Showing posts with label geology. Show all posts
Showing posts with label geology. Show all posts

Sunday, September 22, 2019

The Riddle of Red and Black

Guy Noir, the Prairie Home detective, spent many years trying to puzzle out answers to “life’s persistent questions."
Some of those life questions are very important, such as how will I make a living?; what career should I  choose; is there life after death? 
Others are not so important as that, but nevertheless persistent, which is to say. . . they keep coming back again.
This morning I find myself researching, in order to answer a question that has perplexed me for a long time, ever since Pat and I started visiting the Hawaiian Islands about a dozen years ago.
The question is: What’s up with these red rocks and black rocks that seem to constitute the entirety of this Hawaiian island archipelago?
Spoiler alert: I haven’t completely figured it out yet. I will be describing herein my path of wonder, not necessarily giving you an informed report on the subject of red rocks/black rocks in Hawaii.

While I have not yet fully discovered why some Hawaiian rocks are red and others are black, I have managed to gather some learning along the way.
In many ways, I am person who is driven by an appreciation for lifelong learning.
The ancient dynamics and pyrotechnics through which these islands were formed is described in noteworthy detail here:
You can learn far more about this subject by following the above link. 
But getting back to my little take on it . . . In our ten visits to Hawaii, the photo that I snapped which best shows what lava looks like is:
Formless

This dark gray/black solidified lava flow is called pāhoehoe. You see it throughout all the islands, but mostly on the big island, Hawaii, because it is the newest island, and the one that still displays an observable continuance of recent and still-active volcano activity. It’s fascinating stuff, especially for a curious person like me who took a geology course a long time ago.
We enjoy traveling these islands, year after year. In noticing the vast array of different volcanic rock formations, this question about the red rocks keeps popping up, as “one of life’s persistent questions.’ This never fails to fascinate me. 
Here’s a pic, taken a few years ago on Maui, that shows two layers of black rock with a layer of red rock between them.
RockStory

So we can see that there is some kind of “story” told in these rocks, some sort of history.
Geologic history, Earth history. Hawaiian Islands are perhaps the best location on the planet to identify features by which Earth reveals itself, by telling, in the rock, its own story.
SO, what about that strip of red rock in the middle? you may ask? I’m glad you asked.
I don’t know, but I did ask a Hawaiian about it.
As she began driving our tour bus up into Waimea canyon, I asked Jana about the red rocks, and she said the difference was:
“Rust.” The red rocks have rusted. And, she said, they are older.
I greatly appreciated her immediate answer. It has helped me a lot. It does seem, however, a little too simple for my over-active mind to accept completely. Nevertheless, her concise explanation was confirmed a few days later when I found online a Galapagos report from Cornell U:
Herein I found an authoritative source confirming that the difference in color, in some cases, is “a reflection of age. The older ʻaʻā . . . has weathered and the iron in it has oxided somewhat, giving it a reddish appearance.”
And that’s good enough for me to understand a little bit about what is going on in these vast, ancient islands, which represents processes that have built up our vast, ancient earth.
Meanwhile, back at the beach, I found, two evenings ago, a different working out of the red/black interface.
KaRoksRedBlk

In this scenario, I surmise that, somewhere along the ancient timeline, red rocks were weathered down to red sand and grit, then deposited at low places. During that time, the volcano or the weather must have torn black boulders loose. The black rocks tumbled down into red sands as what you see here. It appears to be black lava rocks trapped in red sandstone, nowadays being gradually dissembled by the thrashing Pacific Ocean.
Or something like that. That’s my answer for the riddle of red and black, one of life’s persistent questions.


Saturday, November 15, 2014

Denying Climate Change

The critical question about climate change is not whether it is happening or not. The point is: what should be done about it, and perhaps more importantly--what can be done about it?

The earth and its biospheres have always been changing. There is no doubt about that. Scientific research and exploration have provided ample evidence of that truth, geologically and biologically. Miles and miles of extruded, eroded, sedimented, metamorphated, conglomerated rocks and minerals have convinced most of us who are paying attention that the world was, is, and will always be in flux.

In our present age, are emissions from human activity inflicting destructive effects on the earth and its inhabitants?

