The eruption of Mount St. Helens in 1980 has fundamentally challenged traditional uniformitarian thinking about geological events, especially events of the past. In contrast to most geologic events, Mount St. Helenswas well studied. What geologists learned is that the results of the eruption, which were observed at Mount St. Helens, were similar to results of past processes that were notobserved. The importance of the study of Mount St Helens cannot be overemphasized.
Although other eruptions, as well as hurricanes, earthquakes and tsunamis have been studied, none compare with Mount St. Helens in regard to the variety of processes that were studied. Although the eruption was rather small to average when compared to other historic volcanic eruptions, the volcanic and tectonic processes involved are nevertheless analogous to the processes that would have been involved in the Genesis Flood.
Genesis 7:11 describes the breaking up of the “fountains of the great deep” as the initial cause of the flood. This appears to be a reference to the sudden eruption of volcanoes on the ocean bottoms. On that particular day, all the fountains of the great deep were broken up. Their remains are found today all over the world. (17) These volcanic events no doubt spewed not only lavas but also waters and chemicals. Today we know that the interior of the Earth is comprised of rock that contains much water.
Further, these eruptions would also have produced tsunamis. It is hard to imagine, if all these “fountains of the great deep” broke apart on the same day, the devastation the huge number of tsunamis that raced around the earth from every direction would have caused.
Genesis 7:11 also states the “windows of heaven were opened,” and Genesis 7:12 states it rained for forty days and nights. Although enough moisture existed in the atmosphere to cause quite a bit of rain, the water source had to be continually replenished. The undersea volcanic activity would have done just that. The ocean floor volcanic eruptions would have heated the water surrounding the underwater vents, most likely boiling this water. This would have sent huge plumes rising into the atmosphere, where they would have condensed and fell as rain.
Much of the devastation due to Noah’s flood would have been volcanic and tectonic in nature, and therefore analogous to the Mount St. Helens eruption. Although a great deal of volcanic devastation occurred, most of the damage done at Mount St. Helens was water related. When it was over, processes at Mount St. Helens accomplished the same sort of geologic work that biblical creationists usually attribute to the Great Flood, although on a much smaller scale and at a lower intensity. (18)
Scour Slope
When the Mount St. Helen’s erupted, huge amounts of debris landed in the nearby Spirit Lake basin creating a wave 860 feet high onto the hillside north of the lake. As the water rushed back into the basin it completely scoured off trees, leaves, animals and soil.
An estimated one million large trees were dragged back with it into the lake, creating an enormous floating log mat in Spirit Lake. Geologists call such an eroded slope a “scour slope.” They were amazed that such a surface feature, previously thought to occur after long periods of erosion, could be formed in less than one minute! When everything settled down, the floor of the lake was found to be higher than the surface was previously, 300 feet higher than before the eruption, due to all the sediments introduced to the lake.
Rapid Laminations
Before the eruption of Mount St. Helens, geologists believed that thin layers of stratification, called laminations, formed very slowly. As we stated above, the boundaries between consecutive strata were often deemed to represent long-time breaks with no deposition. However, at Mount St. Helens, strata were observed to form rapidly, without time breaks.
There is one particular area where over 600 feet of sediments were deposited by mudflows from three separate incidents, the first being the initial eruptions. Multiple thin layers of strata were deposited resembling strata which traditionally might have been thought to require many thousands or even millions of years to forms. Geologists normally think that it takes excessively long periods of time to accumulate such thick sequences of sediments. However, each of the three episodes that created this 600 foot thick deposit took only minutes to hours instead of long periods of time to form.
The layers of this deposit clearly resemble the character in many rock units in other areas, such as the Grand Canyon. (19) Had geologists studied these deposits blindly, without knowing of the recent eruption, they would have interpreted such beds as having been deposited over long periods of time in calm environments. The Tapeats Sandstone in the Grand Canyon, similar in many respects to deposits at Mount St. Helens, has traditionally been interpreted as taking long ages to accumulate. However, by better understanding catastrophic processes, leading geologists have recently reinterpreted it to be the result of a series of dynamic underwater currents. (20)
The Tapeat Sandstone actually covers much of the continent. Catastrophic deposits covering huge regions such as this are hard to explain using slow, uniformitarian reasoning. Yet it is exactly what would be predicted if the Genesis Flood were true.
