| 0:00:00 | normalized to survive into every planet except an article over and over |
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| 0:00:05 | and overall in the world have i |
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| 0:00:08 | scenes such a variety of it sedimentary anamorphic large parcels balls |
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| 0:00:14 | complex landscapes to interpret |
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| 0:00:17 | such a variety as anywhere else in the world in a single day |
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| 0:00:20 | so you just go down the road and you meant to a new world |
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| 0:00:23 | i'm leon long |
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| 0:00:25 | and i'm a repressive geology at the university of texas at austin |
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| 0:00:30 | i came to u t |
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| 0:00:32 | in nineteen sixty two |
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| 0:00:34 | so you do the math i'd around for awhile |
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| 0:00:37 | a former research i use the occurrence are very tiny amounts of naturally occurring redirected |
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| 0:00:44 | we have the breakdown of nuclei of atoms and the adam that's there to begin |
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| 0:00:50 | with a scroll the parent adam |
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| 0:00:52 | a some type of a particle comes out of the nucleus and the a random |
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| 0:00:56 | the remains after that event called radioactive decay of that is called the dollar right |
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| 0:01:00 | so as geologic time goes on the amount of daughter is increasing the amount of |
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| 0:01:05 | remaining paradise decreasing this balance between the water and parent is the basis of the |
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| 0:01:10 | geologic law |
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| 0:01:12 | and so using radioactivity we can't eight inch and if that's and we're talking now |
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| 0:01:17 | millions and billions of years ago you're going back four point five billion years for |
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| 0:01:23 | example so i art |
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| 0:01:26 | i feel so fortunate to be located in austin texas because it just so happens |
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| 0:01:31 | that taxes is comprised that i have for those and |
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| 0:01:35 | large areas are called in geologic provinces |
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| 0:01:38 | austin is right on the boundary between two would be is |
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| 0:01:42 | and there is a third geologic province that's |
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| 0:01:45 | about an hour's drive away and so there was a lot of variety |
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| 0:01:50 | within easy access i teach introductory courses |
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| 0:01:55 | beginning geology |
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| 0:01:58 | this particular porous the time on at the moment is a an intruder introductory field |
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| 0:02:02 | course |
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| 0:02:04 | and it's rather unusual |
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| 0:02:06 | it's for students who were not majoring in geology there are majoring in just everything |
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| 0:02:11 | else |
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| 0:02:12 | many of them are intended to become teachers |
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| 0:02:15 | here we are it make any false they are this is one of our projects |
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| 0:02:19 | and i think you can see |
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| 0:02:21 | one of the falls and the background |
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| 0:02:24 | you're looking at onion great |
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| 0:02:26 | the falls are coming over image of limestone |
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| 0:02:31 | next and with the limestone or layers of volcanic rock because |
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| 0:02:35 | eighty million years ago there was a pretty good pretty good okay over there are |
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| 0:02:38 | just about a mile away from us |
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| 0:02:41 | and the volcanic rock is this is this brings up right here |
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| 0:02:45 | as you can see that all the lines so there's more of a |
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| 0:02:48 | tan to buff coloured |
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| 0:02:50 | the kind of gear that we used in the field course is really extremely simple |
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| 0:02:54 | you got the have a backpack the whole your stuff |
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| 0:02:57 | you have a special compass call they brought to encompass which is specially designed for |
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| 0:03:03 | geologist expensive than most campuses you have your base which would be of topographic map |
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| 0:03:09 | we may have a geology timbre the chip on a rocky of it if we |
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| 0:03:13 | want together a piece of but |
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| 0:03:15 | we have a hand lens |
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| 0:03:16 | this one hand lens looks like |
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| 0:03:19 | we have aerial photographs |
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| 0:03:22 | we have a piece of plastic over the photograph which enables us to draw aligns |
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| 0:03:27 | with our pencils workaround of the field |
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| 0:03:30 | and we make a geologic map |
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| 0:03:32 | and a geologic map is a representation of the different kinds of geologic formations and |
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| 0:03:38 | see not the surface of the year |
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| 0:03:40 | we have some nice projects the right in austin of nicotine false state park right |
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| 0:03:45 | at the edge of this afternoon we're going to go to muppet now which of |
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| 0:03:49 | a lot however we're going to go to a saw functional three where we have |
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| 0:03:54 | to interpret of them looking at |
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| 0:03:57 | we can go here and there are within that out then we really a dollar |
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| 0:04:00 | we go typically west of here there was a large area |
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| 0:04:04 | whereas the wasp and that's called alana uplift and its full of ignorance of arts |
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| 0:04:08 | and that were very large and a lot of sedimentary rocks as well as more |
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| 0:04:12 | ancient h that we have here |
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| 0:04:15 | and so by just driving around we see all this improbable variety |
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| 0:04:19 | one thing that they may be doing we have what they burn in the scores |
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| 0:04:22 | is to teach some geology to their students someday |
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| 0:04:27 | but even if they don't do that even if they end up and some other |
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| 0:04:30 | profession what we learn is just an m x amount of things about the earth |
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| 0:04:36 | not only to understand it but |
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| 0:04:39 | it is my contention that if you understand the your if you appreciate of more |
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| 0:04:42 | it's actually it's actually more beautiful to you because you understand how about you that |
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| 0:04:47 | way |
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| 0:04:58 | we are having a lot of slot |
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