. . . I've been told that I write novels for email messages. Perhaps this is the way to go. I'll try to make each entry, or Gemstone, a "precious" one. On mediocre days, all I might be able to produce is a "semi-precious" entry. In any case, an entry might be a "neat" Gemstone--something that is uniquely mine.

Showing posts with label caves. Show all posts
Showing posts with label caves. Show all posts

Saturday, July 28, 2012

The Largest Cave in the Lakes Area

After a day out in the sun and heat and on the water (we rented a pontoon boat and tube for the afternoon yesterday), we decided to stay out of it all and explore Jacob's Cave in Versailles. Jacob's Cave is the largest cave in the Lake of the Ozarks area, 1/2 mile long, 70 feet down, and completely accessible for people with disabilities and baby strollers. It was the first commercialized cave in the area, opening in 1932 to tourists. At that time, people walked on wooden planks and used kerosene lanterns to explore.

A beautiful "room" at the end of the 1/2 mile trail
According to the Jacob's Cave home page (linked above):
"Jacob's Cave is famous for its depth illusion, reflective pools, ceiling sponge work, prehistoric bones (mastodon), bear, and peccary), and the world's largest geode. On the mile-long tour you will see every type of cave formation imaginable, from millions of "soda straws" and massive stalactites and columns, to delicate helictites. Evidence of six ice ages and three earthquakes can be seen in the cave. The temperature remains a constant 53 degrees inside the cave."
Cave "pearls" which actually do form around a tiny bit of sand
If you are interested in the cave formation and geology, visit this link: Jacob's Cave Geology. Of course I found it totally interesting and was glad to have something to read about the cave--much more impressed than information NOT available from the first cave we visited. Basically, the rock the cave was formed in is from the Silurian period 430 million years ago. The Silurian Sea was full of coral reefs and marine wildlife which created the dolomite rock that the cave was dissolved into. About 45 million years ago the area uplifted, forming the caves in the Ozark Plateau. Three earthquakes occurred in the area at 45 and 17 million years ago with the most recent being the New Madrid event in 1811-1812 at 8.1-8.3 magnitude on the Richter Scale. This event is written in every geology text because it is highly unusual to have such large earthquakes in the middle of a continent. The New Madrid earthquake was so strong that it forced the Mississippi River to run backwards for 6 days before changing its course when it started flowing toward the ocean again.
A column that has been fractured by the New Madrid earthquake
Jacob's cave was discovered by Jacob Craycraft, a miner in 1875. He may have gotten a map to the cave drawn by Spainards and found in the local library by Jacob. As Jacob was prospecting for new minerals he came across an animal hole along a fracture line and began digging, exposing a larger entrance that led him through the same 1/2 mile that makes up the cave tour. He autographed a stalactite with lead pencil, which still can be seen in the calcite. The cave has been known by man for 120 years and available to the public for 45 years. Click here for more History facts about Jacob's Cave.
Many soda straws decorated the cave ceiling

Wednesday, July 25, 2012

Ozark Caverns, a Winery, and a Little Dinner Cruise

What do two geologists do while in the Cave State? Visit as many caves as possible while they're there, of course!

Today we explored Ozark Caverns at the Lake of the Ozarks State Park. Unfortunately, we could not take cameras into the caverns because the park is guarding against "white-nose syndrome", a fungus that has devastated bats throughout the northeastern caves. This white-nose syndrome was first discovered in Missouri so to minimize the risk, they are really being strict. So I took pictures of the museum display boards.

Ozark Caverns entrance
According to a brochure (yay, a brochure!) found in our hotel lobby,
"a walk through Ozark Caverns is a journey into an environment where geologic process can proceed unhindered by many of the erratic, erosive forces that shape the surface landscape in the protected cave environment; dripping and seeping water can redeposit carbonate materials in the form of soda straws, helictites, stalagmites, and a host of other geologic wonders that can be seen in Ozark Caverns. 
Angel Showers, an unusual cave phenomenon, is a featured part of the Ozark Caverns tour. The never-ending shower of water seems to come out of the solid ceiling of rock."
Photo of Angel's Shower from the museum wall. There are only 4 showers like this in the U.S.
Something truly cool was seeing bear claw marks left in the sediment fill that came into the cave thousands of years ago. (I'll just mention that we read of many small critters that inhabit the cave from frogs, salamanders, bats, and little bitty invertebrates in the little museum). Middle son did count 11 bats while we were in the cave. Creepy little critters. We were told that the cave was about 300 feet below the surface and we walked about 1/4 mile in (1,400 of the 3,400 feet of passageway). We used lantern light to walk through the cavern instead of the traditional "lighted path" method--truly cool, but oldest son was disappointed that the cave features were not lit up.

