to a good quality magnet can I send you a picture of so where

  • @tannerwolters5462
    @tannerwolters5462 Před 2 lety

    Quartz be like: I am the most useful thing on this planet :3

  • @noahsleights53
    @noahsleights53 Před 2 lety

    LUOA gang!

  • @maokisaseane8589
    @maokisaseane8589 Před 3 lety

    How do I differenciate between sedimentary and metamorphic rock

    • @EarthRocks
      @EarthRocks  Před 3 lety

      Watch the video on the Rock Cycle: czcams.com/video/N2BKjELzhfU/video.html
      That should help. :)

  • @rogercotman7285
    @rogercotman7285 Před 6 lety

    I have a specimen that I need some help identifying. Could you help me, if I send a picture? Not sure if it is a schist or Gneiss.....

    • @EarthRocks
      @EarthRocks  Před 6 lety

      Send it on. :) You can find my email address by Googling me: Katryn Wiese.

    • @rogercotman7285
      @rogercotman7285 Před 6 lety

      My e-mail sent, was rejected. Thanks for any help.....Roger

    • @katrynwiese190
      @katrynwiese190 Před 6 lety

      Sorry about that. My email has been having problems the last week, and I have no idea why. Try emailing kwiese@ccsf.edu.

    • @rogercotman1314
      @rogercotman1314 Před 6 lety

      Thanks ....Will do.

  • @surajpatel3044
    @surajpatel3044 Před 2 lety

    I thought converging continent and subduction zone are same. What's the geological difference. I am not asking the difference of pressure and temperature gradient

    • @EarthRocks
      @EarthRocks  Před 2 lety +1

      Continents don't subduct. So when two continents collide, they create massive mountains with deep roots, but no subduction. Only when one of the converging plates has ocean crust at the boundary will there be subduction. I have a video on plate tectonics basics that can help you: czcams.com/video/2uh8W4vGLQ0/video.html

    • @surajpatel3044
      @surajpatel3044 Před 2 lety

      @@EarthRocks our teachers said indian plate is subducted into Eurasian plate and himalayan range is formed. Is that wrong? Please clarify. And thanks a lot for the previous reply. I owe you ma'am.

    • @EarthRocks
      @EarthRocks  Před 2 lety +1

      @@surajpatel3044 Yes, subduction brought two continents together. The subducting Indian plate had continental crust attached to the ocean crust, and once the portion of the plate with the ocean crust had completely subducted, the continental portion collided with Eurasian plate and formed the Himalayas. So subduction brought the two together. See the Plate Tectonics Global Impacts video: czcams.com/video/Y5aMnRGVp_8/video.html (look at 7:14 onward).
      And you're welcome. :)

  • @2HHB
    @2HHB Před 4 lety

    07:00 slate

  • @hurtshaleagleview5322
    @hurtshaleagleview5322 Před 6 lety

    Dolemite is the baddest rock. Remember kids no matter what happens, you do not mess with Dolemite.

  • @TheMrdoc26
    @TheMrdoc26 Před 3 lety

    Wholly Mountain Building Batgirl!!!

  • @aliwaqas2396
    @aliwaqas2396 Před 6 lety

    geologist for sure

  • @fahimrezwankhair7344
    @fahimrezwankhair7344 Před 3 lety

    This video rocks!

  • @aklepatzky
    @aklepatzky Před 9 lety

    skarn is a rock or a type of mineral deposit

  • @sliceoflife8107
    @sliceoflife8107 Před 3 lety +1

    My name is skarn, Michael Skarn

  • @skylark1848
    @skylark1848 Před 2 lety +1

    Chert rocks feel a lot like tooth enamel

  • @thebestofallworlds187
    @thebestofallworlds187 Před 5 lety

    so if a rock has foliation, it's always a metamorphic rock?

    • @EarthRocks
      @EarthRocks  Před 5 lety +1

      Not necessarily, but usually. Sedimentary rocks can have layering, and as pressure is added, that layering can turn to foliation (the clay minerals in the sediment align). So some sedimentary rocks that are grading into metamorphic through addition of small amounts of pressure can be foliated. But that's a gray area (the zone when sedimentary turns into metamorphic).

    • @thebestofallworlds187
      @thebestofallworlds187 Před 5 lety

      thank you!

  • @williamsohveymah5550
    @williamsohveymah5550 Před 26 dny

    Minerals aren't like pens. Sand would be better for illustration. Awesome video. As Shawn Willsey calls them a general term, sexy rocks 😂

    • @EarthRocks
      @EarthRocks  Před 26 dny

      Thank you for your feedback. 😀 Note: unfortunately sand wouldn’t show foliation. It’s equidimensional. To see foliation, you need an elongated mineral like actually actinolite or kyanite or hornblende. These have shapes similar to pens. Or flat planes like micas (and paper). Only these will align when put under pressure.

  • @AwytsmVroom
    @AwytsmVroom Před 4 lety

    if anyone knows what destiny 2 is the person speaking sounds like ADA-1! XD (i'm not making fun of them)