Rapid Hardening of Sediments
When comparing the concepts of uniformity and catastrophe, one important factor to consider is how long it takes for soft, sandy sediments to harden into sedimentary rock. Students are taught that it takes excessively long periods of time. However, studies have shown that the amount of time can be speeded up under ideal conditions, specifically high pressure, elevated temperatures and the presence of a cementing agent to bind the grains and molecules together.
At Mount St. Helens, the conditions were far from ideal, yet in less than five years after the eruptions, geologists founds many areas where sediments were solidified enough to stand vertically on their own. This is something only rather hard rock can do and indicates that it does not take long ages to form rock.
Varves
In some calm lake beds and offshore areas, minute laminae called varves form each year as small particles accumulate. As there can be a recognizable difference in chemistry and size in varves created in different seasons, geologists have used them to estimate the time it took to deposit the entire sequence. In some areas, millions of these varves are found in sequence, leading most geologists to assume they took millions of years to form. At Mount St. Helens, varve-like laminae were formed in the multiple thousands in a span of a few hours ! This clearly smashes the assumption of long ages being required. (21)
Rapid Topographical Formations
Topography, such as those found in the Badlands of South Dakota and other southwest desert areas, are assumed by geologists to have taken many thousands of years to develop. However, similar surface features have formed around Mount St. Helens.
River drainage basins are thought to be formed over the course of millions of years. However, a mudflow formed by a small summit eruption in March of 1982 at Mount St. Helens produced a 140-foot-deep canyon where there was no canyon before. This new drainage channel was formed in a single day! The canyon formed has become known as “The Little Grand Canyon” because it appears to be a scale model of the Grand Canyon. A geologist unaware of the recent history of the canyon would assume that it occurred a long time ago and slowly eroded thereafter. This is another demonstration of the importance of Mount St. Helens.
Mount St. Helensand Radioisotope Dating
Only rocks that were once in a hot molten form, such as volcanic rocks, can be dated using radioisotope dating techniques. Thus, the rocks at Mount St. Helens should be datable. Radioactive isotopes are measured in these rocks to find out how long it takes a “parent” isotope such as potassium-40 to decay into its “daughter” isotope argon-40. The method estimates how long it would take for the “parent” to decay into that amount of “daughter.”
The time calculated is really the time which has elapsed since the igneous material cooled from a hot, molten magma into solid rock. In the case of a recent eruption of molten rock, the results should find almost no “daughter” isotopes present and be considered too young to measure. Yet samples gathered at Mount St. Helens have yielded dates as old as 2.4 million years using the potassium-argon technique. All the minerals combined yield the date of 350,000 years old. Yet these rocks cooled within lava in less than 25 years at the time of their testing.
This situation is not unique. Nearly every time a rock of known age has been dated by radioisotope dating, the calculated age is similarly exaggerated. (22) It certainly makes it difficult to trust these techniques to date rocks of unknown ages. More detail on radiometric dating methods can be found in that Appendix when I get to it.
Most people are taught that the Grand Canyon was formed due to erosion caused by the Colorado River as the Kaibab Plateau continued to rise over a very long period of time. Even though this idea continues to be taught in textbooks, it has been abandoned by most geologists who actively research the canyon. (23) The alternative viewpoint that has been developed, thanks in part to evidence provided by Mount St. Helens, is that the canyon was formed fairly recently in a more rapid water catastrophe.
Polystrate Fossils and Mount St. Helens
We mentioned above how polystrate tree fossils traverse more than one, and sometimes many, layers of strata. This makes them incompatible with any long age scenario of strata deposition. Certainly the wood would have decayed long before successive layers could have been deposited around it, if in fact it takes long ages for such deposits to occur.
Mount St. Helens has provided real-life evidence of polystrate fossil trees. When it erupted in 1980 millions of logs ended up in Spirit Lake. As the floating tree trunks became water-logged they sank to the bottom, root end first, and grounded themselves in the organic muck and bark sheets at the bottom of the lake. As the volcanic material and debris continued to settle to the bottom, these upright trees became buried on the lake bottom as if they grew there. Just five years later over 20,000 trees were found to be buried in an upright “polystrate” position.
Volcanic events continued over several years, and sedimentation is continuing at a rapid pace to this day. Thus the sunken trees are still being buried in several layers. Each species of tree water logs at different rates. Different sinking rates means that one species ends up in one layer and then another species of upright trees sits in the overlying layer. If at some future time erosion exposes these layers, the series of tree-bearing sediments would likely be interpreted as a series of successive standing forests, each with a dominant species of tree and each buried by separate volcanic events many years apart. Obviously this is not the case.
