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Joan Martinez Bofill
Registrace 18. 02. 2021
Geology for Civil Engineers. Geología para Ingenieros de Caminos, Canales y Puertos. Geologia per Enginyers de Camins, Canals i Ports.
Geology for Engineers: Geological maps 6. How to find and underlying contact (not outcropping)
An underlying contact is a geological structure (layer, fault...) that is not directly crossed in the line of your cross section, because is not outcropping in surface. Nevertheless, it must appear in your cross section in order to fully solve and understand the geological structure. This short tutorial shows you how to find and draw an underlying contact. I apologize for the qualitiy of the videorecord, but my 11 years old video assistant did his best :-)
zhlédnutí: 1 835
Video
Geology for Engineers: Geological Maps 4. Organize your data. Strike, Dip Direction, True & App. Dip
zhlédnutí 2,1KPřed 3 lety
When solving a geological map is important to have all your data well organized. It is a common mistake to misconfuse the true dip and apparent dip. Having all these data organized will help you to avoid errors. In this tutorial you'll learn how to do it.
Geology for Engineers: Geological Maps 5. How to adjust topography to geology in cross section
zhlédnutí 5KPřed 3 lety
One of the most common problems that you can find when drawing your geologic cross section is that the topography doesn't fit to the dip of the layers, causing wrong interpretations. This is commonly caused because the topography is not enough precise. So you have to make some readjustements in order that everything fits correctly. In the medium to final part of this tutorial, you'll see how to...
Geology for Engineers: Geological maps 3. Calculate True Dip & Apparent Dip
zhlédnutí 5KPřed 3 lety
Learn how to calculate the STRIKE (delta), DIP DIRECTION (alpha), TRUE DIP (beta) & APPARENT DIP (beta app) of geological layers for different cross sections. The apparent dips are obtained by two methods: graphically and calculated using the angle between the strike and the direction of the desired cross section (Theta')
Geology for Engineers: Metamorphic Rocks. Basic Identification and Classification.
zhlédnutí 242Před 3 lety
Learn how to make a basic description and classify metamorphic rocks. Distinguish the main characteristics of Regional metamorphism, mainly related to Pressure, and Contact metamorphism, related to Temperature. Observe and describe the foliation, recristallization of the rocks, and formation of new metamorphic minerals (blastesis), such as ocellar textures, and formation of spots of porphirobla...
Geology for Engineers: Sedimentary Rocks. Basic identification and classification
zhlédnutí 149Před 3 lety
Practice lecture of sedimentary rocks. Learn in an easy way how to identify the main characteristics and components of sedimentary rocks, and how to classify them.
Geology for Engineers: Igneous Rocks. Basic Description and Identification
zhlédnutí 320Před 3 lety
Learn how to make a basic description and classify igneous rocks. Which are the essential minerals and the accessory minerals. The influence of the geological setting in the texture, and how to identify the basic rock-forming minerals.
Geology for Engineers: Description of rocks Basic characteristics
zhlédnutí 286Před 3 lety
Introduction to the classification of rocks. Learn how to identify the basic characteristics when trying to describe a rock.
Geology for Engineers: Geological Maps 2. Draw a Geological Cross Section with Dipping Layer
zhlédnutí 46KPřed 3 lety
Learn how to draw a geological cross section and calculate the STRIKE (delta) and DIP DIRECTION (alpha) for a simple geological cross section, parallel to the Dip Direction.
Geology for Engineers: Geological Maps 1. Draw a topographic cross section
zhlédnutí 2,8KPřed 3 lety
Learn how to draw a topographic cross section from a topographic map. Understand the altitude isolines, equidistance and how to aply a correct scale to your cross section.
Thanks sir this is the map i actually see in my exam trust me i blast it but i have mistake the dip but all other is in place
Thank you so much I had a hard time understanding this concept
Thank you sir❤
Hi I don't get how you got the 15mm when you compute the difference of 700 and 400 elevation. Would you mind to elaborate? I don't understand since the camera did not show the scaling you used in the ruler. Thanks!
700-400=300m. The scale is 1:20000, then 1cm=200m, if you have 300m altitude difference, then you have 200m(1cm=10mm)+100m(0.5cm=5mm) therefore 15mm or 1.5cm or 300m.