And what do two geologists do after "doing" geology? Seek out the local winery for tasting, of course! We found one just down the road from the Caverns called Seven Springs Winery, which boasts of having 160 acres of vineyards. We tasted some Missouri wines and found them quite tasty. It was interesting to learn of grape varieties that I've never heard of before such as "Norton," "Vignoles," and "Rougon." They used a blend of grapes for their wines rather than a pure grape wine like "Pinot Grigio," "Chardonnay," or "Merlot." that I'm used to. The blends tended to be toward the sweeter end of the spectrum, which was really good. We got a couple of wines to take back to the hotel with us.

A large tasting menu with pretty wine glasses at Seven Springs
We spent the afternoon at the lake swimming for a bit before heading out to the Bagnell Dam strip and our dinner cruise on the Tom Sawyer Paddleboat. The food was good, being "picnic" fare with fried chicken, ribs, ranch beans, potatoes au gratin, cole slaw, and rolls. My youngest had 3 pieces of chicken himself. If only it weren't so darn hot, then it would have been a perfect cruise. I think it was still 100 degrees when we left the dock at 6:30 this evening. Sweat rolled down our faces and backs until we got into the air conditioned car!

The paddlewheel at the back of the Tom Sawyer
Thankfully, nobody complained about following our lead today. I get to be "Tour Guide Barbie" or "Cruise Director Julie" when we go on trips together and I take my job seriously! Tonight's plan? Stay in the cool air conditioned hotel room!



Tuesday, July 24, 2012

Bridal Cave

Today we went to visit Bridal Cave in Camdenton, Missouri, about a half hour south of where we're staying here in Osage Beach. Of course we left early in the morning so that we could try to beat the heat of the day with being out and about and not in the water like we were yesterday. Yesterday we spent hours at the lake, then ate lunch, then spent more time at the pool, then middle son and I went to the lake again. It was the relaxing day we intended for our first day here. But today a little bit of exploring!

The Bridal "Veil" in the Chapel
Bridal Cave was discovered by the Osage Indians centuries ago. It lies beneath Thunder Mountain and is said to be the site of the legendary Native American ceremony in the early 1800's. In keeping with the tradition of the Native American Legend (which I will include below), the cave can be reserved for a romantic wedding chapel. Of course, it costs money to do so. If we had such money we'd have arranged for my in-laws to renew their 50-year-old wedding vows.

Here is the Legend of Bridal Cave:

Centuries before the paleface found his way into the Ozark Mountains, this vicinity was inhabited by the Osage Indians.  Within the Osage tribe many smaller tribes were formed.  The following incident is a legend which brought romance and tragedy to this section of the Ozarks and gave the names to many places as they are known today.
Conwee, son of Chief Neongo of the Big Hills (a tribe of the Osage group, which lived on the north shore of what is now known as Ha Ha Tonka State Park), fell in love with Wasena, daughter of Elkhorn, Chief of the Little Hills, who lived on the north side of the Osage River near the junction of the Niangua, and greatly desired that she become his wife.  Neither Wasena nor her father looked with favor on his intentions, Conwee however was not to be discouraged.  He left his camp at Ha Ha Tonka one dark night with a number of his braves, crossed the Osage River near the junction of the Niangua and kidnapped Wasena and her companion, Irona.  Hastily, recrossing the Osage River, Conwee started back to Ha Ha Tonka.  As dawn approached and threatened to reveal them to their pursuers, they decided to stop at the cave, now known as Bridal Cave, and conceal their captives.  After a short time in the cave, Wasena eluded her captors and ran swiftly toward a high cliff that towers two hundred feet above the Niangua River.   When Conwee had her almost within his grasp. she reached the edge of the cliff and without even a backward glance sprang over the the brink into the valley below, choosing death rather than life with one she did not love.  From that day forward this cliff has been known as "Lover's Leap".
The fate of Wasena's companion, Irona, was very different.  She had long loved Prince Buffalo, another son of Chief Neongo of the Big Hills Tribe, and brother of Conwee.  After a period of mourning over the death of Wasena was ended, Irona and her Prince Buffalo chose to be married in the cave where she and Wasena had been held captive in the beautiful stalactite - studded room now known as the Bridal Chapel, and gave the name "Bridal Cave" to the scene of the nuptials. from "Indian Romances" by Col. R.G. Scott
Now, I give you this story here because I learned it from the Bridal Cave website. If I  hadn't visited the website, none of us would know the story behind the name. When listening to the tour guide, she said nothing about the Native American legend. She also said nothing about the geology of the cave nor the names of the cave features we saw. She never described what we saw: draperies, soda straws, stalactites, stalagmites....she did, however, mention that the water dripping down in the cave takes seven years to reach the formations from the surface and that the cave is 250 feet below Thunder Mountain. Another thing I could not believe was that there were no pamphlets of any kind describing the geology, history, formations, or anything. I asked. I guess they don't read pamphlets in Missouri.

The RockWall
But, aside from my complaints including hearing the guide mispronounce the mineral name manganese and the rock shop misidentifying a rock that was obviously a schist as adventurine the mineral (the mineral was in the schist but only as inclusions), the cave itself was quite beautiful. There were a number of "rooms" with fantastic draperies and columns and at the end of the trail there was the gorgeous Mystery Lake, which the guide claimed to be 35 feet deep. At the bottom of the lake were some timbers and a ladder that nobody knows how or when it got there.

