‘Nick From Home’ Livestream #27 - Straight Creek Fault

[@cmiller2544]

Thank you Prof Nick! I so enjoy your humor and thoroughly enjoy learning about geology from your At Homes lectures! I am watching the At Home lectures after watching the A to Z serieses. So wish I could have watched these live during the pandemic.

[@numlockkilla]

Thankyou Nick. We love what you have done and are doing for those who choose to learn. Your appreciated. From Iowa

[@deborahferguson1163]

So enjoy these lectures. Thank you for doing this, especially these days!

[@caseyjude5472]

I wish I could watch live! As an “essential” I work every night, but as an anxious person, I don’t go in until we’re closed to the public. So I miss most of the live streams, watch when I get home & finish over coffee the next day. I really look forward to these & am so thankful!

[@davidbrody307]

Instablaster...

[@virgilviereck9307]

Hello Nick, Virgil from Ferndale. Just checking in, and wanted to thank you for all your videos. I mean, seriously, thank you sir for your contributions to the world. I know you’ve encouraged us youngsters of around 60’ish, to come in for some classes. I think if I was quite a bit better in the advanced math, that you’ve explained is needed in the geology field of study. Aside from the small issues, if I was in my youth, and as interesting as I’m geology to be, this is something I’m 100% sure, I’d have been, “all in”, in this field of study. I spent my life commercial fishing from the Bering Sea in Alaska, to SanFrancisco Ca. Back to geology, thanks a million for all your videos. To say they are very interesting, is a huge understatement. To be honest with you, all of this stuff is nearly unbelievable. But I’m in. You have my undivided attention. This stuff truly amazes me. Even though, other than sharing this information with family, Due to my health, to attend classes isn’t possible. But I’m still in, with undivided attention. So I hope you don’t mind the old guy in the back room leaning in & listening. Nick, as many videos that I’ve watched, I just wanted to say hi and thank you. I learned last night, that my niece has been accepted into Central U. I told her about you. And one day, in the next few years she might be attending your class. All right sir, thank you again for your informative knowledge. I’ll occasionally say hi, as you have proven to me how busy you are. So all the best Nick. Thanks millions of years. Sincerely, Virgil Viereck Jr. Ferndale Wa. [e-mail], 360-961-1312

[@dennisalbertson9335]

I enjoy the lectures a lot.

[@lizh3896]

I'm way late watching this episode -- almost June. You asked what we thought of it: I loved it -- really interesting, and makes us think! Thanks for doing a 'new' one! (I'm an ebrg neighbor)

[@stormysampson1257]

Inside is best. Nick, this pandemic ain't going away for years! This is not temporary, my opinion of course. Make yourself a corner on that gorgeous porch...with that screening I talked about. All you have to do is bring your drawings, maps, books, publications and push the buttons and we have "Nick at Home"...YAY!!

[@janerussell3472]

Lot to take in. I'm going to have to watch several more times. It's good to know people are asking difficult questions, though. Because we're dealing with events in deep time, it's difficult to piece together all the pieces. Without the Thomas Dibleys doing the field work, we couldn't piece things logically together. It world all be what you call "a hornet's nest."

[@rbollard1]

Holy cow, two hours late. I'll never graduate!

[@luthermclain2959]

Been missing the evening live streams, but looking forward to the weekend. And as far as location goes, I'd say wherever works best for you.

[@AvanaVana]

@1:04:52 Two observations about rotational movement and the SCF - 1.) rotational movement initiated in the Eocene, right? Around the same time the SCF was active. 2.) The sense of movement on the SCF is right-lateral, and the sense of rotation of terranes in Eastern Oregon is compatible with that sense of movement, ie clockwise (right-lateral = clockwise) This would lead me to believe the two are related, except for the fact that rotation continued well into the oligo-miocene, so unless there is a younger fault to which right-lateral movement was translated, which would be a younger analog of the SCF, it remains unclear why the SCF would stop at 34 Ma while rotation continued and how additional rotation would be accommodated unless it was purely by compression.

[@amandataub842]

Jennifer Hackett is a real treasure. There is serpentinite in the Blewett Pass area. I know, because I gathered some. It is really easy to carve like soapstone. There is schist with garnets up the Lower Skykomish River. There is a mine up there that my family had permission to explore and gather some garnets. I still have them.

[@gferguson5633]

I liked the adventure theme of the backyard.

[@markwilson8723]

Following your imagery of the currant box, I envision the entire planet covered by current boxes on the move at any given time. I imagine faults as lines between boxes (or through boxes as you demonstrated) that end or merge with other faults. Either way, the force of movement dissipates at the ends of the fault, correct? If the Straight Creek Fault is shifting in a strike slip fashion (shearing) , is there evidence of compression and pulling apart at the ends of boxes as a general rule?