There was a book entitled 'Geology for Engineers' around in the 70's.
Thank you sir. I have an exam on tomorrow just got knowledge through this video. Blessing from Srilanka. ❤️ Much appreciated 🙏
Hi sir thank you so much for this helpful video
More understandable thank you
This helped except the fact the video didn’t directly show on the sheet and that was quite stressful. Thanks anyway!
شكرا 🙏💕
I'm a student at Middle East Technical University, studying mining engineering. Thank you so much for your help, sir!
Me too😅
@@goksuyildiz9540 finallerinizde başarılar hocam 😅 yorumunuz ilginç derecede keyfilendirdi beni teşekkur ederim
Thanks Joan Martinez those maps you have solved, you have made them clear and well understood hope you solved also those which are still
You're welcome!
thanks very much, but i am wondering why don't use the apparent dip of the layer in the cross section? or how to calculate the apparent dip? thank you very much.
Hi Flora, I'm happy that you liked the video. Regarding to your question, in this case you have to use the true dip because the cross section is perpendicular to the layers. In any other situation, when the cross section is forming an angle different of 90º with the layers or other geological structures, you've to use the apparent dip. You can learn how to calculate it in this video: czcams.com/video/hI_g0TOeVaQ/video.html Best regards Joan
@@joanmartinezbofill3977 Thank you very much☺
What about P in ur cross sectional view??
where can i find the map pdf?
Thanks alot I'm a geophysics student at Cairo university And your video helped me alot All the support 🖤
Thanks for your support. I wish I had a little bit more of time so I could upload more videos. Let's see if I find the opportunity. Best regards
Hi Sir do you have any documents concerning the lithofacies maping using conventionnal facies triangle , i will be very grateful if you help me , i need to understand how to represente the ratios in the map ... please i am ready to give you my email at any time. best regards
Hi MegaKASPER31, I supose that you are working with igneous rocks, which are usually classified by using the Strekeisen ternary diagrams, also known as QAPF diagrams. You should previously identify and classify each type of rock using their essential minerals (quartz, plagioclase, alcali feldspar and feldspathoids). At this point you may need the use of petrographic thin sections. Then mark the boundaries in the map. Most rocks can appear to look the same when are seen in the field, but when you get a little bit into detail you can see the differences and you'll be able to mark the contact between the different igneous bodies. Hope you find the answer useful. Best regards
@@joanmartinezbofill3977 thank you Mr Martinez , unfortuantly no i work with sedimentary rock (Diatomits, Limestones, and Clay) i want to draw a lithofacies maps using a ternary or lithofacies triangle in french (triangle standards des faciès) this my problem i don't know how use this triangle to draw the contour line i know that the fraction 1, 1/2, 1/4, 1/8, and 0 are useful for this study (the zero here mean a 100% of the opposite lithologie . thank you and regards Mr Joan Martinez Bofill.
Thank you for this wonderful video sir...please I have a geological map that I am supposed to draw a cross section for it a long a specified line....sectional profile isn't appearing like the way I perceive it...I would be glad if you (or anyone at all) could help me with it...I will send it through email. Thank you in advance.
Hi SiMBA, make sure that the topographical scales are correct. When the topography is not properly drawn, then everything goes wrong. Another very important issue is to correctly calculate and draw the apparent dip in your cross section.
Bro do yoy share your whatsapp number iam from.pakistan and geology student so. I need your help
Thanks for your efforts ❤️❤️❤️
The angle and focus of the video recording are very bad
Sorry, you didn't like it. It was done with the best of intentions. I will try to improve it in the future.
Go make yours! You can't even appreciate his efforts
Wow! 🤠 I am looking forward to your channel sir. My second year(civil engineering) will soon start after a month. Surely this channel is going to be fun. 😌
I hope you'll enjoy it a lot! Good luck!!
Thanks for your support!
thank you very much keep on doing the good work
Ei Jordi!! Com et va la vida? Ja ho veus, el temps passa però els mapes continuen igual :-) Espero que estiguis molt bé amb tot això del Covid. A veure si ens veiem un dia. Una abraçada
Hola Joan! Crec que inclús el mapa em sona d'alguna pràctica :-D
Great video, very informative!