A similar series of layers displaying just this pattern has been discovered and is being studied in Yellowstone Park. A series of twenty-seven layers containing petrified trees has been exposed by erosion, and fifty such layers are found in a nearby lake. It had previously been interpreted as a series of separate forests, each requiring hundreds of years to grow before being buried by separate volcanic eruptions. Therefore, the entire sequence was assumed to have taken tens of thousands of years to be deposited. But now Mount St. Helens gives an alternate explanation of its possible origins, that of rapid catastrophic formation.
Further confirmation of this rapid catastrophic formation is found in the study of tree rings. The tree rings found in several consecutive layers at Yellowstone Park were compared. If the trees lived at different times, as uniformitarian geologists asserted, their tree rings would show entirely different yearly patterns. If they lived at the same time and died in the same catastrophe then their rings would display similar patterns. The findings of a recent study of these Yellowstonetrees revealed the trees retained matching signature patterns in their rings. (24) Thus, they lived at the same time and were transported and deposited within different strata by successive mudflows. They did not live in successive forests. The scenario is quite similar to what we find at Mount St. Helens.
Coal Formation and Mount St. Helens
Coal is believed to be formed from the remains of organic deposits, known as peat, over millions of years of heat and pressure. However, this has never been observed under natural conditions. In addition, research has now shown that coal does not take millions of years to form as commonly asserted. Several laboratory tests have shown that coal or coal-like substances can be made rapidly, in minutes, hours or days. It doesn’t even require pressure, but mainly higher temperature, ideally in the form of very hot water. (25)
Now there is evidence of rapid coal formation in actual conditions. When Mount St. Helens erupted in 1980 it devastated 150 square miles of forest north of the mountain. Within minutes over a million logs were floating on Spirit Lake, surrounded by great volumes of organic material and volcanic ash. In just a few years an organic deposit consisting of mostly tree bark, decayed wood materials and volcanic ash had accumulated at the bottom of the lake. This “peat” has much of the same make-up as coal. Since it is known that the hard, black shiny bands in coal are actually “mummified bark,” the Spirit Lake peat looks very much as if it would make good coal. Another eruption of Mount St. Helens might someday bury this peat under a hot layer of lava or volcanic ash. If it did, all of the requirements for rapid coalification would be present. (26)
Rapid Ice Age Cooling
The ash cloud from Mount St Helens blanketed 11 states and several Canadian provinces with dust. Some towns were in complete darkness at midday and had significantly decreased temperatures as a result. The earth’s rock layers show abundant evidence of a huge number of massive volcanic eruptions around the time that would have been the closing stages of the Genesis Flood. An eruption at Yellowstone, for example, was estimated to be 1000 times as big as that of Mount St Helens. So if the comparatively small Mount St Helens could cool the earth, it is easy to see how multiple volcanic eruptions after the Flood contributed to the rapid onset of the Ice Age.
Little Grand Canyon
Nearly 2 years after the initial eruption, on March 19, 1982, the hot volcanic ash from another explosive eruption of Mount St. Helens melted a thick snow pack in the crater, creating a destructive, sheet-like flood of water and mud, which became a mudflow. Reaching earlier deposits that were blocking Spirit Lake, the flow cut channels through the debris at a speed of 40 miles per hour. Individual canyons up to 140 feet deep appeared in a single day. On either side of the canyons were elevated plateaus resembling the North and South Rims of the Grand Canyon.
Side canyons also appeared, resembling the side canyons of the Grand Canyon. The breach did not cut straight through the obstruction, but took a meandering path, similar to the meandering path of the Grand Canyon through the high plateaus of northern Arizona. This “Little Grand Canyon” is a one-fortieth scale model of the real Grand Canyon.
This amazing feature was cut through soft debris, but another eruption two months later (on May 19, 1982) melted a snow pack that cut through hard basalt bedrock. The resulting Loowit Canyon was more than 100 feet (30 m) deep. Nearby, the avalanche cut through lava and ash layers to form a third canyon, Step Canyon, up to 600 feet (180 m) deep.
Small creeks now flow through these deep canyons. In other places where small creeks run through deep canyons, geologists assume the creeks cut the surrounding canyons very slowly over a very long time period. Yet Mount St. Helens has clearly shown that canyons form first and form extremely rapidly!