[@PlayNowWorkLater]

Hey Nick. If you’re looking for a way to expand this lecture, maybe have a deeper look at exceptional strike slip faults of the Northwest. By that, I mean strike slip faults that have had extreme movement, like the example used in this episode., I.e. hundreds of miles. Other faults with similar motion towards the North, and following the older pattern that Baja-BC travelled. There is a lot that has happened in the accreted terranes since Baja-BC. The Tintina (Tin-tea-na) trench in my neck of the woods (The Yukon) is another example of more recent extreme strike slip motion.

[@kinte1870]

OMG I can't believe I just missed a Nova special on the ice age floods you did a lecture on. I caught the very end and realized what the program was about .

[@stormysampson1257]

What Nova special are you talking about? Nova disappoints me. Nick does not.

[@kinte1870]

@@stormysampson1257 I can't remember the episode name but it was about the terrains of the Pacific northwest . I caught the last 5 minutes.

[@kinte1870]

@@stormysampson1257 It was about how the ice age floods helped shape the terrain. Even had that big glacial lake Nick talks about.

[@stormysampson1257]

@@kinte1870 I went to college for 6 years in Idaho and we were taught that there was only one flood. And now we think there were 100 or more flows. I always leave doors open. I love the Pacific Northwest. Except finding Central Oregon has far worse climate and predictability than ALASKA. How did this happen? We are at the 4000 ft elevation but still.

[@kinte1870]

@@stormysampson1257 I'm from Alabama and I love it too. I like geology so learning about other areas is an interest.

[@chrisburrows2358]

having watched nearly all of your talks, not live as live in the uk and not usually online when they start. Your talks are the best! I have a question about the Kula and Farralon plates and the way North America is moving. Could the movement actually still be happening by the way of the clockwise rotation of the Pacific Northwest? could a small piece of the Kula plate be under the pacific northwest / N America and its kind of moving slightly northish?

[@stormysampson1257]

This clockwise rotation from south to north is a new one for me! Why does it STOP? Cool classes by this guy, huh!

[@jeremiahmiller6431]

There's another easier explanation for the clockwise rotation of Oregon - it's being driven by a similar ccw rotation of the Sierra Nevada block (like two gears meshing), which is in turn being driven by the extension of the Basin and Range province to the east.

[@stormysampson1257]

@@jeremiahmiller6431 I think I heard someone talking about that. Makes sense. That is why its weird this movement just stops. Where is that energy going? Nice note, Jer!

[@jeremiahmiller6431]

@@stormysampson1257 Well, it's not _just_ stopping. The northern edge of the Oregon rotation is crumpling up into the Yakima fold and thrust belt, which (conjecture here) could be the initial stages of a small fold-belt mountain range. And (again conjecture) a lot of the "crookedness" of the San Andreas fault could be the Sierra Nevada block shoving it westward, or maybe some interaction around the Mendocino triple point taking up some of the motion. Point being, you can't just move one piece of crust around without seeing the effects in the surrounding crust - but if you look hard enough, you _can_ see those effects today.

[@stormysampson1257]

@@jeremiahmiller6431 Grins, has anyone told you that you think too much? ha ha ha ha! I love reading others thoughts who are using what they've learned to answer their own questions. Thanks...

[@stormysampson1257]

Why oh why does this rotation STOP up in North East Washington and Canada?

[@Valkyrie801]

It would appear over time the earth's crust, and tectonic plates flow around, and are not static. We simply live not long enough to see this happening, millions of years could be an instant for a rock. :)

[@travis303]

Imagine if Jane Schubert were watching this livestream

[@lizj5740]

It's not you, Nick. The comments scroll to the end automatically when additional comments are added.

[@melaniehefner1098]

I love the walking field trips.

[@Karisutin]

We have serpentinite in Knottingham, PA conveniently located by Herr’s potato chip factory. The local church is made from serpentinite as are many University of PA buildings

[@lizj5740]

I have two 15-million-year-old clam (?) shells found when the foundations were dug for one of the nuclear power plants in Pennsylvania, possibly unit 2 or 3 of Peach Bottom. My boss gave them to me about 50 years ago. So some of Pennsylvania was under the ocean at one point.

[@Karisutin]

LizJ Cool!!!!!!

[@zuestoots5176]

a CAR can be louder then stock while still having mufflers. Mine has 2 mufflers (it came with only 1) and its louder then stock by a lot.

[@billblomgren9618]

Looking at 3 million years between the "big parking" and the start of the fault... is is possible that the big landmass sticking itself to the Seattle area may have been compressing the rock east of it for a few million years, and finally found the breaking point on the fault?

[@Slowmodem1]

Does the live chat disappear when it's over? I can't see it on the laptop. :(

[@dalechristensen3433]

So does the Straight Creek Fault theory eliminate the theory that the Blue Mountain island arc was part of the Farralon plate?