Yes.

Undoubtedly, aye, but here's the rub: As far as general mankind is concerned, "climate change" will never be anything but a perpetually unproven scientific hypothesis, which is apparently morphing, as the earth itself is, into a political movement that is misunderstood by the masses.

The political movement, which claims to be acting on behalf of mother Earth herself and her inhabitants--that political movement-- is founded upon unquantifiable theoretical snapshots of a gigantic moving target, and hypothetical random samplings of constantly shifting sands.

The resulting politics and ideology of the climate change believers will become increasingly restrictive, and ultimately repressive. These believers are starting to get zealously mad and revolutionary, similar to the Marxists/Bolsheviks about a hundred years ago.

And look what happened with that. Marx had figured out a few things about human commerce and wealth accumulation, but his proposals yielded a new eschatological layer of ideas for humans to argue, fight about, and wage wars over.

Like Marxism, the political/economic outcome of climate change agitprop will become as oppressive as the big bad wolf himself--carbon-spewing Capitalism. And in the long run, the end-game is the same: who is going to take control of the means of production?

To XL-pipeline, or not--that is the question. But it's only the next point of many contentions yet to come.

However all this homosapiens tragicomedy plays out, some people will come out on top of the imposed carbon-squelching or carbon-permitting policies; others will be ground down beneath the weight of it all. Some will lose; some will win.

Speaking of win, think of it this way: WIN. WIN was the acronym touted by President Gerald Ford, long about 1975. It stands for: Whip Inflation Now.

The Climate Change idea is like that. Everybody knows, or will know because they've been taught about it, that human-caused climate change is destructive. And everybody knows that something should be done about it. But most people don't really understand it. It's like trying to understand inflation.

And now, by the way, in Keynsian-speak, inflation has morphed into a thing that is not so bad after all. Because, when properly bridled, it protects us from being gobbled by the new big bad wolf of economic tectonics--deflation. We have now a theoretical target of 2% inflation, just as we probably have somewhere in a Kyoto or Copenhagen consensus, a target of ----kg/day carbon emissions.

My theory is that the general body of mankind will never truly understand the dynamics of climate change, just as we heartland flyover dweebs will never fully comprehend the economic forces that push our meager assets and never-ending liabilities around like toys. We never will grok it.

The concept of climate change itself will probably always be misunderstood, mis-applied, miscommunicated, and probably--dare I say it--mistaken, just like the rapaciously exploitive practices of capitalism have been, and just as the revolutionary, anarchic thrusts of Maxism have been.

But if people ever do comprehend the immense implications of climate change and its proposed remedies, they will achieve that understanding through education, not political deprivations and repression.

So all ye climate change believers out there--get busy educating us deniers out here, because that's the only way we'll ever understand it. Teach on.

Don't try to choke us with regulations and treaties.

Forty years ago, when I was graduating from LSU, I was an environmentalist of sorts, and antiwar also (my draft number was #349). And I really did believe, as I still do, that we humans should not pollute the earth.

Now there's a good idea: do not pollute. Which reminds me of an old slogan, similar to the WIN thing:

Give a hoot; don't pollute!

I think some fella named Woodsy Owl came up with that one. He came along after Smoky the Bear had set the tone for environmental awareness.

I believe the Environmental movement should have stuck with that motto, instead of complicating the issues with all this "climate change" and "global warming" effluence. Effluence is, when you get right down to it, worse than affluence.

Affluence is kind of nice to have, and not as outdated as the climate change zealots would have us believe. The result of reasonable affluence is that folks will settle down somewhat instead of rampaging through the streets and looting the system.

While progressing through youth and middle age, my environmental zeal has toned down a bit; it took a back seat to establishing a homestead, a household and (dare I say it) a coital family. No ZPG for me and my fruitful wife.

Now I've written my way into a Saturday sunrise. Maybe it's time to hop on the Vespa and make a run to do some errands. On second thought, take the car, make a recycling run. If there's a way to avoid emitting carbon, I haven't figured it out yet, and I don't know if we ever will, especially with China and Kilauea doing their thing on the other side of the world.

my song about it: Deep Green

Glass half-Full

Monday, June 25, 2012

Speculating on a Stratified Story




Wandering on a rocky Hawaiian shore we discovered this layer of red rock stratified between two layers of black rock. I was wondering, how did this happen?

