Extremely useful. Just the basics, but they're all there.
@user-qb4gb1bn1k4 жыл бұрын
Really awesome video, really helpful and informative. Keep up the earth sciences. This channel was shown to us by my university geography lecturer here in england :).
@mariperelman75792 жыл бұрын
Thanks!
@rksy51954 жыл бұрын
thanks a lot
@bijetaphairembam29202 жыл бұрын
Can u tell me why fossils are found only in sedimentary rocks?
@ThomasStevensontutor2 жыл бұрын
Sure thing! There are three main rock types; igneous, metamorphic and sedimentary. Igneous rocks are made from lava or magma, which in turn is made by melting pre-existing rocks. If those pre-existing rocks ever contained fossils, they were melted and there is no trace of them left. Metamorphic rocks are also made from pre-existing rocks. Although they don't melt, those rocks are heated and squashed to such an extreme degree that their chemistry and structure change. Any fossils contained in the rocks are transformed into unrecognisable blobs. By the principle of elimination, that leaves sedimentary rocks as the only fossil-friendly type! I hope this answers your question. :)
@bijetaphairembam29202 жыл бұрын
@@ThomasStevensontutor yes & thank you
@deniseneal17512 жыл бұрын
Thank you but I am trying to find out how my solid red, yellow & turquoise blue opaque rock pendant was formed and how a solid, clastic sedimentary rock could be formed as if it wey fashioned out of Fimo or Sculpey clay WITHOUT opaqueness or iridescence 🤔🤔 What is it's TRUE NAME & CLASSIFICATION????🤔🤔🤯😫
@ThomasStevensontutor2 жыл бұрын
That sounds like a very nice pendant! Do you have a picture you'd be willing to show me? You can email me at tom.william.stevenson@gmail.com and I'll see if I or one of my geologist friends can work out how it was formed.