[@sidbemus4625]

Better late than never..from Canyon Lake

[@philbuglass4857]

770 people on the livestream, yet only 600 likes?? What's up with people?

[@edwinreece438]

Nick I noticed your fingernails are trimmed way back. Then I found out you played guitar. The first thing my guitar teacher did was have me trim my nails. BTW, I was a muffler boy when I was much younger. Those were the days!

[@maryseeker7590]

Interesting! Is the spreading ridge still spreading as it is subducting underneath ? If so can you see evidence of it on the surface today?

[@conniegalassi9167]

Nick did you feel the earthquake in Idaho?

[@sdcrilly]

You have better lighting on the porch and we can see the computer better.

[@timteevin4517]

Evelyn is actually 62 years old.

[@adampryor1289]

I use to be a "muffler boy" as a teenager. lol Now I know the amount of aggravation I must have caused for my parents and neighbors.

[@stormysampson1257]

It is great to grow up, isn't it? Except that without amnesia one gets to 'look back' and be embarrassed. Without being able to look back and being EMBARRASSED one is not growing up...

[@swirvinbirds1971]

@@stormysampson1257 So true!

[@Yaxchilan]

Hi nick WHY iS it called A NORMAL/REVERSE fault

[@MrFmiller]

I’m glad that after 34 million years you figured out why the spreading ridge caused the Straight Creek Fault. If you figured it out sooner you’d be very old.

[@gferguson5633]

Outside is more fun

[@redlester7349]

Since the end of the 2021 Geology 101 class I've been playing catch-up on these live streams. Just a thought if you're struggling to get your head around how they arrive at the date range for the Fault being active :- If you find rocks on the fault line that are 33 million years old then they haven't moved 34 million year old rocks haven't moved But 35 million year old rocks are now off-set by 1 mile And 36 million year old rocks are now off-set by 2 miles ... So 45 million year old rocks are now off-set by (checks maths) 11 miles While 46 million year old rocks are off-set by 12 miles And 47 million year old rocks are off-set by 13 miles BUT... 48 million year old rocks are also off-set by 13 miles So... we can conclude that the fault was active from 47 until 34 million years ago. And has been moving at an average of 1 mile per million years.

[@kenlee5509]

Tech answer; The back of your head looks fine, good light, and good luck. Muffler boys; louder and slower every year. Will it lead to lots of old guys like your neighbor? No, the cars they like are Plastrash.

[@robchristiansen1710]

The background noise I didn't think was all that bad. you get all upset, you shouldn't, it's not good for your health. It's been my experience that it doesn't Change anything. Please remember you have a bunch of little kids watching this.

[@rongaul8169]

Your muffle guy...here I call them sewing machines, because they try to make a little 4 cylinder car sound assume. (Not.)

[@stormysampson1257]

You gotta watch Jay Leno...

[@rongaul8169]

Stormy Sampson (fixed my spelling error.). I’ve seen J’s garage. He’s got a few impressive vehicles.

[@stormysampson1257]

@@rongaul8169 I simply adore Jay. For being filthy rich he is a real human that knows vehicles so damn well! I love this show on cars, wish I knew a bit more I had to take home economics not mechanics in high school. Grrrr.

[@rongaul8169]

Stormy Sampson (clarify: I’ve seen J’s garage (on tv)...) never to late to take a night course or other. I made sure my wife, girlfriend at the time, knew her way around a car. ( Back in the 90s.). Loved the look on a mechanic’s face, when she started talking about the brakes. Everyone should know this stuff.

[@stormysampson1257]

@@rongaul8169 Oh sweetie. What could be more sexy? Truly. I am so pround of your wife and glad she had some mechanical genius in her! Lots of people would struggle to understand mechanics. Humans don't like pain. So you are one lucky dude that you picked a great partner, friend. Get a nice workout matt for your garage, grins. A happy ending!

[@snurkergerm6168]

13:07 : adding a start time would be useful for those of us not on a geologic time scale

[@briane173]

26:10 Awww, how could you do that to such a pretty young girl? And express so much satisfaction afterward? BWAHAHAHAHAHAHA.....😈

[@TeePole59]

Muffler boy had Nick a little testy this day.

[@stormysampson1257]

BILIPID MEMBRANE. Nick! This is flat earther type talk and thinking. Oh man, I have little hope for humanity. I have more time to spare these days, Nick. So I spend more time on the internet and what I've learned is that we humans are unable to clearly communicate!

[@stormysampson1257]

Mixing organic life with geology. This should be oh so much fun.

[@goththicus]

Porch

[@TheFirstBubbaBong]

Set up the chalk board on the porch and get over the fact you have neighbors now. Old fogey!