After breakfast at Super 8, we had a devotional lead by Josh Perez and he shared his thoughts on Job 37:14 (ESV) “Hear this, O Job; stop and consider the wondrous works of God.” Josh encouraged us to just “stop” in our daily activities & just life “and consider the wondrous works of God” around us. It was encouraging & yet challenging even out in this beautiful area of the country.
We headed out to Brins Ridge just outside of Sedona. I missed getting a group picture yesterday so I could not pass up taking one at the start of our hike. Dr. Whitmore had the students take measurements as part of mapping out Brins Ridge. It took a good part of the day for the students to take their measurements to the top of the ridge.
I asked Josh to give an explanation of what he & the other students did throughout their day on the hike. I figured one of the students could do a better job explaining what they did better than I!
“What a day! Today proved itself a memorable one as the predicted rain held off and the sun shined beautifully on Brins Ridge in Sedona. As a group, it was an eventful day full of hiking and learning new techniques in order to characterize the rock strata in which we were both climbing and studying. Brins Ridge stands above Brins Mesa, the ridge peak standing approximately 800 feet above Sedona, which has an approximate elevation of 4,500 ft. Today we learned two new techniques by studying two of the main rock strata in Brins ridge; the Schnebly Hill Formation, and the overlying Coconino Sandstone. Our first task was to measure vertical thickness of the various beds we passed by, using Jacobs’ staffs, a wooden staff tool which measures height in 1.5 meter increments. In doing this, we identified various thicknesses, some of which were covered in loose, unconsolidated material and vegetation, while others were composed of thin, angled layers known as cross beds. The cross beds of the Coconino Sandstone provided a place for us to learn our second technique (composed of two individual techniques) called strike and dip. Since cross beds plunge in a general direction, we can measure that direction and the angle in which it plunges. This is known as dip. Perpendicular to the dip direction is the strike, or the general trend in which the rock layer points. The Cedarville Geology department has purchased Brunton compasses which allow us to measure both strike and dip, in order to better understand the rocks and the probable way they formed. At this point, it may be wondered, “whats the point of all this?” Well, I’m glad you asked! In addition to learning important techniques that we will use often as geologists, the studies particularly of the Coconino Sandstone prove fascinating for the large controversy regarding the way it formed. We study the Coconino in order to better understand the rock units set in place by the Catastrophic flood written of in Genesis. As we hiked today and studied the Coconino sandstone composing the top of Brins Ridge, we were not only able to learn important geological techniques, but also able to get a greater glimpse of the shear beauty of God’s creation.”
“Perhaps the most interesting part of the Coconino Sandstone is the folding which occurs throughout. The type of fold in particular which is most note worthy is called a Parabolic Recumbent Fold, in which the sandstone layers make a sort of sideways “u” shape. These folds are thought to occur from stream velocities changing. It can be thought of as sand on the bottom of a particular bed of water (with current) forming underwater waves, in which grains fall in the far side of the wave. As velocity changes, the waves do some interesting things and can form this spectacular type of folding. Dr. Whitmore has devoted much of his life studying the Coconino and has enriched us with knowledge on its probable origins, something most geology students are not fortunate enough to experience.”
We finished our time on top of Brins with another group photo to document our time up there. We had a nice walk back down.
Tomorrow morning we head out to the Grand Canon. We plan to hike the Grandview Trail. The weather looks perfect for a nice hike.