The Bizarre Rocks and Landscape of Chaos Jumbles, Lassen Volcanic National Park, California 

I did hike to Bumpass Hell in a total socked in whiteout and rainstorm (thanks, remnants of Hurricane Hillary). I did videotape some sections but you literally couldn't see the steam rising from the fumarole because of the weather. I need to look at the footage, but I doubt it's that good so we'll see if I post it or not.

Rubbish. Eyes do not "glow". That implies a source of light inside the eye itself.

What time of year? Sounds like you were pretty high up. (My home turf.) Not much eatin' for bears in the high rocks. There are cougars, although personally in my 70 years I haven't seen one. Maybe "Tigger" was a good guess!

@@daphnewilson7966 Summer at 9000’ ft. Just below tree line.

It's a really great park.

What a great experience! I went down a couple of times, 50 years ago. My baby bottles were warmed at "sulphur works" along the highway. Not being able to go where I want is sadness, now.

Photobomb courtesy of my truck.

Awesome! Thank you!

After growing up spending Summers 11 miles downhill from the Park, only late in life have I gotten into the rich history of the area. Chico road to Silver City, Idaho! (2d greatest silver strike after Virginia City, Nevada.) Nobles Road easier than Applebee's Trail. The Modoc War. Timber boom on Shingletown Ridge. This educatiion about a landscape dear to my soul is dear to my heart. Thank you1

Welcome aboard my channel. Glad you liked this one and hope you enjoy perusing the other existing videos.

My Mom bought a place 11 miles from the Mountain in the middle of WW2. It has always been magic to me, yet to learn this geologic history is so great. But Lassen has been a notable human history crossroad: Noble's Trail, The Modoc War. Logging boomtown Shingletown. Chico Road to Silver City, Idaho; second richest silver strike next to Virginia City, Nevada. Important immigrant trail went past Cinder Cone, I envy you that you have been there, and I have not.

Yay, Lassen Volcanic National Park, even burned even up to the Peak, Dixie Fire relentless. But the creeks still flow, and the wildflowers still bloom.

Glad you enjoyed it

Thanks for sharing. Glad you enjoyed this.

Welcome aboard. Hope you enjoy the existing videos along with more to come.

I did go there. It was a great lava tube. Thanks!

Thank you for your support.

All about the buzzwords....

Yes, so much to cover. I videotaped more stuff around Bumpass Hell and such but the weather was so socked in that I am not sure it is worth posting.

I, Dave the RockSlayer, am a retired professional geologist; but never practiced in the field of volconology. Therefore, please take my "reply" with a grain of salt. I think I was wondering something along the same lines as you. I always thought "xenoliths" were older than the rock which contains them. It would seem to me that the widespread distribution and lack of significant evidence of "chill zones" around the mafic xenoliths suggest they represent pieces of older rock incorporated (or pushed) into the rhyodacite producing magma while it was still fluid. I'm sure I misunderstood Shawn; but, it seemed to me he was suggesting the mafic xenoliths were incorporated into the rhyodacite AFTER it cooled! Don't get me wrong, I'm not challenging him; I am just confused!

I, Dave the RockSlayer, am a retired professional geologist; but never practiced in the field of volconology. Therefore, please take my "reply" with a grain of salt. I think I was wondering something along the same lines as you. I always thought "xenoliths" were older than the rock which contains them. It would seem to me that the widespread distribution and lack of significant evidence of "chill zones" around the mafic xenoliths suggest they represent pieces of older rock incorporated (or pushed) into the rhyodacite producing magma while it was still fluid; and that the presence of the xenoliths caused varying degrees of chemical weathering within the rock that resulted in producing the instability of the cone resulting in the rockfall.

I'm not familiar with the Hot Rocks area.

Great question and one that I don't have a perfect answer for. In reading definitions for both, they seem to appear the same. I used "quenched inclusions" because that was the name used in the reference I read: pubs.usgs.gov/publication/sir20175022K2 In looking at magmatic enclaves, this was a nice writeup with illustrations: geologyistheway.com/igneous/magma-mingling-and-mixing/

No ash particles in the rock. It is lava that was extruded from the vent as thick, pasty lava not explosively along with ash. The rock is totally made of crystals (along with these inclusions).

Obsidian is quite brittle and unlikely to be found on beaches. I doubt there would be amber either. More likely to find quartz based material such as jasper, agate, chalcedony. A bit north of Yachats is Beverly Beach which has nice fossils (sometimes in rounded concretions). Great geology all along coast. Coos Bay area is nice. Sunset Bay State Park (southwest of Coos) has some nice strike slip faults at beach. Maybe get the Roadside Geology of Oregon book as a good reference.

@@shawnwillsey so much for that information. I had hoped to make it to glass beach but when doing a bit of research, it appears as though so much of it has been taken that there’s only white and green glass.