Grrrrrrrrrrrrrrrrrrrrr
Ok,
This is just general bitching about things that.. well frankly.. I doubt anyone will understand. So this is mainly for myself.
But I can NOT seem to get this freaking thing to work out in my mind.
So let's start from the beginning and work through it.
OK... Red Rock Pass, Idaho was/is the location of natural dam that created Lake Bonneville. Lake Bonneville was the huge lake that basically took over all of Utah about 15,000 years ago.
Anywas.. Red Rock Pass through to Zenda, Id was the location of large alluvium fans of sediment overlaying faulted limestone bedrock. The dam height had to have been roughly 5090' or 1550m due to the fact that the lake height at the time was such. The dam is reported to have only held back the water not stopped it, due to evidence of karst and natural springs near Zenda. According to Dr. Paul Link of ISU, the threshold was first breached on the EAST side of Red Rock Pass, limited by the bedrock, then shifted west into thick unconsolidated sediments, resulting in a large landslide triggered by undercutting the fans at the foot of the bannock range.
OK.. so alluvial fans of sediments off of the Portneuf (westside) and Bannock (eastside) ranges caused the damming of the canyon. So I have to show some sediment flow off these mountain ranges into the valley. BUT lake level was controlled by spill off this dam and leakage through it. since I can't show subsurface, I should probably keep some sort of spillway through the canyon. All of which has to have a minimum level of 1550m. and since the breakout was towards the east first.. the spillway should be on the eastern side of the canyon. This also means that the large/ or higher sediment accumulation should be on the western side...
But then, why, when I look at the Digital elevation model, does it show that the current river runs along the western side. B/c... the overall breakout shifted west. But large post formations of rock show that the outflow never touched certain regions... especially in the eastern side. The largest remnant fan shows nearest Zenda on the eastern range. but the western range does show the most "damage". soo...
What if I slope out the western range at 1550, keeping it moderately low dip towards the cut out to the east, and then infill from the east to meet that western slope. Keeping in mind the vector of the river cutting through this synthetic dam...
Hmmmmm........
This is just general bitching about things that.. well frankly.. I doubt anyone will understand. So this is mainly for myself.
But I can NOT seem to get this freaking thing to work out in my mind.
So let's start from the beginning and work through it.
OK... Red Rock Pass, Idaho was/is the location of natural dam that created Lake Bonneville. Lake Bonneville was the huge lake that basically took over all of Utah about 15,000 years ago.
Anywas.. Red Rock Pass through to Zenda, Id was the location of large alluvium fans of sediment overlaying faulted limestone bedrock. The dam height had to have been roughly 5090' or 1550m due to the fact that the lake height at the time was such. The dam is reported to have only held back the water not stopped it, due to evidence of karst and natural springs near Zenda. According to Dr. Paul Link of ISU, the threshold was first breached on the EAST side of Red Rock Pass, limited by the bedrock, then shifted west into thick unconsolidated sediments, resulting in a large landslide triggered by undercutting the fans at the foot of the bannock range.
OK.. so alluvial fans of sediments off of the Portneuf (westside) and Bannock (eastside) ranges caused the damming of the canyon. So I have to show some sediment flow off these mountain ranges into the valley. BUT lake level was controlled by spill off this dam and leakage through it. since I can't show subsurface, I should probably keep some sort of spillway through the canyon. All of which has to have a minimum level of 1550m. and since the breakout was towards the east first.. the spillway should be on the eastern side of the canyon. This also means that the large/ or higher sediment accumulation should be on the western side...
But then, why, when I look at the Digital elevation model, does it show that the current river runs along the western side. B/c... the overall breakout shifted west. But large post formations of rock show that the outflow never touched certain regions... especially in the eastern side. The largest remnant fan shows nearest Zenda on the eastern range. but the western range does show the most "damage". soo...
What if I slope out the western range at 1550, keeping it moderately low dip towards the cut out to the east, and then infill from the east to meet that western slope. Keeping in mind the vector of the river cutting through this synthetic dam...
Hmmmmm........