So yes, visit Bridal Cave, but do some research before you go and learn about cave geology and formations so you'll know what you're seeing when you tour.

Saturday, November 12, 2011

The Land of Fire and Ice


On our second day of our road trip, we visited sights in El Malpais National Monument, again south of Grants but in between Hwy 53 and Hwy 117. We started off in “The Land of Fire and Ice” and visited the privately owned Ice Cave and Bandera Volcano.  Our first stop there was the Old Time Trading Post, built in the 1930s along with a saloon and dance hall. At the time the Zuni Mountain Railroad was operating. They kept their beer cold using ice from the Ice Cave. Now the Post deals in jewelry, rock specimens, and other wares from local Indian Tribes.

Bandera Lava Flow
Along the gentle hike to the Ice Cave, Aa lava jutted out on both sides of the trail. The Bandera Lava Flow formed as jagged, broken lava that formed when the surface cools and hardens while the lava underneath is still flowing. There are lava tubes, sink holes, and Indian ruins along the trail. At the end of the trail is a stairway down to the Ice Cave. The temperature in the cave never gets above 31 degrees Fahrenheit. As rain water and snow melt seep into the cave, the ice floor thickens and is currently 20 feet thick. The deepest ice dates back 3,400 years. The green color of the ice is caused by an Arctic algae. It is a natural ice box: 20 feet of ice (including the back wall) in a well-insulated cave, shaped to trap the cold air. The Ice Cave was known to the Pueblo Indians as the Winter Lake.
The Ice Cave

After we walked the Ice Cave Trail, we headed back toward the Trading Post and onto the Volcano Trail, which led to the Bandera Volcano. The trail wound through the lava flow, past a spatter cone, and through the trees (Ponderosa and Pinon Pines mostly). The trees often had their tops blown off from lightning strikes. We found out that the lava flow is rich in iron content, which tends to draw lightning strikes to the trees growing in it. At the end of the trail is the great crater left when the Bandera Volcano, a cinder cone,  exploded 10,000 years ago. The crater is nearly 1,400 feet wide at the top and roughly 800 feet deep. The elevation at the look out point is 8,036 with the top being 8,367. It is a very impressive crater.
Bandera Volcanic Crater

Next stop: Sights along Hwy 117 in El Malpais National Monument.

Monday, March 29, 2010

Spring Break Trip: Carlsbad

Carlsbad, NM....Wow, what a town. Not much here, really, besides one long strip of highway that appears like it has died a long and slow death. The Wal-Mart was a "happenin'" place though. And they do have a Chili's restaurant with really delicious cheese fries. Anyway, it is a place to stay and again, makes me thankful I live in northern New Mexico.

Carlsbad is located at the edge of the Guadalupe Mountains on the Permian Basin. It is part of that Permian shallow sea where a great reef formed some 250 million years ago.

We drove about 45 minutes southwest of Carlsbad to go to Carlsbad Caverns National Park. The park is part of the Capitan reef within the Chihuahuan Desert Ecosystem. Basically, that means lots of cactus species (in fact, more species of cactii than in any other desert) and shrubs.

The Capitan Reef (where Carlsbad Caverns National Park is) was mostly made of sponges and algae with the occasional shelled creature such as ammonites, brachiopods, or crinoids that were deposited and transformed into limestone. Over the past 20 million years this deposit has been uplifted and exposed. The limestone caves were formed when slightly acidic groundwater seeped into the cracks, dissolving away the rock and leaving empty space. Because this area has many oil deposits, it is more acidic than normal and so dissolution is greater. That's why Carlsbad Caverns are so magnificent.

Anyway, we went into the caves via the Natural Entrance, the same entrance that I went into when I was about 9 years old. The descent into the cave was amazing with continuous switchbacks leading deeper into the caves. The trail led about 1.3 miles and 800 feet down into the cave, opening up in "The Big Room" where the elevators deposit you if you choose to take them down rather than hike down (and it's another mile or so to walk the trail through the Big Room). Believe me, it is far more extraordinary to enter through the Natural Entrance!

The Pièce de résistance, of course, are the magnificent speleothems that are formed from rain and snowmelt seeping into the caves, dripping to create stalagtites, stalagmites, ribbons, draperies, popcorn, flowstone, and soda straws (for example). The waters are rich in minerals and absorbed gases from the sediments and limestone above. When the water drop evaporates, it leaves behind calcite and decorates the caves with awesome formations.

Tomorrow, we're going to go on a ranger-guided tour to the King's Palace in the Caverns. I hope the kids don't freak out when he/she turns out all lights to make the cave dark. But before that adventure, we're going to visit the Living Desert Zoo and Gardens State Park. It'll be another fun, and warm day.





Neat

"Let all that you do be done in love"

1 Cor 16:14