I am no geologist, but I have done a little reading about the earth and the rocks within it, and some exploration, as you can see here. That's my hand in the pic.

In offering a layman's analysis of this geological puzzle, I must begin with a basic fact: The Hawaiian islands are all exposed parts of one very big volcano, situated on the Pacific Ocean floor three miles below the surface, but extending high enough to protrude into air.

In this particular case, the red strata, formerly hidden within massive black/gray lava fields on the edge of Maui island, has been exposed by the erosive action of nearby ocean waves that have been perpetually crashing upon these rocks for a long time.

What I do now about the black layers is that they are igneous rocks formed by volcanic lava, which had flowed from the erupting earth fissures many years ago.

I'm not so sure about the red streak. My investigating touch (shown above in the pic), indicated that the texture of the red rock is granular, sandy, which is different from the feel of the black layers below and above it. This apparently sandy composition may indicate that the red layer is sedimentary rock. If that is correct, we could say that the red, iron-bearing deposit was laid by weathering wind/water forces, and laid upon the black basalt lava rock below it.

Presuming that my sedimentary assessment contains, perhaps, a grain of truth, we could infer that the red streak may indicate a more recent epoch of time when the volcanic lava flow had ceased, enabling earth processes to leave something different for awhile--say, a few thousand years? I don't know.

A geologist could tell you. On the other hand, he may blow my whole theory to smithereens, just like the volcano, Puukukui, blew all that black rock into the location you see here.

Whatever that red layer is, obviously it was later covered by a another black volcanic lava flow, and thus was covered for many an eon until the Pacific Ocean knocked the shoreline around and taught it, and us human inquisitors, a thing or two. If you can help me interpret this stratified story, please do. Rock on.

Glass half-Full

Saturday, July 16, 2011

Volcanic legacy

‘T’was many and many an eon ago beneath Pacific deep

the fiery earth spewed out a plume of magma lava creep.

The hot stuff came pouring out so fast from cracks in the ocean floor,

it flowed and popped and fizzled and then it spewed some more.

It piled up so high it reached the top of Pacific ocean waves

with mounds and mounds of lava rock and lumps and holes and caves.

Two miles high the molten stuff came puffing above watery swells;

It sizzled in a burning lump , and looked like a thousand hells.

When at last it settled upon a large and lumpy, bumpy, volcanic shape,

the wind and rain came to do their thing to form Hawaiian landscape.



But that reshaping job would take ages of geologic work,

through which the cone was slowly worn down and lava often would perk.

Then one day a little seed came upon a storm-tossed birdy wing

and nestled itself into the barren rocky dusty sandy eroding volcanic thing.

And so from lifeless lava rock and sterile stony crater dirt

there sprouted up a sprig of grass or lichen or some other rooted wort.

The little plant popped up a flower and then it dropped a seed;

Yes, there began the slowly spreading plant kingdom proliferating deed.

God only knows what the newly established plant may have looked like,

‘though here’s a fellow who suggests the scene while on a crater hike:



As time went by more birds and seeds managed to hitchhike ocean winds,

to extend the nascent colony ‘s wispy, leafy, seedy trends.

It may have been a scene like this, with another plant or two,

though disregard the guy who’s standing there to show it all to you:



Meanwhile, in the midst of all the crater’s lava dusty stone,

Now and then the volcano thing would erupt and do a cone:



Eventually, God’s creative work of greening, growing life

established a thriving , spreading colony to break up the rocky strife.

Now here’s a lovely lady who views the crater in today’s volcanic scene,

while hubby snapped the pic; he’s the one in shirt of plaidy green.



But near the ocean shore below volcanic magma geology

A big tree grows that surely shows God’s artistic biology.

Now here we depict a God-grown tree, and standing there a fool there be,

to celebrate exquisite biology, that thrives on ancient geology.



Yes, Hawaii is amazing with its volcano, its flora, fauna, and deep blue sea,

simply astounding , overwhelming, mystifying this birdbrain—me .




Glass half-Full